基于变权欧式距离的地下洞室岩体质量评价

Evaluation of underground cavern rock mass quality based on variable weight Euclidean distance

通过对工程岩体分级标准适当地量化处理,得到新的相对等级距离标准,从而建立了新的岩体质量评价模型——变权欧式距离模型。应用该模型对岩体质量进行评价,能够准确地判断岩体的质量级别,同时能细化岩体处于岩体等级中的具体数值,为地下工程准确地判定岩体级别提了供参考。将变权欧式距离模型评价的结果与未确知测度理论模型和可拓方法评价的结果进行比较,基本一致,表明运用变权欧式距离模型对岩体质量进行评价有一定的合理性和科学适用性。

By dealing with the engineering rock mass classifica- tion standard appropriately and obtaining the new relative distance grade standard , a new rock mass quality evaluation model-variable weight model of the Euclidean distance is established. The model is used to evaluate the rock mass quality and can judge the level of rock mass quality accurately, at the same time, it can provide the concrete numerical value of the rock mass in the rock mass rating, which provides a reference for accurately determining level of rock mass in underground works. By comparing the results of the varia- ble weighted euclidean distance model with the results of unascer tained measure theory model and extension method, they are con- sistent basically, which indicates that using the variable weight eu- clidean distance model to evaluate the rock mass quality has a certain rationality and the scientific applicability.