摘要
运用围岩松动圈支护理论,对某矿＋588水平大巷新开挖的20 m软岩巷道进行了围岩松动圈测试,确定松动圈厚度在1.06～1.70 m之间,属于中松动圈一般不稳定围岩,原支护方案不能有效控制围岩稳定性,依据测试结果对原支护形式进行了优化,并通过现场工业试验对优化后的支护方案进行了验证。结果表明,该支护方案有效地控制了巷道围岩变形,确保巷道的长期稳定和安全使用。
We tested loose circle of the surl＇ounding rocks in 20 m soft rock roadway at ＋ 588 level main entry of a eoal mine based on surrounding rock loose circle theory. The test results show that the thickness of loose circle is 1.06 ni to 1.70 m, and it belongs to the medium loose circle and general unstable sun＇ounding rock, so the original support scheme can not ensure the stability of the surround- ing rock. It optimized the support scheme and can＇ied out the in - site experiment based on the test resuhs. It showed that the support scheme can control surrounding rock deformation, and ensure the roadway stable and safe, and can provide reference for other similar roadways.
出处
《煤矿安全》
CAS
北大核心
2016年第5期94-96,100,共4页
Safety in Coal Mines
基金
黑龙江省教育厅科研资助项目(12533062)
关键词
软岩巷道
松动圈
声波测试
支护技术
围岩变形
soft rock roadway
loose circle
sonic wave test
support technology
surrounding rock deformation
