城市间地下管线地震安全性评价研究

城市间地下管线工程,由于它的重要性和特殊性,开展地震安全性评价研究,是十分必要的。通过地质资料分析和现场实地调查,对管线区域和近场区的地震活动性与地震构造环境进行了综合分析评价。在此基础上,划分潜在震源区,确定相关参数,进行了工程沿线地震危险性的分析计算,得出了工程全线平均场地50a超越概率10％的地震加速度区划图。同时,对于工程沿线的地震地质灾害进行了评价。这为管线的抗震设防参数和防震减灾提供合理的依据。

STUDY ON EVALUATION OF SEISMIC SAFETY FOR PIPELINE UNDER GROUND BETWEEN CITIES

Because of importance and particularity, it is essential to study the evaluation of seismic safety for underground pipelines between cities. According to the geology material and on-the-spot investigation, seismic activity and seismotectonic environment along the pipeline are comprehensively analyzed and evaluated., and the potential earthquake region is divided. The relative parameters are determined. In the sites along the pipeline, with 10% probability of exceedance in 50 years, the division map of the peak ground acceleration is given. Meantime, geological disaster induced by the earthquake along the pipeline is evaluated. Thus, the seismic fortification parameters and the important basis for disaster prevent and mitigation are provided.