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Design method of anchor bolt support for highway tunnel

A bolt support, road tunnel technology, applied in the installation of bolts, database design/maintenance, calculation, etc., can solve the lack of security of the support structure, waste of materials, difficult to quantitatively analyze joint characteristics and excavation blast disturbance, etc. problems, achieve the effect of shortening the design cycle, improving the rationality, and simplifying the design method

Active Publication Date: 2016-07-20
TONGJI UNIV +3
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the defects of the prior art, to provide a road tunnel bolt support design method, the road tunnel bolt support design method is based on rock mass joint characteristics and blasting vibration effect design, by constructing The intelligent design database of highway tunnel bolt support can effectively solve the technical difficulties that the current codes and standards are difficult to quantitatively analyze the characteristics of joints and the impact of excavation and blasting disturbance, so as to avoid the serious waste of materials and insufficient safety of support structures in actual engineering

Method used

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  • Design method of anchor bolt support for highway tunnel
  • Design method of anchor bolt support for highway tunnel
  • Design method of anchor bolt support for highway tunnel

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Embodiment 1

[0034] In the case of a specific tunnel project and the intelligent design database of highway tunnel bolt support has not been established in the early stage, according to the attached Figure 1~4 , the implementation steps of the road tunnel bolt support design method based on rock mass joint characteristics and blasting vibration effects of the present invention are as follows:

[0035]A. Step (1): Use the on-site geological sketch method to describe the geological conditions of the tunnel face in detail, count the parameters of the tunnel rock formation, joint characteristics and roughness, and quantify the joint characteristics (joint spacing, dip angle, number of groups, etc. ), analyze the dominant joint surface, and give the distribution model and dispersion degree of the above indicators;

[0036] B. Step (2): Use the Monte Carlo method to simulate the spatial distribution characteristics of joints, and construct a three-dimensional network model of the tunnel site ar...

Embodiment 2

[0052] In the case of the intelligent design database of highway tunnel bolt support, according to the attached figure 1 , the implementation steps of the road tunnel bolt support design method based on rock mass joint characteristics and blasting vibration effects of the present invention are as follows:

[0053] A. Step (1): For a given tunnel project, according to geological survey data and design documents, artificially extract the surrounding rock geological conditions, hydrological conditions and construction scale of the tunnel site area, and input the already constructed highway tunnel bolt support Intelligent design database for retrieval;

[0054] B. Step (2): If a matching item is retrieved in the highway tunnel bolting intelligent design database, directly extract the recommended bolting parameter scheme output from the database, form a design document, and guide the construction;

[0055] C. Step (3): If no matching item can be retrieved in the intelligent design...

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Abstract

The invention discloses a design method of an anchor bolt support for a highway tunnel. The method is characterized in that the design method of the anchor bolt support for the highway tunnel is designed on the basis of rock mass joint characteristics and blast vibration effects. The design method of the anchor bolt support for the highway tunnel comprises implementing steps as follows: step (1) establishing a three-dimensional digital and numerical value integrated model; step (2) proposing a preliminary scheme of the anchor bolt support; step (3) dynamically determining an anchor bolt support scheme and parameters which are suitable for an engineering; step (4) establishing an intelligent design database of the anchor bolt support for the highway tunnel; step (5) gradually improving the engineering applicability of the design scheme and the established database.

Description

technical field [0001] The invention relates to a bolt support design for a road tunnel, and in particular discloses a design method for a road tunnel bolt support based on rock mass joint characteristics and blasting vibration effects. Background technique [0002] Bolt support is an important part of the tunnel support system. Whether the bolt design parameters are reasonable or not directly affects the structural safety issues in the construction and operation stages. [0003] At present, when designing tunnel bolt support according to the domestic highway tunnel design code, only the grade of the surrounding rock is considered as the key factor, and the recommended support form and parameters are simply given based on the grade of the surrounding rock, and the whole section adopts uniformity parameter. However, engineering experience shows that the characteristics of surrounding rock joints (trend, inclination, inclination), construction method and blasting parameters a...

Claims

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Application Information

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IPC IPC(8): G06F17/50E21D20/00
CPCE21D20/00G06F16/21G06F16/2455G06F30/13G06T17/00
Inventor 郭吉平冉茂学刘学增周森朱文轩桑运龙周若阳孙州杨帆
Owner TONGJI UNIV
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