摘要
碳酸盐岩区岩溶发育规律对地下水资源的分布与利用具有重要意义。通过对广西布泉河流域进行1∶5万水文地质调查,探讨了本区岩溶地貌、发育规律和控制因素。结果为:流域内岩溶发育,地表岩溶个体形态类型多样,大的岩溶形态类型主要有洼地谷地、峰丛等,微岩溶形态类型主要有溶痕、溶沟、溶隙、石芽、天窗、溶洞等;地下岩溶钻孔遇洞率为42.1%,平均线岩溶率为1.6%。在4.1~45 m深度段为岩溶强发育带,45~65 m为岩溶中等发育带,65 m以下为岩溶弱发育带;岩溶发育受碳酸岩性、地质构造、地形地貌和水动力条件等多种因素共同控制。地下河多沿断层方向或岩层层面发育。
The karst development pattern plays a vital role in the distribution and utilization of groundwater resources in the carbonate zone. The karst landform, development pattern and control factors of Buquan river basin in Guangxi Zhuang Autonomous Region were studied by 1：50000 （centimeter） hydrological and geological survey. Karst is developed in this basin with various surface karst forms including depression, valley and peak cluster etc., and with multiple micro-karst morphological types such as solution trace, karren, solution fissure, clint, karst window, cave and so on. The rate of drilling hole encountering karst cave is 42.1% and the mean linear karst rate 1.6%. The depth interval with intensely developed karst is 4.1-45m.Karst is moderately developed within the depth interval of 45-65m and weakly developed below 65m. The development of karst was controlled by carbonate lithology, geological structure, topography and hydrodynamic conditions. The underground rivers developed along the fault directions or the strata levels.
出处
《广西水利水电》
2017年第6期1-5,共5页
Guangxi Water Resources & Hydropower Engineering
基金
中国地调局项目(12120115047401
12120114022101)
西江中下游岩溶峰林区1:5万水文地质ff环境地质调查(DD20160301)
关键词
地下水
岩溶地貌
岩溶发育规律
布泉河流域
Groundwater
karst landform
karst development pattern
Buquan river basin
