河南地热资源动态监测技术  

Dynamic Monitoring Technology for Geothermal Resources in Henan

作　　者：申云飞 程宇 卢玮 张晗 上官锐 田明磊 杨占伟 SHEN Yunfei;CHENG Yu;LU Wei;ZHANG Han;SHANGGUAN Rui;TIAN Minglei;YANG Zhanwei(Ecological Environment Geo-Service Center of Henan Geological Bureau,Zhengzhou,Henan 450053;Deep Prospecting Engineering Technology Research Center of Henan,Zhengzhou,Henan 450053;Henan Academy of Geology,Zhengzhou,Henan 450016)

机构地区：[1]河南省地质局生态环境地质服务中心,河南郑州450053 [2]河南省深部探矿工程技术研究中心,河南郑州450053 [3]河南省地质研究院,河南郑州450016

出　　处：《中国煤炭地质》2024年第12期28-33,共6页Coal Geology of China

基　　金：河南省自然资源科研项目([2021]157—3、[2020]542-1);河南省重点研发专项(231111320800);河南省软科学研究项目(242400410621)。

摘　　要：大规模的地热开发可能引起热储压力(水位)下降、热储温度降低、尾水外排污染等地质环境问题,地热监测是掌握动态变化规律,保障地热可持续开发的重要手段。在分析河南地热开发利用现状基础上,设计了基于WebGIS的地热资源监测平台,综合运用物联网、3S、移动互联、测控技术、WEB等技术,实现了地下热水水位、水温、采(灌)水量等参数的动态监测、数据分析、预警等功能,并以兰考县为例,通过调查对比,发现2023年与上年同期相比,供暖季期间出现地热井平均动水位埋深小幅度下降、回灌量衰减等现象。通过数值模型预测,以5a后规划地热水利用规模834万m3/a为条件,对比分析了90%回灌与0%回灌两种利用方式条件下水位漏斗变化情况,发现若在90%回灌率的开发方式下,地热水压力值衰减较小,漏斗区面积可控,地热资源开发利用可持续。Large scale geothermal development may cause geological environmental problems such as a decrease in thermal reservoir pressure,a decrease in thermal reservoir temperature,and pollution from tailwater discharge.Geothermal monitoring is an important means to grasp the dynamic changes and ensure sustainable geothermal development.Based on the analysis of the current situation of geothermal development and utilization in Henan,a geothermal resource monitoring platform based on WebGIS was designed.The platform comprehensively utilizes technologies such as the internet of things,3S,mobile internet,measurement and control,and WEB to achieve dynamic monitoring,data analysis,and early warning of parameters such as groundwater level,water temperature,and extraction(irrigation)water volume.Taking Lankao as an example,through investigation and comparison,it was found that during the heating season in 2023,there was a slight decrease in the average dynamic water level depth of geothermal wells and a decline in the recharge volume compared to the same period last year.Through numerical model prediction,with a planned geothermal water utilization scale of 8.34 million m3/a after 5 years as the condition,the changes in groundwater depression cones under two utilization modes of 90%and 0%recharge were compared and analyzed.It was found that under the development mode of 90%recharge rate,the attenuation of geothermal water pressure value is small,the cone area is controllable,and the development and utilization of geothermal resources are sustainable.

关 键 词：地热开发利用 动态变化 监测平台 河南 

分 类 号：TK521[动力工程及工程热物理—热能工程]