热储法在重庆市大学城地热水资源评价的应用
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摘要
以沙坪坝区虎溪镇大学城地热水资源为研究对象,采用热储法计算其地热资源放热量。首先对区域内地形、地貌以及地热水形成条件进行综合分析,并通过对丰水期、平水期、枯水期3个水期进行(抽)放水试验,得到水力性质、出水量、水温、水位等指标。其次计算相关水文地质参数,确定枯水期最大降深放水时影响半径,最大允许开采量。并在此基础上建立热储概念模型,运用热储法进行评价,从而得出按使用期100年计算热储总放热量,折合成标准煤量以及共可减排CO2量。虎溪镇大学城地热水资源丰富,开采可达到良好的节能减排效果,热储法简便可行,对类似地区的地热资源量的计算具有指导意义。
In order to develop and utilize geothermal water resources more reasonably,accurate evaluation is the key and difficult point in the development and utilization of geothermal water resources.This paper takes the geothermal water resources in Huxi University Town of Shapingba District as the research object,and the thermal storage method is used to calculate the heat release of geothermal resources.The regional terrain,landform and formation condition of geothermal water are analyzed.Indexes,including hydraulic properties,water yield,temperature and water level are obtained by pumping and drainage test in different seasons.The calculation results of the relevant hydrogeological parameters show that the impact radius of the maximum drawdown in the dry season,and the maximum allowable mining capacity.By building the conceptual model of thermal storage,the stored heat calculation shows that total heat of thermal storage can release energy for converting into standard coal and reduce the exhaust of CO2 during the one-hundred-year serviceable life.It is obvious that the geothermal resources are very rich in Huxi University Town,the development and utilization of geothermal water resources play agood role in energy conservation and emission reduction,and the thermal energy storage method is simple and feasible,it provides a guidance for the calculation of the geothermal resource reserves in similar areas.
In order to develop and utilize geothermal water resources more reasonably,accurate evaluation is the key and difficult point in the development and utilization of geothermal water resources.This paper takes the geothermal water resources in Huxi University Town of Shapingba District as the research object,and the thermal storage method is used to calculate the heat release of geothermal resources.The regional terrain,landform and formation condition of geothermal water are analyzed.Indexes,including hydraulic properties,water yield,temperature and water level are obtained by pumping and drainage test in different seasons.The calculation results of the relevant hydrogeological parameters show that the impact radius of the maximum drawdown in the dry season,and the maximum allowable mining capacity.By building the conceptual model of thermal storage,the stored heat calculation shows that total heat of thermal storage can release energy for converting into standard coal and reduce the exhaust of CO2 during the one-hundred-year serviceable life.It is obvious that the geothermal resources are very rich in Huxi University Town,the development and utilization of geothermal water resources play agood role in energy conservation and emission reduction,and the thermal energy storage method is simple and feasible,it provides a guidance for the calculation of the geothermal resource reserves in similar areas.
引文
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[15]王治祥,温金梅,李德龙.热储法在地热资源评价中的应用——以重庆巴南区地热田为例[J].地下空间与工程学报,2015,11(S1):342~346.
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[17]李昌彦,王慧敏,佟金萍,等.气候变化下水资源适应性系统脆弱性评价——以鄱阳湖流域为例[J].长江流域资源与环境,2013,22(2):172~181.
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[2]Valgardur S.The renewability of geothermal energy[A].World Geothermal Congress.2000Proceedings of the World Geothermal Congress[C].Kyushu-Tohoku,Japan:World Geothermal Congress,2000.
[3]Nalla G,Shook G M.Engineered geothermal systems using advanced well technology[J].Geothermal Resources Council Trans,2004,12(3):117~123.
[4]Chicita K,Nishi M,Fukuyama R,et al.Hydrological and chemical budgets in a volcanic caldera lake:Lake Kussharo,Hokkaido,Japan[J].Journal of Hydrology,2004,291(1/2):91~114.
[5]程群,杨华林,曾敏.重庆市主城区岩溶地热水资源的形成与保护[J].中国岩溶,2015,34(3):217~227.
[6]GB/T11615-2010,地热资源地质勘查规范[S].
[7]罗祥康,曾云松,王治祥,等.重庆市地热资源勘查[J].重庆地矿信息,2006,1(1):22~25.
[8]罗祥康,陈思燕.重庆地热资源分布及开发利用现状[J].重庆地质矿产,2006,2(2):6~8.
[9]蒲俊兵,袁道先,蒋勇军.重庆市地下河的空间分布及水资源[J].水文地质工程地质,2009,36(2):34~38.
[10]孙亚乔,钱会,张黎,等.基于矩形图的天然水化学分类和水化学规律研究[J].地球科学与环境学报,2007,29(1):75~79.
[11]重庆市水文地质调查队.重庆市1∶5万区域水文地质报告[Z].重庆:重庆市地勘局南江水文地质工程地质队,2003.
[12]肖琼,沈立成,杨雷.地下热水的来源与补给机制分析——以重庆北温泉为例[J].重庆大学学报,2015,38(4):91~103.
[13]杨雷.重庆市温塘峡背斜地下热水水文地球化学特征研究[D].重庆:西南大学,2012.
[14]何铁柱.北京小汤山地热田地热资源量及地热水储存量计算与评价[J].研究评价,2012,7(4):20~23.
[15]王治祥,温金梅,李德龙.热储法在地热资源评价中的应用——以重庆巴南区地热田为例[J].地下空间与工程学报,2015,11(S1):342~346.
[16]杨华林,李明伦,刘邦星.模糊数学在岩溶储层地热资源勘探风险评价中的应用——以重庆山地型岩溶热储为例[J].中国岩溶,2013,32(4):384~390.
[17]李昌彦,王慧敏,佟金萍,等.气候变化下水资源适应性系统脆弱性评价——以鄱阳湖流域为例[J].长江流域资源与环境,2013,22(2):172~181.
[18]王继华.河南沉降盆地地热资源评价[J].长江大学学报(自科版),2010,7(2):178~204.