Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (12389)
- Utah State University (2961)
- University of Nevada, Las Vegas (1903)
- Montana Tech Library (1897)
- China Coal Technology and Engineering Group (CCTEG) (1822)
-
- Department of Primary Industries and Regional Development, Western Australia (1734)
- University of Colorado Law School (1646)
- Chulalongkorn University (1444)
- University of Kentucky (1363)
- Portland State University (1351)
- University of Arkansas, Fayetteville (999)
- City University of New York (CUNY) (900)
- University of South Florida (697)
- Old Dominion University (684)
- SIT Graduate Institute/SIT Study Abroad (668)
- Montclair State University (615)
- Clemson University (602)
- University of Texas Rio Grande Valley (598)
- Louisiana State University (536)
- South Dakota State University (499)
- Loyola Marymount University and Loyola Law School (489)
- Edith Cowan University (460)
- University of Texas at El Paso (368)
- Chapman University (357)
- International Centre of Insect Physiology and Ecology (357)
- World Maritime University (353)
- Western Kentucky University (343)
- California Polytechnic State University, San Luis Obispo (297)
- Chinese Academy of Sciences (297)
- Wofford College (287)
- Keyword
-
- Western Australia (1129)
- Climate change (1051)
- Sustainability (928)
- Water quality (756)
- United States (661)
-
- Groundwater (573)
- Conservation (521)
- Environment (478)
- 2014 International Conference on Hydroinformatics HIC (464)
- California (428)
- Priority Soils (416)
- Agriculture (387)
- Water (373)
- Drought (365)
- Climate (354)
- Colorado (352)
- Natural resources (332)
- Utah (312)
- Gas (306)
- Remote sensing (305)
- Management (296)
- Energy (292)
- Invasive species (278)
- Salinity (276)
- Ecology (275)
- Hydrology (250)
- Biodiversity (249)
- Nebraska (249)
- And Energy; Structural Materials; Sustainability (248)
- Energy Systems; Environmental Indicators and Impact Assessment; Environmental Monitoring; Mining Engineering; Oil (248)
- Publication Year
- Publication
-
- Silver Bow Creek/Butte Area Superfund Site (1884)
- Coal Geology & Exploration (1822)
- School of Natural Resources: Faculty Publications (1733)
- United States Department of Agriculture Wildlife Services: Staff Publications (1625)
- Thai Environment (1027)
-
- Reports (728)
- Electronic Theses and Dissertations (627)
- Independent Study Project (ISP) Collection (627)
- World of Coal Ash Proceedings (580)
- United States Geological Survey: Staff Publications (519)
- Theses and Dissertations (515)
- The Prairie Naturalist (483)
- Great Plains Wildlife Damage Control Workshop Proceedings (478)
- International Conference on Hydroinformatics (464)
- Theses (427)
- UNLV Theses, Dissertations, Professional Papers, and Capstones (426)
- United States Department of Commerce: Staff Publications (426)
- School of Earth, Environmental, & Marine Sciences Faculty Publications (422)
- LSU Master's Theses (378)
- USF Tampa Graduate Theses and Dissertations (370)
- Arkansas Water Resources Center Technical Reports (367)
- School of Natural Resources: Dissertations, Theses, and Student Research (367)
- Open Access Theses & Dissertations (360)
- All Peer-Reviewed Publications (357)
- S.C. Water Resources Conference (336)
- Journal of the Department of Agriculture, Western Australia, Series 4 (334)
- Memorandum (316)
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (305)
- Environmental Science and Management Faculty Publications and Presentations (298)
- Bulletin of Chinese Academy of Sciences (Chinese Version) (297)
- Publication Type
Articles 10951 - 10980 of 52743
Full-Text Articles in Entire DC Network
Copy Of Revision Summary - Sbc/Butte Area Npl Site Final Bpsou Interim Site-Wide Surface Water Monitoring Qapp 2020 And 2021 Monitoring Period, 10/14/20, Atlantic Richfield Company, Trec Inc., A Woodard And Curran Company
Copy Of Revision Summary - Sbc/Butte Area Npl Site Final Bpsou Interim Site-Wide Surface Water Monitoring Qapp 2020 And 2021 Monitoring Period, 10/14/20, Atlantic Richfield Company, Trec Inc., A Woodard And Curran Company
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Revised Silver Bow Creek Butte Area Npl Site 2022 Final Butte Priority Soils Operable Unit Interim Site-Wide Surface Water Monitoring Quality Assurance Project Plan. Consent Decree- Civil Action No. Cv 89-039-Bu-She, Josh Bryson
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit 2022 Final Interim Site-Wide Surface Water Monitoring Qapp, Trec Inc., A Woodard And Curran Company
Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit 2022 Final Interim Site-Wide Surface Water Monitoring Qapp, Trec Inc., A Woodard And Curran Company
Silver Bow Creek/Butte Area Superfund Site
No abstract provided.
A History Of Wright State University's Department Of Geological Science, Paul J. Wolfe
A History Of Wright State University's Department Of Geological Science, Paul J. Wolfe
Earth and Environmental Sciences Faculty Publications
A history of Wright State University's disbanded and reintegrated Department of Geological Sciences written by department faculty member Paul J. Wolfe. Wolfe describes the development of the program, the faculty throughout the years, and the programs offered through the department.
Drought Severity In Somalia, Food And Agricultural Organization Of The United Nations, Somalia Water And Land Information Management
Drought Severity In Somalia, Food And Agricultural Organization Of The United Nations, Somalia Water And Land Information Management
East Africa
The poor rains during the last three consecutive seasons (October 2020 to December 2021) have caused widespread and worsening drought condi-tions across most parts of Somalia. This has result-ed in failed crop harvests, widespread water short-age, triggering abnormal livestock migration, de-cline in livestock production and increased live-stock deaths. Water and food prices have contin-ued to rise sharply.
Dispersed Crude Oil Induces Dysbiosis In The Red Snapper Lutjanus Campechanus External Microbiota, Andrew M. Tarnecki, Christelle Miller, Tracy A. Sherwood, Robert J. Griffitt, Ryan W. Schloesser, Dana L. Wetzel
Dispersed Crude Oil Induces Dysbiosis In The Red Snapper Lutjanus Campechanus External Microbiota, Andrew M. Tarnecki, Christelle Miller, Tracy A. Sherwood, Robert J. Griffitt, Ryan W. Schloesser, Dana L. Wetzel
Faculty Publications
The fish external microbiota competitively excludes primary pathogens and prevents the proliferation of opportunists. A shift from healthy microbiota composition, known as dysbiosis, may be triggered by environmental stressors and increases host susceptibility to disease. The Deepwater Horizon (DWH) oil spill was a significant stressor event in the Gulf of Mexico. Despite anecdotal reports of skin lesions on fishes following the oil spill, little information is available on the impact of dispersed oil on the fish external microbiota. In this study, juvenile red snapper (Lutjanus campechanus) were exposed to a chemically enhanced water-accommodated fraction (CEWAF) of Corexit 9500/DWH …
Research Priorities Of Applying Low-Cost Pm2.5 Sensors In Southeast Asian Countries, Shih-Chun Candice Lung, To Thi Hien, Maria Obiminda L. Cambaliza, Ohnmar May Tin Hlaing, Nguyen Thi Kim Oanh, Mohd Talib Latif, Puji Lestari, Abdus Salam, Shih-Yu Lee, Wen-Cheng Vincent Wang
Research Priorities Of Applying Low-Cost Pm2.5 Sensors In Southeast Asian Countries, Shih-Chun Candice Lung, To Thi Hien, Maria Obiminda L. Cambaliza, Ohnmar May Tin Hlaing, Nguyen Thi Kim Oanh, Mohd Talib Latif, Puji Lestari, Abdus Salam, Shih-Yu Lee, Wen-Cheng Vincent Wang
Physics Faculty Publications
The low-cost and easy-to-use nature of rapidly developed PM2.5 sensors provide an opportunity to bring breakthroughs in PM2.5 research to resource-limited countries in Southeast Asia (SEA). This review provides an evaluation of the currently available literature and identifies research priorities in applying low-cost sensors (LCS) in PM2.5 environmental and health research in SEA. The research priority is an outcome of a series of participatory workshops under the umbrella of the International Global Atmospheric Chemistry Project–Monsoon Asia and Oceania Networking Group (IGAC–MANGO). A literature review and research prioritization are conducted with a transdisciplinary perspective of providing useful scientific evidence in assisting …
Temperature And Predator Effects On Green Crabs (Carcinus Maenas) And Their Distribution In South Slough National Estuarine Research Reserve, Elissa Connolly-Randazzo
Temperature And Predator Effects On Green Crabs (Carcinus Maenas) And Their Distribution In South Slough National Estuarine Research Reserve, Elissa Connolly-Randazzo
Dissertations and Theses
The invasive green crab (Carcinus maenas) has increased in abundance and distribution among Oregon's estuaries. Its global success in establishing in new environments and tolerance for abiotic stressors, such as temperature, raises concern for C. maenas to negatively influence native crab species, especially given global climate change. To improve in predicting invasion impacts, this work analyzed the results from a controlled tank experiment at Portland State University and the field data on a population of C. maenas in South Slough National Estuarine Research Reserve (SSNERR). The aquarium experiment documented predation pressure on C. maenas across a range of …
The Social Networks Of Manureshed Management, Gwendwr Rhiannon Meredith, Sheri Spiegal, Peter J. A. Kleinman, Daren Harmel
The Social Networks Of Manureshed Management, Gwendwr Rhiannon Meredith, Sheri Spiegal, Peter J. A. Kleinman, Daren Harmel
School of Natural Resources: Faculty Publications
Manureshed management—the strategic use of manure nutrients that prioritizes recycling between livestock systems and cropping systems—provides a comprehensive framework for sustainable nutrient management that necessitates the collaboration of many actors. Understanding the social dimensions of collaboration is critical to implement the strategic and technological requirements of functional manuresheds. To improve this understanding, we identified aspirational networks of actors involved in manureshed management across local, regional, and national scales, principally in the United States, elucidating key relationships and highlighting the breadth of interactions essential to successful manureshed management. We concluded that, although the social networks vary with scale, the involvement of …
Table Of Contents, The Editors
Application Of Borehole Transient Electromagnetic Method In Detecting The Cross-Border Mining Goaf, Fan Tao, Li Ping, Zhao Zhao, Li Wei, Zhao Rui, Zhang Peng, Yao Weihua, Li Yuteng, Fang Zhe
Application Of Borehole Transient Electromagnetic Method In Detecting The Cross-Border Mining Goaf, Fan Tao, Li Ping, Zhao Zhao, Li Wei, Zhao Rui, Zhang Peng, Yao Weihua, Li Yuteng, Fang Zhe
Coal Geology & Exploration
Cross-border mining in underground coal mines disrupts the order of coal resource development, and has huge hidden safety danger. Accurate detection of goafs caused by cross-border mining and their boundaries is extremely important for safe mining. Conventional mine transient electromagnetic detection methods are susceptible to interference from metal and electromagnetic signals in the roadway, and its detection accuracy is limited, which makes it difficult to meet the needs of accurate interpretation of goaf boundary. For the purpose of solving this problem, a drilling transient electromagnetic method and construction technology for transmitting and receiving signals in drilling is proposed to increase …
Research On Key Technologies Of The Zdy25000ldk Intelligent Directional Drilling Equipment, Fang Peng, Yao Ke, Wang Longpeng, Zhang Rui, Meng Rui, Wang Song, Shao Junjie, Liu Pu
Research On Key Technologies Of The Zdy25000ldk Intelligent Directional Drilling Equipment, Fang Peng, Yao Ke, Wang Longpeng, Zhang Rui, Meng Rui, Wang Song, Shao Junjie, Liu Pu
Coal Geology & Exploration
It is the most direct and effective method to extract coalbed methane by drilling along the coal seam and high-level drilling on the roof for comprehensive treatment of coalbed methane in underground coal mines. Improving the drilling speed of directional drilling and the drilling encounter rate in the coal seam of uneven thickness with large fluctuation, reducing the labor intensity of the personnel, enhancing the ability to prevent drilling accidents, and adapting to the intelligent development needs of coal mines, the intelligent drilling equipment for long-distance directional drilling in coal mines are all the important problems to be solved in …
Design And Implementation Of The Geological Guarantee System Architecture Based On Microservices, Li Peng, Cheng Jianyuan
Design And Implementation Of The Geological Guarantee System Architecture Based On Microservices, Li Peng, Cheng Jianyuan
Coal Geology & Exploration
The geological guarantee system is very important for safety production in coal mines. In view of the problems faced by the software development of the system, such as diverse data sources, inconsistent language for integrated development of the geological monitoring system and poor adaptability of the geological support platform in different coal mines caused by customized software development, a three-tier development architecture of the geological support system based on microservices is proposed, which includes an application tier, a platform tier and an infrastructure tier. On the basis of the microservices, the integrated development process of the geological support system is …
Influential Factors Of The Electromagnetic Wave Instrument While Drilling In Coal Seam Horizontal Wells And Resistivity Simulation Calculation, Chen Gang, Zhang Jiguan, Li Quanxin, Liu Zhiyi
Influential Factors Of The Electromagnetic Wave Instrument While Drilling In Coal Seam Horizontal Wells And Resistivity Simulation Calculation, Chen Gang, Zhang Jiguan, Li Quanxin, Liu Zhiyi
Coal Geology & Exploration
In order to figure out the influential factors of the detection by the electromagnetic wave instrument while drilling in coal seam horizontal wells, we studied the impacts of roof and floor surrounding rock resistivity, instrument eccentricity, coal seam borehole collapse and coal seam thickness on the measurement of resistivity through finite element numerical simulation. The resistivity response law of the amplitude ratio and phase difference calculation under the condition of high-resistivity coal rock formation was analyzed. On this basis, a three-layer geological mathematical model was established to simulate the difference between analytical and numerical solutions of the amplitude ratio and …
Optimization Of Surface Directional Wells For Water Control Based On Three-Dimensional Seismic Dynamic Geological Modeling, Lu Ziqing, Gao Yaoquan, Guo Yuan
Optimization Of Surface Directional Wells For Water Control Based On Three-Dimensional Seismic Dynamic Geological Modeling, Lu Ziqing, Gao Yaoquan, Guo Yuan
Coal Geology & Exploration
In the treatment of high-pressure Ordovician limestone water in the coal seam floor, the design and construction optimization of surface directional wells mainly relies on two-dimensional AutoCAD geological drawings. For the avoidance of such problems as low drilling rate and off-target in the target area under complex geological conditions, and to improve the effect of precise targeted water hazard control, a technology for optimizing directional wells for water hazard prevention and control based on seismic dynamic modeling is proposed. By comparing and analyzing the current situation and problems of drilling trajectory design and optimization technology, it is pointed out that …
Prevention And Control Technology Of Ordovician Water In Tangjiahui Coal Mine Based On Transparent Geology, Gao Yaoquan, Gao Yingui, Lu Ziqing, Kong Wanjun
Prevention And Control Technology Of Ordovician Water In Tangjiahui Coal Mine Based On Transparent Geology, Gao Yaoquan, Gao Yingui, Lu Ziqing, Kong Wanjun
Coal Geology & Exploration
The problems of many water diversion faults and, concealed water diversion structure have led to the difficulty of water disaster prevention and control of Ordovician limestone in No.6 coal seam in Tangjiahui Coal Mine. After continuous exploration and practice, a variety of advanced technologies has been introduced to obtain a large number of geological and hydrogeological data, and construct an intelligent geological guarantee system. The technical ideas of “geophysical and drilling exploration, joint grouting treatment up-hole and down-hole, in-hole transient electromagnetic fine exploration, inter-hole resistivity detection of grouting effect, and joint monitoring of coal seam floor by micro-seismic and electromagnetic …
Construction Method Of Transparent Working Face Based On Borehole Radar, Jiang Bici, Cheng Jianyuan, Li Ping, Liu Wenming, Yu Junhui, Wu Guoqing
Construction Method Of Transparent Working Face Based On Borehole Radar, Jiang Bici, Cheng Jianyuan, Li Ping, Liu Wenming, Yu Junhui, Wu Guoqing
Coal Geology & Exploration
The high-precision detection of coal rock interface is the key and difficult point to construct the three-dimensional geological model of intelligent mining. A method is proposed to construct regional coal rock interface geological model and realize transparent working face by using single hole reflection radar in the hole along coal seam and multi hole detection results. For single borehole radar data, the coal seam radar wave velocity is calculated by using the slope of roadway wave in-phase axis, and the spatial constrained migration imaging is used to realize the accurate calculating of coal seam top/floor reflection interface. Three transparent working …
Construction Method On Transparent Geological Guarantee Technologies: A Case Study Of Wuhai Mining Area, Gu Baoze, Dai Zhenhua, Li Mingxing, Chen Baohui
Construction Method On Transparent Geological Guarantee Technologies: A Case Study Of Wuhai Mining Area, Gu Baoze, Dai Zhenhua, Li Mingxing, Chen Baohui
Coal Geology & Exploration
Coal geological guarantee technologies are applied in the whole life cycle of the coal industry. The technologies are the basis and premise of realizing safe, efficient, intelligent and green mining of coal resources, and plays a key role in disaster prevention, hidden disaster-causing factor detection and intelligent mining of coal. Without any doubt, geological transparency is the crucial task to improve the ability of intelligent analysis and decision-making, automatic and precise control, and efficient coal mining. For the purpose of solving the problems faced by Wuhai Mining Area in the construction of coal mine intellectualization, such as complex geological conditions …
Feasibility Study Of The Metaverse Technology In Coal Mine Emergency Training And Drills, Guo Yangyang
Feasibility Study Of The Metaverse Technology In Coal Mine Emergency Training And Drills, Guo Yangyang
Coal Geology & Exploration
Coal mine safety training and emergency drills are effective measures to prevent disasters and accidents. At this stage, however, there are problems such as the boring training content, drills emphasizing “performance” rather than “practice”, and formalism. Metaverse technology integrates VR, AR, 3D, blockchain, Internet of things, AI, digital twin and other technologies, therefore, it is characterized by intuitiveness, strong interaction and high knowledge conversion rate in coal mine safety training and emergency drills, which can well solve the above problems. Now the metaverse technology is increasingly mature from hardware, software to various supporting facilities, while it is still faced with …
Construction And Demonstration Of The Transparent Geological Guarantee System In Tangjiahui Coal Mine, Liu Jiegao, Cheng Jianyuan, Shu Yiguo, Liu Zaibin, Gao Yingui, Gao Yaoquan, Lu Ziqing
Construction And Demonstration Of The Transparent Geological Guarantee System In Tangjiahui Coal Mine, Liu Jiegao, Cheng Jianyuan, Shu Yiguo, Liu Zaibin, Gao Yingui, Gao Yaoquan, Lu Ziqing
Coal Geology & Exploration
The intelligence construction of Tangjiahui Coal Mine is confronted with constrains such as water-conducting faults and pressure of Ordovician limestone water, and how to make the geological conditions transparent has become the technical bottleneck of intelligent mining. Tangjiahui Coal Mine puts emphasize on the prevention and control of water disasters and adopted five advanced technologies, including borehole transient electromagnetic technology, multi-borehole resistivity, seismic while excavating, seismic while mining, microseismic monitoring to build a real-time dynamic transparent geological guarantee system. The system realizes the prevention and control of water disasters, rapid excavation and intelligent mining based on transparent geological models, which …
Characteristics And Detection Performance Of The Source Of Seismic While Excavating In Underground Coal Mines, Wang Baoli, Cheng Jianyuan, Jin Dan, Yang Xiaogang, Yang Hui
Characteristics And Detection Performance Of The Source Of Seismic While Excavating In Underground Coal Mines, Wang Baoli, Cheng Jianyuan, Jin Dan, Yang Xiaogang, Yang Hui
Coal Geology & Exploration
Against a background of intelligent coal mines, seismic while excavating has become one of the key geological guarantee technologies for safe excavation in the mining face. It can detect hidden geological structures in real-time, in advance and finely, such as goafs, faults, and collapsed columns, effectively promoting safe and efficient excavation and production. Different from the widely used advanced detection technology of reflection in-seam wave, the vibration signal of the tunneling machine is used as the excitation source, which replaces the explosive source in conventional seismic exploration. It has the advantages of environmental frendliness, safety, low cost, recyclability and combined …
Application Of Reflected In-Seam Wave Detection For Small Faults In Thick Coal Seams, Su Xiaoyun
Application Of Reflected In-Seam Wave Detection For Small Faults In Thick Coal Seams, Su Xiaoyun
Coal Geology & Exploration
In general, the fault distance and extension length of small faults in the working face of thick coal seams and extremely thick coal seams are short. Due to the limitation of resolution, it is generally difficult to detect such small faults with current methods and instruments. The unclear detection of small faults will have a great impact on the efficient recovery of the intelligent working face. To solve this problem, the numerical simulation and field experiment of small fault reflected in-seam wave detection in the thick coal seam are carried out. In terms of numerical simulation, the three-component elastic wave …
Application Research On Dynamic Calibration And Prediction Technology Of Coal Seam In Coalmine Working Face, Liu Wenming, Gao Yaoquan, Jiang Bici, Li Peng, Xue Wuqiang
Application Research On Dynamic Calibration And Prediction Technology Of Coal Seam In Coalmine Working Face, Liu Wenming, Gao Yaoquan, Jiang Bici, Li Peng, Xue Wuqiang
Coal Geology & Exploration
One of the prominent problems of intelligent mining is its inadaptability to geological conditions, especially for the absolute accuracy of coal seam floor and thickness. 3D seismic has a high horizontal resolution and it can control the ups and downs of the coal seam. However, due to the time domain data, the calculation of the coal seam floor elevation is negatively affected by the time-depth conversion point. On the basis of the 3D seismic data of the working face and the coal thickness data during the mining process, the absolute accuracy of the time-depth conversion of the coal seam floor …
Application Of Mine-Used Resistivity Monitoring System In Working Face Water Disaster Control, Lu Jingjin, Wang Bingchun, Li Deshan, Duan Jianhua
Application Of Mine-Used Resistivity Monitoring System In Working Face Water Disaster Control, Lu Jingjin, Wang Bingchun, Li Deshan, Duan Jianhua
Coal Geology & Exploration
The geological transparency of water disasters is in urgent need to serve the intelligent and unmanned mining of coal mines. Focused on the water disasters during mining in the working face, the mine-used resistivity monitoring system uses pseudo-random signal transmission and full waveform data acquisition to improve the anti-interference ability of the equipment. Electrode grounding condition consistency correction and monitoring data normalization are used to suppress false anomalies. Time-lapse resistivity imaging is used to identify and extract the abnormal resistivity response of hidden water hazards. The monitoring system is able to estimate the risk of water disasters by monitoring the …
Resistivity Detection And Its Application In Underground Coal Mine Directional Boreholes, Li Bofan, Liu Lei, Fan Tao, Jiang Qiping, Wang Jie
Resistivity Detection And Its Application In Underground Coal Mine Directional Boreholes, Li Bofan, Liu Lei, Fan Tao, Jiang Qiping, Wang Jie
Coal Geology & Exploration
The working face threatened by high gas or Ordovician limestone water pressure generally adopts directional drilling technology to carry out fracturing or grouting works at the bottom of the working face before mining to ensure the safety of mining. In-hole probing in directional boreholes in the bottom plate can reveal the hidden structures in the working face in a more detailed way, and can also realize “one hole for multiple uses”. In order to solve the detection problem in the directional drilling, a method of DC resistivity detection in the horizontal directional drilling is proposed. To solve the problem of …
The Adaptive Detection Technology Of Ultrasonic Flow In Mining Boreholes, Dai Chenyu, Zhao Pengpeng, Xu Jing
The Adaptive Detection Technology Of Ultrasonic Flow In Mining Boreholes, Dai Chenyu, Zhao Pengpeng, Xu Jing
Coal Geology & Exploration
For a better flow monitoring at the borehole of underground gas drainage in coal mines, and in response to the influence of factors such as complex composition, poor purity and poor stability of the medium in the pipeline on the measurement accuracy of drainage flow parameters, a set of adaptive detection system of ultrasonic flow for mining boreholes is designed with the time difference method as the measurement principle and the double threshold comparison method as the detection method. The overall scheme of the detection system is designed based on the analysis of the key problems affecting the measurement accuracy …
Development And Application Of Zdy4500lfk Full Automatic Drilling Rig, Dong Hongbo, Fan Qiang, Li Kun, Ma Bin
Development And Application Of Zdy4500lfk Full Automatic Drilling Rig, Dong Hongbo, Fan Qiang, Li Kun, Ma Bin
Coal Geology & Exploration
The ZDY4500LFK full automatic drilling rig was developed and equipped with a surface monitoring and control system to improve the automation of various drilling works and reduce the number of underground workers, then accelerate the intelligent construction of coal mines and meet the demand for the construction of transparent geological security system in mines. In consideration of the key technical problems encountered in the drilling construction of the drilling rig in the transparent geological guarantee system in Tangjiahui Coal Mine of Huaihe Energy West Coal and Electricity Group, such key technologies as row positioning technology and automatic unloading buckle were …
Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo
Development Of A Remote Monitoring System For Coal Mine Automatic Drilling Rigs, Wang Tianlong, Ma Bin, Dong Hongbo
Coal Geology & Exploration
According to the policies on the manufacturing of national energy equipment, coal mine robots and intelligent development of coal mines as well as the trend of intelligent development of coal equipment, a remote monitoring system of automatic drilling rigs for coal mines is developed to monitor the automatic drilling rig remotely on the ground by using sensor measurement, software development, virtual reality, network communication, video monitoring and other technologies. The problems of incomplete parameter display, insufficient effective monitoring and inconvenient maintenance of the existing underground coal mine drilling rig are solved. The remote monitoring system includes the main rig, onboard …
Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan
Development And Application Of A Mine-Used Dynamic Azimuth Gamma Instrument While Drilling, Chen Long, Chen Gang, Zhang Jiguan
Coal Geology & Exploration
Gas drainage borehole along coal seams is the most direct and effective gas control method at present. As a common basis for identifying coal bearing formations, natural gamma can tell whether the borehole trajectory is in the target layer according to the formation radioactivity. However, the existing mine-used gamma logging tools can only carry out sliding drilling measurement, which are not applicable to compound drilling or rotary steering drilling, and cannot meet the working condition of continuous gamma dynamic measurement. On the basis of the analysis of the characteristics of the working conditions of MWD and the principle of gamma …
Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing
Key Technologies And Engineering Practice Of 3d Laser Scanning In Coal Mine Roadways, Wang Haijun, Liu Zaibin, Lei Xiaorong, Han Baoshan, Lu Ziqing
Coal Geology & Exploration
Intelligent and unmanned mining is an inevitable trend in the development of the coal industry. Precise geological information detection is one of the current key research and development directions in the construction of smart coal mines. The precise detection of information on roadways and the rapid acquisition of three-dimensional roadway models are important data sources for geological transparence. Through a comparative analysis of traditional roadway modeling methods and their advantages and disadvantages, a technical idea of using three-dimensional laser scanning reconstruction technology to construct a high-precision transparent working face roadway model is proposed. On the basis of the analysis of …