洛阳市南部区地热地温场特征及影响因素研究

Study on Geothermal Geotemperature Field Features and Impacting Factor in Southern Luoyang City

研究区西部边界为龙潭沟断层(F5),东部边界至经周断层,南部边界至嵩山背斜分水岭,北部边界至伊河断层(F3)。该区地温场的平面特征是西部形成高温区,由此向东及东南方向地温和地温梯度值均表现为逐渐减低;垂向特征是随埋深加大地温升高,但热储层内垂向地温梯度值相对较低,而盖层垂向地温梯度值相对较高。影响区内地温场变化的主要因素为地质构造、地层岩性、水文地质条件、盖层厚度及深大活动断裂。通过对区内地温场特征的研究,必然对今后合理而科学地开发利用洛阳地热具有更好的指导意义。

The four boundaries of study area are Longtangou fault (F 5) on west, Jingzhou fault on east, Songshan anticline watershed on south and Yihe fault (F 3) on north. The area s geotemperature planar features have high temperature area on western part, from there to the east and southeast, geotemperature and geothermal gradient gradually decreasing;vertical features have geotemperature rising with depth deepening, but within geothermal reservoir, vertical geothermal gradient relatively lower, while in overburden relatively higher. Main factors impacting geotemperature field variation have geological structure, strata and lithology, hydrogeological condition, overburden thickness and discordogenic active fault. Through the study on geotemperature field features in the area, it is bound to be of greater guiding importance to reasonable and scientific exploitation and utilization of geothermal resources in Luoyang City.