路堑爆破开挖地震效应分析

在分析爆破地震效应的主要控制因素地震速度与地震频率基础上，根据现场测定数据，拟合出地震速度、药量大小与爆源距离之间关系式。分析了振动频率对构筑物的影响和爆破地震与天然地震的区别，提出了爆破安全距离的确定并验证了爆破安全距离计算方法以及地震速度作为破坏判据可行性和正确性。试验测定结果与研究表明，必须重视爆破地震规律及其对各种建筑物和构筑物影响的研究，才能充分发挥爆破技术的经济效益和最大限度地降低爆破振动的危害。

Seismic Effect Analysis of Cutting Blasting Digging in High Way

A seismic effect is main harm in engineering blasting. By analyzing Seismic velocity and frequency of the main control factors of them, according to the data measured on the spot, the relation formula among Seismic velocity and dynamite and the distance between blasting fountain are obtained. Effects on buildings produced by vibration frequency and differences between blasting earthquake and natively seismic are analyzed. The calculation of blasting safety distance and selecting standard of breakage judge are studied and validated. The results of experiment and research indicate that we should attach importance to blasting seismic rules and effects on different buildings in order that basting techniques bring much economy benefits and reduce harm of blasting vibration as possible as much.