福州温泉区地热分布特征及其对地下工程影响分析
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摘要
本文分析了福州城区地形地貌、地质构造和区域热水流动规律,通过对位于温泉区内的福州地铁2号线水部站的地温测试表明,该车站范围内地温明显高于其它区域5～15℃,局部位置达20℃;且车站内地温存在两端高中间低、浅部高深部低、数据不连续等现象,分析原因与车站范围内的砂层和淤泥层多呈薄层状、透镜体状交错分布规律密切相关,也与区域上地下热水的补给、径流、排泄特点相关。根据查明的地热分布特征,局部区域存在较高的地下热水对地铁车站的空间布局、冷却通风设备功耗、防腐蚀措施和联络通道冷冻法施工构成较大的影响。本项研究成果对福州温泉区其它类似地下工程的建设具有一定指导意义。
In this paper,the geomorphology,geological structure and regional hot water flow law of Fuzhou urban area are analyzed. The geothermal test of the Shuibu station of Fuzhou Metro Line 2 in the hot spring area shows that the geothermal temperature in this station is obviously higher than that in other areas by 5 ～ 15℃,and some locations is up to 20℃. In addition,the temperature in the interior of the station is low between the two ends,high in the shallow part and deep part,and the data is discontinuous. The reason is closely related to the interlaced distribution of sand and mud layers in the station,and also to the characteristics of recharge,runoff and discharge of geothermal water in the area. According to the geothermal distribution characteristics,the existence of high geothermal water in some areas has a serious impact on the spatial layout of subway stations,the power consumption of cooling and ventilation equipment,anti-corrosion measures and the freezing construction of connecting passages. The research results have some guiding significance for the construction of other similar underground works in Fuzhou hot spring area.
In this paper,the geomorphology,geological structure and regional hot water flow law of Fuzhou urban area are analyzed. The geothermal test of the Shuibu station of Fuzhou Metro Line 2 in the hot spring area shows that the geothermal temperature in this station is obviously higher than that in other areas by 5 ～ 15℃,and some locations is up to 20℃. In addition,the temperature in the interior of the station is low between the two ends,high in the shallow part and deep part,and the data is discontinuous. The reason is closely related to the interlaced distribution of sand and mud layers in the station,and also to the characteristics of recharge,runoff and discharge of geothermal water in the area. According to the geothermal distribution characteristics,the existence of high geothermal water in some areas has a serious impact on the spatial layout of subway stations,the power consumption of cooling and ventilation equipment,anti-corrosion measures and the freezing construction of connecting passages. The research results have some guiding significance for the construction of other similar underground works in Fuzhou hot spring area.
引文
[1]郑志强.福州地铁规划建设中的水文地质环境问题分析[J].绿色科技. 2013(11):153-156.
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[4]福建省地质工程勘察院.福州市轨道交通建设及网络规划对温泉影响评估报告书[R]. 2018. 03:6-25.
[5]樊秀峰,吴振祥,简文彬.福州温泉区地下热水开采与水位动态响应研究[J].中国地质灾害与防治学报. 2004. 04(15):82-86.
[6]池永翔.福州温泉区地面沉降特点及影响因素分析[J].水文地质工程地质. 2009. 06:131-133.
[7]北京城建勘测设计研究院有限责任公司. GB50307-2012城市轨道交通岩土工程勘察规范[S].北京:中国计划出版社,2012.
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[2]福建省第二水文地质工程地质队.福州盆地水文地质勘探报告[R]. 1985. 9:10-25.
[3]赖树钦,王涛,卢晓华,等.福州盆地地热水微量元素特征[J].地质科技情报. 2008,27(2):80-84.
[4]福建省地质工程勘察院.福州市轨道交通建设及网络规划对温泉影响评估报告书[R]. 2018. 03:6-25.
[5]樊秀峰,吴振祥,简文彬.福州温泉区地下热水开采与水位动态响应研究[J].中国地质灾害与防治学报. 2004. 04(15):82-86.
[6]池永翔.福州温泉区地面沉降特点及影响因素分析[J].水文地质工程地质. 2009. 06:131-133.
[7]北京城建勘测设计研究院有限责任公司. GB50307-2012城市轨道交通岩土工程勘察规范[S].北京:中国计划出版社,2012.
[8]北京城建设计研究总院有限责任公司. GB50157-2013地铁设计规范[S].北京:中国建筑工业出版社,2014.