Evaluation Of Geological And Ecological Environment Carrying Capacity For Geothermal Resources In Dazhou

Dazhou is located in the tectonic basin of Sichuan,which has a complex and diverse terrain.The north of Dazhou is a mountainous area with Dabashan fold belt.The southern part of Dazhou is a basin and hilly area,but there are several large anticlinals such as Huayingshan anticline,Zhongshan anticline and Eicheng mountain anticline.The complex geological structure is the main reason for the formation of geothermal resources in Dazho,but it also becomes the geological condition of geological disasters such as landslide and debris flow.And Mining has put pressure on the geological and ecological environment of Dazhou.Therefore,for Dazhou's mineral development,sustainable development is an essential development principle.The evaluation of geological and ecological environment carrying capacity of Dazhou can provide important basis for sustainable development.This paper evaluate the geological and ecological conditions of Dazhou by uses geography,geology,ecology,remote sensing and other data,geographic information systems and remote sensing technology as a technical means to extract topography,ecological environment and geological conditions and other aspects of information.Get the following conclusion.1)Dazhou is rich in geothermal resources,which is mainly distributed in the Huayingshan fault zone of the catchment of the western Sichuan and the foothills of the southern foot of the Daba Mountain in the Wanyuan,classified into sedimentary basin-type geothermal resources and uplift-type geothermal resources.But the overall development and utilization of geothermal resources is low,now only found 6 geothermal hot springs around Kaijiang,Dazhu,Dachuan,Tongchuan and Wanyuan.2)Collected multi-source data such as terrain and topographic data,meteorological data,geological data and remote sensing images in the study area,using GIS software to extract environmental information such as elevation,slope,NDVI,geological structure and make it as data layer.Based on the analysis of the geologic and ecological environment of Dazhou,the main geological and ecological problems of Dazhou and the relationship between geological disasters and geological structure are revealed.On this basis,the status quo of ecological geology environment is evaluated.3)Using the basic principle of geological ecology evaluation,learning from the previous experience in geological ecology rating,using the analytic hierarchy process todivide Dazhou geological ecology into topography,ecological environment and geological conditions etc.three subsystems,selecting the evaluation factor and its weight,establishing the evaluation model,the district quantitative evaluation for parts.The calculation results indicate that the maximum carrying capacity of Dazhou is 0.4045,the minimum value is 0.1479,the average is 0.2934.The result was that the area of poor geological and ecological environment of Dazhou was mainly for the geological and tectonic development and geological disasters in Dachuan area,good area for Wanyuan City and the nearby area,Xuanhan county and part of the region,Kaijiang County and western and Dazhu County in most areas.4)According to the distribution characteristics of the carrying capacity of the geological and ecological environment in Dazhou,the exploration and development of geothermal resources,and then add traffic,water,to the city distance and other factors,put forward geothermal resources development zone planning program,delineated 11 geothermal planning development zones,for the Dazhou geothermal development planning provides a reference.