Results 11 to 20 of about 6,878 (277)

Study on Fracture Evolution and Water-Conducting Fracture Zone Height beneath the Sandstone Fissure Confined Aquifer

Sustainability
Studying the evolution law of overlying rock fissures and predicting the development height of water-conducting fissure zones is the key to preventing roof water damage, protecting mine water resources, and realizing the safe and sustainable development of the mine. To study the overburden fracture evolution law of coal mining under aquifer conditions,
Jiabo Xu, Yang Daming
exaly   +3 more sources

Study of the Evolution of Water-Conducting Fracture Zones in Overlying Rock of a Fully Mechanized Caving Face in Gently Inclined Extra-Thick Coal Seams

Applied Sciences, 2022
To study the caving of thick hard overburdens and evolution of water-conducting fracture zones in fully mechanized top-coal caving faces of gently inclined extra-thick coal seams, we comprehensively analyzed the 8103 working face of the Beixinyao Coal ...
Yang Zhou, Xueyi Yu
doaj   +2 more sources

Study on Water-conducting Fracture Height of Shallow Buried Coal Seam with Thick Loose Bed and Thin Base Rock

Meikuang Anquan, 2020
Water-conducting fissures formed in shallow seam mining in thin bedrock are easy to cause water resources damage. The determination of the height of water-conducting fissures is the key to avoid the damage of aquifers.
CHEN Hui, CAO Qijia, WEI Zhao, ZHANG Dongdong
doaj   +2 more sources

Research on development height of overlying water-conducting fault zone in shallow seam mining in Shennan Mining Area

Meikuang Anquan, 2023
Aiming at the fact that the water-conducting fissures in the overlying rock may cut through aquifers and induce water inrush disasters by repeated mining of shallow-buried and short-distance coal seams in Shennan Mining Area, this paper adopts the ...
XIE Danghu, WANG Jianwen2LI Minfeng, GUO Shuquan, WANG Eryun, MA Zongyu, DU Chaojie
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

A Case Study of the Water Abundance Evaluation of Roof Aquifer Based on the Development Height of Water-Conducting Fracture Zone

Energies, 2020
In the eastern mining area of Ningxia, China, multi-layered sandstone aquifers are widely distributed in the underground. However, the water abundance of these aquifers is not clear, which brings great challenges to the prevention and control of mine ...
Wen Zhai, Wei Li, Yanli Huang, Shenyang Ouyang, Kun Ma, Junmeng Li, Huadong Gao, Peng Zhang   +7 more
doaj   +3 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

Failure and development height of overlying rock of a water flowing fracture in goaf under a karst aquifer [PDF]

Scientific Reports
The factors leading to mine water inrush accidents are mainly sources of water, water channels, and intensity of water inrush. Mine water rush depends mostly on whether damage leads to the overlying strata of the working face penetrating the overlying ...
Lulin Zheng, Xiong Liu, Qing Qiu, Youwen Tian, Weide Ren, Jin Xu, Xiaokun Wang   +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

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

A Simple and Efficient Way to Detect the Mining Induced Water-conducting Fractured Zone in Overlying Strata

Energy Procedia, 2012
AbstractCoal mining operations in China are often threatened by the invasion of the groundwater into the mining panels. The most likely water disaster affecting the safe operation of coal mines is water from Cenozoic porous aquifers in the alluvial plain areas flooding into the mine.
Zhang, Shengtang, Liu, Yin
openaire   +2 more sources