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Blast hole blocking device for tunnel blasting

A blast hole plugging and tunneling technology, which is applied in the field of blasting engineering auxiliary devices, can solve the problems of poor filling quality assurance and inconvenient operation, and achieve the effect of high filling quality assurance and convenient operation

Pending Publication Date: 2020-06-02
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, local materials are often used in projects, and mud chips and other materials are generally used as blasting mud to fill blastholes, which is inconvenient to operate and poor in quality assurance of filling.

Method used

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  • Blast hole blocking device for tunnel blasting
  • Blast hole blocking device for tunnel blasting
  • Blast hole blocking device for tunnel blasting

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] In order to facilitate understanding and implementation of the present invention, preferred embodiments of the present invention are selected for further description in conjunction with the accompanying drawings.

[0020] like Figure 1 to Figure 3 As shown, the blasthole blocking device in the present invention includes a stuffing structure 1, and the stuffing structure 1 includes a baffle 11 and a connecting rod 13, one end of the connecting rod 13 is vertically fixedly connected to the middle of the baffle 11, and the other end is used for setting operation At the end, the connecting rod 13 has multiple pieces of force-bearing rods 14 arranged in parallel around the circumference of the connecting rod 13, the axis of the force-bearing rod 14 is parallel to the axis of the connecting rod 13, and each piece of the force-bearing rod 14 is connected with the connecting rod 13 through at least two springs 15. , the connecting rod 13 is provided with an electromagnet 19. T...

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Abstract

The invention relates to a blast hole blocking device for tunnel blasting and belongs to the technical field of blasting engineering auxiliary devices. The blast hole blocking device comprises a packing structural component, wherein the packing structural component comprises a baffle plate and a connecting rod; one end of the connecting rod is perpendicularly and fixedly connected into the middleof the baffle plate; an operating end is arranged at the other end of the connecting rod; a plurality of parallel stressed rods are arranged on the periphery of the connecting rod; the axis of each ofthe stressed rods is parallel with that of the connecting rod; each of the stressed rods is connected with the connecting rod through at least two springs; an electromagnet is arranged on the connecting rod; the electromagnet, a wire, a switch and a power supply are cooperated to form an operating circuit; the switch is arranged at the operating end of the connecting rod; the stressed rods are made of magnetic attraction material; and the packing structural component is provided with a passage allowing a detonating cord to penetrate through. The blast hole blocking device is convenient to operate and is high in packing quality guarantee.

Description

technical field [0001] The invention relates to a blasthole blocking device for tunnel blasting, belonging to the technical field of blasting engineering auxiliary devices. Background technique [0002] Drilling and blasting is a common technology for tunnel excavation, which is widely used in water conservancy and hydropower, mining, transportation and other fields. In the blasting construction process, filling the blast hole can increase the pressure of the detonation gas on the hole wall and prolong the pressure action time, thereby greatly improving the degree of rock expansion and the throwing distance, thereby improving the blasting effect. At present, materials are often obtained locally in engineering. Generally, materials such as mud scraps are used as mud to fill the blastholes, which is inconvenient to operate and has poor quality assurance of filling. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F42D1/18
CPCF42D1/18
Inventor 钟权何坤董官炯刘放
Owner POWERCHINA CHENGDU ENG
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