利用高精度示踪技术和大功率充电法确定地下河系统的管道分布特征——以毛村地下河系统为例  

Utilizing high-precision tracer technology and high-powered mise-a-lamasse method to determine the pipeline distribution characteristics of underground river system:A case study in Maocun underground river system

作　　者：韩凯 梁东辉[3] 甘伏平 黄芬[2] HAN Kai;LIANG Donghui;GAN Fuping;HUANG Fen(MOE Key Laboratory of Exploration Technologies for Oil and Gas Resources,Yangtze University,Wuhan,Hubei 430100,China;Institute of Karst Geology,CAGS/Key Laboratory of Karst Dynamics,MNR&GZAR,Guilin,Guangxi 541004,China;Zhejiang Guangchuan Engineering Consulting Co.,Ltd.,Hangzhou,Zhejiang 310020,China)

机构地区：[1]长江大学油气资源与勘探技术教育部重点实验室,湖北武汉430100 [2]中国地质科学院岩溶地质研究所/自然资源部、广西岩溶动力学重点实验室,广西桂林541004 [3]浙江广川工程咨询有限公司,浙江杭州310020

出　　处：《中国岩溶》2021年第5期884-893,共10页Carsologica Sinica

基　　金：国家自然科学基金重点项目“漓江流域岩溶碳循环与水循环耦合机制及模型研究”(41530316);国家自然科学基金重点项目“水力压裂时域电磁监测方法研究与综合应用”(42030805);中国地质科学院基本科研业务费专项项目“岩溶区复杂含水层地下河管道探测综合技术研究”(YYWF201640)。

摘　　要：由于岩溶发育的非均一性和复杂性,确定岩溶地下河流域范围及地下河管道的位置是非常困难的。高精度示踪技术可用来确定地下河管道的连通性及地下河流域大致范围;大功率充电法能够准确定位岩溶地下河管道的平面分布特征并追踪地下河系统的管道展布方向。综合高精度示踪技术和大功率充电法等成果,并结合地下河的地表出露特征和钻探等信息进行验证,查明毛村地下河系统的地下河管网分布特征及大致流域范围,探测技术方法组合成效显著。主要成果体现:在毛村地下河系统上游,存在多个地下河管道分支,且还存在一个未被发现的地下河管道,连通各地下河分支;在地下河系统中游径流区,地下河主管道接受周围山体的补给并与次级管道、岩溶裂隙带形成复杂的地下河网状系统;在地下河系统下游排泄区,地下河管道分支呈扇形向排泄点聚集。另外,大功率充电法探测结果显示灯明泉可能是毛村地下河系统的一个分支,但是两者之间的连通性较差,在雨季或水位上涨时,两者之间的联通性可能会有所改善。Because of the heterogeneity and complexity of karst development,it is quite difficult to determine the watershed area of karst underground river basin and the location of underground river pipeline.High-precision tracer technology can be utilized to determine the connectivity of underground river pipeline and the rough watershed boundary of underground river basin.Besides,high-powered mise-a-la-masse method is able to accurately locate the planar distribution characteristics,and to track the spread direction of underground river pipeline.Based on the high-precision tracer technology and high-powered mise-a-la-masse method,the distribution characteristics of underground river network of Maocun underground river system and its approximate watershed boundary are obtained with the verification of outcrop characteristics of underground river and drilling data.The combination of these two methods has achieved remarkable resultsmainly reflected in the following aspects,in the upstream of Maocun underground river system,there exist multiple underground river pipeline branches and an undiscovered underground river pipeline,connecting each branch of underground river;in the midstream runoff area,the main pipeline of underground river receives supply of surrounding mountains and forms a complex underground river network with secondary pipelines and karst fissure zone;in the downstream discharge area,branches of underground river pipeline converge towards the discharge point in fan shape.In addition,the detection result of high-powered mise-a-la-masse method shows that Dengming Spring may be a branch of Maocun underground river system;however,the connectivity between them is poor and may be improved during the rainy season or when the water level rises.

关 键 词：毛村地下河 高精度示踪技术 大功率充电法 地下河流域 管道定位 

分 类 号：P631.8[天文地球—地质矿产勘探]