戴家沟矿山泥石流内因分析与工程治理

戴家沟是一条潜在泥石流沟,流域面积约1.25×106m2,泥石流物源主要为矿渣,储量约1.2×106m3.利用X衍射光谱分析了黏土矿物试样;根据黏土矿物的结构及物理特征,从微观的角度分析了泥石流的形成原因.分析表明:黏土矿物具有巨大的表面积和亲水性,它的存在会促进泥石流的形成.在对泥石流物源岩土特性、泥石流流量、流速和...

Intrinsic Factor Analysis and Engineering Treatment of Daijiagou Mine Debris Flow

Daijiagou gully is a place of potential debris flow,with a flow-affected area of nearly 1.25×10~6m~2.The debris flow source mainly is slag which is about 1.2×10~6m~3.After site sampling and analyzing clay minerals with X-diffraction spectrum method.According to the structure and physical characteristics of clay mineral,the reasons which induced debris flow were analyzed from the microscopic point of view.The result shows that clay minerals which has immense surface and hydrophilicity could promote the formation of debris flow.Based on the analysis of source characteristics,discharge of debris flow,velocity and snatch force,gravity debris retaining dam and high-speed drainage structure were adopted to control the debris flow.