Method for obtaining tunnel excavation face surrounding rock point cloud model

A tunnel excavation and acquisition method technology, applied in 3D modeling, color TV parts, TV system parts, etc., can solve the problems of image resolution reduction, large scenes, limited acquisition range, etc., to overcome mutual The effects of occlusion, low acquisition cost, and low professional requirements

Pending Publication Date: 2019-08-09
ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
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AI Technical Summary

Benefits of technology

This technology allows scientists to create 360 degree views from different angles around rocks during tunneling operations while maintain their privacy by recording everything they see behind them at once. Its advantages include lower costs associated with acquiring data, ease of use, and precise location tracking capabilities that help guide tunnel constructions more efficiently.

Problems solved by technology

This patents discuss various techniques for acquiring data around areas where excavating faces may contain valuable material such as buried mineral resources like caving stones. Existing ways involve manually searching for relevant area(s), taking photos by hand cameras, observing underground walls, measuring their dimensions accurately, etc., making them challenged when trying to identify surrounding rock conditions. There also exist issues involving environmental factors including air pollution caused by exhaust gas emissions, noise levels associated with drilling operations, and difficulty accessing remote locations due to restricted viewspace.

Method used

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  • Method for obtaining tunnel excavation face surrounding rock point cloud model
  • Method for obtaining tunnel excavation face surrounding rock point cloud model
  • Method for obtaining tunnel excavation face surrounding rock point cloud model

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Embodiment Construction

[0042] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0043] Such as figure 1 As shown, the method for obtaining the surrounding rock point cloud model of the tunnel excavation face of the present invention comprises the following steps:

[0044] (1) Select camera parameters according to the tunnel environment. The development of photography technology makes most cameras have high performance. In order to achieve high enough precision and meet the requirements of different shooting distances, it is recommended to choose a camera with high resolution and zoom At the same time, the construction environment of the "New Austrian Method" tunnel is closed. The light source on site mainly comes from the LED lighting on the trolley, and the light color is white. However, there will still be insufficient local lighting

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Abstract

The invention discloses a method for obtaining a tunnel excavation face surrounding rock point cloud model. The method comprises the following steps: (1) selecting camera parameters according to the tunnel environment; (2) selecting shooting time according to a tunnel construction procedure; (3) selecting a shooting mode, a shooting position and a mark point position according to the excavation length; (4) selecting shooting parameters according to the environment of the tunnel excavation section; and (5) acquiring a surrounding rock image set after tunnel excavation, and processing the imageset to obtain a three-dimensional point cloud model of the surrounding rock after tunnel excavation. Compared with the prior art, the method has the advantages of being rich in collected data size, low in cost, rapid to operate, high in flexibility and the like, a geological engineer can directly shoot and record when observing surrounding rock through geological sketch after excavation, the siteconstruction progress is not affected, shooting personnel can flexibly change the shooting angle and position, and the problem that rock outcrop is mutually shielded is solved as much as possible.

Description

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Claims

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Application Information

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Owner ZHEJIANG PROVINCIAL INST OF COMM PLANNING DESIGN & RES CO LTD
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