Evaluation Of The Geological Environment And Livability Of Yunnan Province Mark County Yuejiaping River Basin

The relationship between geological environment and human survival is close,and there is also a significant impact on development of human life and socio-economic because that the geological environment has the level of the pros and cons.The geological environment plays a more and more important role in the living environment of rural residents with the development of Chinese economic and the launching of the new rural construction in China. therefore, it is very meaningful and valuable of the evaluation of researching into geological environment of rural residence and livability of living environment.This article is based on "the geologecal disaster monitoring geological mapping technology in Daguan town in Yunnan province",and combination of the documents on the use of land resources in Yunnan Province Area for Integrated Mountain Development,which is released by the Yunnan Provincial Department.The research is based on actual Yuejiaping River Basin, by field investigations of geographic and geomorphic conditions,lithology,geological structure and hydrogeological conditions,and by analysing statistical and painting raw data in the room, using the analytic hierarchy process and fuzzy comprehensive evaluation method to evaluate the geological environment and livability of the Yuejiaping region. Discusing with relocation of Yuejiaping villagers, proposed measures for control of geological disasters is advanced.It can effectively consistent with existing policies and regulations to avoid the cross and the duplicate of the different departments of government approval。The main results are as follows:(1)The main geological disasters factors in Yuejiaping River Basin is landslide,which is mainly caused by natural factors and human factors.Natural factors:landslide is Quaternary loose deposits, slip plane contact surface of the soil and rock. There are mainly four aspects in formation conditions.First, due to river erosion and the erosion of the toe of the slope gradually steepening, stability becomes worse, landslides have overhead conditions; Second, the bedrock and overlying Quaternary loose deposits matter provides the material basis for the landslide cut; Third, land cultivation, loose soil and vegetation damage are conducive to the infiltration of rain water within the slope and the increasing of the slope weight, reducing the strength of the slip soils or slippery surface, prompting possibility of landslide; Finally, seismic force of the earthquake is changing into the glide force, bringing into the shock loose Quaternary, the formation of cracks, the groundwater and stormwater activities, which accelerate the landslide development.Human factors:human engineering activities such as housing construction, production activities, as well as deforestation, resulting in the landslide sliding force increased, the water for human consumption on the loose Quaternary deposits soil infiltration role, making the soil shear strength reduced, thus speeding up the landslide formation.(2)Drawing the quality assessment of geological conditions of Yuejiaping River Basin through fuzzy mathematical model law,we can devide the region into three parts:first area,the geological environment priority area. The area is mainly located in Longtang hamlet,Toupingzi hamlet and Kuangdangping hamlte areas,which is total3.48square kilometers, accounting for24.91%of the total area.There are gentle slope of the terrain,less vegetation growth and less human activities in this area;fracture and joint structure is not well developed.Second area,medium district of the geological environment, which is mainly in the peripheral region of the Yuejiaping and Zhaojiaping hamlte.This area is total6.41square kilometers, accounting for45.78%of the total area. The slope of the terrain is about10°,and the vegetation development is in general.The human engineering activities is mainly the cultivation of agricultural products,the fracture is not well developed, and there are two sets of joint development.Third area,geological environment poor area,mainly in the Yuejiaping and Zhaojiaping village.There are4.11square kilometers, accounting for29.31%of the total area; the slope of the terrain is due to the erosion of the watershed cutting,forming steep terrain;the village was built on a landslide,has strong human engineering activities.The geological disasters is landslides and debris flow development;the area rock crushing brings a lot of influence on the lives and productions of local residents.(3)By analysis of the environmental system factors in Yuejiaping River Basin, we can get a more in-depth understanding of the evolution shape of the living environment in small watershed areas.Based on the duality of our living environment, we can get that main factors of Yuejiaping River Basin Habitat environmental are geological environment, socio-economic, infrastructure, cultural practices and policy intervention factors, and other factors.(4) We can use analytic hierarchy to analyze of Yuejiaping River Basin Habitat spatial form.There are four selectd aspects including ecological environment, social environment, economic environment and human settlements,which is divided into19target layer to livability of Yuejiaping small watershed areas. We can get that the geological disasters is the key influencing factor of livability in Yuejiaping. Yuejiaping will be livable if the geological disasters are eliminated.(5)Think of Yuejiaping River Basin residents to move back, through the relocation costs to move into the spent21.6376million yuan,and relocation loss of10.4277million yuan, it is not necessary that the income is less than the cost of the relocation of the farmers. Therefore, the best choice of Yuejiaping River Basin residents is excluded geological disasters, and supported files on Landslide and debrised flow mainly to agriculture, forestry and animal husbandry measures, and proposed to optimize the Yue Jia Ping River Basin geological environment countermeasures.