摘要
通过矿山滑坡地质灾害链特征研究,对勘查区内岩土的浸水状态与正常状态下的边坡稳定系数数值对比,总结出矿山滑坡地质灾害链特征为:多雨季节雨水长期冲击、河流积水、边坡大量开采等。本文通过对矿山滑坡地质灾害的成因特征进行分析,所得出的矿山滑坡地质灾害因素有以下几种:由于矿山施工,致使压力变大,进而出现土质松动现象,大面积危岩体脱离,极易出现脱落的现象,导致边坡失稳,在累积到一定程度时就会导致矿山滑坡的现象发生;由于矿山坡底积水,矿山下方岩体呈现竖直脱离趋势,裂缝逐年变宽,导致矿体逐步失稳;由于矿体滑坡推力过大,导致矿体出现弯矩现象,进而发生矿山滑坡地质灾害。
Through the research on the characteristics of mine landslide geological hazard chain,and comparing the value of slope stability coefficient between the soaking state of rock and soil in the exploration area and the normal state,the characteristics of mine landslide geological disaster chain are summarized as follows:long-term impact of rainwater in rainy season,water accumulation in rivers,large-scale slope mining,etc.In this paper,through the analysis of the causes of mine landslide geological disaster characteristics,the mine landslide geological disaster factors are as follows:due to the construction of the mine,the pressure is increased,and then the soil loosening phenomenon occurs.Large area of dangerous rock mass is separated,which is very easy to fall off,leading to slope instability.When accumulated to a certain extent,it will lead to mine landslide Due to the accumulation of water at the bottom of the mine slope,the rock mass below the mine presents a vertical separation trend,and the cracks become wider year by year,leading to the gradual instability of the ore body;due to the excessive thrust force of the ore body landslide,the bending moment phenomenon of the ore body occurs,and then the geological disaster of mine landslide occurs.
作者
高璐
GAO Lu(The First Institute of Geology and Mineral Exploration,Gansu Bureau of Geology and Mineral Exploration and Development,Tianshui 741020,China)
出处
《世界有色金属》
2020年第18期146-147,共2页
World Nonferrous Metals
关键词
矿山
滑坡
地质灾害链特征
发生因素
mine
landslide
geological hazard chain characteristics
occurrence factors
