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贵州的地理环境在燕山运动后发生了巨大的变化,三叠系膏盐层的岩溶作用形成了独具特色的溶坍角砾岩、次生灰岩和假角砾岩。人类活动导致岩溶复活或岩溶作用方向的改变。岩溶发育在时空上具有迭加特征,随着岩溶作用过程的推移,同一地点水质类型的变化序次与随深度的变化序次相反。水库的防渗处理不当,使岩溶作用由化学作用为主转化为化学与物理作用并存,最终演变成以机械破坏为主。防渗处理应满足于对地下水比降、水交替循环条件等方面的要求。贵州火石坡水库的防渗处理为我们提供了一个典型的例证。
The geo-environment in Guizhou has undergone tremendous changes since the Yanshan movement. The karstification of the Triassic gypsum salt layer has resulted in the formation of unique slump breccias, secondary limestones and false breccias. Human activities lead to changes in direction of karstification or karstification. Karst development has superposition characteristics in time and space. As the process of karstification progresses, the order of the change of the water quality types in the same place changes in the opposite order with the change of the depth. Impervious treatment of reservoirs inappropriately changed the role of karstification from chemical reaction to chemical and physical interaction and finally evolved into mechanical failure. Anti-seepage treatment should be satisfied with the groundwater ratio, alternating water conditions and other requirements. Anti-seepage treatment of Huoshipo Reservoir in Guizhou provides a typical example for us.