广元市示范性综合实践基地滑坡特征及防治

Landslide Features, Prevention and Control at Demonstration Comprehensive Practice Base in Guangyuan City

由于场地坡脚开挖,在暴雨影响下,广元市示范性综合实践基地发生牵引式滑坡。通过现场勘查,根据研究区斜坡滑坡情况及斜坡坡向不同的特点,研究区分为滑坡区、斜坡I区及斜坡II区;经地质分析及计算后,对滑坡及斜坡区稳定性进行了评价。针对场地北侧滑坡区、斜坡I区采用桩板墙进行支护,场地西侧斜坡II区采用护脚墙、格构进行支护,于坡脚、坡顶适当部位设置截排水沟。

A retrogressive landslide occurred at the Demonstration Comprehensive Practice Base in Guangyuan City due to slope toe excavation and rainstorm. According to the landslide characteristics and slope direction obtained through on-site investigation, the area under study is divided into landslide area, slope area I and slope area II. The stability of landslide and slope areas was evaluated based on geological analysis and calculation. In that consideration, sheet pile walls are taken for the landslide area and slope area I on the north side of the site;slope protection spats and lattice beams for slope area II on the west;and, proper intercepting and drainage ditches on the foot and top of the slope.