高频滑坡边坡变形机理与破坏模式研究
Study on Slope Deformation Mechanism and Failure Mode for High Frequent Landslide
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摘要: 在露天煤矿的开采工作中,边坡滑坡是一种常见的灾害问题,尤其是高频率的滑坡对安全生产带来了巨大的影响。首先采用GPS监测手段对某露天矿采场、非工作帮及排土场进行监测,得出位移变化量和变化幅度在采场区最大,非工作帮次之,排土场最小,判断其滑坡模式为复合型圆弧滑动。然后应用FLAC3D 程序对该工程进行切应变速率、切应变增量、位移及速度矢量等计算,将计算结果与GPS监测结果对比分析表明2种方法的结果是统一的。Abstract: The slope landslide disaster is a common problem in mining work of open-pit coal mine, especially the high frequency of landslide has brought huge impact to safety production. First of all, the paper adopts GPS monitoring method to monitor a surface mine stope, non-working slope and dump, obtains that displacement variation and variation amplitude in the mining area is the largest, non-working help takes second place, and dump is minimal, and determines that its landslide model is composite circular sliding. Then, the paper used FLAC3D program to calculate shear-strain rate, shear strain increment, displacement and velocity vector of the engineering. The calculated results are compared with GPS monitoring results, and they shows that the results of the two methods are unified.
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Keywords:
- slope /
- landslide /
- deformation mechanism /
- dump /
- non-working slope
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