曲靖马龙地区地热形成机制分析

Analysis of Geothermal Formation Mechanism in Malong Area of Qujing

根据马龙地区现场水文地质条件及周边地区地热地质条件调查,结合3口热水井资料,综合考虑地热资源开采利用、热储埋深、热储温度以及构造条件,从热源、地热水来源、热储层、热通道及盖层等方面分析马龙地区的地热形成机制,研究区地热系统是以震旦系灯影组(Z 2dn)白云岩地层为热储层的层状型地热。根据地热水化学资料,对远景区的水化学特征进行分析,对远景区的热储温度和冷热水混合比例进行估算。

According to the field hydrogeological conditions of Malong County and the geothermal geology conditions in its surrounding area,and the data of 3 geothermal wells,and considering the exploitation and utilization of geothermal resources,as well as buried depth,temperature and tectonic conditions of geothermal reservoir,this paper analyzes geothermal formation mechanism in Malong Area from the aspects of heat source,geothermal water source,geothermal reservoir,geothermal channel and cap rock.The geothermal system in the study area is a stratified geothermal system in which the dolomite stratum of Sinian Dengying Formation(Z 2dn)is the geothermal reservoir.According to the chemical data of geothermal water,this paper also analyzes the hydrochemical characteristics of the prospective area,and estimates the geothermal reservoir temperature and the mixing ratio of cold and hot water in the prospective area.