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在广泛收集地质资料的基础上,深入分析了可溶岩间隙性岩溶高压地下水的成因、补给、径流、排泄特征及对高速铁路隧道安全运营的影响,为隧道岩溶水的治理提供了理论依据。通过运营检验及安全、可靠的工程措施,在那吉隧道地下水病害的整治过程中认为有以下经验值得注意:(1)可溶岩隧道在勘测阶段,重点要查明该隧道的区域地质和区域水文地质情况,分清岩溶地下水的循环带,用多种方法预估地下水的总水量。(2)隧道施工中如果发现溶洞,须仔细判别其是否为过水通道,采取相应措施处理。(3)岩溶隧道,地下水的运动形态非常复杂,水量动态范围变化极大,在勘察、设计、施工和运营中都应该高度重视,尽量避免其风险。
On the basis of extensive collection of geological data, the causes of formation, recharge, runoff and discharge of groundwater with high karst pressure in soluble lava and their impact on the safe operation of high-speed railway tunnel are analyzed in depth. This provides a theoretical basis for the treatment of tunnel karst water. Through operational inspections and safe and reliable engineering measures, it is considered that the following experiences are worthy of note during the remediation of Nakji Tunnel groundwater disease: (1) In the survey stage of the soluble rock tunnel, it is important to identify the regional geology and regional hydrology of the tunnel Geological conditions, distinguish karst groundwater circulation zone, using a variety of methods to estimate the total amount of groundwater. (2) If any cave is found in the construction of the tunnel, it shall be carefully judged whether it is a passageway for passing water and the corresponding measures shall be taken. (3) In karst tunnels, the movement patterns of groundwater are very complicated and the dynamic range of water volume varies greatly. Therefore, they should be highly valued in survey, design, construction and operation, and their risks should be avoided as much as possible.