基于裂隙渗流效应的水封油库涌水量预测分析

准确预测洞室涌水量和库区渗流场的空间分布特征是确保地下水封油库施工期安全性和运行期经济性的基础性工作之一。为真实地反映地下水封油库围岩随机分布裂隙的渗流效应对涌水量预测和渗流场空间分布特性的影响，提出了一种基于嵌入裂隙单元模型（EFE模型）的裂隙岩体渗流分析方法，并采用该方法对湛江水封油库的三维渗流场进行了计算分析，通过对比工程实测资料，验证了所提出方法的可靠性，进而预测了实例工程在运行期的涌水量。计算结果表明，EFE模型能够较好地模拟裂隙对洞室岩体局部渗流场的影响，反映库区渗流场及洞室涌水量空间分布不均匀的特性。研究成果可为水封洞库渗控措施的精准设计以及运行期污水处理设施配套设计工作提供参考。

Prediction of water inflow in water-sealed oil storage caverns based on fracture seepage effect

The accurate prediction on the spatial distribution of water inflow and seepage characteristics in the cavern is one of the basic tasks to ensure the safety and economy during construction and operation of the underground water-sealed oil cavern. In order to study the seepage effect of randomly distributed fractures in the surrounding rock of underground water-sealed oil storage cavern on water inflow prediction and spatial distribution of seepage field, a seepage analysis method of fractured rock mass based on embedded fracture element (EFE) is proposed to analyze the three-dimensional seepage field in Zhanjiang water-sealed oil storage caverns. The reliability of the proposed method is validated by the measured data and calculated results, and then the water inflow of the this project during the operation period is predicted. The calculation results show that the EFE model can well simulate the influence of fractures on the local seepage field of fractured rock mass, and reflect the non-uniformity of spatial distribution of the seepage field and water inflow in caverns. The research results can provide references for the precise design of seepage control measurements for water-sealed caverns and the design of sewage treatment facilities during the operation period.