顺层滑坡数值模拟与监测分析

 以长晋高速公路K31+160～K31+460段顺层滑坡为例，通过Geoslope软件数值模拟了该滑坡在初始设计状况下全断面开挖后无工程防护时的坡体状态，以及变更设计后工程防护对坡体的加固效果。同时运用监测等手段，对变更设计后坡体的适时状态进行监测分析，根据两者相互综合的反馈信息，为滑坡的“动态设计，信息化施工”提供依据，有效地指导设计及施工的进行。该滑坡成功治理的实践经验表明：(1) 对滑坡的治理不应只注重于单纯的支挡防护，而应根据滑体的实际地质情况，同时加强对滑体软弱夹层影响巨大的地下水疏排工程；(2) 反映坡体整体应力、应变的数值模拟与以坡体关键点为主的监测信息分析相结合的方法，为复杂滑坡的合理设计与成功治理提供一种新的思路。

NUMERICAL SIMULATION AND MONITORING ANALYSIS OF BEDDING LANDSLIDE

A typical example argillite bedding landslide at the K31+160–K31++460 of Changzhi to Jincheng highway is presented. By using numerical simulation software Geoslope，the states of slope under the full face excavation without engineering protection on the original design and the effectiveness of reinforced slope after design changed are simulated. The updating status of reinforced slopes after design changed is being monitored and analyzed. It provides the scientific basis for dynamic designing，information construction of landslide combing numerical simulation with monitoring analysis based on comprehensive updating recuperation. Finally the successful control practical experiences show：(1) controlling landslide does not only consider resistive engineering，but also enhance discharge underground water that influence the weak interlayer of landslide；(2) the method by controlling the landslide that combing the numerical simulation reflecting the integrality stress and strain with the monitoring information of several key points of the whole slope can propose a new method for complex landslides reasonable design and successful control.