黄金科学技术 ›› 2024, Vol. 32 ›› Issue (2): 290-305.doi: 10.11872/j.issn.1005-2518.2024.02.137
梅倩玮1,2(),陈刚1(),罗凤强3,马玲4,龚红胜1,龙妍竹1
Qianwei MEI1,2(),Gang CHEN1(),Fengqiang LUO3,Ling MA4,Hongsheng GONG1,Yanzhu LONG1
摘要:
为探究岩石裂隙粗糙面尺寸效应及方向性,对立方定律修正公式中表征天然岩石粗糙裂隙性质的粗糙度修正系数C进行分析。采用高精度3D扫描仪扫描天然岩石样品,得到其表面粗糙度数据,结合网络公开发布的高精度粗糙岩石裂隙CT扫描数据,生成空间坐标,采用公式法和数值法计算分析粗糙度修正系数C。根据公式法计算结果得出粗糙度具有尺寸效应;根据数值法结果得出粗糙度具有方向性,且粗糙度方向性可使用张量形式来表达。通过计算粗糙裂隙JRC值、表面及隙宽分形维数对研究结果进行印证,证明裂隙面粗糙度具有尺寸效应和各向异性。进一步研究发现:可采用粗糙度修正系数张量或粗糙度张量结合裂隙平均隙宽,形成单裂隙渗透张量,量化复杂粗糙裂隙网络中模型的粗糙面。
中图分类号:
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