对我区近年来水电工程地质工作的回顾

GEOLOGIC WORK OF HYDROPOWER ENGINEERINGS INRETROSPECT IN RECENT YEARS IN OUR PREFECTURE

在山区狭谷河段，拱坝作为主要选择对象，要研究的主要问题是岩体风化、断裂构造、坝肩岩体抗滑稳定等；在河谷开阔地段，重力坝（闸坝）成为主要选择对象，要研究的主要问题除岩体风化、断裂构造外，还应着重查清覆盖层厚度，各类土体的组成，以及承载能力等发电引水隧洞主要注意进、出口及冲沟深切洞段的稳定。

Arch dam is the main selection at the gerge river reach of mountains region. Its main problems are rock decay, abruption structure and rock stabilization of dam abutments. The gravity dam is the main selection at wide river reach. The main problems are thickness of blanket, composition and bearing power of soil besides rock decay and abruption structure. The key of water tunnel is the stabilization of entrance, exit and gully tunnel reach. The key of factory building is the stabilization of mountains behind factory building.