| 天津市地热资源开发利用特征及存在问题分析 |
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| 引用本文： | 林溦,于彦,秦莉红,康楠.天津市地热资源开发利用特征及存在问题分析[J].地质找矿论丛,2016,31(4):592-599. |
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| 作者姓名： | 林溦 于彦 秦莉红 康楠 |
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| 作者单位： | 天津地热勘查开发设计院,天津,300250 |
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| 摘 要： | 天津地区的地热地质条件良好,蕴藏着丰富的地热资源。在地热资源的开发利用过程中,每年可产生可观的经济、社会和环境效益,但由于开发方式的不尽合理,带来诸多问题。文章阐述了天津开发利用地热资源的特征,分析了存在的问题。认为不同热储层间水力联系的存在和地热井间距的过小,造成开采层间相互影响较大;地热井布局不合理、开采层位相对集中、回灌程度不高导致局部热储层压力大幅度下降,持续的大幅度压力下降将引发吊泵和地面沉降;超标准排放地热尾水会造成资源浪费和热污染;采、灌井间距的过小和相对位置的不合理,存在冷突破风险。针对不同问题,给出了针对性解决问题的建议。
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| 关 键 词： | 地热 热储层 开采层 地热尾水 回灌程度 地面沉降 天津市 |
| 收稿时间： | 2016/4/27 0:00:00 |
Development and utilization characteristics and problem analysis of the geothermal resource in Tianjin |
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| LIN Wei,YU Yan,QIN Li-hong and KANG Nan.Development and utilization characteristics and problem analysis of the geothermal resource in Tianjin[J].Contributions to Geology and Mineral Resources Research,2016,31(4):592-599. |
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| Authors: | LIN Wei YU Yan QIN Li-hong and KANG Nan |
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| Institution: | Tianjin Geothermal Exploration and Development-designing Institute, Tianjin 300250, China;Tianjin Geothermal Exploration and Development-designing Institute, Tianjin 300250, China;Tianjin Geothermal Exploration and Development-designing Institute, Tianjin 300250, China;Tianjin Geothermal Exploration and Development-designing Institute, Tianjin 300250, China |
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| Abstract: | Tianjin is endowed with good geothermal condition and is abundant with the resources and considerable economic, social and environmental benefits have resulted from the geothermal production each year. However, unreasonable development method resulted in many problems. In the article, the author analyze the development and utilization situation and the existing problems and consider that hydraulic connection of different geothermal water layers and small interval between wells affect heavily the production. Unreasonable layout of wells, concentrated exploitation at some layers and low recharge rate have led to dramatic pressure drop of geothermal water layers and triggered pump lift and ground subsidence. Excessive disposal of geothermal water may probably cause the resource waste and heat pollution. Short distance of the exploitation well and recharge well and unreasonable layout of the wells will take risk of breakthrough of the recharged cold water into the geothermal layer. The counter measures are put forward. |
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| Keywords: | geothermal thermallayer exploitation layer tail water recharge rate ground subsidence Tianjin |
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