煤矿巷道柱式支护形式及新型泵充支柱研究应用

doi:10.13722/j.cnki.jrme.2024.0131

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Abstract Pillar support is an important form of support for coal mine roadways. As China?s coal mines move towards high productivity and efficiency and extend to deep and complex conditions，pillar support is expected to become a new way to solve the problem of surrounding rock control in roadways. This article elaborates on the development history of pillars in domestic and foreign coal mines，discusses the development and changes in pillar materials，equipment，processes，and concepts，and achieves a leapfrog development in support resistance from low resistance of 120 kN to high resistance of 14 000 kN，highlighting the importance and advantages of new pump-filled pillars. The design principle of new pump-filled pillars is theoretically explained，and two types of pillars with temporary cutting and permanent high resistance characteristics are developed. Laboratory tests on 1∶1 scale pillars have been conducted to obtain the bearing law of new pump-filled pillars. A collaborative control mechanism for surrounding rock based on new pump-filled pillars has been constructed，and supporting equipment for efficient mixing and continuous pumping has been developed. A pump-filled hanging process that is “stable，reliable，and practical” has been developed，forming a highly reliable and active support technology for pump-filled support. It is listed that new pump-filled pillars have been applied in various scenarios such as gob-side entry retaining，empty roadways，small coal pillars dynamic pressure roadways，and deep soft rock roadways，successfully solving problems such as coal pillar recovery，rapid withdrawal，dynamic pressure management，and soft rock deformation. It is pointed out that the next research direction is new pump-filled materials and intelligent mining construction equipment，and it should be promoted to rock burst and deep soft rock roadways.

Key words： mining engineering pillar support pump filled pillar active bearing intelligent pumping support collaboration

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	LIU Yuedong1
	2
	WANG Dongpan1
	2

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LIU Yuedong1,2,WANG Dongpan1, et al. Research and application of pillar support form and new pump-filled pillar in coal mine roadways[J]. , 2024, 43(10): 2466-2484.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2024.0131 OR https://rockmech.whrsm.ac.cn/EN/Y2024/V43/I10/2466

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