某赤泥堆坝加固方案研究与施工过程仿真分析

Research of reinforcement plan for red mud dam and construction processes emulation analysis

某赤泥堆坝近几年出现严重裂缝与渗水、泄泥现象,坝体边坡基本处于临界稳定状态。在不利因素触发下,可能出现大面积滑坡。在充分研究堆场地质条件和堆坝的土层结构、裂缝现状与成因、变形过程与破坏趋势、稳定性等主要影响因素基础上,通过数值试验与模拟分析,提出了排水-改良滑带土-削坡减载-反压坡脚-加筋支挡-挂网喷射护坡的综合加固方案。通过加固施工过程仿真分析,验证了这种综合加固方案的科学性、合理性。

In recent years, the certain red mud dam appears cracking, water penetration and leakage of red mud. The side slope of dam body basically is on the critical stability state. When triggered by some disadvantageous factors, the dam may remain widespread landslide. Based on fully studying geological conditions and frameworks of soil layers in a heap of dam areas, existing condition and formation cause of cracking, deformation course and destructive trend and principal influencing factor of stability and with a plentiful numerical experimentation and simulation analyses, a full-scale plan for reinforcement including draining, improving soil property of slide zone, cutting slope for reducing load, pressing slope base inversely ,reinforced support and slope protection with suspension net by spouting, is put forward. The simulation analysis for reinforcement by construction course proves that the comprehensive plan is scientific and reasonable.