中国岩溶2018，Vol.37Issue(2)：272-279,8.DOI:10.11932/karst20180214
多道瞬态面波法与微动法联合推断岩溶塌陷区覆盖层的结构和厚度分布
Joint inference of multi-channel transient surface wave method and microtremor method to investigate the structure and thickness of the overburden layer in the typical area of karst collapse
摘要
Abstract
In order to obtain the structure and thickness distribution of the overburden layer in the typical karst collapse area in large scale,multi-channel transient surface wave method and microtremor method were used to carry out field survey in the typical karst collapse area of Dongquan commune in Liucheng country, Liuzhou city.Based on the relationship between the characteristic frequency and the thickness of the forma-tion extracted by the microtremor method,combined with the existing borehole data,the functional relation-ship between the thickness of the covering layer and the characteristic frequency is obtained and the thickness distribution of the overburden layer can be derived.The shear wave velocity distribution of the overburden layer was obtained from the dispersion characteristics of the surface wave,based on which the structural dis-tribution of the overburden layer can be derived.With the structure and thickness distribution of cover layer, four local faults or dissolution trenches in the survey area were inferred.The study shows that the structure and thickness distribution of the overburden layer can be effectively deduced by using the characteristic fre-quency of microtremor and the dispersion characteristics of the surface wave.关键词
多道瞬态面波法/微动法/岩溶塌陷/覆盖层/特征频率Key words
multi-channel transient surface wave method/microtremor method/karst collapse/overburden layer/characteristic frequency分类
天文与地球科学引用本文复制引用
张伟,甘伏平,梁东辉,韩凯,刘伟..多道瞬态面波法与微动法联合推断岩溶塌陷区覆盖层的结构和厚度分布[J].中国岩溶,2018,37(2):272-279,8.基金项目
中国地质调查项目(1212011220191),中国地质科学院岩溶地质研究所所控项目(121237128100273) （1212011220191）
