摘要
为研究隧道施工中上台阶式爆破引起围岩损伤的变化规律,以黑峪隧道改扩建工程中的循环控制爆破为工程背景,采用声波测试仪监测各测点声速,引入损伤因子,录入10次循环爆破引起的总损伤,继而对岩体弹性模量进行折减,研究了隧道围压及其变形规律,为工程施工提供了安全依据。
To study the variation law of surrounding rock damage caused by upper bench blasting in tunnel construction,taking the cyclic controlled blasting in the reconstruction and extension project of Heiyu Tunnel as the engineering background,the sound velocity of each measuring point is monitored by sound wave tester,the damage factor is introduced,the total damage caused by 10 times of cyclic blasting is recorded,and then the elastic modulus of rock is reduced.The confining pressure and deformation law of tunnel are studied to provide safety basis for engineering construction.
作者
李贺朋
周鹏
亓祥成
杨守兴
王恩成
LI Hepeng;ZHOU Peng;QI Xiangcheng;YANG Shouxing;WANG Encheng(The First Company of China Eighth Engineering Bureau Ltd.,Jinan,Shandong 250100,China)
出处
《建筑施工》
2019年第11期2081-2083,共3页
Building Construction
关键词
隧道施工
上台阶式爆破
声波速度
围岩损伤
变形
tunnel construction
upper bench blasting
acoustic velocity
damage of surrounding rock
deformation
作者简介
李贺朋(1985-),男,本科,工程师。通信地址:山东省济南市历下区工业南路65-9号(250100)。电子邮箱:8756349@qq.com。
