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Blocking method suitable for drilling blasting and tool for same

A technology of tools and blastholes, which is applied in the field of plugging methods and tools used in the method, can solve the problems of affecting the health of construction workers on site, not reaching the air interval charge, time-consuming and high cost of plugging, and improving blasting efficiency. Effectiveness, good sealing performance, and the effect of improving construction efficiency

Inactive Publication Date: 2012-07-25
WUHAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Blast hole plugging usually uses blasting mud as the plugging material. For air-spaced charge drilling blasting, a spacer or support needs to be set between the air column and the plugging mud to support the blasting mud, which is time-consuming and expensive , and once the spacer or support expires, it will not achieve the effect of air-spaced charge
In addition, the rock blasting process produces a large amount of dust, which pollutes the environment and affects the health of construction workers on site

Method used

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  • Blocking method suitable for drilling blasting and tool for same
  • Blocking method suitable for drilling blasting and tool for same
  • Blocking method suitable for drilling blasting and tool for same

Examples

Experimental program
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Effect test

Embodiment

[0024] At first introduce the technical scheme of the present invention:

[0025] 1. According to the diameter of the blasthole to be blocked and the length of the blocked section, select the model of the customized cylindrical waterproof canvas water bag 1. The diameter of the canvas water bag 1 is 1-2cm larger than the diameter of the blasthole, and the length is 10cm longer than the blocked section. .

[0026] 2. Put the canvas water bag 1 into the blasthole after the charge of the blast hole is finished, the load-bearing belt 4 on the upper part of the canvas water bag 1 is supported on a load-bearing rod 5, the load-bearing rod 5 spans the hole of the blast hole, and the load-bearing rod 5 The end is more than 10cm away from the edge of the hole.

[0027] 3. Fill the canvas water bag 1 with water through the water injection hole 2 at the upper end of the canvas water bag 1. After the canvas water bag 1 is filled with water, tighten the water injection hole to seal the ca...

specific Embodiment approach

[0034] A mine adopts blasting mining, the drilling depth is 20m, the hole diameter is 200mm, the length of the blocking section is 3.0m, and the air interval is used for charging. The specific implementation of this technology is as follows:

[0035] (1) After the explosives are installed in the air-spaced charging section in the hole, the detonating index connected with the detonating bomb is drawn out of the hole.

[0036] (2) Put the custom-made waterproof canvas water bag 1 with a diameter of 210 mm and a length of 3.1 m into the hole, take a log load-bearing rod 5 with a diameter of 8 cm, pass through the load-bearing belt 4 on the upper part of the canvas water bag 1, and then place the log Across the blasthole orifice, the log ends shall have a minimum distance of 15 cm from the edge of the hole.

[0037] (3) Fill the canvas water bag 1 with water through the water injection hole 2 at the upper end of the waterproof canvas water bag 1 until the canvas water bag 1 is fil...

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Abstract

The invention relates to a blocking method and a tool for the same, in particular to a blocking method suitable for drilling blasting and a tool for the same. Aiming at overcoming the shortcomings of an existing blocking method for air spaced-loading drilling blasting, the blocking method enables a blast hole blocking section to be modified to water-loading blocking of a cylindrical poly vinyl chloride (PVC) waterproof paulin bag. A water body in the blasthole water bag has the effects of a conventional blocking body, and shock waves in water can be formed simultaneously under the effect of explosion shock waves so that the water body carries out axial high-speed motion along a blasthole. When the water body penetrates through a jet flow hole on an opening portion of the blocking water bag, the atomization effect is generated, blasting dust can be covered well, the dust amount on the blasting site after the blasting is reduced, and air pollution to the surrounding environment caused by the dust is reduced. The blocking method suitable for drilling blasting and the tool for the same can be used for rock mass blasting construction in the field of mines, water conservation and hydroelectric power, traffic and the like.

Description

technical field [0001] The invention relates to a plugging method and a tool used in the method, in particular to a plugging method suitable for drilling and blasting and a tool used in the method. Background technique [0002] In geotechnical engineering blasting, hole blockage is an important link in the drilling and blasting method and one of the important factors affecting the blasting effect, especially for air spaced charge drilling and blasting. Both theory and practice have shown that although the impact of blast hole clogging and non-blocking on the peak value of the blast shock wave is not obvious, the attenuation of the subsequent blast hole pressure is obviously much slower after plugging, which prolongs the duration of the blast hole pressure and improves the Explosive utilization. Blast hole plugging usually uses blasting mud as the plugging material. For air-spaced charge drilling blasting, a spacer or support needs to be set between the air column and the pl...

Claims

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Application Information

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IPC IPC(8): F42D1/18
Inventor 卢文波郑炳旭宋锦泉陈明严鹏李战军
Owner WUHAN UNIV
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