Results 11 to 20 of about 157 (114)

Seismic performance analysis of a submerged “coal pillar–concrete” combined dam body under wet-dry cycles

International Journal of Coal Science & Technology
As a new type of underground water conservancy project, underground reservoirs in coal mines play a crucial role in protecting and utilizing water resources during mining operations.
Mingbo Chi, Hongfei Duan, Fei Xiong, Shuai Zhang, Honglin Liu, Nanyun Wang, Hongzhi Wang, Xianwei Meng, Jianchao Cheng   +8 more
doaj   +4 more sources

Anisotropic mechanical properties of coal in a water-immersed pillar dam: Insights from acoustic emission characterization

Journal of Rock Mechanics and Geotechnical Engineering
Safe operation of underground reservoirs in coal mines is crucial for the coordinated exploitation of coal and water resources in western China. Mine water infiltration significantly influences the stability of the coal pillar.
Ziwan Sun, Ru Zhang, Li Ren, Xiaoling Liu, Zhaopeng Zhang, Ersheng Zha, Xingyu Yang, Zhaohui Liu, Zetian Zhang   +8 more
doaj   +4 more sources

Strength Damage and Acoustic Emission Characteristics of Water-Bearing Coal Pillar Dam Samples from Shangwan Mine, China

Energies, 2023
Long-term erosion and repeated scouring of water significantly affect the technical properties of coals, which are the essential elements that must be considered in evaluating an underground reservoir coal column dam’s standing sustainability.
Yang Wu, Qiangling Yao, Baoyang Wu, Hongxin Xie, Liqiang Yu, Yinghu Li, Lujun Wang   +6 more
doaj   +2 more sources

Damage and Failure Evolution Mechanism for Coal Pillar Dams Affected by Water Immersion in Underground Reservoirs

Geofluids, 2019
In coal mines, underground reservoir systems can increase the availability of water and are an effective technical approach for the protection and utilization of water resources.
Fangtian Wang, Ningning Liang, Gang Li
doaj   +2 more sources

Softening and instability evolution of strip coal pillar under water immersion in goaf [PDF]

Scientific Reports
The softening and instability of the coal pillar caused by water immersion is the primary factor contributing to water inrush in the goaf of the same layer.
Xu Wang, Shangxian Yin, Huiqing Lian, Min Cao, Enke Hou, Xiangxue Xia, Sihai Yi, Tao Yan, Qixing Li, Haorui Wang   +9 more
doaj   +2 more sources

Reasonable Size Design and Influencing Factors Analysis of the Coal Pillar Dam of an Underground Reservoir in Daliuta Mine

Processes, 2023
Underground reservoir water storage technology has become one important way to achieve efficient coal mining and water resource protection in the western mining areas of China, and the width of coal pillar dams is an important factor affecting the safe operation of underground reservoirs.
Zihan Chen, Xidong Zhao, Zhou Han, Yue Ji, Zhongjin Qiao   +4 more
openaire   +3 more sources

A Study on the Development and Evolution of Fractures in the Coal Pillar Dams of Underground Reservoirs in Coal Mines and Their Optimum Size

Processes, 2023
The western mining areas of China, which are rich in coal resources, lack water resources. Large-scale and high-intensity coal mining in China’s western mining areas has led to the loss of groundwater resources. Underground reservoirs in coal mines are an effective means of achieving the protection and utilization of water resources in these western ...
Bao Zhang, Wei Ni, Xiuqiang Hao, Huiqiang Li, Yupeng Shen   +4 more
openaire   +3 more sources

Sulfate diffusion in coal pillar: experimental data and prediction model

International Journal of Coal Science & Technology, 2023
The stability of coal pillar dams is crucial for the long-term service of underground reservoirs storing water or heat. Chemical damage of coal dams induced by ions-attacking in coal is one of the main reasons for the premature failure of coal dams ...
Min Wang, Xun Xi, Qifeng Guo, Jiliang Pan, Meifeng Cai, Shangtong Yang   +5 more
doaj   +2 more sources

Strength hardening and damage mechanism of semiwetted coal under cyclic loads with different initial stress levels [PDF]

Scientific Reports
When a coal pillar serves as part of the dam structure in an underground coal mine reservoir, it is subjected to the combined effects of water immersion and dynamic loading. Therefore, understanding the mechanical properties of coal under such conditions
Feixiang Lv, Yong Zhang, Fanjie Kong, Xiaobin Li, Quanle Zou   +4 more
doaj   +2 more sources

Effect of immersion height on coal mechanical properties and the mechanism of damage failure [PDF]

Scientific Reports
The western region of China is characterized by abundant coal resources but scarce water resources, and underground reservoir systems have been proposed to mitigate this mismatch.
Xiaobin Li, Yulin Hu, Yong Zhang, Fanjie Kong, Weizhi Wang   +4 more
doaj   +2 more sources