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水封地下油库渗流场的分布是油库区地下水管理和油库运行方案的基本依据之一。为了解惠州水封地下油库区地下水在施工期和运行期的变化情况,应用三维非恒定流数值方法对复杂水文条件下的洞库区渗流场进行模拟,分析了不同初始地下水位条件对洞库区围岩渗流场的影响,探讨了施工期水幕系统不注水条件对油库运行的影响。研究表明:储油主洞开挖期间,水幕系统不注水将导致洞库围岩出现大范围的非饱和区,从而影响洞库多品种油品的储存。运行期水幕注水时的水封效果良好,洞库区围岩在进行灌浆处理后的涌水量较小。
The distribution of the seepage field of the water sealed underground depot is one of the basic grounds for the groundwater management and operation of the depot in the reservoir area. In order to understand the change of groundwater in Huizhou water sealed underground reservoir during construction and operation period, three-dimensional unsteady flow numerical method is used to simulate the seepage field in the reservoir area under complex hydrological conditions. The influence of different initial groundwater level conditions on the reservoir The influence of the seepage field in the surrounding rock area and the influence of the non-water injection conditions of the water curtain system on the operation of the oil depot during the construction period are discussed. The results show that during the excavation of the main reservoir, the water curtain system will not cause water to appear in a wide range of unsaturated zone in the surrounding rock, which will affect the storage of multi-species oil reservoir. The sealing effect of water curtain was good during operation period, and the influx of surrounding rock in the reservoir area was smaller after grouting treatment.