破碎煤巷围岩松动范围窥视及支护方案优化研究

doi:10.11799/ce201511015

煤炭工程 ›› 2015, Vol. 47 ›› Issue (11): 44-47.doi: 10.11799/ce201511015

破碎煤巷围岩松动范围窥视及支护方案优化研究

王树岗¹,薛华俊²

1. 华电煤业集团有限公司
2. 中国矿业大学（北京）力学与建筑工程学院

收稿日期:2015-07-07 修回日期:2015-08-04 出版日期:2015-11-12 发布日期:2015-12-07
通讯作者: 薛华俊 E-mail:xuehuajun7792@163.com

Research on variation of surrounding rock flexible range and deformation control countermeasure of crushing coal roadway

Received:2015-07-07 Revised:2015-08-04 Online:2015-11-12 Published:2015-12-07

摘要/Abstract

摘要： 针对高阳煤矿S21101材料巷煤层过厚、工作面断层发育、围岩变形较大等问题，通过窥视仪测试巷道围岩松动圈范围和数值模拟软件对巷道支护方案进行了优化研究。研究结果表明，受复杂地质条件影响，巷道开挖后，围岩松动圈范围不断增大，巷道原始支护方案中锚杆长度不能满足支护要求；根据悬吊理论将巷道左帮和右帮锚杆加长至2.4m和2.2m，锚杆排距缩小为0.8m后，巷道围岩顶板下沉量和两帮移近量较原始支护条件下分别减小约42.0%和38.2%，有效控制了围岩变形。

关键词: 窥视仪, 松动圈, 数值模拟, 悬吊理论, 围岩变形

Abstract: According to the problems of thickness of coal seam, the fault development of the working face, big deformation of surrounding rock, the paper studied the deformation control countermeasure of roadway surrounding rock through testing the loose circle by peering instrument and numerical simulation software. The results showed that the length of anchors could not meet the supporting requirements because the range of loose circle was increasing constantly under the influence of complicated geological conditions after the excavation of roadway. The roadway deformation in the roof and two sides decreased about 42.0% and 38.2% compared with supporting by the original supporting scheme after that the anchors in the left and right sides of roadway were lengthened to 2.4m and 2.2m, the distance between two rows was reduced to 0.8m based on suspension theory. It could effective control the deformation of surrounding rock.

Key words: peering instrument, loose circle, numerical simulation, suspension theory, deformation of surrounding rock

中图分类号:

TD353

王树岗，薛华俊. 破碎煤巷围岩松动范围窥视及支护方案优化研究[J]. 煤炭工程, 2015, 47(11): 44-47.

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破碎煤巷围岩松动范围窥视及支护方案优化研究

Research on variation of surrounding rock flexible range and deformation control countermeasure of crushing coal roadway

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