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石伟航,徐帮树,马秀媛,等. 砂卵石地层非稳定流回灌模型试验研究[J]. 科学技术与工程, 2020, 20(10): 4073-4079.
shiweihang,et al.Experimental Study on Unsteady Seepage Recharge Model of Sandy Cobble Stratum[J].Science Technology and Engineering,2020,20(10):4073-4079.
砂卵石地层非稳定流回灌模型试验研究
Experimental Study on Unsteady Seepage Recharge Model of Sandy Cobble Stratum
投稿时间:2019-07-13  修订日期:2019-11-01
DOI:
中文关键词:  砂卵石地层 回灌模型试验 非稳定流 数学模型 井损水头
英文关键词:sandy cobble stratum recharge model test unsteady flow water hump calculation well loss
基金项目:国家自然科学基金资助项目(50909056);山东省自然科学基金资助项目(ZR2014EEM029,ZR2014EEM014);住房城乡建设部 2015 年科学技术项目(2015-K5-004)
                 
作者单位
石伟航 山东大学 齐鲁交通学院
徐帮树 山东大学 齐鲁交通学院
马秀媛 山东大学 齐鲁交通学院
路林海 济南轨道交通集团有限公司
夏鹏 山东大学 齐鲁交通学院
李罡 济南轨道交通集团有限公司
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中文摘要:
      为研究砂卵石地层回灌渗流场水头时空分布规律,依托济南轨道交通R1线地下车站基坑工程,研制了回灌模型试验系统,分别进行了潜水层和承压水层单井回灌模型试验,建立了适用于砂卵石地层的非稳定渗流单井回灌数学模型。试验结果表明:(1)在承压水工况下,基于Theis非稳定流公式的计算数据和监测数据的水头变化趋势基本一致,皆为凸形曲线,但数值上存在明显的误差;(2)在潜水工况下,Theis公式只能描述其饱和渗流阶段的变化趋势,并不适用非饱和渗流阶段;(3)在定量回灌条件下,距离回灌井越近的地方越先达到饱和渗流;(4)回灌存在井损现象,井损水头占回灌水头的3.2%~52.5%左右。
英文摘要:
      In order to study the temporal and spatial distribution of the head of the seepage field in the sandy cobble stratum, relying on the foundation pit engineering of the underground station of the Jinan Rail Transit R1 line, a recharging model test system was developed, and the single well recharge model tests of the unconfined aquifer and the confined aquifer were carried out respectively. A mathematical model for unsteady seepage single well recharge for sandy cobble stratum was established. The test results show that: (1) Under the confined aquifer condition, the water head changing trend of the monitoring data and the calculation data which based on Theis' unsteady flow formula are basically same, all of which are convex curves, but there is obvious error in vaule. (2)Under the unconfined aquifer condition,the Theis formula can only describe the changing trend of the saturated seepage stage, and it is not applicable to the unsaturated seepage stage. (3) Under the quantitative recharge condition, the closer to the recharge well, the quicker to reach the saturated seepage. (4) The recharge has the well loss phenomenon, the head of the well loss accounts for 3.2%~52.5% of the recharge head.
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