厦门海底抽水试验水文地质参数分析
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摘要
水文地质参数对海底隧道及道路、桥梁的设计、施工具有重要的指导作用,对施工的安全及建成后的运营成本控制有重要影响。根据厦门第二东通海底砂层的承压完整井抽水试验三个落程数据,绘制出相应的抽水试验曲线,得出抽水井和观测井的动水位及静水位和潮汐水位基本同步波动、略有滞后的规律。依据稳定流裘布依公式和非稳定流配线法分析厦门第二东通海底抽水试验数据,考虑到受海水潮汐影响,对其渗透系数和影响半径的求解方法进行分析和探索,并推广到具有观测井的承压完整井的海上抽水数据处理,可为类似工程实践提供参考。
Hydrogeological parameters are very important in the design and construction guide of subsea tunnel, road and bridge, significantly influencing the safety of construction as well as the operation cost control after the completion. According to the three-phase pumping tests on submarine sand layer confined well of the second east subsea tunnel in Xiamen, the corresponding pumping test curves are drawn,and the law that the dynamic and steady water level of the pumping well and the observation well synchronously fluctuate and lag slightly. The pumping test data of the second east subsea tunnel in Xiamen is analyzed with the stable well flow theory of Dupuit and the unsteady flow theory of fitting curve method, considering the tidal impact of the sea, permeability K and influence radius R are analyzed and explored, which are promoted to the application of the sea pumping data processing of confined well with observation well, providing a reference for similar engineer practices.
Hydrogeological parameters are very important in the design and construction guide of subsea tunnel, road and bridge, significantly influencing the safety of construction as well as the operation cost control after the completion. According to the three-phase pumping tests on submarine sand layer confined well of the second east subsea tunnel in Xiamen, the corresponding pumping test curves are drawn,and the law that the dynamic and steady water level of the pumping well and the observation well synchronously fluctuate and lag slightly. The pumping test data of the second east subsea tunnel in Xiamen is analyzed with the stable well flow theory of Dupuit and the unsteady flow theory of fitting curve method, considering the tidal impact of the sea, permeability K and influence radius R are analyzed and explored, which are promoted to the application of the sea pumping data processing of confined well with observation well, providing a reference for similar engineer practices.
引文
[1]马晨光.基于抽水试验的潜水含水层水文地质参数计算分析[D].西安:西安建筑科技大学,2011.
[2]李术才,赵岩,徐帮树,等.海底隧道涌水量数值计算的渗透系数确定方法[J].岩土力学,2012(5):1487-1512.
[3]徐杨青,刘国锋,吴西臣.武汉长江Ⅰ级阶地含水层水文地质参数研究及工程应用[J].岩土力学,2016(10):2915-2920.
[4]赵琳琳,肖长来,陈昌亮,等.基于抽水试验的多种方法确定水文地质参数[J].地下空间与工程学报,2015(2):306-309.
[5]王辛,张硕,叶疆.基于抽水试验的水文地质参数计算方法对比与探讨[J].资源环境与工程,2015(6):835-838
[6]徐超.厦门东通道海底隧道海域暗挖段水文地质试验及分析[J].铁道勘察,2007(4):55-59
[7]中交第二航务工程勘察设计院有限公司.厦门第二东通道工程工法研究地质勘察(海域部分)水文试验报告[R].2017.
[8] SL 320-2005水利水电工程钻孔抽水试验规程[S].2005.
[9]蒋辉.基于Aquifer Test的抽水试验参数计算方法分析[J].水文地质工程地质,2011(2):35-38.
[2]李术才,赵岩,徐帮树,等.海底隧道涌水量数值计算的渗透系数确定方法[J].岩土力学,2012(5):1487-1512.
[3]徐杨青,刘国锋,吴西臣.武汉长江Ⅰ级阶地含水层水文地质参数研究及工程应用[J].岩土力学,2016(10):2915-2920.
[4]赵琳琳,肖长来,陈昌亮,等.基于抽水试验的多种方法确定水文地质参数[J].地下空间与工程学报,2015(2):306-309.
[5]王辛,张硕,叶疆.基于抽水试验的水文地质参数计算方法对比与探讨[J].资源环境与工程,2015(6):835-838
[6]徐超.厦门东通道海底隧道海域暗挖段水文地质试验及分析[J].铁道勘察,2007(4):55-59
[7]中交第二航务工程勘察设计院有限公司.厦门第二东通道工程工法研究地质勘察(海域部分)水文试验报告[R].2017.
[8] SL 320-2005水利水电工程钻孔抽水试验规程[S].2005.
[9]蒋辉.基于Aquifer Test的抽水试验参数计算方法分析[J].水文地质工程地质,2011(2):35-38.