【作者】 石朝霞； 张金泉； 李楠；

【Author】 SHI Zhao-xia~1 ZHANG Jin-quan~2 LI Nan~1 (1.Dept.of Resources and Civil Eng.,SDUST,Tai’an 271019,China; 2.Eng.Blasting Inst.,Civil Eng.Dept.,SDUST,Qingdao 266510,China)

【机构】 山东科技大学资源与土木工程系； 山东科技大学土建学院爆破研究所；

【摘要】 泰安抽水蓄能电站地下厂房硐室围岩为新鲜混合花岗岩,岩体完整,采用分层开挖爆破,在下层开挖时为保护岩壁吊车梁的安全稳定,用四川动态测试研究所研制的 EXP2850系统对其震动进行了现场测试,得到了岩壁梁顶端外边缘点的震动速度波形图以及最大震动速度,并采用萨道夫斯基公式对测试数据进行了回归分析,得出了新鲜混合花岗岩体中爆破地震波的传播规律,以此指导后期工程中爆破参数的选择。所得参数可以为类似控制爆破工程提供参考依据。更多还原

【Abstract】 The wall rock of Tai’an pumped storage power station is hard granite.EXP2850 system of Sichuan dy- namic monitoring institute was used in the field test to test the vibration of the concrete rock face beam during the stage excavation and blasting of the lower stratum to protect the safety and stability of the rock-face crane beam. The velocity oscillogram of the points on the top face was obtained.The paper obtains the values of K and a in the empirical equation and the transmitting rule of blasting earthquake wave indwelling the crisp and blending granite through the regression analysis using Sorer’s equation.The conclusions can be used to supervise the later prefer- ences and the scheme of safety command.The transmitting parameters of earthquake wave can provide reference to similar controlled blasting engineering.更多还原