Analysis on the development characteristics of geological hazards in Ganzhou Area
In order to study the development characteristics of geological hazards in Ganzhou area and understand the ge-netic relationship between geological hazards and rock mass,rainfall and artificial activities.Through collecting 1/50,000 ge-ological disaster risk survey results in Ganzhou city,the geotechnical types of geological disasters have been statistically ana-lyzed,and the typical disaster points are selected for analysis.The results show that:(1)the material composition of geolog-ical disasters is mainly soil mass,and the geotechnical mass is auxiliary;(2)Geological disasters mainly occur in the main flood season and typhoon affected period;(3)Geographically,it is mostly distributed in the mountainous and hilly areas where metamorphic rocks and granites are distributed,which is consistent with the rainfall area,and the sudden and mass oc-currence is strong.The main rock and soil types of geological disasters are mainly metamorphic rock construction(B),be-cause of its large distribution area,and the impact of tectonic movement,rock fragmentation,poor weathering resistance and so on.In addition,most of the geological disasters are related to unreasonable artificial slope cutting,and the concentrated heavy rainfall in flood season is the main natural factor inducing geological disasters.In the future,for the prevention and con-trol of these small geological disasters,it is suggested to mainly take simple engineering treatment,which has certain guiding significance for the selection of simple engineering treatment programs.
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