Results 81 to 90 of about 35,277 (264)

An optimizing microseismic method for rock burst early warning based on mining production process

Deep Underground Science and Engineering, EarlyView.
A classification early warning method of rock burst based on hourly microseismic data is proposed, which can be combined with the on‐site production process to provide more timely warning. Abstract Microseismic (MS) events have been reported in nearly every coal mining country, which could well lead to rock burst in underground coal mines.
Zepeng Han, Linming Dou, Wu Cai, Mingbo Chi, Guojun Xi, Shuai Chen, Biao Jiao   +6 more
wiley   +1 more source

Impact resistance performance of rockbolt system with(out) rubber cushion energy absorbing and buffering components

Meitan xuebao
The practice of impact resistance support in dangerous roadways has shown that energy absorbing and buffering components can improve the impact resistance performance of rockbolt support systems. A rubber cushion layer was used as an energy absorbing and
Zhiguo LU, Fuqiang GAO, Jinfu LOU, Shuangyong DONG, Xiangyuan PENG, Gang BAI, Xiaoqing WANG, Lei YANG, Yukai FU   +8 more
doaj   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Research on intelligent conveying technology of 500 m ultra-long face scraper

Meitan kexue jishu
In the field of medium and thick coal seam mining, intelligent mining of ultra-long face is the development trend of coal mining technology, and intelligent transportation is an important part of it.Based on the summary of the problems of the scraper ...
Weixiu CUI, Runqing MU, Hongzhang XIE, Shiyuan YAN   +3 more
doaj   +1 more source

Canaries in the Coal Mine

Professional Case Management, 2021
openaire   +3 more sources

Caving‐enhanced geothermal system overwhelms fracturing‐ and pipe‐enhanced geothermal system in heat extraction

Deep Underground Science and Engineering, EarlyView.
Our study reveals that caving‐enhanced geothermal systems (C‐EGS) with adequately fractured reservoirs achieve optimal heat extraction by minimizing preferential flow paths, while conventional fracturing (F‐EGS) and pipe‐based (P‐EGS) systems suffer accelerated thermal drawdown.
Fangchao Kang, Tianjiao Li, Yingchun Li, Jinlong Men, Chun'an Tang   +4 more
wiley   +1 more source

Study on the evolution law of acoustic emission time series characteristics of coal-rock assemblage under true triaxial conditions

Frontiers in Earth Science
IntroductionThis study aims to investigate the fractal characteristics of acoustic emission (AE) signals during coal-rock rupture and their predictive significance for impact dynamic hazards.MethodsTrue triaxial loading/unloading tests were conducted on ...
Fuquan Gao, Chenyang Zhang, Chenyang Zhang, Lingchen Han, Yongxue Xia, Yongxue Xia, Quanwu Gao, Yiqun Zhou, Yiqun Zhou, Dingyi Li, Dingyi Li   +10 more
doaj   +1 more source

Study of the health effects of coal mining on coal mine workers of Baluchistan

International Journal of Occupational Safety and Health, 2017
Background: The data on coal mine workers was collected from May 2009 to April 2010.Objective:To study the health issues of coal mine workers. Methods: Two types of data were collected. Primary data was obtained through topographic survey and questionnaire while Secondary data about the health   issues, medical facilities and other allied facilities of
openaire   +4 more sources

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Study and application of dynamic response characteristics of support in full-mechanized top coal caving with large mining height

Meitan xuebao
The dynamic response characteristics of stope support include the information of support resistance increase and live column shrinkage, which is not only an important index to reflect the strength of mining pressure behavior in working face, but also the
Xingyu LIN, Gang XU, Zhen ZHANG, Xiaojin GAO, Xiaogang LIU, Qianjin LIU   +5 more
doaj   +1 more source