山区地热资源勘查分析——以大段地-碾儿沟为例

Exploration of geothermal resources in mountainous areas——taking Nian-er-gou in Da-duan-di and as an example

以张家口市大段地-碾儿沟为例,开展了山地地热资源勘查分析.通过水文地质调查、大地电磁测深等手段,初步查明了侏罗系沉积地层与正长斑岩岩体接触带、断裂构造空间分布情况以及地下水赋存状况,分析评价了工作区地热资源基本赋存条件和水文地质特征,并推断了地热资源的可能赋存地段.

Taking Nian-er-gou and Da-duan-di and as an example, we investigated geothermal resources in mountain-ous areas. By means of hydro-geological survey and geophysical exploration （e.g. MT sounding）, we found the contact zone between the Jurassic sedimentary strata and the rock mass of orthophyre, the spatial distribution of the fault structure and oc-currence conditions of groundwater. Further more, the reserve conditions of geothermal resources and the hych-o-geologi-cal characteristics in working area were evaluated and the potential areas of lots of geothermal resources were infen＇ed.