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在分析现有主要岩体渗透系数估算模型适宜性的基础上,根据地下水封洞库区岩体渗透性特征,依据烟台LPG洞库岩体渗透系数测试数据,以岩石质量指标(RQD)、岩体完整性指标(RID)、裂隙宽度指标(AD)、岩石渗透性指标(LPD)为建模指标,建立地下水封洞库岩体渗透系数估算模型——RMP模型,并采用该RMP模型估算青岛地下水封洞库区14个钻孔277段岩体的渗透系数。研究结果表明,青岛地下水封洞库岩体渗透系数空间分布随机性较大,其中57.04%的渗透系数集中于10-4 m/d≤K<10-3 m/d的区间内。研究成果对地下水封洞库工程的水幕系统设计和水封效果评价具有一定理论意义和工程参考价值。
On the basis of analyzing the suitability of the model for estimating the permeability coefficient of the existing main rock mass, according to the permeability characteristics of rock mass in the underground water sealed caverns reservoir area and based on the test data of the rock mass permeability coefficient of the LPG reservoir in Yantai, the rock mass index (RQD) Body integrity index (RID), fracture width index (AD) and rock permeability index (LPD) were used as modeling indexes to establish the RMP model, which is used to estimate the permeability coefficient of groundwater sealed cavern rock mass. The RMP model was used to estimate Qingdao Groundwater seal caverns reservoir 14 holes 277 rock mass permeability coefficient. The results show that the spatial distribution of permeability coefficient of groundwater sealed caverns in Qingdao is quite random. The permeability coefficient of 57.04% is concentrated in the interval of 10-4 m / d≤K <10-3 m / d. The research results have certain theoretical significance and engineering reference value for the design of water curtain system and the evaluation of water seal effect of groundwater caverns.