Results 31 to 40 of about 16,326,882 (286)

Application and effect evaluation of water cutoff curtain technology in Yuanbaoshan open-pit coal mine

, 2022
Yuanbaoshan open-pit coal mine of Inner Mongolia is a rare extra large water rich open-pit coal mine at home and abroad. In order to resolve the problems of high production cost and high environmental risk caused by drainage for many years, it is plan to
Sheng, GAO, Yingjie, GUO, Guozhi, LI, Dongmei, SHAO, Zenglin, TIAN, Hongjun, ZHU   +5 more
core   +1 more source

Microbial diversity and biogenic methane potential of a thermogenic-gas coal mine [PDF]

, 2014
The microbial communities and biogenic methane potential of a gas coal mine were investigated by cultivation-independent and cultivation-dependent approaches.
Wei, Min, Yu, Zhisheng, Zhang, Hongxun, Jiang, Zheng   +3 more
core   +1 more source

Reasonable coal pillar design and remote control mining technology for highwall residual coal resources [PDF]

Royal Society Open Science, 2019
Highwall mining (HWM) technology is an efficient method for exploiting residual coal resources in Chinese open-pit coal mines. However, on-site personnel and equipment can be damaged by the instability of the highwall mining residual coal pillars and ...
Fangtian Wang, Cun Zhang
doaj   +1 more source

Research on intelligent fault diagnosis of mine belt conveyors based on multi-source signal fusion and BA-SMO

Gong-kuang zidonghua
At present, research on fault diagnosis of mine belt conveyors mainly focuses on three aspects: single-signal detection, traditional algorithm modeling, and multi-feature fusion.
LI Zhongfei, LIU Pengfei, SUN Yanhui, WANG Chuang, TAN Shenghu, MA Shuang, ZHANG Yunhe   +6 more
doaj   +1 more source

High Prevalence of Respiratory Symptoms Among Workers in the Development Section of a Manually Operated Coal Mine in a Developing Country: A Cross Sectional Study. [PDF]

, 2007
Few studies of miners have been carried out in African countries; most are from South Africa, where the working conditions are assumed to be better than in the rest of Africa.
Mamuya, Simon H D, Bråtveit, M., Bråtveit, Magne, Mamuya, S.H.D, Mashalla, Yohana, Moen, B.E, Moen, Bente E, Mashalla, Y., Moen, Bente E., Mamuya, Simon H. D.   +9 more
core   +1 more source

Stability Evaluation of Medium Soft Soil Pile Slope Based on Limit Equilibrium Method and Finite Element Method

Mathematics, 2022
The stability of an open-pit slope is an extremely important factor related to the safe production of an open-pit mine. It is the first safety technical problem encountered and should be solved in the process of mine design and production.
Xiaoyan Du, Jinfei Chai
doaj   +1 more source

Small Target Detection Model for Open-Pit Coal Mines Based on UAV Perspective

IEEE Access
To address issues such as missed detection of small targets, low computational efficiency, and difficulties in deploying on edge devices encountered in the detection of uncrewed mining trucks under the complex environment of open-pit coal mines, this ...
Kuan Lv, Haili Yu, Xiangchun Meng, Wenshuai Yang, Haobo Zhang   +4 more
doaj   +1 more source

Experimental study on pulse gas presplitting grouting in water-rich muddy silt layer in open-pit coal mine

Meikuang Anquan
To address the challenges of non-uniform grout diffusion and the difficulty in forming a continuous water cutoff curtain in water-rich muddy silt layers of open-pit coal mines, a novel method combining high-pressure pulsed gas pre-splitting for soil ...
Yan FENG, Yanbo ZHANG, Qinglong YANG, Yanbing XU, Lei ZHANG, Ning HOU   +5 more
doaj   +1 more source

Controlled mining technology of multi-weak bedding down-dipping soft rock slope

Meikuang Anquan
Aiming at the problem of coal at the lower part of multi-weak bedding down-dipping soft rock slope, from the perspective of controllable slope deformation risk and the maximization of resource recovery, based on the analysis of geological data and weak ...
Jiao WANG, Qingdi CUI, Chengjiang LIANG, Daolong QU, Haiyang FENG, Hanquan LIU   +5 more
doaj   +1 more source

Aerosol Jet Printing of Benzocyclobutene as a Thermally Stable, Low‐Loss Dielectric for Multilayer Microwave Electronics

Advanced Materials Technologies, EarlyView.
Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali, Trent Moritz, Mohammad Tayeb Al Qaseer, Ethan B. Secor   +3 more
wiley   +1 more source