Results 31 to 40 of about 1,604,914 (120)
Shock failure mechanism of roadway in extra thick coal seam and full anchor cable support technology
Meitan xuebao, 2023 In view of the serious shock failure of roadway in extra thick coal seam, based on elastic mechanics and shock dynamics, this paper studies the shock failure mechanism of roadway in extra-thick coal seam, reveals the main influencing factors of roof coal
Mingshi GAO +4 more
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Combined Support Technology of Large Section Roadway in High-stress Fractured Surrounding Rock [PDF]
, 2011 High-stress fractured surrounding rock roadway occupies a large proportion in mining roadways. In the high-stress fractured surrounding rock roadway, the main reason of roadway's instability and damage is the structural instability of support.
Jianju, Ren +3 more
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Advances in Civil Engineering, 2021 In order to effectively solve a series of problems such as the difficulty of coal and rock interbed roadway support in Gaojiazhuang Coal Mine and get a scientific and reasonable optimization scheme of surrounding rock support, theoretical analysis ...
Chaolin Liu, Guohua Zhang
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Analysis of the impact of the combined use of rebar bolts and FRP bolts in the roadway enclosure
Scientific Reports, 2023 In order to investigate the support effect of the combination of FRP bolts and rebar bolts in the roadway, taking a coal mine as the background of the project, research and analysis of the engineering geological conditions of the mine and the layout of ...
Jinguo Lyu +5 more
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Control theory of uniform strength support in deep roadway
矿业科学学报, 2021 In this paper, a large number of coal mine roadway failure cases are investigated, and 6 types and 15 typical failure forms are extracted.The mechanical characteristics and stress distribution of surrounding rock of typical roadway shapes such as ...
Zuo Jianping +4 more
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Damage evolution and failure warning in early-age flexible-formwork concrete for underground support
Geohazard MechanicsThe evolution law of mechanical properties and damage characteristics of early-age flexible formwork filling concrete have a decisive influence on the stability control of surrounding rock of large deformation roadway.
Zijun Han +7 more
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Surrounding Rock Classification in Deep Roadway of Coal Mine
, 2011 With the increase of mining depth，most coals in China have been deep mining stage. Compared to the shallow roadway, the characteristics of deformation-failure of surrounding rock show significant differences in the deep roadway, and the deep rock ...
Quan Sheng Liu, Bin Liu
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Frontiers in Earth ScienceChina’s coal mines are mainly underground mines, and a large number of roadways have to be excavated underground. It is of great significance for coal mine production to adopt safe and reasonable roadway support methods.
Wanwei Fang +7 more
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Study on Failure Characteristics and Rock Burst Mechanism of Roadway Roof under Cyclic Dynamic Load
Shock and Vibration, 2021 Rock burst is a catastrophic phenomenon that often occurs in underground rock mass engineering. In order to reveal the essence of rock burst of a hard roof in the process of roadway excavation, the particle discrete element method is used to establish a ...
Chunmei Zheng +3 more
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Meitan kexue jishu, 2023 The prominent contradiction between high ground stress and low strength of surrounding rock in deep strata of coal mine leads to large deformation and instability disaster after roadway excavation.
Yanhe LI +3 more
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