土工加筋对露天矿排土场边坡加固效果分析
Analysis of Reinforcement Effect of Geotextile Reinforcement on Slope of Open-pit Dump
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摘要: 针对加筋土挡墙在某露天矿排土场边坡的适用性,采用模型试验模拟了加筋对回填土边坡稳定性的作用机理,探讨了加筋土挡墙模型的失稳特性;进而对比分析了不同加筋方案对露天矿排土场边坡的加固效果以及不同工况条件下(持续降雨、地震、排水条件)边坡稳定性的状态。结果表明:适当加筋对不同条件下边坡的稳定性均有明显提高作用;第1级排土场边坡是滑坡防治的重点,适当的加密布筋可有效减小强降雨条件下边坡局部滑塌和整体失稳的危险,而土工筋带的嵌固作用可以较计算结果更大程度的提高坡体的抗震性能。Abstract: This paper adopts model test to examine the mechanism of reinforcement enhancing backfill-soil slope stability and explores the instability characteristics of reinforced soil retaining wall model for the reinforced soil retaining wall in the applicability of an open pit mine slope, and further compares and analyzes the reinforcement effect of the different reinforced schemes on the open pit dump slope and slope stability state in different working conditions (continuous rainfall, earthquakes, drainage conditions). The results showed that the slope stability was improved obviously by appropriate reinforcement under different conditions. The first level is the key of the slope prevention and control, proper added reinforcement can effectively decrease local slump and overall instability of the slope under the condition of heavy rainfall, and the effect of geotextile reinforcement embedded solid can increase seismic performance obviously compared with the results of computing.
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Keywords:
- slope stability /
- dump /
- reinforced earth retaining wall /
- reinforced geotextile /
- model test
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