Results 21 to 30 of about 3,889 (269)

Study on the development pattern of continuous aquitard water-conducting fracture zones and rock layer detection borehole camera technology [PDF]

Scientific Reports
The northern part of Guizhou Province is rich in coal resources, but mining safety is threatened by water - bearing strata. This study zeroes in on Longfeng Coal Mine in Guizhou Province and delves into the issue of water damage in coal mines under ...
Enyu Xu, Chao Xu, Xijian Li, Weiguang Zhou, Xianzhong You, Youping Peng, Zewei Dong, Chen Zou, Shoukun Chen   +8 more
doaj   +2 more sources

Deformation characteristics of weakly cemented overburden in Western mining areas in China [PDF]

Scientific Reports
Understanding the deformation behavior of weakly cemented overburden in western coalfields is critical for assessing mining-induced instability and groundwater hazards. Taking the 23 − 2 coal seam of Yili No.
Guanyu Zhang, Haozhen Zhang, Guo Li, Juntao Chen, Long Zhao, Guangneng Zhou   +5 more
doaj   +2 more sources

Research on development law of repeated mining overburden fractures in close inclined multiple coal seams [PDF]

Meikuang Anquan
In the field of roof water hazard prevention and control, the evolution height of water conducting fissure zone is one of the important parameters of water hazard prevention.
Xufeng DONG, Weifu GAO, Haifeng ZHU, Wenbin SUN, Yining CAO, Houcheng CHEN   +5 more
doaj   +3 more sources

Study on the “Two-Zone” Heights in Lower Slice Mining Under Thick Alluvium and Thin Bedrock [PDF]

Applied Sciences
The extraction of thin bedrock coal seams with thick alluvium poses a challenging issue in the realm of coal safety production in China. Especially for mining under aquifers, knowing the development height of water-conducting fracture zones above the ...
Xiaowei Lu, Jingyu Jiang, Wen Wang, Haibo Cao   +3 more
doaj   +2 more sources

Risk Identification Method and Application of Roof Water Inrush Under Multi-Working Face Mining [PDF]

Applied Sciences
Adjacent, multi-working face mining can expand the range of disturbed overburden, increasing the risk of triggering roof water inrush, which threatens the safe operation of coal mines. In this paper, we propose a risk identification method for roof water
Zhendi Huang, Kun Wang, Xuesheng Liu, Yongqiang Zhao, Xuebin Li, Biao Fu, Yu Zhou   +6 more
doaj   +2 more sources

Evolution mechanism of water-conducting fractures in overburden under the influence of water-rich fault in underground coal mining [PDF]

Scientific Reports
Based on the 7618 working face in Yaoqiao coal mine of Datun mining area, the activation mechanism of water-rich faults and the development characteristics of water-conducting fractures in overlying strata under the influence of faults are studied by ...
Cao Zhengzheng, Yang Xiangqian, Li Zhenhua, Du Feng   +3 more
doaj   +2 more sources

Numerical modeling of coupled stress-fracture evolution in water-resisting key strata during longwall mining [PDF]

Scientific Reports
During underground coal mining, the evolution of stress and fracture development within the overlying water-resisting key strata (WRKS) significantly impacts its water-resisting properties, thereby making it a critical factor controlling the stability of
Huadong Gao, Li Ji, Yanli Huang, Junmeng Li   +3 more
doaj   +2 more sources

Development of overlying strata collapse and water-conducting fractured zone in shallow coal seams mining [PDF]

Shuiwen dizhi gongcheng dizhi
Shallow underground mining of coal seams has significant impacts on the overlying rock formations, not only exacerbating surface subsidence but also potentially leading to surface and groundwater loss, thereby affecting the development and safety of the ecological environment.
Hui SHANG, Sihang LIU, Zhihui GAN, Lixiang SU, Yang LIU   +4 more
openaire   +4 more sources

Research on Water-Conducting Fractured Zone Height under the Condition of Large Mining Height in Yushen Mining Area, China [PDF]

, 2023
Accurately predicting the development height of the water-conducting fracture zone (HW) is imperative for safe mining in coal mines, in addition to the protection of water resources and the environment.
Dong Feng, Pengfei Hou, Enke Hou, Xiaoshen Xie   +3 more
core   +1 more source

Adaptive filtering of microseismic data for monitoring a water-conducting fractured zone in a mine

Scientific Reports, 2022
AbstractWater-conducting fractured zones in a rock mass can cause problems in mining. Attempts have been made to monitor their development using microseismic signals. However, due to the lack of prior information, it is difficult to filter out mixed low-frequency interference with traditional denoising methods.
Hongjiang Li, Liang Han, Donglin Dong
openaire   +3 more sources