基于数学形态学的矿区大规模滑坡堆积体失稳概率仿真分析  

Simulation and analysis of instability probability of large-scale landslide accumulation in mining area based on mathematical morphology

作　　者：林富财 Lin Fucai(Xiamen Institute of Geological Engineering,Xiamen 361008,China)

机构地区：[1]厦门地质工程勘察院,福建厦门361008

出　　处：《能源与环保》2023年第1期134-140,共7页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

摘　　要：研究基于数学形态学的矿区大规模滑坡堆积体失稳概率仿真分析方法,为合理治理与预防堆积体滑坡事件提供科学依据。采集研究矿区大规模滑坡现场图像并绘制其堆积体剖面图,应用数学形态学提取出地形、骨架及边界等特征,通过ANSYS栅格生成堆积体失稳概率仿真计算模型,结合蒙特卡罗模拟法,仿真运算降雨因素影响下堆积体的失稳概率。结果表明,当降雨事件重现期增长时,滑坡堆积体的安全系数降低,其失稳概率升高;堆积体日失稳概率变化趋势与矿区的日降雨量趋势较为接近,失稳概率最高日与矿区实际发生堆积体滑坡事件的日期吻合,仿真分析结果可靠,可有效预防降雨导致的堆积体失稳灾害提供科学依据。The simulation analysis method of instability probability of large-scale landslide accumulation in mining area based on mathematical morphology is studied, which provides a scientific basis for reasonable treatment and prevention of accumulation landslide events.To collect and study the site image of large-scale landslide in the mining area and draw its accumulation profile, extract the terrain, skeleton, boundary and other characteristics using mathematical morphology, generate the accumulation instability probability simulation calculation model through the ANSYS grid, and combine the Monte Carlo simulation method to simulate and calculate the accumulation instability probability under the influence of rainfall factors.The results show that when the recurrence period of rainfall events increases, the safety factor of landslide accumulation decreases and the probability of instability increases.The change trend of the daily instability probability of the deposit is relatively close to the daily rainfall trend of the mining area.The highest probability of instability coincides with the actual occurrence date of the deposit landslide event in the mining area.The simulation analysis results are reliable and can provide scientific basis for effectively preventing the deposit instability disaster caused by rainfall.

关 键 词：数学形态学 矿区滑坡 堆积体失稳 关键特征提取 仿真计算模型 降雨因素 

分 类 号：P642[天文地球—工程地质学]