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现代地质 ›› 2021, Vol. 35 ›› Issue (03): 675-681.DOI: 10.19657/j.geoscience.1000-8527.2020.041

• 水资源与环境地质 • 上一篇    下一篇

山东柴汶河下游古近系朱家沟组含水岩组水文地质特征及地下水富集模式

李波1,2(), 吴璇1,2, 张翼飞1,2, 徐聪聪1,2, 刘春伟1,2, 关琴1,2, 罗斐1,2   

  1. 1.山东省地质矿产勘查开发局 八〇一水文地质工程地质大队,山东 济南 250014
    2.山东省地下水环境保护与修复工程技术研究中心,山东 济南 250014
  • 收稿日期:2019-04-21 修回日期:2020-06-15 出版日期:2021-06-23 发布日期:2021-06-24
  • 作者简介:李 波,男,硕士研究生,工程师,1988年出生,第四纪地质学专业,主要从事区域水文地质调查工作。Email: 710445277@qq.com
  • 基金资助:
    中国地质调查局水工环地质调查项目“沂蒙山革命老区1∶5万水文地质调查”(DD20160289);山东省自然资源厅项目“山东省1∶5万区域水文地质调查(新泰幅、新汶幅)”(鲁勘字(2018)44号)

Hydrogeological Features and Groundwater Enrichment Model of Paleogene Zhujiagou Formation in Lower Chaiwen River Valley, Shandong Province

LI Bo1,2(), WU Xuan1,2, ZHANG Yifei1,2, XU Congcong1,2, LIU Chunwei1,2, GUAN Qin1,2, LUO Fei1,2   

  1. 1. No.801 Hydrogeology and Engineering Geology Brigade of Shandong Exploration Bureau of Geology and Mineral Resources,Jinan, Shandong 250014,China
    2. Shandong Engineering Research Center for Environmental Protection and Remediation on Groundwater, Jinan,Shandong 250014,China
  • Received:2019-04-21 Revised:2020-06-15 Online:2021-06-23 Published:2021-06-24

摘要:

鲁中南地区古近系朱家沟组是一套具“磨拉石建造”特征的沉积地层,岩性以灰质角砾岩为主,受断裂构造影响,其富水性差异明显。在区域水文地质调查的基础之上,利用柴汶河下游古近系朱家沟组地层调查点与钻孔资料,分析其含水层特征、地下水水化学特征及富水性。结果表明:古近系朱家沟组含水层岩性为钙质胶结灰质砾岩,在90 m以浅裂隙岩溶发育,单井涌水量100~300 m3/d,局部>300 m3/d;裂隙水与汶口盆地南侧岩溶水化学特征相似,表明两者水力联系密切;Gibbs图显示区域地下水呈现岩石风化型,趋向蒸发浓缩型;地下水离子成分主要源于岩盐溶解,并受到人类污染活动影响。依据钻孔资料分析区内地下水富集模式为断裂型灰质砾岩岩溶裂隙蓄水构造模式,认为碎屑岩断裂发育段可作为应急找水靶区。

关键词: 柴汶河, 古近系朱家沟组, 水化学特征, 地下水富集模式

Abstract:

The Paleogene Zhujiagou Formation in south-central Shandong comprises a molassic sequence dominated by calcareous breccia, and has markedly varying water-yield properties caused by faults. Based on the regional hydrogeological survey in lower Chaiwen River valley, the aquifer characteristics, water-yield properties, and groundwater hydrochemical characteristics are analyzed. The results show that the Zhujiagou Formation comprises calcareous cemented calcirudite, and karst is developed above 90 m depth with single-well yield of 100-300 m3/d, locally reaching >300 m 3/d. Groundwater in the fissured or karst aquifers in the southern Wenkou Basin are similar, indicating close interactions between the two. The Gibbs map demonstrates that the groundwater hydrochemical features are dominated by rock-weathering, and evaporation and concentration. The ions in the groundwater are mainly sourced from rock dissolution and anthropogenic pollution. Based on drill-hole data analysis, the groundwater enrichment model is a fracture-type calcirudite karst-fissure water storage one, and we consider that fractured clastic rocks can be used as an emergency water exploration target.

Key words: Chaiwen River, Paleogene Zhujiagou Formation, hydrochemical characteristic, groundwater enrichment mode

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