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岩体的渗透系数是评价岩体渗透性,进行裂隙岩体渗流模拟的必备参数,在工程实际应用中亦具有重大意义。研究发现:岩体的完整性系数和基本质量指标(BQ值)的算术平均值与裂隙岩体透水率的几何平均值相关性较好,故利用岩体的完整性系数和基本质量指标(BQ值)的算术平均值估算裂隙岩体的渗透系数是可行的。根据金堆城杨家湾尾矿库初期坝的岩体压水试验结果,初步探索了岩体的基本质量指标及岩体完整性指数与其透水率的关系。
The permeability coefficient of rock mass is an essential parameter to evaluate the permeability of rock mass and simulate the seepage of fractured rock mass. It is also of great significance in engineering practice. The results show that the arithmetic average of the integrity coefficient and BQ value of rock mass has a good correlation with the geometric mean value of water permeability of fractured rock mass. Therefore, by using the integral coefficient of rock mass and the basic quality index (BQ Value) of the arithmetic mean of fractured rock mass permeability coefficient is feasible. According to the results of rock pressure test in the initial dam of Yangjiawan tailing dam in Jinduicheng, the basic quality indexes of rock mass and the relationship between rock mass integrity index and water permeability were preliminary explored.