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Simulation experiment method for tunnel drivage blasting

A technology for simulating experiments and tunnels, applied in the field of experiments, can solve problems such as poor cutting effect and low utilization rate of blastholes, and achieve the effect of reliable experimental methods and reliable experimental results

Inactive Publication Date: 2013-04-24
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a simulation experiment method for simulating roadway excavation and blasting, through which a series of accurate blasting parameters and statistical data of blasting effects can be obtained, which can be used to solve the problems of poor tunneling and cutting effect and low utilization rate of blast holes

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  • Simulation experiment method for tunnel drivage blasting
  • Simulation experiment method for tunnel drivage blasting

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Embodiment Construction

[0022] The present invention is further described with reference to accompanying drawing, and accompanying drawing is an example with circular roadway section. The section of a roadway in a project is circular, with a diameter of 5.0m. The rock is sandy shale with medium joints and a single structure. Each blasting footage is 2.0-2.5m. The problem of poor effect and low blasthole utilization rate is now simulated by the experimental method of the present invention.

[0023] An experimental method for simulating tunneling blasting is as follows:

[0024] The first step is to make the blasting experimental device

[0025] Take a section of circular steel cylinder 2 similar to the section of the actual roadway as the constraint for simulating the rock mass around the roadway. The thickness is 3mm, the depth of the simulated blasthole is (2.0-2.5) / 5=0.4-0.5m, take 0.5m, the length of the steel cylinder 2 is 3.0 times the depth of the simulated blasthole 4, so the length of the s...

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Abstract

The invention discloses a simulation experiment method for tunnel drivage blasting. The simulation experiment method includes the steps of: (1) manufacturing a simulation blasting experiment device, (2) utilizing the blasting experiment device to simulate tunnel cutting blasting, (3) utilizing millisecond initiation technology to perform blasting experiment, and (4) studying cutting holes, auxiliary holes, peripheral hole blasting rock breaking mechanisms, rock movement characteristics after the blasting and blasting effects. According to the simulation experiment method tunnel drivage blasting, a size design and a blasting parameter calculation design are performed through a law of similitude and a corresponding ratio of similitude and a blasting network is arranged, tunnel drivage blasting processes of various kinds of sections and processes of rock breaking and slag throwing of cutting drivage blasting are more completely and truly simulated, and a speed of blasting slag leaving cutting chamber is calculated according to law of motion of blasting slag. Accordingly, a more reliable experiment method and a more reliable experiment result are provided for a mechanism study of mine tunnel drivage blastings.

Description

technical field [0001] The invention relates to an experiment method, in particular to a blasting simulation experiment method. Background technique [0002] In recent years, researchers at home and abroad have done a lot of research on the blasting problem by using the model test method. Many cases illustrate that how to improve the blasting efficiency, improve the blasting effect, increase the footage, and ensure the formation of the roadway is still the main problem to be solved in the rock roadway blasting work. Aiming at the problems of poor cutting effect and low utilization rate of blast holes in roadway excavation, the physical model test method can be used to carry out model test research on different cutting methods. The physical model test method has the advantages of intuition, high reliability, relatively low cost and no delay in on-site production. [0003] The roadway excavation blasting model test is based on the similarity law of blasting simulation, inclu...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/00F42D3/04
Inventor 张宪堂王洪立周红敏韩涛逄焕东
Owner SHANDONG UNIV OF SCI & TECH
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