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一、基本情况猫跳河窄巷口水电站位于贵州高原岩溶强烈发育的地区。坝址所在的河谷为U型河谷。由于岩溶“天生桥”坍塌,堵塞河道,壅高水位,迥水至窄巷口之后,沉积了厚约30米的砂砾石层及黑色淤泥腐植层。坝址河段地层属二迭系(Ρ)灰岩及页岩。因逆掩断层(F_19)使寒武系(ε)白云岩超覆于二迭系(Ρ)地层之上。坝基为茅口灰岩(Ρ_1~3)及煤系页岩
First, the basic situation Cat jumping River narrow alley hydropower station is located in Guizhou plateau karst strongly developed areas. The valley where the dam is located is a U-shaped valley. Due to the collapse of the “Tianshengqiao” karst, clogging up the river channel, the high water level and the diversion of water to the narrow alley, a sand and gravel layer and a black silt humus layer about 30 meters thick were deposited. The dam site is a Permian (P) limestone and shale. The Cambrian (ε) dolomite overlies the Permian (P) formation due to the overthrust (F_19). Dam foundation Maokou limestone (P_1 ~ 3) and coal shale