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在某大型地下洞室群工程的断面变形收敛监测过程中发现其时程曲线的波动程度有着明显的规律性,引入一维盒维数来定量描述该特征,在试算结果基础上探讨了其与围岩性质相关的力学含义。进而,通过采用该指标比较不同监测断面计算结果的差异,印证了盒维数与围岩完整性的对应关系。更进一步,分析各断面的空间位置及其盒维数值的关系,得出了整个区域内围岩完整性的演变规律。最终,由后继开挖过程揭露的围岩情况,证明整个推理过程和结论的有效性。
It is found that the degree of fluctuation of time history curve is obviously regular in the process of convergence monitoring of section deformation in a large underground cavern group project. The dimension of one-dimensional box is introduced to quantitatively describe the feature. Based on the tentative calculation results, Mechanical Meaning Related to Surrounding Rock Properties. Furthermore, by comparing the difference between the calculated results of different monitoring sections with this index, the corresponding relationship between the box dimension and the integrity of surrounding rock is confirmed. Further, the relationship between the spatial position of each section and the value of box dimension was analyzed, and the evolution law of the integrity of surrounding rock in the whole area was obtained. Finally, the surrounding rock conditions revealed by the subsequent excavation process prove the validity of the entire inference process and conclusion.