湘中溶蚀丘陵区示踪试验——以湖南新化为例  

TRACING TEST IN CORROSIONAL HILL AREA -A case study of Xinhua county,Hunan province

作　　者：裴建国[1] 谢运球[1] 章程[1] 翁金桃[1] 

机构地区：[1]中国地质科学院岩溶地质研究所,桂林541004

出　　处：《中国岩溶》2000年第4期366-371,共6页Carsologica Sinica

基　　金：国家计委专项项目"滇黔桂湘岩溶贫困区岩溶水有效开发建议与开发示范"第五课题部分成果;地质调查项目!DKD2 0 0 2 0 0 8;岩溶动力

摘　　要：二叠系茅口组灰岩以亮晶颗粒灰岩、泥晶颗粒灰岩和颗粒泥晶灰岩为骨架 ,裂隙溶洞为含水空间的介质类型 ,在以湘中为中心的溶蚀丘陵区普遍存在 ,湖南新化大树——华山一带具有典型代表性。两次示踪试验表明 ,雨季的岩溶水流速快 ,滞后时间和延续时间短 ,而旱季正好相反 ,这是茅口组灰岩岩溶发育和岩溶水特征的反映。近南北向展布的茅口组灰岩东西两侧完整的隔水边界和谷间地块分水岭的存在 ,使每个谷地都具有完整的补径排体系 ,从而形成多个小型岩溶水系统。如果在这些岩溶谷地中修坝建库 ,只要坝址座落于龙潭组砂岩之上 。The media type of Maokou Formation limestone,Permian system,which takes sparite grained limestone,micrite grained limestone,and grained micrite limestone as the framework,and fracture cave as water bearing space,is common in corrosional hill area around the center of Hunan province.The typical region is located along Dashu huashan village,Xinhua county.Two tracing tests indicated that karst water in rainy season has quick flow velocity with short lagging time and sustain time,but it goes the contrary in dry season.This feature responds well to the karst development and the characteristics of karst water.Owing to the existence of integral water resisting boundary and the intervalley masses of water divide,each valley has a recharge runoff discharge system of its own,thus forming many small scaled karst water systems.So if reservoirs are built in those karst valleys,and the dam sites are located on Longtan Formation sandstone,there will be no prolbem of karst leakage.

关 键 词：示踪试验 裂隙溶洞 氯化钠 钼酸铵 岩溶水 地下水 

分 类 号：P642.25[天文地球—工程地质学] P641.7[天文地球—地质矿产勘探]