作　　者： (郑智杰）; (敖文龙）; (曾洁）; (甘伏平）; (张伟）;

机构地区： 中国地质科学院岩溶地质研究所,广西桂林541004 国土资源部／广西岩溶动力学重点实验室,广西桂林541004

出　　处： 《水文地质工程地质》 2017年第5期143-149,共7页

摘　　要： 岩溶塌陷往往具有不确定性,隐蔽性及突发性。基于岩溶塌陷的上述特点,文章选取高密度电法、主动源面波法、微动法对泗角村岩溶塌陷区进行综合研究,结果表明:高密度电法能较好地的区分岩土层界面及划分岩溶发育带,但分辨率较低;主动源面波法能较好划分岩土层界面且分辨率较高,但探测深度浅;微动法能较精准地确定岩溶塌陷位置,但抗干扰能力较弱;高密度电法、主动源面波法及微动法结合才能有效查明塌陷区内岩土层结构、确定岩溶发育带位置,并预测划分出塌陷危险区、塌陷潜伏区和相对稳定区,为后续灾害治理工作确定具体范围,给治理施工设计提供科学依据;另外,通过对高密度电法、主动源面波法及微动法解译异常特征的分析,查明了塌陷区塌陷的形成和机井的长年抽水有关。 The Sijiao village is the typical karst collapse area,in which karst collapse is uncertain,subtle and unexpected. Based on the characteristics of karst collapse,this paper selects the high density resistivity method,the active source surface wave method and the microtremor method to make a comprehensive study of this kind of karst collapse. The results indicate that the high density resistivity method can well divide the interface of rock and soil layer and the karst development zones,but the resolution is relatively low; the active source surface wave method can well divide the interface of rock and soil layer,and has a higher resolution,but the detection depth is relatively shallow; and the microtremor can accurately determine the karst collapse position but the anti-interference ability is relatively weak. The combination of the high density resistivity method,the active source surface wave method and the microtremor method can effectively identify the structure of the rock and soil layer in the collapse area,determine the location of the karst development zones,and predict the collapse risk areas,the collapse latent area and the relatively stable area. These work can determine the specific scope of the follow-up hazards treatment work and provides a scientific basis for themanagement of construction design. In addition,it is also found that the formation of collapse is related to the years of well pumping according to the abnormal characteristics of the three geophysical prospecting methods mentioned above.

关 键 词： 高密度电法 主动源面波法 微动法 综合物探 岩溶塌陷