降雨条件下某铁矿排土场边坡渗流场分布特征研究  

Study on features of seepage field's distribution in the waste accumulation slope in an iron mine on the condition of rain

作　　者：田阳辉[1] 汪海洋 

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056 [2]上海市政工程勘察设计有限公司,上海200092

出　　处：《工程勘察》2011年第9期51-55,共5页Geotechnical Investigation & Surveying

摘　　要：在饱和非饱和理论分析的基础上,针对山西某铁矿排土场,利用Geo-studio软件seep模块模拟了排土场降雨入渗过程,并对降雨条件下排土场地下水的渗流特征进行了详尽分析。矿区降雨量较少,沟谷发育,地表排泄通畅,径流快,同时排土料渗透系数大,难以储存地下水,边坡静态水位较低;排土料的渗透系数大于单位降雨量,降雨仅仅提高了排土料地基地层的饱和度和压力水头,降雨对排土料地下水渗流场影响不大,对第四系地层的渗流场影响较大。On the basis of analyzing saturation-unsaturation theory,about ore iron waste-dump in Shanxi,the paper simulates the rain infiltration process in waste-dump by seepage module of Geo-studio software.What＇s more,it analyzes the seep features of groundwater in waste-dump at length on the condition of rain.The main conclusions are as follows： the rainfall in mining area is little,while the number of cleugh is large.The surface of earth enjoys fast flow.Meanwhile,coefficient of permeability of waste rock is very big so that it is hard to store groundwater and as a result,the static water level of slope is low.Because the coefficient of permeability of waste rock is bigger than unit rainfall,rainfall makes little influence on groundwater seepage field of waste rock but large influence on seepage field of Quaternary.The rainfall only increases degree of saturation and pressure head of ground.

关 键 词：降雨 排土场边坡 渗流 饱和-非饱和 

分 类 号：P641.2[天文地球—地质矿产勘探]