Results 31 to 40 of about 842,296 (153)

Study on the failure and acoustic emission characteristics of coal under graded cyclic loading and unloading stress paths

Scientific Reports
To study the influence of cyclic disturbance stress on the mechanical behavior of coal during mining, a gas containing coal fluid-solid coupling servo seepage experimental system was used to conduct experimental research on the acoustic emission (AE ...
Minke Duan, Meijuan Lu, Ruiqi Ban, Ke Yang, Xin Lyu, Changbao Jiang, Xuelong Hu, Jinzhou Tang   +7 more
doaj   +1 more source

Construction and application of feasibility evaluation model for gas extraction in goafs of abandoned coal mines

, 2022
Against the background of carbon neutrality and carbon peaking policy, the development of gas resources in abandoned coal mines can generate high resource, economic and environmental benefits.
Jing, XU, Xingyuan, QUAN, Ming, YANG, Lin, ZHU, Tao, ZHANG, Maomao, LIU   +5 more
core   +1 more source

Assessment and suitability for the dumping of flyash in an abandoned mine

Environmental Challenges, 2021
The acid mine water body has naturally occurred in the abandoned coal mine. An acid mine water body is the major problem of high sulfur coal mining areas that generate acidic water.
Saba Shirin, Ph.D., Akhilesh Kumar Yadav, Ph.D.   +1 more
doaj   +1 more source

Mechanism and control of strong mine pressure in fully mechanized mining face of shendong mining area when crossing abandoned roadways in the same coal seam

Meitan xuebao
In Shendong mining area, there may be several abandoned roadways ahead of some mining faces due to the adjustment of the face layout. In order to avoid roof accidents when the mining face crossing abandoned roadways, the occurrence conditions of mining ...
Wen LUO, Yihe YU, Wen WANG
doaj   +1 more source

Case study of gas drainage well location optimization in abandoned coal mine based on reservoir simulation model

Energy Exploration & Exploitation, 2021
The development of abandoned coal mine gas has multiple advantages in terms of safety, economy, environment, and society. Due to previous excavations, the gas distribution is heterogeneous, thereby hindering well location optimization.
Guiqiang Zheng, Jiaye Han, Fengyun Sang, Tianxin Gao, Dong Chen, Zhendong Zhang   +5 more
doaj   +1 more source

Surrounding Rock Control Technology When the Longwall Face Crosses Abandoned Roadways: A Case Study

Geofluids, 2021
When a working face is crossing the abandoned roadways, problems such as roof subsidence, rock fracture, and instability will occur, resulting in widespread roof fall and rib spalling, which seriously affect safe and efficient mining on the working face.
Zhenpeng Jiang, Fangtian Wang, Kaijun Miao, Qinghua Cao   +3 more
doaj   +1 more source

Energy storage via storing flood in abandoned mines and low temperature heat energy utilization from mine water

Meitan kexue jishu, 2023
The utilization of underground space in abandoned mines is a key direction supported by the coal industry. By combining underground space utilization, flood storage, and heat supply in winter, this paper proposes a comprehensive utilization model of ...
Yuan ZHANG, Xupeng TA, Peng SHI, Hongwei ZHANG   +3 more
doaj   +1 more source

Subsidence Movements and Structural Damage Related to an Abandoned Coal Mine [PDF]

, 1988
An area in southwestern Illinois has been experiencing surface and subsurface movements with associated damage to surface structures. The area is underlain by an abandoned, partially extracted room-and-pillar underground coal mine.
Chandrashekhar, K., Chugh, Y. P., Missavage, R. J.   +2 more
core  

Characteristics and applications of gas resources in abandoned coal seam groups within mining areas

Meitan kexue jishu
Affected by overcapacity, resource protection, international environment and other factors, the number of closed coal mines in Huainan and Huaibei areas is large, but the available resources of abandoned mines are rich and diverse.
Xuefeng TAO, Biming SHI, Jiwei YUE, Yuehui LIANG, Zhen ZHONG, Haiqing ZHANG, Wenqiang MEI, Yonglin XUE, Jie PENG, Chengcheng ZHANG   +9 more
doaj   +1 more source

Analysis of water-filling process in goaf of closed mine

Gong-kuang zidonghua, 2018
In order to research water-filling problem in goaf of closed mine, taking Daihe Coal Mine as research object， mining space method was used to calculate water-filling volume in goaf of the closed mine according to geological and hydrogeological conditions
BI Yaoshan, WU Jiwen, WANG Guangtao, ZHAI Xiaorong, ZHANG Hongmei, HUANG Kai   +5 more
doaj   +1 more source