陡倾顺向边坡变形破坏机理及整治措施

Mechanism of Failure by Deformation of Consequent Slope with Steep Dip Angle and Its Improvement

该文主要叙述了工程中常遇到的顺向边坡,在不同的条件下,可能出现的崩塌、滑动和隆胀的破坏机理,以天生桥水电站厂房区边坡为例,滑动边坡的治理措施为选择开挖边坡坡度等于岩层倾角,这是既简单、稳定性又较高的办法。对隆胀破坏的整治措施是:清除滑塌体、系统锚固边坡表面、在坡面设排水系统、作深锚杆及对陡倾顺向单级高大的边坡坡脚做混凝土压脚挡墙。

This paper describes the mechanism of failure of consequent slope by collapse, slip and heaving under various conditions, taking the side slope in the area of powerhouse at Tianshengqiao Hydropower Station for example. Improvement measure for the sliding slope is to select the gradient of excavated slope equal to the dip angle of the rock statrum, which is a simpe solution with higher stability. For failure by heaving, improvement measures include removing the slip mass, anchoring systematically the surface of slope, setting up drainage system on the slope surface, driving in long anchorage bars and building concrete retaining wall at the toe of a single step consequent slope with steep dip angle.