一、泸漫段的主要工程地质问题成昆线泸沽至漫水湾段约长7公里,沿安宁河谷由北而南(图1)。此段安宁河两岸为多期岩浆侵入的花岗岩类岩层,风化较深。由于南北向的安宁河深大断裂的东盘逆冲,有多条与主断层平行的压性断裂,且由东向西掀升,西岸(右岸)山体破碎程度及坍方、滑坡、冲沟发育程度远逊于东岸(左岸)。西岸有犀角湾、漫水湾两个 I. Major Engineering Geological Problems of Lumen Section The Lugu-Manshuiwan section of Cheng-Kun Line stretches for about 7 kilometers along the Anning Valley from north to south (Figure 1). This section of the Anning River is a multi-stage magmatic intrusive granite rock formations, weathered deeper. Due to the north-south Anning River fault rupture at the east plate, there are several compressive faults parallel to the main faults, and the east-west lift, the fragmentation of the western bank (right bank) and the development of landslides, landslides and gully The extent is far less than the east coast (left bank). There are rhinoceros in the West Bank, Bay two