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In-situ evaluation and control design method of rockburst grade

An evaluation method and rockburst technology, applied in design optimization/simulation, automatic drilling control system, mining equipment, etc., can solve problems such as the threat of construction personnel and equipment, increase construction cost, affect construction progress, etc., and reduce the risk of occurrence , to ensure the effect of construction safety

Active Publication Date: 2022-07-15
CHINA UNIV OF MINING & TECH (BEIJING) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Especially for roadways with deep burial, high stress and complex geological structure, strong dynamic phenomena are prone to occur, which poses a huge threat to construction personnel and equipment, and at the same time increases construction costs and affects construction progress

Method used

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  • In-situ evaluation and control design method of rockburst grade
  • In-situ evaluation and control design method of rockburst grade
  • In-situ evaluation and control design method of rockburst grade

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Embodiment Construction

[0068] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0069] The rockburst grade in-situ evaluation and control design method provided by the embodiments of the present application can be applied to the design and construction process of tunnel or chamber excavation and excavation in coal mining. figure 1 A technical roadmap for the in-situ evaluation and control design method of rockburst grades is provided for the embodiments of this application, such as figure 1 The specific processing process is as follows:

[0070] During the design and construction of tunnel or chamber excavation and excavation in coal mining, the ...

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Abstract

The invention relates to an in-situ evaluation and control design method for rock burst grades, and relates to the technical field of underground engineering safety. The method adopts an intelligent drilling rig to carry out stress relief drilling test of surrounding rock casing holes, obtains the maximum principal stress of surrounding rock, parameters while drilling of the intelligent drilling rig and preset drill bit parameters; Compressive strength: According to the equivalent compressive strength and maximum principal stress of the surrounding rock, the rockburst grade of the surrounding rock is determined, and the rockburst control joint support system is designed according to the rockburst grade. The invention can reduce the risk of rock burst and ensure construction safety.

Description

technical field [0001] The present application relates to the technical field of underground engineering safety, in particular to an in-situ evaluation and control design method for rock burst levels. Background technique [0002] Rockburst is a phenomenon in which the elastic deformation accumulated in the rock mass can be suddenly and violently released under certain conditions, resulting in rock bursting and ejection. It mostly occurs in hard rock (coal) layers with high strength and thickness. Including rock (coal) layer roof and floor conditions, original rock stress, buried depth, etc. At present, with the depletion of shallow coal resources, deep coal mining will become the norm. Due to the obvious difference between the deep rock mechanical behavior and the shallow one and the complexity of the deep rock formation environment, the dynamic disaster accidents represented by rock burst and rock burst occurred in the deep coal mining, compared with the shallow one, the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B49/00E21B44/00E21D11/15E21D20/02E21D21/02E21B10/02G01N3/12G06F30/20G06F119/14
CPCE21B49/003E21B49/00E21B44/00E21D11/152E21D20/02E21D21/02E21B10/02G01N3/12G06F30/20G01N2203/0676G06F2119/14
Inventor 王琦吴文瑞江贝高红科黄玉兵王悦
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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