【摘要】：針對(duì)伯方煤礦松軟易冒頂板煤層巷道支護(hù)的難題,采用極限平衡區(qū)支護(hù)設(shè)計(jì),并采用FLAC2D軟件進(jìn)行數(shù)值模擬,通過(guò)改變錨桿的長(zhǎng)度、直徑和間排距參數(shù),從圍巖變形的發(fā)展情況來(lái)研究各個(gè)支護(hù)構(gòu)件在控制圍巖變形方面的作用,從而確定優(yōu)化后的支護(hù)方案�，F(xiàn)場(chǎng)實(shí)測(cè)結(jié)果表明,優(yōu)化后的支護(hù)方案冒頂次數(shù)減少,頂?shù)装逡平亢蛢蓭鸵平烤兴鶞p小,優(yōu)化效果顯著。
[Abstract]:In view of the difficult problem of roadway support with soft and easy caving roof in Bofang Coal Mine, the supporting design of limit equilibrium area is adopted, and the numerical simulation is carried out by using FLAC2D software. By changing the length, diameter and spacing parameter of bolt, the parameters of bolt length, diameter and spacing are changed. Based on the development of surrounding rock deformation, the role of each supporting component in controlling the deformation of surrounding rock is studied, and the optimized supporting scheme is determined. The results of field measurement show that the number of roof falls is reduced, the amount of top-floor and two-side approaches is reduced after optimization, and the optimization effect is remarkable.
【作者單位】： 潞安集團(tuán)地質(zhì)處;煤炭資源與安全開采國(guó)家重點(diǎn)實(shí)驗(yàn)室;
【分類號(hào)】：TD353

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本文編號(hào)：2467903