爆破震动对房屋影响的评价与控制研究

Evaluation and controlling of Blasting Vibration Effects on Buildings

爆破地震是爆破主要危害之一。为保证工程爆破时爆区周围建筑物等的安全,对爆破的地震效应进行实测和控制是必要的。根据狮子山爆破工程现场爆破振动测试得到的数据,经数学回归分析处理,得到该爆破工程的爆破振动传播经验公式,由所得到的公式计算出在不同的爆破药量下不同距离处建筑物的振动速度,再参照不同类型建筑物在爆破时所允许的安全振动速度标准,对爆区周围民用建筑的安全进行了评价,以便在实际中根据房屋保护要求,给出石方爆破的安全药量。

Seismic shock is one of the main hazards of blasting engineering, therefore, for the safety guarantee of buildings in near field blasting, tests and controlling measures on blasting vibration elects are necessary. The blasting vibration data at SHIZI mountain was observed, analyzed and p roeessed, and the decay experience formula of blasting earthquake wave was obtained. The vibration velocity of buildings at different distance was calculated by the decay experience formula, with reference to the safety level of blasting vibration of buildings in our country, and the safety of buildings near the blasting area was evaluated. The safety dislance of blasting vibration for different buildings was given out.