浅论安徽巢湖半汤地热田成因及径流通道问题  

On origin of Bantang geothermal field and its run-off passage in Chaohu area,Anhui

作　　者：刘飞[1] 汪龙虎[1] 洪江生[1] 

机构地区：[1]安徽省地质矿产勘查局327地质队,安徽合肥230011

出　　处：《地质学刊》2008年第3期172-178,共7页Journal of Geology

摘　　要：滁河断裂带总体走向北东40°,长约170km,宽5km,在断裂带内发育奥陶系—震旦系地层,该套碳酸盐岩受断裂构造影响,裂隙、岩溶发育,具备地下水渗透、径流、储存所需的空间条件。由于该断裂规模大,影响深,是地壳深部热源导控断裂,沿断裂带有温水、温热水温泉出露7处之多。巢湖市半汤地热田就是其中之一,地热田成因受北北东向F2、F3断层和滁河断裂带南缘巢湖—香泉断层(F1)的控制,由于地热田区裂隙、岩溶在不同标高段发育,地下水沿裂隙、岩溶径流亦有深浅之分,由于地下水径流循环深度不同,因而涌出地表的温泉温度也不尽相同。Chuhe fracture zone is 170km long and 5km wide, with a NE strike of 40°. Within the fracture zone, the Ordovician to Sinian strata were developed, effected by the fracture, fissures and karst were developed in this suite of carbonate rocks, and were provided with the spatial condition necessary for groundwater permeation, run-ff and storage. As the fracture was in a large scale, and the thermal source in the deep crust controlled the fracture, there occurred 7 sites of thermal spring outcrops along the fracture. And Bantang geothermal field in Chaohu was one of them. It is concluded that Bantang geothermal field was controlled by F2 and F3 fracture as well as Chaohu-Xiangquan fault （ F1 ） along the south margin of Chuhe fracture zone ; in the geothermal field, fissures and karst were developed at varied levels, so the groundwater depth varied accordingly along the fissures and karst ; as the groundwater run-off circulation depth varied, the spring temperature effused to the surface were different.

关 键 词：滁河断裂 热储 地热田 径流通道 安徽巢湖 

分 类 号：P314.2[天文地球—固体地球物理学]