摘要
岩溶蓄水构造 (或岩溶含水构造 )是固结密实的岩溶含水层的组成部份 ,由于次生构造裂隙和溶蚀形态发育强烈 ,它们的透水性高于围岩 ,因而具备在含水层内汇聚和集中传输地下水的功能。新生代以来小平阳地区的岩溶作用在热带气候和新华夏系第二沉降带构造双重背景下发育。对这一地区归纳出 8种岩溶蓄水构造。体积上 ,它们只占含水层的 1%～ 10 %。通过岩溶水文地质调查找出蓄水构造可以把找水的靶区面积缩小 1～ 2个数量级 ,半定量地确定其三维几何形状和内部介质结构特征 ,可为水文物探解释提供地质依据。
Eight groups of water\|bearing structures for densely\|consolideted and karstified paleozoic carbonate rocks in a plain area of Central Guangxi are given, which were formed in secondary dissolution process along tectonic fractures and paleokarst formations in an evironment of subtropical climate and the second tectonic subsidence zone during Cenozoic era in Eastern China. The quantitative characterization of their 3\|dimensional geometry and void space texture may serve as geological basis for planning geophysical prospecting work and interpretation of its results. The structures occupy only 1%～10% of the volume of karst aquifers. Recognization of them by karstic hydrogeologic survey can reduce the target area by 1～2 orders of magnitute.
出处
《水文地质工程地质》
CAS
CSCD
2000年第6期1-5,共5页
Hydrogeology & Engineering Geology
基金
广西留学回国人员科学基金(桂科回9661010)
地矿部"八五"重点攻关课题(85-01-009-01-1)共同资助
关键词
岩溶
地下水
找水
广西
karst
groundwater
exploration
Guangxi
