Single free face rock plug blasting parameter test numerical simulation prediction method

A technology of numerical simulation and prediction method, which is applied in the fields of electrical digital data processing, design optimization/simulation, special data processing applications, etc., and can solve difficult and impossible problems

Pending Publication Date: 2022-01-11
中国能源建设集团广西水电工程局有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The water inlets of the rock plugs are tens of meters or even hundreds of meters below the water surface. If they cannot be successfully penetrated, it will be very difficult or even impossible to deal with, which will waste the investment of the entire project; In order to make the rock plug water inlet well formed and obtain a better cross-sectional profile to ensure that the hydraulic tunnel water inlet has good hydraulic conditions and the stability of the rock plug water inlet during long-term operation, only Take effective contour control blasting measures

Method used

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  • Single free face rock plug blasting parameter test numerical simulation prediction method
  • Single free face rock plug blasting parameter test numerical simulation prediction method
  • Single free face rock plug blasting parameter test numerical simulation prediction method

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Embodiment Construction

[0043] like Figure 1-18 In the figure, a numerical simulation prediction method of rock plug blasting parameter test with single air face, which includes the following steps:

[0044] Step 1, analysis, using the same blasting parameters to analyze the penetration effect under the action of a single air surface;

[0045] Step 2, modeling, using the ABAQUS / Explicit computing platform to establish a three-dimensional refined surrounding rock-cavity finite element model, using the life-and-death element technology Model change to simulate the effect of blasting and excavation; ABAQUS contains a rich element that can simulate arbitrary geometric shapes Library, and has a model library of various types of materials, which can simulate the performance of typical engineering materials, including metals, rubber, polymer materials, composite materials, reinforced concrete, compressible hyperelastic foam materials, and geological materials such as soil and rock, As a general-purpose si...

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Abstract

A single free face rock plug blasting parameter test numerical simulation prediction method comprises the following steps: analyzing, modeling, acquiring a time threshold value, setting a blast hole and a blasting network, calculating model parameters, simulating blasting, extracting a blasting rock mass and surrounding rock state diagram after blasting, and analyzing whether the state diagram achieves an expected effect or not. Whether the blasting of the construction scheme reaches the designed footage or not and whether complete blasting can be achieved or not can be checked, a basis is provided for design and optimization of formal rock plug blasting, a basis is provided for adjustment of blasting parameters and control of the blasting scale conveniently, it is ensured that formal rock plug blasting achieves the perfect effects of blasting, forming and safety, before engineering blasting, plug blasting parameters need to be determined, and test numerical values are obtained.

Description

technical field [0001] The invention belongs to the technical field of rock plug blasting, and relates to a numerical simulation prediction method for rock plug blasting parameters of a single air surface. Background technique [0002] The lithology of the rock plug is the Yaliang unit in the late Yanshanian period (K 1 y) Granite, interspersed with diabase veins. The overburden of the rock plug body is scattered, with a thickness of 1.0m to 1.1m, mainly composed of weakly to slightly weathered granite, with a thickness of about 1.0m to 5.2m, and the rest are slightly weathered, which belongs to favorable geological conditions. The weakly weathered rock is overall relatively neat, weakly permeable, and has a certain self-stabilizing ability. [0003] The water inlets of the rock plugs are tens of meters or even hundreds of meters below the water surface. If they cannot be successfully penetrated, it will be very difficult or even impossible to deal with, which will waste t...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G06F30/23G06F30/25G06F119/02
CPCG06F30/23G06F30/25G06F2119/02
Inventor张炎光卢山李果龙陈毅珍颜思扬潘冠臣
Owner中国能源建设集团广西水电工程局有限公司