Study On Genetic Mechanism Of Geohazards And Countermeasures For JiaYing County HongHe

The geology environment term is very complicated in the southwest mountains of china .The geo-hazard distributes extensive and the type is more.Among them the moving slope rock and soil disaster(collapes,landslide,mud-rock flow..etc ) is particululy prominent. A lot of examples make clear that the control function of geological structure and rock characteristics to the geo-hazard growing from the south west of YunNan province is obvious,therefore, the disaster usually has the chain-growthing characteristics together.This paper take the geo-hazard growing in the HongHe JiaYin county as an example ,based on collecting investigation , geological prospecting and some treatment measures.,clarified the disastrous and basic characteristic in each main type systematically with the geology environment background that take place, development, pass to the geology disaster present condition and the analysis, research of the growth characteristic, construct, rain from the geography term, geologic strata rock term, geology factor and artificial factor etc.This paper Defined the unsteady area coefficient( Ku) and the bad geology function density coefficient ( K_d) as fixed amount index sign,which used as the basis of distribution of geology environment conditions that leading disaster and the countermeasures to prevent the geo-hazard .in the mean time suggested geo— hazard treatment plan and scientific doing. Obtain if draw a conclusion:(1) The AiLao mountain cluster make from regional metamorphic rock ,gneiss ,which has deep weathering ,that unload the shallow slope. The rock type is fragment to spread —fragment construction soft rock "that the engineering function is close sand soil.(2) The main basic cause of geology disaster in JiaYin is landslide which is a geology disaster chain inside of the chain buttons up".(3) The inside break-structure of the rock( fault, joint) densely growing makes to break the rocky and complete, causing the mire turn the mezzanine , to produce collapse or slip.(4) Short time of strong decliner is one of the exterior factors that leads the landslide and mud-rock flow.(5) The human activity makes the important exterior factor that breaks the geology environment result in geo-hazard .(6)Based on geology environment , the place that the country government take can be divided the disaster term divide into three areas, that is weak-disaster area ,growing- disaster area and disaster area, stand for the general geology disaster and curing area, general prevention area and the main prevention areas.