【摘要】 贵州省长岗地下河系由主流和9条支流组成，被隔水边界封闭，结构完整，地下岩溶管道深切而狭窄，有跌水和深槽，地下水深埋，水力坡度大，动态极不稳定，是峰丛山区地下河的典型。地下河系内地表水与地下水统一于一体，水资源十分丰富，地下河出口水头落差大，具有良好的水力发电条件，修建地表水和地下水联合水库，使岩溶水得到充分利用。更多还原

【Abstract】 The subterranean river system in Changgang of Guizhou city is formed by a main stream and 9 branches, which are enclosed by an aquitard with complete structure. The karst channel is deep and narrow with drop and deep trough. Groundwater is buried deep with big hydraulic gradient and unsteady regime, which is a modol of subterranean river. In this system the surface water and ground water are united together forming resource of abundant water. With big drop height at the outlet it is a good place for hydroelectric power generation. Karst water may fully be utilized by building an united reservoir of surface water and groundwater there.更多还原