硐室爆破下隧洞振动监测及分析

金堆城南露天揭顶硐室爆破爆区正下方210m有一高6m、宽5m的输水隧洞，为确保硐室爆破时隧洞的安全，硐室爆破分3次进行．通过在隧洞内监测一爆区小药量硐室爆破对隧洞的振动影响，寻找硐室爆破的振动传播规律，为二爆区较大硐室爆破提供参考依据．实践证明，振动监测为指导硐室大爆破提供了重要的依据，也可以为类似硐室爆破下的隧洞安全评估提供参考．

Monitoring and analysis for blasting vibration of the hydraulic tunnel under chamber blasting

210 m under JDC chamber blasting area is a hydraulic tunnel with 6 metres high and 5 metres wide. The chamber blasting was divided into three districts in order to pretect the hydraulic tunnel when the chamber blasting was detonated. The blasting vibration produced in the 1st blasting district was tested to find the earthquake wave transmitting influence of the hydraulic tunnel under chamber blasting, which will pro- vide a reference for the 2na district blasting whose charge is nearly two times to the charge of the 1St blasting district. The experiences have proved that the testing results of chamber blasting earthquake can provide an reference to supervise the later chamber blasting,the transmitting parameter of earthquake wave can provide a reference to simi- lar engineering for salty assessment.