Study About The Impact Of Water Heat Pump Recharging Technology On The Geological Structure

Energy and environmental protection is the main theme for human survival anddevelopment, which has been a global concern. As a renewable and efficient energy technology,heat pump has been widely used. Because of its relatively low cost, The water source heat pumptechnology is to promoting rapidly as a branch of heat pump. However, due to some work on thearea gets hydrogeological analysis, abstraction and simple recharge, it has caused irreversibledamage to effective utilization of groundwater resources and geological structures. To this end,this paper based on typical project cases in Wuhan, using numerical analysis software simulationmode to analyse its recharge techniques and explore the geological damage which caused bygroundwater pumping the working mechanism, in order to better water source heat pump workswell and guide the promotion and application.Thesis has focused to do the following aspects of work:(1)On the analysis of the basis hydrogeological conditions of a300,000square meterscomplex project in Wuhan, count to complete three steady drawdown flow pumping andrecharge tests, such as welling, pumping tests, trial recharging, water quality sampling, etc,forming a comprehensive pumping test results chart. Then analyse the level of geologicalparameters on the impact of the settlement amount, as well as to solve the problem about thesame layer to provide experimental basis for recharging information.(2)With Modflow software system well group numerical simulation analysis, taking theaquifer-15m~-47m geotechnical layer based on geological into three horizontal layers,comparing the system continues to run for24h,120h,216h,720h well group changes in waterflow field. Assuming in the case of incompressible water, and using the existing relevantformulas to derive the relationship between the unit elastic coefficient of water, deformationmodulus, multi-angle dynamic display of ground subsidence funnel water procession, thenjointing to do the analysis the urban groundwater drawdown and land subsidence.(3)Comparing the simulation and experimental results of the measured projections, basedon the typical projects, analyzing the various factors affecting recharge of groundwater andproposing effective optimization measures for recharging process (especially for Quaternarywater).back irrigation manner effective optimization measures.The conclusions has a certain reference value to methods of extraction and reinjection, andproviding some reference to the promotion and application of water source heat pump system.