排序方式: 共有32条查询结果,搜索用时 156 毫秒
11.
12.
13.
本文主要论述预测岩溶洞穴分布位置和高程的新方法。预测工作是通过对少量钻孔已知洞穴的分析,应用调和分析法进行的。 相似文献
14.
15.
16.
17.
贵州独山南部岩溶地下水系特征及水资源评价 总被引:3,自引:1,他引:2
黄后岩溶地下水系是发育在云贵高原向广西过渡的高原斜坡地带上的一条典型地下水系,它的形成和发育与该区的水文、气象、地质和地貌条件及其演化历史密切相关,反映出岩溶区地表水、地下水复杂的转变和演化关系,并参与了岩溶地貌的造貌作用。高原剥夷面上岩溶地下水比较丰富并具浅埋藏的特点,表明它与高原面同时形成的关系。目前,由于排泄基准面向上游的溯源侵蚀作用,使这种浅埋藏正在遭受破坏。在由溶蚀孔隙、裂隙、管道和溶洞组成的不均匀含水介质系统中,由枝状地下水系联结起来构成了具有良好水力联系的、有统一补给— 径流— 排泄的地下水系统,其主流和主要支流则发育成具有良好导水能力的快速排泄的地下河。 相似文献
18.
19.
Systematic determination of and adsorption experiment on fluorine in the carbonate rock-soil-water system in the karst region studied in Guzhou Province,in conjunction with the mineral surface and soil chemistry data,have revealed the geochemical characteristics of F and the mechanisms of its transport and entrichment in the rock-soil-water-system of the karst region central guizhou province,Deep-seated underground waters(-100m or lower)and soil layers in the karst region of central Guizhou are characterized by high-F anomalies whereas shallow-level underground and surface waters by low contents of F(mostly lower than 05mg/L).Fluorine in soil and water in the region studied comes largely from Triassic marine strata dominated by gypsum-bearing carbonate rocks.The special adsorption and desorption of F on the surface of geothite in soil layers are the important mechanisms of its transport and enrichment in the rock-soil-water system of the karst region studied. 相似文献
20.