Results 11 to 20 of about 109,617 (265)

The Training of the Mining Engineer [PDF]

Science, 1904
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openaire   +2 more sources

Analysis of the movement pattern of overburden and the form of spatial development of separation after mining in a fully mechanized caving face

Frontiers in Earth Science, 2023
For the fully mechanized caving face, it is easy to cause significant surface subsidence and other related problems after large-scale mining of coal seams, we should take some measures to solve them.
Wanpeng Huang, Wanpeng Huang, Mingfeng Yang, Yaxin Liu, Le Sui, Mingtao Gao, Mingtao Gao, Xiao Wang, Haibin Gao   +8 more
doaj   +1 more source

Influence of the ultra-fine fly ash dosages on the mechanical properties of the sulfoaluminate cement-based high water backfilling material

Scientific Reports, 2023
To reduce the filling cost of high-water backfilling material (HWBM) in mining backfill and improve the recycling utilization of the industrial waste such as the coal fly ash. The ultra-fine fly ash (UFA) was added to the HWBM as a partial replacement in
Yaohui Sun, Shengrong Xie, Chaowen Wu, Junqi Cui, Dongdong Chen, Fangfang Guo, Zaisheng Jiang, Yuxin Ren, Weiyong Lu   +8 more
doaj   +1 more source

Water-conserving mining influencing factors identification and weight determination in northwest China

International Journal of Coal Science & Technology, 2019
Water-conserving mining is an effective way to alleviate the contradiction between fragile ecological environment and high-intensity coal mining in the arid and semi-arid region of northwest China.
Limin Fan, Liqiang Ma, Yihe Yu, Shuokang Wang, Yujun Xu   +4 more
doaj   +1 more source

Enhancement of Coal Permeability Using Aqueous NaCl with Microwave Irradiation

Geofluids, 2022
Water in coal pores can generate strong steam explosions when treated with microwave irradiation. In order to improve the sensitivity of coal reservoirs to microwaves, we used varying concentrations of NaCl on the pore solution, which further increased ...
Weiming Guan, Qi Qi, Senlin Nan, Haichao Wang, Xin Li, Yingyuan Wen, Junhui Yao, Yanyan Ge   +7 more
doaj   +1 more source

Roadway Surrounding Rock under Multi-Coal-Seam Mining: Deviatoric Stress Evolution and Control Technology

Advances in Civil Engineering, 2020
Multi-coal-seam mining creates surrounding rock control difficulties, because the mining of a coal face in one seam can affect coal faces in another. We examine the effects of multi-coal-seam mining on the evolution of the deviatoric stress distribution ...
Dongdong Chen, En Wang, Shengrong Xie, Fulian He, Long Wang, Qing Zhang, Xiaoyu Wu, Zaisheng Jiang, Yubo Li, Songhao Shi   +9 more
doaj   +1 more source

60 years development and prospect of mining systems engineering

Meitan xuebao
The mining industry is a sector aimed at the safe, efficient, green development, and clean, efficient, low-carbon utilization of mineral resources, serving as a foundational industry for economic and social development.
Jiachen WANG, Yunxi LIU, Yang LI, Lei WANG   +3 more
doaj   +1 more source

Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams

Advances in Materials Science and Engineering, 2022
In order to mater the reasonable layout basis of the terminal mining line position in the repeated mining of close-distance thick coal seams, taking Yan mine as the engineering background, we conducted theoretical analyses, numerical simulations, and ...
Fulian He, Bingquan Liu, Liang Li, Xuhui Xu, Kai Lv, Wenli Zhai, Jiayu Song, Deqiu Wang   +7 more
doaj   +1 more source

Stability analysis and control technology of the sump-surrounding rock under a 1200-m-deep goaf: a case study

Scientific Reports, 2023
In this study, a sump in the Xingdong coal mine (buried at a depth of over 1200 m) was used to analyze the surrounding rock's stability and control technology.
Shengrong Xie, Hui Li, Dongdong Chen, Zaisheng Jiang, Junqi Cui, Ruipeng Liu   +5 more
doaj   +1 more source

Zoning Control Technology of Gob-Side Roadway Driving with Small Coal Pillar Facing Mining in a Special Isolated Island Working Face: A Case Study

Applied Sciences, 2021
The gob-side roadway in an isolated island working face is a typical representative of a strong mining roadway, which seriously restricts the efficient and safe production of underground coal mines.
Changliang Han, Houqiang Yang, Nong Zhang, Rijian Deng, Yuxin Guo   +4 more
doaj   +1 more source