Meditate
发表于 2025-3-25 04:08:16
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alcohol-abuse
发表于 2025-3-25 08:09:12
Book 2024 why the critical depth of rockburst in extremely thick coal seam mining is significantly smaller than that in thin to thick coal seams, it also proposes targeted monitoring, warning, and treatment technologies. The prevention and control of coal mine rockburst is a global problem, attracting engine
Cpr951
发表于 2025-3-25 11:39:03
Research on the Mechanism and Prevention of Overall Instability Type Rockburst in Extra-Thick Coal of various types of overall instability type rockbursts, and proposes prevention and control measures, in order to provide a reference for the prevention of overall instability type rockbursts in coal mines.
格子架
发表于 2025-3-25 16:35:10
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起皱纹
发表于 2025-3-25 22:33:58
Introduction,layout, coal pillar retention, etc. Under the action of original rock stress and mining stress, the elastic energy accumulated in the coal and rock mass around the roadway or working face is instantaneously released, causing severe damage. Its prevention and control is an urgent problem to be solved
d-limonene
发表于 2025-3-26 03:53:55
Research on the Mechanism of Rockburst in Extra-Thick Coal Seams,extra-thick coal seam mines is much smaller than that in thin and medium-thick coal seam mines. The rockburst in extra-thick coal seams has common characteristics such as high energy release, strong destructiveness, and large rockburst range. According to statistics, the rockburst range of rockburst
gout109
发表于 2025-3-26 08:04:41
Research on Monitoring and Early Warning of Rockburst in the Heading Face of Extra-Thick Coal Seam, Coal Mine, during the excavation of the soft-hard composite thick coal seam, the phenomenon of coal particle ejection from the soft coal seam is frequent, the vibration lasts for a long time, and the rockburst damage is mainly within 10 m range in front and behind. The existing rockburst theory is
Demulcent
发表于 2025-3-26 10:45:23
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AUGUR
发表于 2025-3-26 16:25:35
Research on Coordinated Control of Rockburst and Large Deformation Along the Gob-Side Entry in Extrating roadways, that is, the problem of “coordinated control of rockburst and large deformation disasters” has become a common technical problem in China‘s deep mines. Existing theories cannot well explain the reasons for the above phenomena. This chapter takes the large deformation of the goaf alon
不感兴趣
发表于 2025-3-26 17:23:36
Research on the Mechanism and Prevention of Overall Instability Type Rockburst in Extra-Thick Coaltwo sides of the roadway, overall instability type rockbursts mainly occur in island working faces and large roadway coal pillar areas, causing serious damage to the coal wall of the working face and the large area of the upper and lower flat roadways. Based on the analysis of several cases of over