重庆地热水资源热储构造与径流补给

Geothermal reservoir structure and runoff flow recharge of geothermal water resources in Chongqing City

为了地热水资源的可持续开发,对重庆1 h经济圈内的地热水背斜地质构造、热储层状况、地热水补给进行了分析,并根据补给情况对各自背斜的建议开采量进行了计算.分析结果表明:在地质构造上,重庆地热资源可视为一个相对统一的整体,但各个背斜温泉之间又有其相对的独立性;下三叠统嘉陵江组、中二叠统茅口组、中上寒武统高台组和平井组是重庆地热水的主要热储层;从铜锣峡背斜、南温泉背斜地下热水的同位素氘(D,2H)和氧-18(18O)分布可以确定大气降雨是重庆地热水的主要补给源.

To ensure the sustainable exploitation of geothermal water resources,the anticline geological structure,geothermal reservoir status,and geothermal water recharge in a one-hour economic cycle in Chongqing City were analyzed.The allowable yield of geothermal water in each anticline was calculated according to the recharge condition.The results show that the total geothermal resources of Chongqing City can be regarded as uniform in geological structure,but every hot spring of the anticline is relative independent.The lower Triassic Jialingjiang Formation,Middle Permian Maokou Formation,and Gaotai Formation and Pingjing Formation of the Middle Cambrian are the major geothermal reservoirs,and the atmospheric precipitation provides the main recharge to Chongqing geothermal water according to the distributions of isotopes deuterium and oxygen-18 of geothermal water in the Tongluoxia and Nanwenquan anticlines.