Mechanism Of Geological Features Tengchong Hot Haiti Atsuta And Formation

Tengchong geothermal area of west Yunnan is an important part of the global high tropical with beautiful spectacular volcanic landforms, large-scale and strange geothermal. The natural ecology, geothermal tourism environment is a world-class level.In this case, research on Rehai geothermal not only enrich the theory of geothermal research achievements, but also for provide certain basis for thermal field and thermal resources development and utilization of the work.TThere will be great practical significance.Since late Paleozoic, Tengchong area is located at the edge of the active plate which created regional tectonic conditions for the modern tengchong volcanic geothermal landscape.On the basis of integration and summarization to previnus data and field geological survey, It is found that the relationship of geothermal distribution with landform visage, lithofogy, geological structure, magmatic activity, earthquake and other geological factors, especially controlled by geofogical structure.The exposure of geothermal display usually located in the area of structural belt and its influence.The main geological structure of Rehai is fracture, and the north-south fracture is the main, the north wes and north east fracture is the second fault. These faults not only extends far but deep cutting, are usually break the glutenite of Tertiary Nanlin formation overlying the upper, into Proterozoic Gaoligongshan formation, and some even cut through the entire Gaoligongshan formation. These faults structure Make the surrounding rock fracture, hydraulic conductivity and water content increase. In the Huangguajing-liuhuangtang area of Rehai,The main Geothermal channel are F4, F5, F6and F7, F38fault, etc. F2、F4、F33、F3、F40fault, etc In Reshuitang.The major hydrochemical types of the thermal groundwater in the area mainly includes seven:Cl-Na、Cl·HCO3-Na (including Cl·CO3-Na)、HCO3·Cl-Na、 SO4-Na、SO4·Cl-Na、HCO3-Na、HCO3-Ca. The part of HCO3·Cl-Na、Cl·HCO3-Na is is given priority to, accounting for39%and25%respectively. SO4-Na and HCO3-Na type accounted for11%, other2.8%. This paper combined water distribution, hydrochemical and isotope characteristics of gas to Calculate the geothermal reservoir characteristics under Fracture control.It is found that the three different shades of geothermal reservoir in the study area is controlled by three sets of fault zone.Geothermal reservoir of Rehai can be divided into three types, including vein thermal storage, banded thermal reservoir and lamellar thermal reservoir. The rock mass is mainly bound metamorphic of gaoligongshan, granite of cretaceous and glutenite of Tertiary Nanlin.Integrated the characteristics of the elements of geothermal systems, Geothermal formation model is set up.This provides a new scientific basis for the development and utilization of geothermal resources.