Results 1 to 10 of about 73,550 (313)

Canaries in the coal mine [PDF]

European Respiratory Journal, 2013
Up until 30 years ago, coalminers relied on canaries as warning systems against harmful gases and pollutants underground. The miners listened for birdsong and if the birds fell silent, then they knew there was danger to their health and to take action. Today we have much more sophisticated information and reporting on the quality of air.
openaire   +2 more sources

Ground Behaviors Analysis of a Stope Covered by the Thin Bedrock and Large-Thick Alluvium: A Case Study

Shock and Vibration, 2022
Support crushing and roof fall accidents frequently occur in the large mining height stope covered by the thin bedrock and large-thick alluvium (TBLA).
Xiaoping Li, Guangchao Zhang, Guangzhe Tao, Chao Wang, Huaixuan Cao, Xipo Zhao, Xianyang Yan, Shibao Shen, Guanglei Zhou   +8 more
doaj   +1 more source

Analysis on Spatial Disturbance Influence of Surrounding Rock Stress in the Staggered Roadways and Its Control Countermeasures

Shock and Vibration, 2022
Combined with specific engineering examples, the spatial disturbance influence characteristics and laws of the surrounding rock stress in the staggered roadways are analyzed by numerical simulation.
Qingwei Bu, Benqing Yuan, Meng Ye, Nuo Xu   +3 more
doaj   +1 more source

Effect of Moisture on the Macro Failure Characteristics of Weakly Consolidated Mudstone: Mesomechanism

Geofluids, 2022
Mudstone, whose significant characteristic is water-weakening, widely exists in all kinds of geotechnical engineering, which brings great security risks to engineering safety.
Jiahui Xu, Guichen Li, Haoyu Rong, Mohamed Elgharib Gomah, Changlun Sun, Jinghua Li, Suhui Zhang   +6 more
doaj   +1 more source

Study on working resistance distribution of support and resistance increasing characteristics of support partition in longwall face with ultra-large length

Meitan kexue jishu, 2023
The effect of the increase of inclined length of fully mechanized mining face on roof breaking and stress evolution is complex, which leads to regional differences in the support characteristics of support in mining face.
Xingyu LIN, Gang XU, Xiaojin GAO, Zhen ZHANG, Qianjin LIU   +4 more
doaj   +1 more source

Application of the Ultimate Hanging Arch Length of the Layered Roof with Anchors and the Gob-Side Entry Retaining

Shock and Vibration, 2021
The gob-side entry retaining plays an important role in improving working face ventilation, alleviating working face connection, and increasing mining revenue.
Peng Li, Xigui Zheng, Xiaowei Guo, Boyang Li, Cong Wang   +4 more
doaj   +1 more source

In Situ Testing of Rock Burst Damage to Roadway Wall Rock and Support System

Shock and Vibration
Rock burst hazards are a common occurrence during deep coal mining, resulting in the collapse of roadway wall rock and the failure of support structures.
Yukai Fu, Sifeng He, Penghe Zhou, Jiankang Jiao, Junchen Li, Zhuoyue Sun, Jie He   +6 more
doaj   +1 more source

Photographs of the Interior of a Coal-Mine [PDF]

Science, 1884
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openaire   +2 more sources

An Enhanced Security Autonomous Control System for Unmanned Rubber-Tired Vehicles Operating in Underground Mines

Journal of Advanced Transportation
The operating environment in underground mines is complex and fraught with various hazards that pose severe risks to miners’ safety. As an essential auxiliary transportation device in mines, the operational safety and reliability of rubber-tired vehicles
Zhen Tan, Changzhong Ren, Yongjun Gao, Liang Gao, Baorui Jia, Yuan Nie, Ming Du, Ziyan Ma   +7 more
doaj   +1 more source

Response characteristics of mining-induced overburden strata under different degrees of regional fracturing on the roof

Meitan xuebao
To obtain the activity patterns and response characteristics of the overburden strata under different fracturing degrees of the roof, and thereby provide a reference for preventing and controlling roof-dominated rock burst through regional fracturing ...
Jianhong WU, Junfeng PAN, Meihua FENG, Chuang LU, Jiaming GAO, Yaodong YAN, Hongyuan MA   +6 more
doaj   +1 more source