硬岩隧道高压气体膨胀破岩开挖试验  

Test on high pressure gas expansion rock fragmentation in hard rock tunnel

作　　者：彭怀德[1] 刘敦文[1] 褚夫蛟 翦英骅 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]山东理工大学资源与环境工程学院,山东淄博255049

出　　处：《岩土力学》2018年第1期242-248,共7页Rock and Soil Mechanics

基　　金：国家自然科学基金资助项目(No.51404303)~~

摘　　要：为了解决传统钻爆法在隧道工程中振动大的问题,引入一种新型破岩技术——高压气体膨胀破岩技术。通过在某隧道掌子面采用该技术进行现场试验,获得该技术试验时的振动速度值和试验后的破岩效果,将获得的结果与传统钻爆法得到的相应结果进行对比分析,结果表明,高压气体膨胀破岩技术在施工时产生的振动比钻爆法小,证明了将该技术应用在隧道工程中是可行的,解决了该隧道采用钻爆法施工振动风险大的问题,为类似工程破岩提供了一种新途径。In order to solve serious blasting vibration problem of the traditional drilling and blasting method for tunnel construction, a new type of rock fragmentation technology--high pressure gas expansion rock fragmentation technology is provided. The values of vibration velocity and effect of rock fragmentation received from field tests by high pressure gas expansion rock fragmentation technology are compared and analyzed with that of traditional drilling and blasting method. The results show that high pressure gas expansion rock fragmentation technology has smaller values of vibration velocity than the traditional drilling and blasting method at the time of construction. The results also prove that it is feasible to use this technology in tunnel projects and the problem of high vibration risk by traditional drilling and blasting method in the tunnel could be resolved through high pressure gas expansion rock fragmentation technology. The high pressure gas expansion rock fragmentation technology provides a new way for relevant engineering projects to break rocks.

关 键 词：高压气体膨胀破岩技术 膨胀管 钻爆法 振动速度 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]