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地震勘探已深入到乡镇、城市等人口密集的复杂地表区域,炸药震源对房屋建筑安全影响研究直接关系到激发参数的优化。在大量震源激发与场地振动试验数据的基础上,采用统计分析和回归方法,重点分析了不同炸药震源激发参数引起的场地质点振动的位移、速度、加速度振幅,主频,持续时间以及振动方向等特征参数,总结了场地质点的振动响应、衰减关系、房屋建筑振动特性及其抗震性能。结果表明,激发井深的变化对场地质点峰值衰减快慢的影响比药量变化的影响要大;建筑物对振动速度、位移有明显的放大效应,在距离激发点130和230m处的加速度、速度、位移放大效应尤为突出。
Seismic exploration has deep into the densely populated areas such as towns and cities. The study on the impact of explosives sources on the safety of buildings directly affects the optimization of excitation parameters. Based on a large number of seismic excitation and site vibration test data, the displacement, velocity, acceleration amplitude, dominant frequency, duration and vibration direction of the site particle vibration caused by different explosives source excitation parameters are analyzed empirically with statistical analysis and regression method And other characteristic parameters, summarized the vibration response of the site particle, attenuation relationship, the vibration characteristics of buildings and their seismic performance. The results show that the change of excitation depth has a greater influence on the peak attenuation of site than the change of dose. The building has significant amplification effect on vibration velocity and displacement. The accelerations and velocities at 130 and 230m from the excitation point , Displacement amplification effect is particularly prominent.