Results 11 to 20 of about 1,626 (149)
Sustainability, 2023 In order to solve the problem of serious deformation and failure of surrounding rock and difficult maintenance of gob-side entries with strong mining-induced small coal pillars, taking the A110607 return airway of the Shanwenjiaba Coal Mine as the engineering background, the key parameters of roof-cutting and pressure relief control technology for ...
Zhenqian Ma
exaly +3 more sources
Study on roof deformation mechanism and control technology of cross-fault roof cutting and pressure relief self-forming roadway [PDF]
Meitan kexue jishuAiming at the problem that roof deformation of cross fault roof cutting and pressure relief self-formed roadway is large and difficult to support, the mechanism of roof deformation of self-formed roadway in cross fault roof cutting and pressure-relieving
Zhibiao GUO +5 more
doaj +3 more sources
Meikuang Anquan, 2023 In order to solve the problems such as low efficiency, large deviation of drilling angle adjustment and poor directness of drilling in roof pre-splitting drilling technology, ZDY2-300LM slot-cutting drill was developed.
LI Xutao
doaj +3 more sources
Stability mechanisms of soft rock mining roadways through roof cutting and pressure relief: an exploratory model experiment [PDF]
Frontiers in Ecology and Evolution, 2023 IntroductionSoft rock mining roadways are severely deformed and damaged during coal mining. Blindly increasing the support strength not only has little effect but also wastes material resources.MethodsMaintaining the original support parameters, model experiments were conducted to investigate the mechanism of pressure relief protection of the front ...
Tingchun Li
exaly +4 more sources
Mechanism of Roof Cutting and Pressure Relief for Double Roadway Arrangement in Thick Coal Seam
Taiyuan Ligong Daxue xuebao[Purposes] This research is conducted to exploret the roof movement law of double roadway arrangement in thick coal seam and the abutment pressure distribution mechanism of surrounding rock.
HAN Bingcheng +3 more
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Gong-kuang zidonghuaCurrently, research and practice on roadway floor heave mainly explore the deformation mechanism and control technology of roadway floor. The mechanical analysis of floor before and after roof cutting and pressure relief in gob-side entry retaining is ...
SUN Jingkang +5 more
doaj +3 more sources
Meikuang Anquan, 2021 In this paper, according to the current situation of fast deformation, large deformation amount and complicated deformation method of surrounding rock in dynamic pressure roadway, using field test and theoretical calculation method, the hydraulic roof ...
YANG Zheng, DING Yanxiong, GAO Xiaojun
doaj +2 more sources
Energies, 2022 According to the development requirements of green mining of coal resources, it is imperative to improve the extraction rate of coal and the application of safe and efficient mining technology.
Shengrong Xie +8 more
doaj +2 more sources
Meikuang Anquan, 2022 In order to realize the smooth collapse of high-strength composite roof in 1311 working face of Zhaozhuang Coal Industry company and avoid strong ground pressure disaster caused by large-area roof suspension, firstly, the composite pressure relief ...
SI Ruijiang +7 more
doaj +2 more sources
Study on Filling Support Design and Ground Pressure Monitoring Scheme for Gob-Side Entry Retention by Roof Cutting and Pressure Relief in High-Gas Thin Coal Seam [PDF]
Int J Environ Res Public Health, 2022 To ensure the successful application of roof cutting and pressure relief in the gob, to retain the roadway in a high-gas thin coal seam, by taking the 2109 working face of the Mingxin coal mine as the engineering background, this paper comprehensively ...
Kanglin Zhang +3 more
core +2 more sources