【摘 要】
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With the background of rapid and digital construction of tunnel engineering,a method for obtaining the structural plane of tunnel rock mass based on SfM is proposed,which can be used to construct 3D s
【机 构】
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Shandong University
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With the background of rapid and digital construction of tunnel engineering,a method for obtaining the structural plane of tunnel rock mass based on SfM is proposed,which can be used to construct 3D surface model of tunnel rock mass rapidly,effectively and accurately,and to obtain characteristic parameters of structural planes.Based on this method,probabilistic model of the dip,dip angle,trace length and spacing of structural planes was determined and significance test of F value was carried out.A 3D stochastic network model of structural plane with Baecher disk model was established based on Monte Carlo principle.Through sectioning of the structural plane network model,the two-dimensional profile of trace distribution was generated and compared with that of actual excavated structural plane.As a result,the maximum difference ratio was 19.1%,which shows that this method can be adopted to identify the structural plane and obtain the characteristic parameter accurately and rapidly.The 3D stochastic network model of structural planes generated was highly reliable.
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