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制作与原岩结构面相似表面形态的模型试样是开展结构面力学模型试验的关键。基于不同尺度岩石结构面模型试样的制作特点,研制上、下盘完全吻合的系列尺度试样模具,并设计上、下盘吻合结构面试样的制作工艺,使得原岩结构面可以多次重复利用,提高原岩结构面的使用效率,降低取样成本和试验周期,实现在同一块结构面上不同尺度结构面模型的制作。利用表面形态相似性评价技术,验证制作工艺的可行性,结果表明,按照该逆向控制技术设计制作的模型试样,能复制出和原岩结构面表面形态一样、上、下盘结构面吻合度高的模型试样,符合制作不同尺度模型结构面的要求,可克服原岩结构面上下盘吻合度差、不能多种尺度取样的缺点,为开展具有真实表面形态的结构面抗剪强度尺寸效应试验研究提供了条件。
It is the key to develop the mechanical model test of structural plane to make the model sample with the similar surface morphology to the original rock structural plane. Based on the fabrication characteristics of the specimen with different scales and rock structural planes, a series of scale specimen molds with perfect matching of the upper and lower discs were developed and the fabrication process of upper and lower disc anastomosis structure specimens were designed so that the original rock structure surface could be made several times Reuse, improve the utilization efficiency of the original rock structure surface, reduce the sampling cost and the test period, and realize the fabrication of the surface structure model with different scales on the same structure surface. The surface morphology similarity evaluation technique was used to verify the feasibility of the fabrication process. The results show that the model samples designed and manufactured according to the reverse control technology can replicate the surface morphology of the original rock structure surface. The high model specimen meets the requirements of making structural plane of different scale models, which can overcome the shortcomings of poor consistency between the upper and lower plates of the original rock structure and can not sample in many scales. In order to carry out the dimensional effect of the shear strength of the structural plane with the real surface morphology Experimental research provided the conditions.