渝湘高速公路某顺层滑坡渐进破坏机理及防治措施研究

Study on Progressive Destroy Mechanism and Protection Methods for Bedding Plane Landslide

研究目的:针对工程隐患较大且整治困难的长大顺层滑坡,深入分析其分段滑动破坏机理,并提出具体施工防治措施。研究结论:(1)该长大顺层滑坡的分段渐进性破坏是受应力条件,炭质泥岩软化特征的综合影响,其中炭质泥岩的易滑特征起主导作用,工程建设中应多加重视;(2)该类滑坡的整治措施,多以抗滑桩为主,但由于目前滑体变形错动较大,且施工工期紧张,实际治理以锚索框架+钢管桩的综合治理为主要方案,且效果较好。

Research purposes：Due to the might-be serious project risk and the difficult remediation of long and large bedding plane landslide,this paper analyzes the sublevel sliding destroy mechanism and proposes protection methods for concrete construction. Research conclusions：（1） The piecewise progressive destroy results from the combined effect of force condition and the soften characteristics of charcoal mudstone,with slippery characteristics playing a major impact;thus the charcoal mudstone should be paid special attention to in construction.（2） Anti-slide pile is considered as a major remediation towards such landslide,however,because of the landslide＇s deformation displacement and the limited time,it is better to use the AFSPP（Anchor Frame and Steel Pipe Piles） methods on landslide management.