Rock mass structure detection and dangerous rock detection system and method

Abstract

The invention provides a rock mass structure detection and dangerous rock detection system and method. The rock mass structure detection and dangerous rock detection system comprises rock mass structure automatic detection equipment, and three-dimensional laser scanning equipment and two-dimensional image acquisition equipment are arranged on the rock mass structure automatic detection equipment and used for acquiring three-dimensional laser point cloud data and two-dimensional images of a tunnel construction area respectively. A server communicates with the rock mass structure automatic detection equipment; the server comprises a block structure three-dimensional modeling module and a block structure geometric stability analysis module. The influence of the same group of structural planesin the rock mass, the new structural plane effect of blasting disturbance and the finite scale of the structural planes are considered, and polygonal pyramids and polygonal frustum-shaped blocks canbe constructed to be close to engineering practice; and the geometric stability of any polygonal pyramid can be rapidly analyzed.

Description

technical field [0001] The invention belongs to the field of rock mass detection, in particular to a system and method for rock mass structure detection and dangerous rock detection. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The exploration of rock mass structure is the basic work of geological disaster prediction and early warning in tunnel and underground engineering, and has important guiding significance in underground engineering construction. According to the collected high-precision rock mass structure information, geological cataloging and risk assessment are carried out, and rock mass structural plane extension prediction is carried out through the three-dimensional structure information of rock mass, so as to predict the occurrence of dangerous blocks and analyze the stability of dangerous blocks. Provide some guidance on ...

AI Technical Summary

Problems solved by technology

[0005] 1) The acquisition of rock mass structure information has problems such as low accuracy, weak adaptability, cumbersome operation, and difficulty in handling supporting equipment; the accuracy of data acquisition is restricted by the professional level and technical literacy of operators, and cannot be popularized on a large scale;

[0006] 2) Faced with the environment of high dust concentration and uneven lighting conditions in tunnels and underground projects, the existing non-contact collection methods cannot be applied normally; currently, after the data collection is completed, it is necessary to return to the studio for analysis, and when the analysis results are obtained, construction is often carried out It has entered the next cycle, and cannot form an effective guiding significance for construction; at present, personnel are required to carry equipment and collect data under the dangerous area for a long time, and rockfall occurs from time to time, which seriously threatens the safety of life and property; in tunnels and underground projects, dust, Methane gas, radioactive gas, etc. have a great impact on the health of personnel; the measurement range of existing contact methods is only in a small part of the range that personnel can touch;

[0007] 3) The traditional rock mass structure method can only identify rock cracks in two-dimensional images, without considering the combination of three-dimensional point cloud data and panoramic image data and the relationship between structural surface diameter and structural surface trace length, and the default structural surface wireless extension; and Affected by the light at the construction site, the shadows produced by rock protrusions have a greater impact on automatic recognition, resulting in low recognition accuracy;

[0008] 4) The building shape of the block model is only a pyramidal block, without considering the tangent effect of the internal structural surface, which is out of the engineering reality; the construction position of the block model is mainly located at the face of the tunnel or at the slope, without considering the effect of the face of the tunnel and the edge The impact of blasting disturbance at the wall connection; the scale of the structural surface on which the building blocks are based is infinitely extended, which is inconsistent with the actual working conditions

[0009] 5) The traditional geometric stability analysis method of block structure is mainly vector analysis method, which is more effective for triangular pyramids, but it is calculated when analyzing heterogeneous blocks above pentagonal pyramids, including truncated prism blocks and inclined corrugated truss blocks. The amount is huge and produces multiple solutions, which makes it impossible to apply

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