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地下水封洞库作为近年来兴起的一种新型储油方式,其埋深的确定是工程需要重点考虑的问题,其直接影响工程质量、安全和造价。结合湛江地下水封石油洞库的工程实例,探讨了确定洞库埋深的一整套流程。首先根据水封条件和岩体质量对洞库顶面埋深进行初步确定,然后采用Flac3D计算软件对湛江地下水封石油洞库的库区进行分析,通过模型的建立和边界条件的利用,对全断面开挖的两组洞罐的围岩力学行为特征进行数值模拟研究,确定出较为合适的洞库埋深高程,最后从工程造价的角度对模拟埋深结果进行对比优化,从而确定出水封石油洞库的最优埋深。工程应用结果表明,该方法具有一定的实用性,可为今后其他类似工程提供参考。
As a new type of oil storage method that has emerged in recent years, the determination of its buried depth is a key issue to be considered in engineering. It has a direct impact on project quality, safety and cost. Combined with the engineering example of Zhanjiang underground water seal oil caverns, a set of process to determine the depth of caverns is discussed. Firstly, according to the water seal conditions and the rock mass quality, the depth of the top of the underground cavity is determined. Then, the software of Flac3D is used to analyze the reservoir area of the groundwater sealed petroleum cavity in Zhanjiang. Through the establishment of the model and the use of the boundary conditions, Section excavation of two groups of caverns of the mechanical behavior of the surrounding rock mechanics to conduct numerical simulation study to determine the appropriate depth of the caverns depth, and finally from the engineering point of view of the cost of simulation results were compared and optimized to determine the water seal oil The optimal depth of the cave The result of engineering application shows that the method has certain practicality and can provide references for other similar projects in the future.