锚杆挡墙与锚喷结构在挖方边坡支护中的应用

Application of Anchor Retaining Wall and Anchor Spray Structure in Excavation Slope Support

川西高原藏区地形地貌错综复杂,地理空间资源有限。城镇化危旧房改造时,不可避免地会局部开挖向坡要地来拓展城市空间,改变城市面貌。随之产生的挖方边坡,尤其高开挖边坡,其支护安全显得至关重要。本文以川西高原雅江县城北旧城改造新建高边坡支护工程为例,论述了高开挖边坡实施的可行性,并结合岩土体条件,阐述了锚杆挡墙与锚喷组合结构方案在治理中具体应用,实践表明治理效果良好,可作为类似项目永久性高开挖边坡工程支护的参考。

The topography and geomorphology of Tibetan areas in the western Sichuan Plateau are complex,and the geographical space resources are limited.In the transformation of dangerous old houses in urbanization,it is inevitable to locally excavate the slopes to expand urban space and change urban appearance.For the excavation slope,especially the high excavation slope,its supporting safety is very important.In this paper,the feasibility of the implementation of high excavation slope is discussed by taking the new high slope support project in the north old city reconstruction of Yajiang County in the western Sichuan Plateau as an example.Combined with the geotechnical conditions,the specific application of the anchor retaining wall and the anchor-shotcrete composite structure scheme in the treatment is expounded.The practice shows that the treatment effect is good,which can be used as reference for the permanent high excavation slope engineering support of similar projects.