A scanning device and method for depicting the surface morphology of large-scale structural surfaces in the field

Abstract

The invention relates to a scanning device and method for describing the surface form of a field large-scale structure surface. The scanning device includes a support structure, a guide rail structure and a laser scanning device; the support structure includes four independent brackets; a bearing frame, a telescopic type combination rod and a bottom rod are connected in sequence so as to form each bracket; the guide rail structure includes four cylindrical guide rails, two strip-shaped guide rails and a sliding base; positioning holes are formed in the cylindrical guide rails; the upper parts of the strip-shaped guide rails are provided with fine tooth chains; the lower parts of the strip-shaped guide rails are provided with slide wheel guide grooves; the laser scanning device comprises a laser distance measuring apparatus; the laser distance measuring apparatus is located in a sliding groove; the laser distance measuring apparatus is connected with a forward and reverse rotation motor through a chain; the forward and reverse rotation motor is used for driving the laser distance measuring apparatus to move back and forth along the sliding groove; and a driving motor is used for driving the laser scanning apparatus to move on the strip-shaped guide rails. With the scanning device and method of the invention adopted, the detailed data of the field large-scale structure surface can be scanned and recorded, and therefore, the surface form and the three-dimensional form of the structure surface can be reconstructed in a simulation manner, and more accurate parameters can be provided for rock mass excavation stability simulation and landslide stability simulation calculation.

Description

technical field [0001] The invention relates to the field of rock mechanics tests in civil engineering, in particular to a scanning device and method for depicting the surface morphology of large-scale structural surfaces in the field. Background technique [0002] With the massive construction of hydropower projects and road and bridge projects in our country, higher requirements are put forward for the stability of rock mass during construction and excavation; at the same time, there are also a large number of unstable slopes and banks in our country. For these unstable slopes and reservoirs Bank stability analysis is the core issue of slope engineering research. It is generally believed that the stability of engineering rock mass mainly depends on the development of structural weak planes in the rock mass. Therefore, in the stability research of various rock mass engineering, especially in the stability analysis of rock slopes, the shear strength of rock mass structural p...

AI Technical Summary

Problems solved by technology

[0008] The determination and measurement technology of the parameter JCS in the formula (2) are relatively mature and convenient, while the measurement of JRC is more complicated and difficult

This is because the rough and undulating characteristics of the structural surface are ever-changing, and it is difficult to accurately express it with simple mathematical relations

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