Method for overbreak-underbreak control of tunnel based on building information modeling (BIM)

Abstract

The invention discloses a method for overbreak-underbreak control of a tunnel based on building information modeling (BIM). According to the method, a full intelligent drill jumbo is connected with acentral processing unit of a user terminal, the precise positioning and multi-arm synchronous attitude adjustment of the drill jumbo are realized in the tunnel, multiple-drilling-arm automatic operation is achieved, and the peripheral contour of the tunnel and the positions of positioning boreholes are measured automatically. Geological analysis is carried out by combining advanced level drillinggeological exploration data with BIM technology analysis, according to drilling and blasting design matched with the implanted drilling and blasting design scheme, in cooperation with the constructionexperience of blasting personnel, the drilling and blasting design scheme is dynamically adjusted, and an LS-DYNA program is combined to perform drilling and blasting simulation, so that the best drilling and blasting program is formulated. The drill jumbo performs drilling according to the scheme, overbreak-underbreak is controlled strictly, and the intelligent and automatic management of personnel and machineries at a tunnel excavation construction site is realized, so that the control of overbreak and underbreak of the tunnel is achieved.

Description

technical field [0001] The invention relates to the related technical field of tunnel construction site technical management, in particular to a method for controlling over- and under-excavation of tunnels based on BIM. Background technique [0002] Excavation is a key process in tunnel construction. Too much over-excavation will not only increase the project cost due to the increase of slag discharge and lining volume, but also cause stress concentration due to local over-excavation, which will affect the stability of surrounding rock. Under-excavation directly affects the thickness of the lining, and it takes time and effort to deal with it. Although overbreak and underbreak are inevitable in drilling and blasting construction, certain measures can be taken to control the value of overbreak and underbreak to a small level, reducing the impact on construction cost, construction progress and tunnel safety. The influencing factors of overbreak and underbreak are divided int...

AI Technical Summary

Problems solved by technology

This technology is only for the self-positioning and measurement of the rock drilling rig, and its function is relatively single, so it cannot realize the intelligent and automatic management of the construction site;

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