麻栗坡县茅坪村搬迁场地边坡稳定性评价

Slope Stability Evaluation of Maoping Village Relocation Site in Malipo County

文章拟建场地属地质灾害避让搬迁项目,在场地建设整平过程中,形成8处不同程度的挖方及填方三级台阶地形,以及三级不稳定斜坡(X1、X2、X3)。根据边坡稳定性预测评价,坡高差异性大,岩性较复杂,坡体稳定程度不一,可能形成崩塌或滑坡等灾害,该建筑场地属于稳定性差的场地。通过场地边坡稳定性评价,拟建工程场区应先进行开挖回填边坡治理,治理过程为边坡分级开挖,坡脚设挡墙,基岩边坡设防护网加喷锚或框架格构,土质坡设框架格构,坡体设排水渠等。

The proposed site belongs to the geological disaster avoidance relocation project.In the process of site construction and leveling,eight three-level bench terrains with different degrees of excavation and filling,as well as three-level unstable slopes(X1,X2,X3)are formed.According to the forecasting evaluation of slope stability,the slope height is different,the lithology is more complex,and the slope stability is different,which may form disasters such as collapse or landslide.The construction site belongs to the site with poor stability.Through the stability evaluation of site slope,excavation and backfill slope treatment should be first carried out on the proposed engineering site.The treatment process involves slope grading excavation,setting up retaining wall at the foot of the slope,setting up protective net with spray anchor or frame lattice at the bedrock slope,setting up frame lattice at soil slope,setting up drainage canal at the slope body,etc.