RQDt optimal threshold t solving method based on three-dimensional laser scanning and RQD inversion

Abstract

The invention discloses an RQDt optimal threshold t solving method based on three-dimensional laser scanning and RQD inversion, and belongs to the field of RQDt optimal threshold t solving, and the method comprises the following steps: (1) quickly obtaining three-dimensional laser scanning of a structural plane; (2) drawing a structural surface pole diagram and an inclined rose diagram; (3) makingrock mass quality calculation based on RQD indexes; (4) generating and sectioning a rock mass three-dimensional fracture network model; (5) drawing an RQDt anisotropy diagram; and (6) arranging an optimal threshold t solving method based on RQD inversion. Three-dimensional laser scanning, an affinity propagation algorithm, an RQD theory, a fracture network model, a generalized RQD theory and inversion calculation are combined, the optimal threshold t of RQDt is solved, and the RQDt optimal threshold t solving method based on three-dimensional laser scanning and RQD inversion is provided. Themethod is clear, the obtained threshold t can reflect the real rock mass quality, and the method is suitable for solving the optimal threshold t of the rock mass RQDt.

Description

Technical field [0001] The present invention relates to a RQD based on three-dimensional laser scanning and RQD inversion. t The optimal threshold T solve method, especially the present invention based on three-dimensional laser scanning, nearest nearest nearest nearest propagation algorithm, RQD indicator, fracture network model, and generalized RQD theory, inversion calculates RQD t The range and optimal threshold T value of the best threshold T provide RQD based on three-dimensional laser scan and RQD inversion. t Optimal threshold T solving method, belongs to RQD t Optimal threshold T solution area. Background technique [0002] In nature, RQD is an important indicator of the mass quality of the character, and the RQD has an anisotropy. The anisotropy of the RQD can also be seen from the expansion of the calculation formula of the drilling RQD to the generalized RQD. Deer proposed the concept of drilling RQD in 1964. Since the drilling RQD exists in the application, there are...

AI Technical Summary

Problems solved by technology

Deer proposed the concept of borehole RQD in 1964. Due to the following two shortcomings in the application of borehole RQD: whether the threshold value of 100 mm is reasonable for different engineering scale rock masses; the drilling direction of the borehole is limited, and the obtained RQD can only reflect local rock mass conditions, but cannot reflect RQD anisotropy

The research on the optimal threshold t in these two aspects has certain limitations in the applicable conditions. It is a method of solving the optimal threshold t in a specific theory and background. When the background or model changes, the optimal The threshold t will no longer be optimal

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