西安安康线秦岭北麓的地质选线

GEOLOGICAL ROUTE SELECTION ON SI’AN-ANKANGRAIL-WAY ALONG THE NORTHERN FOOT OF QINLING MOUN-TAIN

西安安康线秦岭北麓Ｆ＿１断层为一条区域活动性大断层。该断层的性质、规模及其工程地质条件对秦岭北坡展线方案有着控制作用。作者参加了对Ｆ＿１断层的专题调查，获得了大量资料，本文在查清了Ｆ＿１断层的工程性质的基础上，总结了该断层带地质选线工作经验，着重指出了断层带工程地质分带在地质选线工作中的重要作用。

Along the Si’an-Ankang Railway Line,’the fault F_1 at the northern foot of the Qin-ling Mountain Range is a big fault with several regions having geological activities. Theproperty,scale and engineering geological conditions of this fault play a controlling role inthe railway developing schemes at the northern mountain slopes. The author participated ina special investigation of fault F_1,and a large amount of technical data were obtained.Basedon the thorough investigation of the engineering characteristics of fault F_1,the experiences ofthe geological route selection works in this fault zone are summarized,and the important roleof its engineering geological sub-zone is emphasized.