高瓦斯大断面煤巷智能快掘条件下围岩控制研究  

Study on Control of Surrounding Rock under Intelligent Fast Tunneling Conditions in High-gas Large-section Coal Roadway

作　　者：陈大广 武让[2] 夏永琪 张云峰 CHEN Daguang;WU Rang;XIA Yongqi;ZHANG Yunfeng(Shanxi Gaohe Energy Company Limited,Changzhi 047100,China;School of Mining Engineering,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]山西高河能源有限公司,山西长治047100 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭技术》2024年第4期62-67,共6页Coal Technology

摘　　要：针对高河煤矿高瓦斯大断面煤巷智能快掘条件下的围岩控制问题,根据悬吊理论、普氏理论对E2312进风顺槽锚杆、锚索支护参数进行理论计算,初步确定了部分参数,采用数值模拟方法对智能快掘巷道围岩控制效果进行模拟分析,揭示锚杆、锚索协同锚固效应及其双层锚固平衡拱结构形成机理,并确定快掘条件下的最终支护参数。通过对不同支护参数和掘进速度分别制定了多组数值模拟方案,对比分析巷道围岩锚固效应、塑性区发育范围以及顶板下沉量和两帮移近量变化曲线,结合现场工程应用综合分析得出,在一定范围内提高掘进速度的同时,结合对支护参数的优化,更加有利于巷道的围岩稳定控制。In response to the surrounding rock control problem under the intelligent fast tunneling conditions of high gas and large-section coal tunnels in Gaohe coal mine,theoretical calculations were conducted on the E2312 intake channel anchor rod and anchor cable support parameters based on suspension theory and Proctor's theory.Some parameters were preliminarily determined,and numerical simulation methods were used to simulate and analyze the control effect of the intelligent fast tunneling roadway surrounding rock,revealing the synergistic anchoring effect of the anchor rod and anchor cable and the formation mechanism of the double layer anchoring balance arch structure,and determine the final support parameters under fast tunneling conditions.Multiple sets of numerical simulation schemes were developed for different support parameters and excavation speeds,and the anchoring effect of tunnel surrounding rock,the development range of plastic zone,and the variation curve of roof subsidence and two slope displacement were compared and analyzed.Combined with comprehensive analysis of on-site engineering applications,it was found that improving excavation speed within a certain range and optimizing support parameters are more conducive to the stability control of tunnel surrounding rock.

关 键 词：大断面煤巷 智能快掘 围岩控制 支护参数 

分 类 号：TD353[矿业工程—矿井建设]