本溪县汤池沟热田热储特征及资源量评价

汤池沟热田大地构造位置处于辽阳－本溪凹陷与凤城凸起的交接部位，属浅埋藏水热对流型热田。热储由中生代燕山期花岗斑岩、凝灰岩组成。热源为岩浆活动的余热。热流体主要靠侧向基岩裂隙水及断裂充水带的水补给，自北东向南西方向以脉状裂隙水运动为主，热流体直接受北东、北北东及北西向断裂控制。该热田储存有较丰富的地热资源，热能总量计算为 58.05 TJ，目前的热水开采量每年为 414 000 t,相当于消耗燃烧值为 29.3 MJ的标准煤每年 1 833.43 t，如果按此潜力开发，其开采年限预计可持续 80年以上。

HEAT RESERVOIR CHARACTERISTICS AND RESOURCES EVALUATION OF TANGCHIGOU HOT-WATER FIELD IN BENXI COUNTY

Tangchigou hot-water field locates at the joint between Liaoyang-Benxi depression and Fengcheng uplift,which belongs to shallow-burried hydrothermal convection-type hotewater field. Its heat reservoir is composed of Yanshanian granite-porphyry and tuff of Mesozoic.The heat resourced from the excess heat of magmatic activities.The thermal fluid mainly came from fissure water of lateral basement and the water of fault water belt, mainly with NE-SW direction movement of vein fissure water,and directly controlled by NE-,NNE-,and NW-strike faults.In the hot-water field,there is abundant geothermal resource with the total heat reserve 58.05TJ.At present,the annual hotwater exploitation amount is 414 000 t,corresponding to annual 1833.43 t of standard coal.With the expoitation scale,it is estamated that the hot-water field can be continually exploited more than 80 years.