Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (1): 192-200.doi: 10.13278/j.cnki.jjuese.20200065

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Impact of Subway Construction on Flow of Baiquan Spring Group in Jinan

Shu Longcang1,2, Wang Xiaobo1,2, Li Hu3, Ni Hanxi1,2, Li Gang3, Yu Yafei1,2, Wang Xin3, Zhang Manqi1,2   

  1. 1. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;
    2. College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China;
    3. Jinan Rail Transit Group Co., Ltd, Jinan 250014, China
  • Received:2020-03-20 Published:2021-02-02
  • Supported by:
    Supported by the National Natural Science Foundation of China (41172203,41572210) and the Major Innovation and Technology Projects of Shandong Province (2019JZZY020105)

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Abstract: In order to study the impact of subway construction on the Baiquan spring group (BSG) in Jinan, on the basis of the comprehensive analysis of the geological and hydrogeological conditions of Baiquan spring area, assuming the location and hydraulic properties of the karst water strong run-off belt in the study area, a numerical model of groundwater flow was established using FEFLOW software. Taking the planned subway Line M1 as the research object, the two construction scenarios of pumping and pumping with artificial recharge were analyzed in Jinan East Station, Liangwang Station, and Liangwang East Station. The impact on the flow of BSG in different construction scenarios was analyzed. The results show that the pumping alone of the subway station of Line M1 decreases the flow of the BSG. The simultaneous construction of the three stations has the greatest impact on the spring flow, and the maximum attenuation is 5.48%. When each of the three station is constructed separately, the Jinan East Station has a greatest impact on the spring flow. The spring flow rate is reduced by 0.043×104 m3/d compared to that without construction. Pumping construction with artificial recharge can effectively mitigate spring flow attenuation. The attenuation of spring flow during the construction of different stationsis reduced from 2.26%-5.48% during the construction of pumping alone to 0.08%-1.21% during the construction of pumping with artificial recharge. The strong run-off belts of karst water will form the preferential run-off of groundwater, promote the recharge of BSG, and alleviate the spring flow attenuation caused by subway construction to a certain extent.

Key words: Jinan Baiquan spring group, karst water strong run-off belts, numerical model, construction methods, springs flow

CLC Number: 

  • P641.8
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