Results 61 to 70 of about 670,391 (188)

Fine correlation of jurassic coal seams in Maiduoshan Coal Mine on western edge of the Ordos Basin

Meitan kexue jishu
The Maiduoshan Coal Mine on the western edge of the Ordos Basin features a total of 19 coal seams. Most of these seams exhibit unstable spatial distribution, and the area is characterized by complex structures, including folds and numerous faults, making
Yueheng ZHANG, Yanbo ZHANG, Xiangyang LIU, Jinjun LI, Shunfeng ZHANG, Bin LI, Qun LUO   +6 more
doaj   +1 more source

Reasonable stopping method and retracement channel support at fully mechanized top coal caving working face of 15 m extra‐thick coal seam: A case study

Energy Science & Engineering, 2022
Extra‐thick coal seams are widely distributed in the Datong mine area in China. The rapid stopping of mining and the support withdrawal technology for extra‐thick coal seams need to be developed urgently. The reasonable stopping top coal caving distance,
Shengrong Xie, Yiyi Wu, Xiang Ma, Dongdong Chen, Fangfang Guo, Zaisheng Jiang, Hui Li, Hang Zou, Ruipeng Liu, Xiao Zhang   +9 more
doaj   +1 more source

Pre-treatment of coal seam water with coagulation and electrocoagulation [PDF]

, 2017
This thesis examined innovative methods for pre-treatment of coal seam water. In order to prevent scaling and fouling of downstream reverse osmosis membranes we investigated both electrocoagulation and chemical coagulation using aluminium and iron based
Lin, Jack
core   +1 more source

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Dynamic geo‐hydrogeological monitoring‐driven situational awareness for real‐time floor water inrush risk prediction in deep mining

Deep Underground Science and Engineering, EarlyView.
The fused data extracted from the distributed monitoring system as the data basis, combined with dynamic geological data, are imported into a deep learning model. As the geological conditions of mining and excavation change, the risk of water inrush at the working face is retrieved in real time.
Yongjie Li, Huiyong Yin, Fangying Dong, Tao Wu, Chao Zhang   +4 more
wiley   +1 more source

Decompression Deformation and Stress Distribution of Underlying Coal Seam in Upper Protective Coal Seam Mining

, 2020
To grasp the pressure and failure deformation and stress distribution of the underlying coal seam during the mining process of the protective coal seam, and improve the effect of the upper protective coal seam mining to prevent the coal seam and gas ...
SA Zhanyou, WANG Li, LI Lei, LU Weidong, LU Shouqing, YANG Shuai
core   +1 more source

Performance assessment of a potential underground thermal storage facility: Case study of the closed mine Prosper‐Haniel in the Ruhr coal mining area in Germany

Deep Underground Science and Engineering, EarlyView.
This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley   +1 more source

Study on Characteristics of Mining Earthquake in Multicoal Seam Mining under Thick and Hard Strata in High Position

Shock and Vibration, 2021
Rock burst has become one of the most serious world’s problems in coal resources mining, and fracture and movement of thick and hard strata in high position is the main reason to induce strong mining earthquake and rock burst.
Shuli Wang, Guangli Zhu, Kaizhi Zhang, Lei Yang   +3 more
doaj   +1 more source

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Construction and engineering applications of block model for coal seam value considering the variations in coal seam thickness and quality

, 2023
The variations in coal seam thickness and coal quality parameters (i.e., calorific value, volatile matter, ash content, and sulfur content) determine the spatial distribution of coal prices.
Ke, YANG, Lei, KAN, Kai, FU, Feiyue, LIU, Tianhong, YANG   +4 more
core   +1 more source