The Type Of Heat Storage And Its Formation Conditions Of The Main Fracture Zone In Yunnan

There are many kinds of geothermal resources in Yunnan.Predecessors have made great progress in the study of geothermal field,and the main results of the geothermal field in the fissured zone have been achieved.But there is not much analysis of the classification and formation conditions of the main geothermal field.In order to understand the basic characteristics and formation conditions of the main control type heat reservoir,alleviating the current people rational exploitation and utilization of geothermal resources,we carried out this study.This paper through collecting and sorting the previous survey data,analyses the heat source,heat storage,heat flow channel,chemical characteristics of water and cover conditions of fracture zone controlled type heat storage type geothermal system.Based on typical examples,this paper explores the formation conditions and characteristics of the geothermal reservoir system with the main control type of fracture zone,and establishes the corresponding conceptual model.The geothermal resources in Yunnan area is rich and various types,the early research of geothermal resources has made great progress,and the fractured zone controlled type reservoir also has a certain previous results.But the classification of fracture zone controlled type heat reservoir and analysis of formation condition is not much.In order to understand the basic characteristics and formation conditions of the main control type heat reservoir,alleviating the current people rational exploitation and utilization of geothermal resources,we carried out this study.This paper through collecting and sorting the previous survey data,analyses the heat source,heat storage,heat flow channel,chemical characteristics of water and cover conditions of fracture zone controlled type heat storage type geothermal system.Based on typical examples,this paper explores the formation conditions and characteristics of the geothermal reservoir system with the main control type of fracture zone,and establishes the corresponding conceptual model.Eight typical research points of the geothermal geological background are selected,and comprehensively analyses the geological structural conditions,chemical conditions of hot springs and other geothermal characteristics,and analyzes the causes of the typical examples of the research,and sets up the corresponding concept model.Layered reservoir fold fracture zone controlled type and buried layered geothermal reservoirs are past sequestration,degree of mineralization is generally higher,and will be exposed to the lower part of the axis of the folds.The sealing property of the exposed type and the main controlled thermal reservoir is poor,and the hydraulic contact with the meteoric water is strong,and the mineralization degree is relatively low.The geothermal system in the thermal zone of the zonal thermal reservoir is a zonal thermal reservoir,the degree of groundwater circulation is higher,more in the core of the vertical to the strong water rich strata,there is no obvious vertical aquifer,the spring flow is small,generally higher degree of mineralization.The genesis of the thermal zone in the fracture zone of the intrusive rock is similar to that of the layered thermal reservoir.