The Research Of Relationship Between Geological Hazards And Rock Types In Xingan County,Jiangxi Province

In this thesis,through the analysis of collected data,remote sensing interpretation,ground survey,engineering geological profile measurement,and explorations of important geological hazard(potential hazard)points,the geological environment conditions,such as lithologies,rock types and geological structures[1],are clarified.And the types of geological hazards and potential hazards in Xingan County,basic features,the relationship between geological hazard distribution and rock types,and formation conditions are analyzed.It is found that,the distribution of geological hazards is controlled by rock and soil types macroscopically.And the Loose rock,metamorphic rock,magmatic rock and red clastic rock are the main types of rock and soil to control geological hazards and potential hazards.Geological hazards are mainly located in the distribution areas of loose rocks,metamorphic rocks and magmatic rocks,accounting for 45.80%,23.02%and 17.75%,respectively.And the highest point density,in the loose soil area,is up to 0.56/km2.Through research,this thesis summarizes the stability analysis&evaluation methods of hazards and potential hazards in several typical type of geological areas,such as the loose rocks,metamorphic rocks,red clastic rocks,and so on,which is combining with the stability of conventional analysis method of the hazards such as mud-rock flow and ground collapse.The stability of 417 geological hazards and potential hazards registrated in the field survey are evaluated(considering the risk),and the stability level of that is divided.Finally,78 points,which are of poor stability and relatively high risk,have been selected as the key control objects of geological hazards in this county.These points are relatively concentrated in the general clastic rock area of the Lishan trafficway in the Taoxi Township,the metamorphic rock area of the Zaoshi trafficway in Qiqin Town,the metamorphic rock area of the Shangzhai trafficway in Maixie Town,the metamorphic rock area of the Yuanli trafficway in Tanqiu Township,and the high and steep slope sections formed by building houses in Jinchuan and Maixie Towns.There are many geological hazards and hidden danger points in Xinjan County,but the manpower and material resources for geological hazard prevention are limited.Thus,this research will be effectively helpful of solving this contradiction to the local.