西藏林周县水源地水文地质特征分析  

Hydrogeological Conditions of the Water Source Field in Lhünzhub,Tibet

作　　者：林光鑫 余正良 孙玉梅 LIN Guang-xin;Yü Zheng-liang;SUN Yu-mei(Sichuan Geological Engineering Investigation Institute,Chengdu610072;Chengdu University of Technology,Chengdu610059;Sichuan Garden Water Conservancy Engineering Co.,LTD.,Chengdu610072)

机构地区：[1]四川省地质工程勘察院,成都610072 [2]成都理工大学,成都610059 [3]四川合园水利工程有限公司,成都610072

出　　处：《四川地质学报》2017年第4期629-633,共5页Acta Geologica Sichuan

摘　　要：根据物探、水文地质钻探及水文地质试验,对林周县水源地水文地质特征进行了研究分析。结果表明:水源地含水层以第四系全新统冲洪积堆积物(Qhalp)为主,冲积砂砾卵石富水性好、渗透性好、具微承压、单井出水量1 000~3 000m3/d;冲洪积含泥砂砾石富水性较差、渗透性较差、单井出水量100~1 000m3/d。水源地地下水主要接受地表水及径流补给,于澎波曲下游排泄。水源地地下水属于Ⅱ类水,质量综合评价结果为良好-优良。地下水锶含量为0.34~0.44mg/L,偏硅酸含量也较高。初步判定地下水富锶与白垩系上统设兴组花岗岩侵入体有关。水源地可开采量为3 614.63 m^3/d,地下水储存量为4 311.00×10~4m^3。通过研究区域水文地质特征,分析林周盆地水源地水文地质特征,初步探讨地下水富锶的成因、分布及利用价值,对合理开发利用、保护地下水资源具有重要意义。The study of geophysical,hydrogeological and drilling data indicates that aquifer in the water source field in Lhünzhub,Tibet is composed of the Holocene pluvial accumulation(Qhalp).The pluvial sand and gravel accumulation is productive aquifer characterized by high permeability with single well water yield of1000-3000m3/d,while pluvial muddy sand and gravel accumulation characterized by low permeability with single well water yield of100-1000m3/d.Groundwater in the water source field belongs to typeⅡof good water quality with Sr content of0.34-0.44mg/L and higher metasilicate content which may be related to granite intrusion.The groundwater reserves are estimated at4311.00×104m3with a recoverable water of3614.63m3/d.

关 键 词：水源地水文地质特征 林周盆地 

分 类 号：P641.8[天文地球—地质矿产勘探]