Results 21 to 30 of about 97 (91)

groundwater, drainage experiment, evolution of flow field, hydrogeological parameters, steady flow,

Meikuang Anquan, 2020
The first mining face 122106 in Caojiatan Coal Mine was taken as the research object. The main water filling sources and water filling channels during the mining period of the working face are determined.
HUANG Hao, FANG Gang, LIANG Xiangyang, LIU Yang, HUA Zhaolai, LYU Yang
doaj   +1 more source

Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation

Advances in Civil Engineering, Volume 2020, Issue 1, 2020., 2020
In coal mines, underground roadways are required to transport coal and personnel. Such tunnels can become unstable and hazardous. This study simulates deformation and damage in the rock surrounding a shallow coal seam roadway using particle flow code. A numerical model of particle flow in the surrounding rock was constructed based on field survey and ...
Jiangbo Wei, Shuangming Wang, Zhou Zhao, Delu Li, Lipeng Guo, Fengqiang Gong   +5 more
wiley   +1 more source

Distribution and controlled geological factors of oil-rich coal in shaanxi province

Meitan kexue jishu, 2023
The green, clean and efficient utilization of coal is an important way for the sustainable development of coal industry. Shaanxi province is rich in coal resources, which are mainly distributed in the five coal fields in the north of Shaanxi province ...
YANG Fu, DUAN Zhonghui, MA Li, FU Deliang, TIAN Tao, HE Dan, YUE Mingjuan   +6 more
doaj   +1 more source

Theory and Method of Time-varying Computational Experiments for the Fully Mechanized Mining Process in an Artificial System Environment

IEEE Access, 2019
As mining depth gradually increases, the complex and changeable behavior state of mine production systems leads to the increasingly prominent problem of “planning is difficult to control”.
Zhidong Feng, Shanshan Zhu, Jiang Wu, Hongbo Guo   +3 more
doaj   +1 more source

Driving factors analysis and risk prediction of ecological environment in typical coal mining area of Western China

Meitan xuebao
The extraction of coal seam could induce a series of ecological environment problems in arid and semi-arid mining area of Northwest China. In order to clarify the driving factors of ecological environment in coal mining areas and form an ecological risk ...
Qiangmin WANG, Shuning DONG, Hao WANG, Jie FANG, Xiaodong WANG, Wei CHENG, Shuxuan WANG, Xiyu ZHANG   +7 more
doaj   +1 more source

Mechanism of Dynamic Failure in Roadways with Thick and Competent Roof Strata: A Case Study

Advances in Civil Engineering, Volume 2019, Issue 1, 2019., 2019
Rock and coal dynamic failures have a higher chance to occur when thick and competent roof strata are presented, which can build up a high level of energy. This paper studied the fracturing characteristics of the competent roof strata during longwall face retreat and their effects on roadways’ stability to gain an improved understanding of the rock ...
Jinshuai Guo, Liqiang Ma, Feng Ju, Chengguo Zhang, Fangtian Wang, Shuai Guo, Timo Saksala   +6 more
wiley   +1 more source

Effect of Coal Mining on Springs in the Yushenfu Mining Area of China

Geofluids, Volume 2018, Issue 1, 2018., 2018
The main purpose of this study was to analyze the effect of coal mining on the springs in the Yushenfu mining area of China. The results of two springs and hydrological surveys conducted in 1994 and 2015 were compared to study the occurrence and evolution of springs before and after large‐scale mining.
Li-min Fan, Tao Li, Maoxi Xiang, Weizhong He, Boyun Wu, Jie Peng, Yonghong Li, Cheng Li, Miao-miao Zheng, Jianping Chen, Shuai Gao, Jiangli Du, Yiwei Ji, Fangtian Wang   +13 more
wiley   +1 more source

Theory and engineering practice of coal-water coordinated mining based on constraints of formation bearing capacity

Meitian dizhi yu kantan
BackgroundThe high-intensity mining of coal resources in the Yushen mining area has caused negative environmental effects and water disasters on coal seam roofs, seriously restricting the sustainable development of the area.Methods and Results Based on a
Zhenzhong PANG, Yifan ZENG, Keyao HAN, Qiang WU, Shouqiang LIU, Zhaolai HUA, Gangyi ZHAO, Shuai ZHANG, Huxiong YANG, Xuejun WANG, Feifan LI   +10 more
doaj   +1 more source

Experimental Study on Uniaxial Compression Failure Characteristics and Mechanical Properties of Composite Aquiclude Rock

Geofluids, Volume 2024, Issue 1, 2024.
Composite aquiclude rock is an important part of the water barrier layer of coal seam floor, and its mechanical properties and failure characteristics have an important impact on the safety of coal seam mining. In order to explore the uniaxial compression failure characteristics and mechanical properties of composite aquiclude rocks, the mineral ...
Qiang Sun, Rui Zhao, Xiaolong Li, Hui Yuan, Zetian Zhang   +4 more
wiley   +1 more source

Geological-engineering integrated reconnaissance survey technology for skylights as a hidden disaster-causing factor

Meitian dizhi yu kantan
ObjectiveSkylights represent a primary hidden disaster factor in mines in the southern Yushen mining area within the Shanbei Jurassic coalfield, Shaanxi Province.
Mintao DONG
doaj   +1 more source