物探技术在堰塞体结构特征探测中的应用  

Application of Geophysical Prospecting Technology in the Detection ofStructural Characteristics of Barrier Body

作　　者：熊友亮 王鹏[1] 高建华[1] 彭军[1] 李欢[1] 余修毕 Xiong Youliang;Wang Peng;Gao Jianhua;Peng Jun;Li Huan;Yu Xiubi(Changjiang Institute of Survey Technical Research of Ministry of Water Resources,Wuhan,Hubei 430011)

机构地区：[1]水利部长江勘测技术研究所,湖北武汉430011

出　　处：《资源环境与工程》2023年第6期808-815,共8页Resources Environment & Engineering

基　　金：国家重点研发计划项目——堰塞坝险情处置与开发利用保障技术与装备研发(2018YFC1508500)。

摘　　要：目前有关堰塞体应急抢险的结构探测方法技术较少,为研究堰塞体物质结构组成,选用高密度电法和天然源面波法对4个堰塞体进行探测试验,通过电阻率值和面波速度值分析堰塞体的结构特征、物理力学特性及渗流特征。结果表明,电阻率值和面波速度值与堰塞体物质组成有着较好的对应关系,电阻率和面波速度高值对应于大块径块石富集区或基岩,电阻率及面波速度低值对应于小块径块石或松散物质。同时通过试验认为高密度电法和天然源面波法在堰塞体上的应用是可行的,高密度电法数据处理较简单方便,但是探测深度较浅,限制因素较多;而天然源面波法数据处理较为复杂,但是探测深度大,在不同岩性堰塞体上都能适用,具有更广泛的适用性,可为堰塞湖应急处置提供有力的科学依据。At present,there are few structural detection methods and techniques related to the emergency exploration of the barrier body.In order to study the composition of the material structure of the barrier body,this paper selects the high-density electrical method and the natural source surface wave method to carry out the detection test on four barrier bodies.Through the resistivity value and the surface wave velocity,the structural characteristics,physical and mechanical properties and seepage characteristics of the barrier body are analyzed.The results show that the resistivity value and the surface wave velocity value have a good correspondence with the material composition of the barrier body.The high value of resistivity and surface wave velocity corresponds to the large diameter block stone enrichment area or bedrock,and the low value of resistivity and surface wave velocity corresponds to the small diameter block stone or loose material.At the same time,through experiments,it is considered that the application of high-density electrical method and natural source surface wave method in the barrier body is feasible.The data processing of high-density electrical method is simple and convenient,but the detection depth is shallow and there are many limiting factors.The data processing of natural source surface wave method is more complex and the detection depth is large.It can be applied to different lithologic barrier bodies and has wider applicability,which can provide a strong scientific basis for emergency disposal of barrier lakes.

关 键 词：堰塞体 高密度电法 天然源面波法 电阻率 结构特征 

分 类 号：P631[天文地球—地质矿产勘探] TV64[天文地球—地质学]