Establishment Of A 3d Solid Model Blasting Rock Mass Based On Intelligent Lithology Identification,
2022
College of Mines, Liaoning Technical University, Fuxin 123000, China
Establishment Of A 3d Solid Model Blasting Rock Mass Based On Intelligent Lithology Identification, Chen Yingxian, Wang Pengfei
Coal Geology & Exploration
With the development and application of intelligent drilling machine, the lithology data of blasting borehole can be obtained accurately. The blast-hole database is established to store and manage the intelligently identified blast-hole data. Taking the rock property data of blast hole as the sample, the inverse distance square method is used to interpolate the solid elements within the blasting area to generate the 3D solid model of blasting rock mass. The 3D solid model of rock mass was cut by using the polygon of blasting area and the triangular network of bench, and then the 3D solid model of blasting …
Establishment And Application Of Four Basic Data Accounts For Coal Mine Water Control,
2022
School of Resources and Earth Science, China University of Mining and Technology, Xuzhou 221116, China; Inner Mongolia Shanghai Temple Mining Co. Ltd., Ordos 016299, China
Establishment And Application Of Four Basic Data Accounts For Coal Mine Water Control, Lyu Yuguang, Li Mingzhen, Hu Falun, Liu Shuang
Coal Geology & Exploration
Mine water inflow, aquifer water level, analysis data of water quality and formation information are closely related to water prevention and control. It takes a long time to collect a large amount of data. The relevant technical specifications clearly require the establishment of an account for data management, but there is no unified and practical account format, and detailed description of its purpose. Microsoft Excel is used to establish four basic data accounts of mine water inflow, aquifer water level, hydrochemistry and information on stratum. The format of the account is standardized, and the methods for data application of each …
Formation Of Permafrost And Its Influence On Natural Gas Hydrate Accumulation In Muli Region, Qinghai Province,
2022
School of Civil Engineering and Architecture, Xi’an University of Technology, Xi’an 710048, China
Formation Of Permafrost And Its Influence On Natural Gas Hydrate Accumulation In Muli Region, Qinghai Province, Wang Liping, Zhu Yinghao, Li Ning, Xu Shuanhai, Tian Yanzhe, Liu Naifei, Wang Wenli
Coal Geology & Exploration
The characteristics of the existing permafrost and natural gas hydrates were summarized and analyzed by studying the natural gas hydrate formation in Muli Region, Qinghai Province. On the basis of the evidence of the Quaternary climate survey and the available geological exploration data on the Qinghai-Tibet Plateau, FLAC3D was used to simulate and calculate the formation of permafrost. The calculation results show that the existing permafrost probably formed during the late Holocene Neoglacial(4 000-3 000 to 1 000 a BP), and a stable boundary at bottom of the permafrost layer formed after about 170 a of cooling at a …
Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities,
2022
Tourism College of Beijing Union University, Beijing 100101, China
Green Transformation Paths Of Closed Coalmine Industrtry In Coal Resources Cities, Zhang Lifeng, Wang Qiuju
Coal Geology & Exploration
With the implementation of China's energy supply-side structural reform and coal production capacity policy, the number of coal mines closed in China is increasing year by year, and how to transform the industry after the closure of coal mines has become an urgent problem. Most of the closed coal mines are concentrated in coal resource-based cities, and the development of closed coal mines is inseparable from the development of coal resource-based cities. The selection of their advantageous industries should be consistent with the direction of industrial transformation of the cities where they are located, so as to to make effective …
Construction And Application Of Gas Resource Estimation And Evaluation Method In Abandoned Coal Mines,
2022
College of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Henan Polytechnic University, Jiaozuo 454000, China; Collaborative Innovation Center of Coal Work Safety and Clean High Efficiency Utilization, Jiaozuo 454000, China
Construction And Application Of Gas Resource Estimation And Evaluation Method In Abandoned Coal Mines, Liu Xiaolei, Yan Jiangwei, Liu Cao, Jia Tianrang, Feng Zhendong, Wei Jianping, Wei Guoying
Coal Geology & Exploration
On the basis of on the exploration and development status of gas resources in abandoned coal mines in China, the idea of “resource estimation + preliminary evaluation” was put forward to reasonably evaluate the gas resources in abandoned coal mines. The estimation and evaluation method of gas resources in abandoned coal mines was established, which has the advantages of less required parameters and strong practicability. According to the gas emission characteristics and abandoned time, the types of abandoned coal mines were divided into two categories: stable and unstable. Unstable coal mines were further divided into early, middle and late stages …
Mineral Composition Characteristics And Petroleum Geological Significance Of Tight Sandstone Of Longtan Formation In Weixin Area, Eastern Yunnan,
2022
Key Laboratory of Coalbed Methane Resources and Accumulation Process of Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
Mineral Composition Characteristics And Petroleum Geological Significance Of Tight Sandstone Of Longtan Formation In Weixin Area, Eastern Yunnan, Xing Huitong, Zhang Xiaoli, He Jinxian, Cao Wenjie, Yang Tiantian, Wang Jian, Shi Shuai
Coal Geology & Exploration
Tight gas is an unconventional resource developed in low-porosity and ultra-low permeability sandstone and has rich potential oil and gas reserves. However, due to its tight and low permeability, fracturing is a necessary means for efficient development of tight gas. The reservoir characteristics and material composition of sandstone are of great significance to the preliminary evaluation of resource potential and production capacity of the dense sandstone reservoirs. By using X-ray diffraction, microscopy, scanning electron microscopy and other technical means, ten outcroppings of tight sandstone from coal measures of Permian Longtan Formation in Weixin area of eastern Yunnan Province were qualitatively …
Characteristics Of Coal And Gas Outburst And Controlling Mechanism Of Stress Field In The Hanging Wall Of Normal Faults,
2022
Research Center of Coalbed Methane/Gas Geology and Engineering, Henan Polytechnic University, Jiaozuo 454000, China; Henan International Joint Laboratory for Unconventional Energy Geology and Development, Jiaozuo 454000, China; Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Henan Province, Jiaozuo 454000, China
Characteristics Of Coal And Gas Outburst And Controlling Mechanism Of Stress Field In The Hanging Wall Of Normal Faults, Cao Yunxing, Zhang Haiyang, Zhang Zhen, Liu Gaofeng
Coal Geology & Exploration
The fault zone is the main geological unit where coal and gas outbursts occur. Statistics of many coal and gas outbursts show that the number and intensity of the outbursts in the hanging wall are significantly greater than those in the foot wall for normal faults. However, there are few studies on the geological mechanism of this phenomenon, especially the variation of the in-situ stress field in the hanging wall of normal faults before and after mining, and its controlling mechanism of coal and gas outbursts that has not been completely demonstrated. In view of this, the normal fault DF …
Propagation Characteristics Of Flame Wave And Shock Wave During The Gas Explosion In Complex Pipeline Network,
2022
College of Safety Science and Engineering, Liaoning Technical University, Fuxin 123000, China; Key Laboratory of Mine Power Disaster and Prevention of Ministry of Education, Liaoning Technical University, Huludao 125105, China
Propagation Characteristics Of Flame Wave And Shock Wave During The Gas Explosion In Complex Pipeline Network, Jia Jinzhang, Wang Dongming, Niu Xin, Li Bin, Zhu Jinchao, Wang Fengxiao
Coal Geology & Exploration
For the purpose of further exploring the flame wave propagation characteristics of the gas explosion shock wave, the gas explosion experiment was carried out in a complex pipe network designed and built by ourselves. In the experiment, a high precision pressure sensor and a temperature sensor were used to collect pressure changes and temperature peak data. By using the flame sensor to collect the flame wave signal in the process of explosion, the flame wave propagation velocity was calculated according to the theoretical formula, and the Origin software was used to comprehensively process the experimental data to study the shock …
Construction And Application Of “Coal-Water-Environment” Coordinated Development Evaluation Index System：A Case Study Of Sihe Minefield,
2022
School of Earth Science and Engineering, North China University of Water Conservancy and Hydropower, Zhengzhou 450045, China
Construction And Application Of “Coal-Water-Environment” Coordinated Development Evaluation Index System：A Case Study Of Sihe Minefield, Wang Qingwei, Guo Biao, Song Mei, Yan Qiang
Coal Geology & Exploration
The scientific construction of the relationship among coal, water, and the environment is the basis of green coal development during the process of coal mining. This paper focus on the coal mining and protection of water resources and the ecological environment, and builds a green coordinated development evaluation index system by taking coal, water and environment into consideration. In this study, the methodology used is holistic and hierarchical principles of system theory. The selection of indicators considering resource factors, technological development and environmental concept progress are determined in accordance with the latest industry regulations, technical standards and local guiding planning. …
Soil Fertility And Heavy Metal Risk Assessment In Jvhugeng Mining Area, Muli Coalfield, Qinghai Province,
2022
China National Administration of Coal Geology, Beijing 100038, China; Jiangsu Design Institute of Geology for Mineral Resources(the Testing Center of China National Administration of Coal Geology), Key Laboratory of Mineral Resources in Coal Measures of China National Administration of Coal Geology, Xuzhou 221000, China
Soil Fertility And Heavy Metal Risk Assessment In Jvhugeng Mining Area, Muli Coalfield, Qinghai Province, Wang Tong, Zhang Mei, Xu Hui, Zhang Guchun, Wang Yanjun, Fang Huiming, Li Yuan
Coal Geology & Exploration
The mining of coal resources at the Jvhugeng mining area, Muli Coalfield, has damaged the ecological environment of the mining area. Through the determination of soil fertility indexes and heavy metal indexes in the study area, soil fertility and heavy metal ecological risks are evaluated by the principal component analysis method and the potential ecological hazard index method. The results show that the soil in the mining area is alkaline as a whole, rich in organic matters, total nitrogen, and available potassium, but lacking in available phosphorus. It has the characteristics of being rich in nitrogen potassium and poor in …
Directional Drilling Technology And Equipment For Gas Drainage In Large Panel Of Underground Coal Mines,
2022
Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China
Directional Drilling Technology And Equipment For Gas Drainage In Large Panel Of Underground Coal Mines, Xu Chao, Jiang Lei, Chen Pan, Zhang Di
Coal Geology & Exploration
In recent years, with the progress of directional drilling technology and equipment in underground coal mines, a new model of advanced and comprehensive control of gas in the large panel of Baode Coal Mine is formed by covering the whole work with ultra-long directional drilling along the coal seam, hence the panel of the unexcavated roadway can be fully pre-pumped in advance to avoid gas overrun. As gas extraction in large panel requires a single construction along the coal seam borehole to run through the whole working face length, this paper starts from the construction technology of ultra-long directional drilling …
Table Of Contents,
2022
China Coal Technology and Engineering Group (CCTEG)
Present Situation And Prospects Of Tourism Resource Evaluation In Abandoned Mining Areas,
2022
Tourism College of Beijing Union University, Beijing 100101, China
Present Situation And Prospects Of Tourism Resource Evaluation In Abandoned Mining Areas, Wang Qiuju, Wang Yue, Ma Yuying, Zhang Bo
Coal Geology & Exploration
The identification and evaluation of tourism resources are important basis for tourism planning and development in abandoned mining areas. This paper adopts literature review method and inductive analysis method to comprehensively sort out the domestic and foreign research results on the value evaluation of tourism resources in abandoned mining areas, and systematically analyze the identification, evaluation system construction and evaluation methods of tourism resources in abandoned mining areas. It is found that the current understanding of tourism resources in abandoned mining areas is only at the level of mining relics and mining heritage, lacking emphasis on the natural resources such …
Research On Redevelopment Model Of Abandoned Mining Land From The Perspective Of Property Right Policy,
2022
College of Architecture and Design, China University of Mining & Technology, Xuzhou 221116, China
Research On Redevelopment Model Of Abandoned Mining Land From The Perspective Of Property Right Policy, Deng Yuanyuan, Chang Jiang, Feng Shanshan, Zhou Xue
Coal Geology & Exploration
The reuse of abandoned mines has become the main path for resource-based cities to realize functional transformation. The redevelopment of mining land belongs to the renewal of urban stock industrial land, which is a spatial transformation process accompanied by property right transfer. The research on the evolution of the relationship between relevant property rights policies and abandoned mine redevelopment model is helpful to understand the impact of the policy and put forward suggestions for future policies. This paper combs the national and local property rights policies since 1990, takes the redevelopment practice in different times of this period as an …
Refined 3d Modeling Of Rock And Mine Specimens In Xishan Coalfield And Its Virtual Simulation Platform Construction,
2022
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
Refined 3d Modeling Of Rock And Mine Specimens In Xishan Coalfield And Its Virtual Simulation Platform Construction, Zhang Qiongyue, Chen Liming, Zhao Jingui, Wang Jianmin
Coal Geology & Exploration
Rock and mineral specimens are unique and non-renewable. The traditional collection display is not convenient for professional academic exchanges, which limits the efficient development of the popularization of geosciences. 350 representative rock and mineral specimens of Xishan Coalfield in Taiyuan City are collected to explore the fine 3D modeling of small-scale rock and mineral specimens and to construct a virtual simulation platform. First, the multi-view image 3D reconstruction technology to design a matching three-dimensional ring object photography device is used to collect image data. Then modeling accuracy is optimized from two aspects of original image quality and modeling software. Finally, …
Geochemical Characteristics Of Rare Earth Elements In Surface Sediments From Huainan Coal Mining Subsidence Area, Anhui Province, China,
2022
College of Resources and Environmental Engineering, Anhui Province Engineering Laboratory for Mine Ecological Restoration, Anhui University, Hefei 230601, China
Geochemical Characteristics Of Rare Earth Elements In Surface Sediments From Huainan Coal Mining Subsidence Area, Anhui Province, China, Qian Yinghua, Zheng Liugen, Chen Yuanping, Jiang Chunlu, Chen Xing, Chen Yongchun
Coal Geology & Exploration
Rare earth elements(REEs) are widely used in environmental geochemical analysis process research due to their unique chemical characteristics. This study investigated the geochemical characteristics of rare earth elements in surface sediment from the Huainan coal mining subsidence area, Anhui Province, China. Twelve surface sediment samples were collected from Panyi, Guqiao and Xieqiao subsidence areas in the study area. The content of rare earth elements in the samples was tested and analyzed by ICP-MS, and the distribution characteristics and controlling factors of REEs and its material sources were discussed. The results show that the rare earth element content in the surface …
Progress In Investigation Technology For Coal Mine Goafs Under Buildings And Structures In China,
2022
China Coal Science & Technology Ecological Environment Technology Co. Ltd., Beijing 100013, China; i’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China; Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China
Progress In Investigation Technology For Coal Mine Goafs Under Buildings And Structures In China, Liu Xiaoping
Coal Geology & Exploration
The investigation of goafs in the coal mine is a major technical problem that restricts the normal engineering construction and safe operation of the upper site. Looking back at the establishment of coal mine goaf prospecting technical specifications in China, the results obtained in the past three decades are reviewed in the goaf prospecting methods, the deformation prediction, stability evaluation, etc. Some representative problems are pointed out in the current actual investigation work, such as the poor guidance of the investigation outline, the inadequate integration of drilling technical requirements with the investigation work, the inability of engineering geophysical exploration to …
Principle Of A Self-Protective Sealing Device For Mwd And Its Influencing Factors,
2022
China Coal Research Institute, Beijing 100013, China; Xi’an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi’an 710077, China
Principle Of A Self-Protective Sealing Device For Mwd And Its Influencing Factors, Wang Yaoming, Ye Genfei, Zhao Yongzhe, Gao Ke, Liu Weiwei, Duan Huijun
Coal Geology & Exploration
For deeper drilling depth and longer service life of MWD, a self-protection sealing device for the MWD instrument is designed given the defects of the combined static sealing structure. The relationship between rubber airbag expansion displacement and air pressure was studied through static expansion numerical simulation. On this basis, the reasons for different results due to different model sizes were analyzed, and the factors causing the different simulation results of the self-protection sealing device were discussed. The four independent variables of airbag diameter, width, wall thickness and inner cavity width were determined and simulated to explore their relationship with the …
Temporal And Spatial Changes Of Terrestrial Water Storage In Yellow River Basin Based On Grace,
2022
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology(Beijing), Beijing 100083, China; College of Geoscience and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China
Temporal And Spatial Changes Of Terrestrial Water Storage In Yellow River Basin Based On Grace, Yang Fei, Zhang Chengye, Li Jun, Song Ziheng, Guo Tianyu
Coal Geology & Exploration
The Yellow River Basin is currently the main gathering place both for economically recoverable coal and coal production in China. Understanding the water sources and its changes is not only a prerequisite for promoting the intensive use of water in the Yellow River Basin, but also the basis for carrying out the ecological protection and sustainable development of the mining areas in the Yellow River Basin. Compared with traditional methods for monitoring terrestrial water storage that are limited by the distribution and number of monitoring points, GRACE provides a new way to study the temporal and spatial changes of water …
Use Of Insar In Linear Discontinuous Ground Deformation Generation Analysis: Case Study Of A Mine In Poland,
2022
Central Mining Institute, Department of Geology, Geophysics and Surface Protection, Katowice, Poland
Use Of Insar In Linear Discontinuous Ground Deformation Generation Analysis: Case Study Of A Mine In Poland, Bartosz Apanowicz
Journal of Sustainable Mining
Linear Discontinuous Ground Deformations are defined as fissures and steps, as well as structural forms composed of them. They occur on the surface as a result of underground mining. Knowledge of LDGDs has been acquired through field observations which are subsequently described in the scientific publication. Records of LDGDs are made by using the classic surveying method. The paper reviews the created LDGDs in the years 2015–2019 in one of the mines of the USCB. The analysis covers the velocity of subsidence as a result of underground mining and the values of horizontal strains determined according to the Knothe-Budryk theory. …
