Results 11 to 20 of about 97 (91)

Elastic wave prospecting of water-conducting fractured zones in coal mining [PDF]

Scientific Reports
In order to understand the development law of water-conducting fractures in overlying strata during the mining process of coal seam, an elastic wave exploration method based on key stratum theory is proposed to predict the height of water-conducting ...
Bingchao Zhao, Shenglin He, Kun Bai, Xiaoxiao Lu, Wei Wang   +4 more
doaj   +2 more sources

Limit Drainage of Separated Tunnel Based on Ecological Groundwater Table: A Case Study

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
After the excavation of the tunnel in water‐rich regions, the groundwater is continuously discharged into the tunnel. Excessive discharge will cause the groundwater table to drop, which will destroy the normal growth of vegetation and ecological balance.
Jianyou Yu, Shensheng Ge, Lingchao Hou, Yiteng Zhang, Yuzhu Liu, Yu Wu   +5 more
wiley   +1 more source

Probability Integral Method Parameter Determination by SBAS‐InSAR Technology and GWO Algorithm

Journal of Sensors, Volume 2021, Issue 1, 2021., 2021
This paper proposed a method based on the SBAS‐InSAR and gray wolf optimization algorithm aiming at the time‐consuming and laborious defects of the traditional method used to obtain the expected parameters of the probability integral method and the shortcomings of the InSAR technology in the field of large gradient deformation detection in the mining ...
Tieming Liu, Tongkang Zhang, Lichuan Chen, Weiming Liao, Yun Shi, Danchao Xu, Hyung-Sup Jung   +6 more
wiley   +1 more source

Study and Application of Similar Material Ratio in Collapsible Loess

Advances in Materials Science and Engineering, Volume 2021, Issue 1, 2021., 2021
The similar material of collapsible loess is the basis and premise of the experimental study on the surface movement and deformation law of coal seam mining in collapsible loess‐covered areas. The orthogonal experiment is used to make up similar material with different proportions using river sand and barite powder as aggregate, clay and gypsum as ...
Bingchao Zhao, Yunxiang Ma, Yaxin Guo, Hao Sun, Jingbin Wang, Hailong Wang, Carlos R. Rambo   +6 more
wiley   +1 more source

Derivative mine dynamic water inrush mode of skylight leakage and its evaluation and control technology system

Meitan xuebao, 2023
The central and western coal resources have the highest degree of enrichment and superior development conditions in China. With the improvement of mining efficiency, the disturbance of high-intensity and large-mining-height mining mode to groundwater ...
Yifan ZENG, Shihao MENG, Qiang WU, Zhenzhong PANG, Kai PANG, Guoqing YANG, Aoshuang MEI, Qiang LI, Sitong WANG   +8 more
doaj   +1 more source

A Study on the Mechanical Properties and Bursting Liability of Coal‐Rock Composites with Seam Partings

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
Geological tectonic movements, as well as complex and varying coal‐forming conditions, have led to the formation of rock partings in most coal seams. Consequently, the coal in coal‐rock composites is characterised by different mechanical properties than those of pure coal.
Dong Xu, Mingshi Gao, Yongliang He, Xin Yu, Jia Lin   +4 more
wiley   +1 more source

Mechanism of deformation and pressure relief control of dynamic gob-side entry surroundings in fully-mechanized caving mining for extra-thick coal seam

Meitan kexue jishu, 2023
Affected by the superposition of working face mining, strong rock pressure phenomena such as rock burst and large deformation easily occur in the gob-side entry when mining extra-thick coal seams. Taking the extra-thick coal seam mining of Caojiatan Coal
GAO Yubing, WANG Qi, YANG Jun, DING Weibo, FU Qiang, XU Xiaoding   +5 more
doaj   +1 more source

Study on Development Law of Mining‐Induced Slope Fracture in Gully Mining Area

Advances in Civil Engineering, Volume 2021, Issue 1, 2021., 2021
The development law of mining cracks in shallow coal seams under gully topography was used as the research base to analyze the development characteristics of mining cracks in the 5‐2 coal mining face of Anshan Coal Mine, and the weak strength was established.
Tao Yang, Yiran Yang, Jie Zhang, Shoushi Gao, Tong Li, Hao Wu   +5 more
wiley   +1 more source

The Comprehensive Identification of Roof Risk in a Fully Mechanized Working Face Using the Cloud Model

Mathematics, 2021
Roof accidents seriously affect the safe and efficient mining of the working faces. Therefore, it is necessary to assess and identify the possible and influencing factors on the occurrence of roof risk in a fully mechanized mining workface. In this study,
Yu Xiong, Dezhong Kong, Zhanbo Cheng, Guiyi Wu, Qi Zhang   +4 more
doaj   +1 more source

Experimental Study on Overburden Deformation Evolution under Mining Effect Based on Fiber Bragg Grating Sensing Technology

Journal of Sensors, Volume 2020, Issue 1, 2020., 2020
In order to study the regularity of overburden deformation and mining pressure changes in the stope. Take the geological conditions of Hanglaiwan coal mine in Yushen mining area as the background, a 3000 mm × 1340 mm × 200 mm physical similar material model was established in laboratory.
Wulin Lei, Jing Chai, Dingding Zhang, Yibo Ouyang, Zhe Ma, Wengang Du, Yongliang Liu, Romeo Bernini   +7 more
wiley   +1 more source