基于数学统计法和对井功率法的北京市地热供暖潜力初探
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摘要
采用数学统计法和对井功率法两种地热供暖潜力的估算方法,分别计算北京市10个地热田的地热资源量,用来重新估算北京市地热能的供暖潜力。估算结果表明:在抽灌井间距为300 m的条件下,对井抽灌系统的热影响范围为36×10~4m~2,每平方公里热田范围内可容纳的地热井抽灌系统约2.78个;在地热水100%回灌条件下,采用对井抽灌方式,抽灌井间距为300 m时,利用统计法计算的北京市10个地热田(面积为2 760 km~2)的可供暖潜力为2.75×10~8m~2,利用对井功率法计算的北京市地热供暖潜力为3.01×10~8m~2;采用地热梯级利用,结合其他辅助清洁能源调峰方式,全市热田面积内可供暖面积为8.60×10~8m~2。采用对井系统供暖可大大提高布井密度,有助于推进北京甚至全国范围内地热供暖的发展。
This paper uses statistical and double wells power methods to estimate their geothermal resource of ten geothermal fields in Beijing and re-estimate their geothermal potential. The heat-influencing range of double pumpingfilling wells is 360 k square meters at their space of 300 m,which can hold 2. 28 double pumping-filling units per square kilometer. The available heating potential will be 275 million square meters by statistical method,in Beijing's ten geothermal fields under above conditions,and 301 million square meters by double wells power method. It could be up to 860 million square meters if geothermal graded using combined with other clean energy aids. Heating supply by using double wells system can increase well distribution density,helpful to promote the development of geothermal heating in Beijing,and in China.
This paper uses statistical and double wells power methods to estimate their geothermal resource of ten geothermal fields in Beijing and re-estimate their geothermal potential. The heat-influencing range of double pumpingfilling wells is 360 k square meters at their space of 300 m,which can hold 2. 28 double pumping-filling units per square kilometer. The available heating potential will be 275 million square meters by statistical method,in Beijing's ten geothermal fields under above conditions,and 301 million square meters by double wells power method. It could be up to 860 million square meters if geothermal graded using combined with other clean energy aids. Heating supply by using double wells system can increase well distribution density,helpful to promote the development of geothermal heating in Beijing,and in China.
引文
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[3]王贵玲.我国地热资源勘查评价战略研究[J].地热能,2010(6):15-20
[4]蔺文静,刘志明,王婉丽,等.中国地热资源及其潜力评估[J].中国地质,2013,40(1):312-321
[5]Zheng Keyan,Dong Ying,Chen Zihui,et al.Speeding up industrialized development of geothermal resources in China-country update report 2010—2014:proceedings World Geothermal Congress,Melbourne,Australia,19-25 April 2015[C]Melbourne:World Geothermal Congress,2015
[6]刘静,雷涯邻.北京市地热资源勘查开发现状及问题[J].资源与产业,2016,18(5):51-54
[7]北京市国土资源局.北京市地热资源可持续利用规划(2006—2020)[Z].北京:北京市国土资源局,2006
[8]Duan Zhongfeng,Pang Zhonghe,Wang Xinyi.Sustainability evaluation of limestone geothermal reservoirs with extended production histories in Beijing and Tianjin,China[J].Geothermics,2011,40(2):125-135
[9]孔彦龙.面向成本的热储开采模式优化研究:以雄县地热田为例[R].北京:中国科学院地质与地球物理研究所,2016
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