The Characteristic Of Rock And Soil Thermo-physical Propetry In The Da Xing An Ling District And Study Of Cold Source Influence On Water Source Heat Pump

It is very significant that shallow geothermal energy resources is developed andutilized in the benefits of energy saving and environmental protection. At present，the wholecountry has to develop the use of shallow geothermal energy project，including Liaoning，Jilin，Heilongjiang，Neimenggu. For Daxinganling regions of our country，it does not havecorrelation study of the investigation of shallow geothermal energy and the characteristic ofrock and soil thermal properties since economy and natural conditions. With the support ofthe national natural science foundation project”water source heat pump underground THCBcoupled transport mechanism”(NO.40972172)，the paper studied the characteristic of rockand soil thermal properties and the influence of underground cold source to water sourceheat pump in the region through the indoor and field tests，at the same time with thepumping test and recharge tests acquiring accurate hydrogeological parameters.This paper studied the thermal properties of the rock and soil mass，and obtainedhydrogeological parameters，then compared with the indoor and field test results of Qing`ancounty，Heilongjiang province and Shenyang city，Liaoning province and analyze theirdifference. What is more，under the condition of the TOUGH simulating group wellspumping and irrigating system，the paper analyzed and studied problems in the actual watersource heat pump project，such as，heat breakthrough in the aquifer，wells interference，and so on. Finally，this thesis established a database. The paper studied from followingthree-part：The first part：the paper developed survey of shallow geothermal resources inDaxinganling Jiagedaqi region，and studied rock and soil thermal properties through theindoor thermal physical experiments and field thermal responsive tests，with the pumpingtest and recharge tests acquiring accurate hydrogeological parameters. At the same time，thepaper measured temperature of22investigation holes in the different locations and analyzedhorizontal and vertical temperature fields distribute conditions. Then，carrying on the indoorthermal physical experiments and field thermal responsive tests in Qing`an county，Heilongjiang province and Shenyang city，Liaoning province，this thesis researched thermalphysical properties of two regions and compared with it in Daxinganling.The second part：the paper analyzed experimental data and inclusion of the first part，then under the condition of the TOUGH simulating group wells pumping and irrigatingsystem，studied change of aquifer temperature fields through changing the size of thepumping capacity of the aquifer，the interval of pumping and irrigating wells in the different spatial orientation，different hydrogeological conditions and groundwater flow direction，specially for problems in the actual water source heat pump project，such as，heatbreakthrough in the aquifer，wells interference，and so on.The third part：the shallow geothermal database management system is a integrationand embodiment of the shallow geothermal survey. It has following merit：first，it canorganize a lot of data information systematically and realize structuring of data andinformation highly; Second, it can improve independence and sharing of data，reducingunnecessary data redundancy，saving storage space，and achieve sharing of data resourcesfully；Third，it can make data and information add，delete，modify and retrieve in a commonand controlled way，and service for a wide range of application. For the system mainlyfacilitates government decision-making departments to grasp of occurrence of shallowgeothermal energy resources rapidly and timely in the Jiagedaqi region and providesfoundation for planning，managing and guiding development and utilization of shallowgeothermal resources scientificaly and rationally，it faces the government persons ratherthan professional GIS researchers. Therefore，the system requires not only having a simple，good user interface，but also having a wealth of tips and user help function.Finally， the paper summarized research results and limitations， and proposedrecommendations on development and utilization of shallow geothermal resources.