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“品”字型抗滑桩防治方案用于治理锁儿头滑坡,为评价其治理效果,采用FLAC~(3D)软件进行数值模拟,对比分析采用“品”字型抗滑桩治理滑坡和不采取支挡措施时滑坡体的应力、位移的大小、变化情况。研究表明,采取抗滑桩支挡措施后滑坡整体位移减小,且对坡脚稳定的治理效果较佳;在10m平台以上坡体应力较为集中,在不利荷载情况下可能会发生局部滑塌,为增加安全储备,可采取挡土墙支挡措施处理;“品”字型抗滑桩挡土侧桩受力均匀,前排桩位移明显小于后排桩,为了使抗滑桩受力更加合理,在设计时可采取适当加大前后排桩间距或减小前排桩截面的方式优化。
In order to evaluate the treatment effect, the FLAC ~ (3D) software was used to carry out the numerical simulation. The contrastive analysis was made on the characters of anti-slide piles Landslide massif control and landslide body do not take measures to reduce the size of the displacement, changes. The results show that the overall displacement of the landslide decreases with the support of anti-slide piles and the stability of slope foot is better. Stress is more concentrated in the slope above the platform of 10m, and local slump may occur under unfavorable load. In order to increase the safety reserve, the retaining wall retaining measures can be taken; the “type” anti-slide pile retaining lateral pile is evenly loaded and the displacement of the front pile is obviously smaller than that of the rear row pile. In order to make the anti- More reasonable, the design can be taken to increase the spacing before and after the row of piles or reduce the front section of the pile section optimization.