Montana Tech of the University of Montana
Missouri University of Science and Technology
Department of Primary Industries and Regional Development, Western Australia
Walden University
Influence Of Cutting Parameters On The Performance Of Plough During Hard Rock Cutting In Coal Mining,
2023
Department of Mining Engineering, Indian Institute of Technology Kharagpur, West Bengal - 721302, India
Influence Of Cutting Parameters On The Performance Of Plough During Hard Rock Cutting In Coal Mining, Sathish Kumar Palaniappan, Moganapriya Chinnasamy, Samir Kumar Pal, Rajasekar Rathanasamy
Journal of Sustainable Mining
Coal ploughs have proved very successful on many faces in various parts of the world. Recently, there has been a general tendency in longwall working to increase the speed at which the machine progresses along the coal face. An increase in production rate demands enhances either due to depth of penetration or cutting speed. This, in turn, results in increasing power demand and also the force acting on an individual pick. To get maximum efficiency from a cutting machine, a number of parameters need to be investigated. The first and foremost thing of interest is naturally the pick geometry. The …
Geophysical Imprint Of Mining-Induced Rock Mass Deformation In The Area Of Construction Disaster In Bytom (Poland),
2023
Central Mining Institute, Plac Gwarków 1, 40-166 Katowice, Poland
Geophysical Imprint Of Mining-Induced Rock Mass Deformation In The Area Of Construction Disaster In Bytom (Poland), Andrzej Kotyrba, Łukasz Kortas
Journal of Sustainable Mining
The paper presents the analysis of the results of geophysical surveys conducted in the mining area located in Bytom – Karb (USCB, Poland) in the aspect of identifying the causes of significant damage to the complex of inhabited tenement houses which occurred in 2011. The surveys were carried out by microgravimetric and GPR methods. The construction disaster was caused by the exploitation of one of the hard coal seams at a depth of about 800 m along the mining longwall running underneath the settlement. The terrain deformation parameters exceeded the forecasted values, and in several places discontinuities took linear forms …
Numerical Modeling Of Rock Blocks With Nonpersistent Rough Joints Subjected To Uniaxial Compressive And Shear Loadings,
2023
Missouri University of Science and Technology
Numerical Modeling Of Rock Blocks With Nonpersistent Rough Joints Subjected To Uniaxial Compressive And Shear Loadings, Mostafa Asadizadeh, Mahdi Moosavi, Mohammad Farouq Hossaini, Ahmadreza Hedayat, Taghi Sherizadeh, Hossein Masoumi
Mining Engineering Faculty Research & Creative Works
Characterizing the mechanical behavior of jointed rocks is important to understand the behavior of structures in rock masses. Jointed rocks can be composed of persistent and nonpersistent joints where the impact of nonpersistent joints requires careful consideration for an accurate rock mass mechanical characterization. Most previous investigations into nonpersistent jointed rocks focused on joints with smooth surfaces, and a few experimental studies focused on nonpersistent rough joints and nothing specific has been reported numerically. Therefore, this study investigated several synthetic jointed rocks with nonpersistent rough joints numerically under uniaxial compressive and shear loadings. The PFC2D-based synthetic rock mass (SRM) approach …
Status And Prospects Of Fully Mechanized Mining Technology In Vietnam Coal Mines From 2005 To 2020,
2023
Vietnam Institute of Mining Science and Technology (IMSAT)
Status And Prospects Of Fully Mechanized Mining Technology In Vietnam Coal Mines From 2005 To 2020, Hai Duong Duc, Quang Dao Hong, Viet Phan Van, Thang Ngo Van
Journal of Sustainable Mining
This paper analyzes the achievement and the failures of applying the mechanized mining method in underground coal mines by the Vietnam National Coal – Mineral Industries Holding Corporation Ltd. (VINACOMIN) for 15 years (from 2005 to 2020). It also proposes the recommendations for developing mechanized mining in order to improve coal production, productivity and safety management for the sustainable development of Vietnam’s underground coal mining in the period 2021-2025
Evaluating The Impacts Of The Transition From Open-Pit To Underground Mining On Sustainable Development Indexes,
2023
Amirkabir University of Technology, Department of Mining Engineering, Iran
Evaluating The Impacts Of The Transition From Open-Pit To Underground Mining On Sustainable Development Indexes, Naser Badakhshan, Kourosh Shahriar, Sajjad Afraei, Ezzeddin Bakhtavar
Journal of Sustainable Mining
Sustainable development is about creating a balance between development and environment, and it consists of three essential principles: environment, society, and economy. Today, one of the most important challenges in deep open pit mines is the transition from open pit to underground, which has positive and negative impacts on sustainable development indexes. In order to reduce these adverse impacts, the impact of various parts of the transition operation on these indexes should be evaluated and corrective and preventive measures should be implemented. In this study, using a hybrid semi-quantitative approach, the effects of the transition in the Songun copper mine …
Applications Of Uavs In Mine Industry: A Scoping Review,
2023
Thuyloi University
Applications Of Uavs In Mine Industry: A Scoping Review, Dang Tuyet Minh, Nguyen Ba Dung
Journal of Sustainable Mining
In recent years, a variety of technologies have improved mining operations. One of them is the Unmanned Aerial Vehicles (UAVs), the emerging technology that has been changing the mining process, boosting mining safety and productivity. The main purpose of this paper is to review the applications of UAVs in the mining industry based on the results of 113 research papers over the past twelve years, from 2010 to May 2022. The potential applications of UAVs in the mining industry are broad. Based on the paper identified, eight categories are used to classify UAV applications in the mining sector. The reviewed …
Mine Water Inrush Prediction Method Based On Vmd-Dbn Model,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China; Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China
Mine Water Inrush Prediction Method Based On Vmd-Dbn Model, Liu Hui, Liu Guiqin, Ning Dianyan, Fan Juan, Chen Weiming
Coal Geology & Exploration
In the process of coal mining, the loss of people and property caused by mine water inrush is extremely serious. To prevent the occurrence of water inrush accidents and grasp the law of change of water inrush, the water inrush prediction and forecasting, especially the accurate estimation of mine water inrush, is very important, which is also an important task in the prevention and control of mine water damage. To increase the prediction accuracy of mine water inrush, an efficient time series prediction model combining Variational Mode Decomposition (VMD) and Deep Belief Network (DBN) was proposed for the series of …
Numerical Simulations Of The Rapid Interception Mechanisms By The Borehole-Controlled Grouting With Grout-Conserving Bags Under Flowing Water,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Lab of Mine Water Hazard Prevention and Control, Xi’an 710077, China
Numerical Simulations Of The Rapid Interception Mechanisms By The Borehole-Controlled Grouting With Grout-Conserving Bags Under Flowing Water, Yang Zhibin
Coal Geology & Exploration
Grout-conserving bags. To characterize the local and overall development processes of the rapid interception more subtly and vividly, this study built a CFD-DEM fluid-solid coupling mathematical model of the roadway inlet under the given water head boundary according to the principle of a constant velocity. Then, given constant velocities of water inrush volumes of 2000 m3/h and 20000 m3/h, this study numerically simulated the construction process of water-blocking bodies by pouring and stacking aggregates with a grain size of 22 mm under the operating conditions with or without grout-conserving bags. The results show that: (1) Under …
Influence Of Water Yield Property Of Yan’An Formation Aquifer On Water Yield Of Mines In Southern Shenmu-Fugu Mining Area,
2023
School of Water and Environment, Chang’an University, Xi’an 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang’an University, Xi’an 710054, China; Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of the Ministry of Water Resources, Chang’an University, Xi’an 710054, China; Engineering Research Center of Groundwater and Eco-Environment of Shaanxi Province, Xi’an 710054, China; Shaanxi Province “Four Main Bodies-joint” School Enterprise Joint Research Center for Mine Ecological Geological Environment Protection and Restoration in the Middle Reaches of the Yellow River, Xi’an 710077, China
Influence Of Water Yield Property Of Yan’An Formation Aquifer On Water Yield Of Mines In Southern Shenmu-Fugu Mining Area, Li Shu, Yang Zeyuan, Ma Xiongde, Liu Shengzu, Fang Chujing, Zhang Aoqi
Coal Geology & Exploration
Aiming at the large difference of water yield of different mine fields in Yushenfu mining area, based on a large amount of drilling, pumping test data collected in the area, from the weathering and denudation, burning effect, discontinuous distribution regions of aquifuges, microscopic pore structure, the influencing factors of water yield property of Yan’an Formation aquifer(YFA) are analyzed. Combined with the height of the water-conducting fissure zones, the influence of water yield property of YFA on water yield of mines is discussed. The results show that weathering and denudation cause the sandstone of Yan’an Formation to develop fissures and be …
A Method For Predicting Fractures In Carbonate Reservoirs Based On Fracture Identification-Sensitive Log-Seismic Parameter Model,
2023
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China; Haiyang Oil Production Plant, Shengli Oilfield Sub-Company, SINOPEC, Dongying 257237, China
A Method For Predicting Fractures In Carbonate Reservoirs Based On Fracture Identification-Sensitive Log-Seismic Parameter Model, Wang Zhiwei, Zhang Kai, Wu Qunhu, Zhang Benhua, Yu Shina, Zhang Zunxiang, Wu Yanjia
Coal Geology & Exploration
Carbonate reservoirs show fractures and strong heterogeneity, leading to limited applications of a single logging or seismic method in fracture identification. Therefore, this study proposed a method for predicting fractures in carbonate reservoirs based on a fracture identification-sensitive log-seismic parameter (FISLSP) model, and the details are as follows: (1) Based on petrophysical analysis results, as well as formation micro-imaging (FMI) logs and the interpretations of fractures at well locations, this study established a segmental fracture identification-sensitive parameter (FISP) model for fractures at well locations; (2) Using the optimal seismic attributes of near-well seismic traces determined based on the high-quality fractured …
Effects Of Increasing Sintering Pressure On The Performance Of Impregnated Diamond Bit,
2023
School of Mechanical Engineering and Electronic Information, China University of Geosciences (Wuhan), Wuhan 430074, China
Effects Of Increasing Sintering Pressure On The Performance Of Impregnated Diamond Bit, Yang Zhan, Tan Songcheng, Fang Xiaohong, Yang Kaihua
Coal Geology & Exploration
The matrix formulas of conventional hot-pressed impregnated diamond bits are mostly elemental metal systems, using WC or YG8 as the skeleton materials, Cu alloys as the bonding materials, and Ni, Co, Fe and Mn as the intermediate materials. Due to the compositions and contents of the bonding and skeleton materials in the formulas, the suitable sintering pressure is limited (≤16 MPa), while the sintering temperature is relatively high (≥ 930℃), resulting in a lower relative ratio of the actual and theoretical densities (≤98%) for the diamond bit matrix. However, the high sintering temperature will cause thermal damage to the diamonds, …
Study On Modification Of Plant Gum Flushing Fluid In Coal-Bearing Strata And Its Mechanism,
2023
State Key Laboralory of Geohazard Prevention and Geoenvironment Protection, Chengdu 610059, China
Study On Modification Of Plant Gum Flushing Fluid In Coal-Bearing Strata And Its Mechanism, Xie Chengchao, Wang Sheng, Yan Peng, Chen Liyi, Li Bingle, Zhang Jie
Coal Geology & Exploration
To improve the adverse effects of the depletion of plant gum resources on the application of flushing fluid in complex strata such as coal-bearing strata, a study was conducted on the compound and crosslinking modification of guar gum. A new type of plant gum flushing fluid (GXB) was developed using xanthan gum as the compound synergist and organic boron as the crosslinking modifier, with cross-linking control agent and inorganic treatment agent as the supplementary. Meanwhile, a series of performance evaluation was carried out. The evaluation results show that GXB has excellent performance and can meet the requirements of drilling in …
Experimental Study On Co2 Storage In Coal Measure Gas Hydrates Reservoirs In Muli Coalfield,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China; College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Experimental Study On Co2 Storage In Coal Measure Gas Hydrates Reservoirs In Muli Coalfield, Lyu Wenyu, Lyu Chao, Zhang Wenzhong, Sun Qiang, Jia Hailiang, Tang Li'an
Coal Geology & Exploration
Carbon Dioxide Geological Storage (CGS) is a promising technology for reducing the greenhouse gas emissions and mitigating the climate change. The hydrate-based CO2 storage in the abandoned gas hydrate reservoir can play a key role in CGS. In this paper, artificial cores of hydrate reservoir were prepared based on the basic physical properties of coal measure gas hydrate reservoir in Muli Coalfield, and the variations in density, porosity and permeability of the core with particle diameter of quartz sand were analyzed. The variations in CO2 hydrate saturation in core were analyzed based on the low-field Nuclear Magnetic Resonance …
Current Situation And Development Trend Of Pressure-Relief Gas Extraction In The Protective Layer Mining In Coal Mines In China,
2023
College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
Current Situation And Development Trend Of Pressure-Relief Gas Extraction In The Protective Layer Mining In Coal Mines In China, Xue Junhua, Xiao Jian, Du Xuanhong, Shi Yu
Coal Geology & Exploration
Deep coal mining in China is seriously restricted by factors including high stress, high gas pressure, and low coal seam permeability. Moreover, with the gradual deterioration of the mining conditions of deep coal seams, it is increasingly difficult to control the gas in these coal seams. Fortunately, the pressure-relief mining of protective layers serves as an efficient way to control gas and eliminate coal and gas outbursts. To meet the demand of practical projects, this paper reviews the studies on the mining technology for protective layers, the law of change in the stress of protected layers, the evolutionary law of …
Balance Analysis And Counterweight Optimization Design For Detection With Orientated Borehole Ground Penetrating Radar Antenna,
2023
School of Mechanical and Electronic Engineering, Pingxiang University, Pingxiang 337055, China
Balance Analysis And Counterweight Optimization Design For Detection With Orientated Borehole Ground Penetrating Radar Antenna, Li Taotao, Xu Xianlei, Xu Hailong, Ouyang Bing, Wang Pengjie
Coal Geology & Exploration
Orientated borehole ground penetrating radar (OBGPR) can effectively solve the problem of orientated and detailed detection of geological conditions around the mine or oil well boreholes and engineering probe hole, etc. In view of difficult state control and unsatisfactory detection effect during antenna sagging due to the changeable medium in deep hole and the unreasonable counterweight of OBGPR antenna, the balance analysis and counterweight optimization design of orientated borehole ground penetrating radar antenna during detection was implemented in this paper. Firstly, analysis was conducted on the force of OBGPR antenna under the balance condition during the deep hole and well …
Table Of Contents,
2023
China Coal Technology and Engineering Group (CCTEG)
Design, Development And Implementation Of A Comprehensive Evaluation System For Multi-Source Information On Water Inrush From Coal Seam Floor,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China; Key Laboratory of Karst Geological Resources and Environment, Ministry of Education, Guizhou University, Guiyang 550025, China; College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China
Design, Development And Implementation Of A Comprehensive Evaluation System For Multi-Source Information On Water Inrush From Coal Seam Floor, Li Bo, Luo Yulan, Fan Juan, Guo Xiaoming, Li Menghua
Coal Geology & Exploration
The evaluation technology of multi-source information fusion is an important method for the prediction of water inrush from the coal seam floor. However, this method has the deficiencies, such as high professional technical requirements, complicated and tedious evaluation process, and insufficient intelligence during its application. In this study, the design principle, design idea, development mode, and development method of a multi-source information comprehensive evaluation system for water inrush from coal seam bottom were systematically described according to the characteristics of the technical process of water inrush risk evaluation. The key functions of system were built, including the universal evaluation index …
Recharge Water Types Of Coalbed Methane Wells: Controlling Effects On Water Yield And Countermeasures,
2023
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
Recharge Water Types Of Coalbed Methane Wells: Controlling Effects On Water Yield And Countermeasures, Du Fengfeng, Ni Xiaoming, Zhang Yafei, Liu Yuru, Wang Wensheng
Coal Geology & Exploration
External water recharge of coalbed methane (CBM) wells leads to high water yield, thus affecting effective pressure propagation within coal seams and ultimately impacting gas production. This study aims to ascertain the influence of different types of recharge water on the water yield of CBM wells, as well as the characteristics of water yield and gas production of these wells under different recharge water types. Based on the exploration and development data of 25 CBM wells in the Shouyang block, this study presented general methods for obtaining the parameters for recharge water type classification and proposed the stepped method for …
Deep Seismic Reflection Profiling Technology In Land Areas: A Review And Prospects,
2023
Center for Geophysical Survey, China Geological Survey, Langfang 065000, China; Institute of Geophysical and Geochemical Exploration, Chinese Academy of Geological Sciences, Langfang 065000, China; National Center for Geological Exploration Technology, Langfang 065000, China; School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China; Liaoning Institute of Geology and Mineral Resources Co., Ltd., Shenyang 110032, China
Deep Seismic Reflection Profiling Technology In Land Areas: A Review And Prospects, Yue Hangyu, Wang Xiaojiang, Wang Lei, Wang Kai, Zhang Baowei
Coal Geology & Exploration
Deep seismic reflection profiling has been internationally proven to be a leading technology for deep earth exploration. With longer arrangement and greater energy than those used in oil seismic exploration, this technology can detect the fine-scaled structures and tectonic features from the earth surface to the upper mantle. Therefore, it is widely applied to the detection of continental and marine crust and upper mantle, with fruitful achievements having been made in revealing deep earth dynamic processes, expounding on the geotectonic evolution, determining the basin-mountain coupling, inferring the metallogenic and reservoir formation conditions, and analyzing earthquake disasters. This paper systematically reviews …
Preparation And Properties Of Acrylate Grouting Material Used In Coal Mine,
2023
CCTEG Xi’an Research Institute (Group) Co. Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China; Guangzhou Chemical Grouting Engineering Co., Ltd., CAS, Guangzhou 510650, China; Guangdong Research and Development Center of Chemical Grouting Engineering Technology, Guangzhou 510650, China
Preparation And Properties Of Acrylate Grouting Material Used In Coal Mine, Zeng Juanjuan, Li Huizhi, Wei Daidong, Xue Wei, Zhu Kaipeng
Coal Geology & Exploration
Water leakage control on the coal mine roof is an inevitable challenge in the process of coal mining. In this regard, chemical grouting provides an effective method to solve this problem. Specifically, acrylate grouting materials were prepared using the synthesized magnesium acrylate solution, cross-linking agent, initiator, and accelerator as the raw materials. Based on this, the effects of the concentration of magnesium acrylates, the type and dosage of crosslinking agent and the dosage of initiator on the properties of the gels of the acrylate grouting materials were investigated. The test results indicate that the type and dosage of crosslinking agent …
