Analyses on Mechanism of Geothermal Resources Origin in Panshan Scenic Area of Tianjin

Abstract

Existing Geothermal knowledge is connected to areas of granite area. Panshan scenic area is made from granite. Geothermal exploration in Panshan scenic area of Tianjin cared out during 2007 to 2012. The paper will analyse the mechanism of geothermal formation, bury patterns and distribution of geothermal resources. It investigated by two geothermal exploration boreholes JDR1 and JDR2. The geothermal exploration result indicated that the granite are made in Triassic period and exposed on the surface. The internal pressure and the radioactive elements formed regional geothermal anomaly. The geologic faults control the rock permeability in the field. Groundwater is cycle through the deep faults that are made by many times tectonic movement. The heat can transfer by deep cycle to geothermal reservoir near the surface. The fracture zone is formed geothermal reservoir. The wells are thus usually completed with production coming from multiple feed zones.