摘要
为了解决某铜矿深部中央运输巷道变形破坏严重问题,在工程地质调查的基础上,分析了巷道的变形特征和巷道变形的原因,提出了底梁加固底板、两帮采用锚索支护,并加密钢拱架的支护方案。结合巷道的赋存条件,建立该中央运输巷道的三维数值模拟模型,分析不同支护参数情况下巷道的稳定性。计算结果表明,减小钢拱架排距比减小锚索排距对巷道的稳定性影响更大,最优的巷道支护参数为:钢拱架的排距为0.8m,锚索的排距为2.4m。现场工程应用结果表明巷道的稳定性得到有效控制,能为矿山的安全生产提供保证,也可为类似工程提供一定的借鉴。
In order to solve the problem of serious deformation of the central haulage roadway in one copper mine, on the basis of the engineering geological investigation, the deformation characteristics and causes of the roadway deformation were analyzed, the support scheme of floor mudsill to reinforce the floor, grouting anchor cable and encryption of the U-steel shelf arch was proposed. Combined with the occurrence conditions of the roadway, the three dimensional numerical simulation model was established, and the stability of the roadway on different support parameters was analyzed. The calculation results show that by minimize the array pitch of U-steel shelf arch is more remarkable than minimizing the array pitch of the anchor cable bolt, and the optimized support parameters are： the array pitch of the U-steel shelf arch is 0.8m, the array pitch of the anchor cable bolt is 2.4m. Engineering practice shows that this technology has been successfully applied to control the deformation of the roadway, which can guarantee the safety production of the mine, also can provide a certain reference to the similar projects.
出处
《铜业工程》
CAS
2017年第1期28-33,共6页
Copper Engineering
基金
国家自然科学基金面上项目(51674012)
关键词
中央运输巷道
变形特征
数值模拟
支护参数
稳定性
central haulage roadway
deformation characteristics
numerical simulation
support parameters
stability
