地球物理多方法勘探在西安地裂缝探测中的应用  

The Application of Multi-method Geophysical Exploration to the Detection of Ground Fissure in Xi′an Area

作　　者：田中英[1] 孙渊[2] 唐小平[1] 郭伟立[1] 冀显坤[1] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]长安大学地质工程与测绘学院,陕西西安710054

出　　处：《工程地球物理学报》2018年第1期92-97,共6页Chinese Journal of Engineering Geophysics

基　　金：国家自然科学基金青年基金项目(编号:41404110);中国地质调查局地质调查项目(编号:121201011000150016)

摘　　要：在西安市大寨路附近开展了地裂缝地球物理多方法联合勘探研究。首先,分别采用高密度电法、地质雷达及高精度多波地震等地球物理方法进行地裂缝探测,然后根据查明的电阻率、电导率及地震波波场特征,推断解释断裂构造及地裂缝发育和展布情况。根据研究区内地裂缝的展布特征推测其形成原因主要有两种:一是由深部断裂构造作用引起;二是由地下水的过度开采等人文活动引起。这为地裂缝形成机理的研究提供了依据。Geophysical multi-method combined with the exploration of ground fissure has been carried out in Dazhai road of Xi′an city.Based on the identified resistivity,electrical conductivity and seismic wave field characteristics,the fault structure and the development and distribution of ground fissure are deduced by using geophysical methods such as highdensity resistivity,geological radar and high precision multi-wave seismic.According to the distribution characteristics of ground fissures in the study area,there are two main reasons for the formation of ground fissures：one is from the deep fault structure caused by the role;the second is caused by the excessive exploitation of groundwater,which provides the basis for the study of formation mechanism of ground fissure.

关 键 词：地裂缝 多方法地球物理勘探 高密度电阻率法 地质雷达 高精度多波地震勘探 

分 类 号：P631[天文地球—地质矿产勘探]