浅层地热能开发利用地质环境影响与监测系统建设研究

Study on Impact of the Development and Utilization of Shallow Geothermal Energy to Geological Environment and Monitoring System Construction

摘要:

浅层地热能的开发利用能取得的环境、社会和经济效益显著，已被社会广泛认可。但它的开发利用是通过热泵系统，从地质体中汲取地温资源与建筑物间进行能量交换，必然打破地质环境的自然生态平衡。该文分析了地源热泵工程对岩土体和地下水的温度、地下水水位、水质、微生物生存环境等产生的影响。介绍了地质环境监测系统建设内容，包括前端数据采集系统、数据传输系统和控制系统，重点介绍了地埋管和地下水2种不同换热方式热泵工程各自前端数据采集系统中地质环境监测点（孔）平面布置位置和数量、垂向上监测仪器的深度和间隔距离、主要的监测项目、监测精度、频率要求，以及利用监测数据可进行分析的内容等。

Abstract:

The development and utilization of shallow geothermal energy can achieve remarkable environmental, social and economic benefits, and have been widely recognized by the society. But it is realized by absorbing geothermal resources from the geological body through the heat pump system and carried out energy exchange with builidings. This process will inevitably break the natural ecological balance of geological environment. In this paper, the influence and the influence degree of ground source heat pump project on rock and soil and groundwater temperature, groundwater level, water quality and microbial environment have been analyzed. The construction contents of geological environment monitoring system have been introduced, including frontend data acquisition system, data transmission system and control system, focusing on introducing two different heat exchange forms as underground pipe and groundwater, plane location and quantity of geological environment monitoring poles in frontend data acquisition system in each heat pump project, the depth and interval distance of monitoring project vertically, main monitoring projects, accuracy precision and frequency requirements, and analysis which can be carried out by a series of monitoring data.