大断面隧道掘进中炮孔快速堵塞新方法研究  

A New Method for Rapid Blockage of Boreholes in Large-Section Tunneling Excavation

作　　者：马春德[1,2] 刘泽霖 王业顺 龙珊[1] 谢伟斌 赵新浩 MA Chun-de;LIU Ze-lin;WANG Ye-shun;LONG Shan;XIE Wei-bin;ZHAO Xin-hao(School of Resources and Safety Engineering,Central South University,Changsha 410083,Hunan,China;Advanced Research Center,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]中南大学高等研究中心,湖南长沙410083

出　　处：《矿冶工程》2020年第4期6-9,共4页Mining and Metallurgical Engineering

基　　金：新疆维吾尔自治区重大科技专项(2018A03003-2);中南大学中央高校基本科研业务费专项资金(2018zzts734)。

摘　　要：为了提高矿山巷道的掘进速度,针对使用黏土作为炮孔堵塞材料的传统堵塞方式存在的劳动强度大、耗时长、效率低、无法与地下空间大断面隧道快速掘进相匹配的问题,提出了一种"水炮泥+膨胀泡沫"组合式炮孔快速堵塞新方法。实验室内膨胀泡沫堵孔强度实验和新疆东天山特长隧道的现场爆破试验结果证明:与传统堵塞方法相比,该炮孔快速堵塞新方法具有堵孔强度高、炸药单耗低、爆破进尺高、劳动强度低、堵孔耗时短等优势,具有重大的推广应用价值。The traditional plugging method using clay as a plugging material for blast holes is labor-intensive,time-consuming,inefficient,as well as unable to accommodate the rapid advancement of underground large-section tunnel excavation.In view of the existing problem,a new method for rapid blockage of blastholes,consisting of"water stemming plus expansive foam",was proposed.The results from laboratory experiment on the strength of plug with expansion foam and on-site blasting test of the super-long tunnel in Xinjiang East Tianshan prove that the new rapid plugging method for the blasthole,compared with the traditional method,is characterized by high plugging strength,low unit consumption of explosive,high blasting footage,low labor intensity,short time for plugging and among others.It is of great value in promotion and application.

关 键 词：大断面隧道 炮孔 堵塞材料 爆破 水炮泥 膨胀泡沫 

分 类 号：TD714[矿业工程—矿井通风与安全]