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岩体结构均质区划分是结构面统计与建模的基础。实践中以主控要素作指标、以最优划法为依据,更易获客观真实划分结果。针对国内核废料处置库北山预选区岩体结构面,开展了测窗范围截取、取样偏差及块网变异修正前处理,编程实现了多种方法下的均质区划分,初步探究各法在北山的判别力、适用性、局限性。结果表明:针对北山预选区而言,关联系数法和Mahtab法适用性较弱,Miller法最强;而Miller法中又以“34格大面积块”的划分效果最佳。将此最优划法应用至北山芨芨槽块段,希望能给结构面网络建模及后续渗流计算提供有益参考。
The division of rock mass homogeneity zone is the basis of statistical and modeling of structural plane. In practice, using the master control element as an index and based on the optimal method, it is easier to obtain objective and true results. According to the rock mass structural plane of the Beishan preselected area of the nuclear waste disposal repository in China, the detection window interception, sampling deviations and pre-processing of block net variation correction were carried out. The division of the homogeneous area under various methods was programmed. Discrimination, applicability, limitations. The results show that for the Beishan preselected area, the relevance coefficient method and the Mahtab method are weak, and the Miller method is the strongest. In the Miller method, the partition of the “34 large area block” is the best. Applying this optimal programming method to the Beishan block, it is hoped that it will provide a useful reference for modeling the surface network and subsequent seepage calculation.