深井坚硬顶板回采巷道锚网索支护技术研究

doi:10.11799/ce201607016

Abstract

Abstract: Abstract:The influence of dynamic pressure and high ground stress are bigger in hard roof and deep mines, first weighting interval is bigger and pressure is stronger of hard roof around coal face, which caused higher requirements and greater difficulty for the supporting of gateway. This paper studied collapse characteristics of hard roof and the effect of gateway for hard roof of the 5121(s)B9b working face in the XieYi mine with theoretical analysis and field measurement. With using resin lengthen anchoring strength of the bolt and anchor combined support method in roadway of working face, determining the parameters of bolt anchor support, and making a reasonable support scheme. Field test results show that combined prestressed anchor-sticks support can meet the requirements of deep and hard roof roadway support, the maximum deformation rate of gateway is controlled within 6.1%, assuring that the safety of gateway during excavation and mining

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URL: http://www.coale.com.cn/EN/10.11799/ce201607016

http://www.coale.com.cn/EN/Y2016/V48/I7/50

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Research on the support technology of Bolt-mesh-anchor in hard roof and deep mines

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