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A water-containing blast hole mortar isolation device and isolation method thereof

A technology for isolating devices and blasting holes, applied in blasting and other directions, can solve problems such as poor isolation effect, inability to adapt to changes in the depth of mortar layers, and lower utilization rate of blasting holes, so as to achieve high utilization rate of blasting holes, increase utilization rate of explosives, The effect of saving blasting cost

Active Publication Date: 2018-04-10
CHINA THREE GORGES CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a water-containing blast hole mortar isolation device and its isolation method, which can solve the problems of not being able to adapt to changes in the depth of the mortar layer, poor isolation effect, occupying the hole depth and reducing the utilization rate of the blast hole, and effectively isolate the blasting hole. Explosive layer and mortar layer in the hole, avoiding the failure of explosive mixed with mortar at the bottom of the blast hole, improving the utilization rate of explosives, avoiding residual rock sills, and saving blasting costs

Method used

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  • A water-containing blast hole mortar isolation device and isolation method thereof
  • A water-containing blast hole mortar isolation device and isolation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] like figure 1 and figure 2 As shown, a water-containing blast hole mortar isolation device includes a hollow isolation ball made of flexible plastic film, a grouting hose 1 is communicated with the sphere 2 of the isolation ball, and the sphere 2 of the isolation ball is filled with The slurry explosive 3, the diameter of the sphere 2 filled with the slurry explosive 3 is 90-95% of the aperture of the blast hole 5.

[0031] The thickness of the flexible plastic film is ≥0.3 mm.

[0032] A method for isolating slurry explosives and mortar using the above isolating device, the method includes the following steps:

[0033] 1) Measure the depth h=140 mm of the mortar layer 4) in the blast hole 5;

[0034] 2) According to the diameter Φ=70 mm of the blast hole 5 and the hole depth H=5000 mm, combined with the depth h of the mortar layer 4 measured in step 1, calculate the diameter and quantity of the required isolation balls. The calculation process is as follows:

[00...

Embodiment 2

[0045] like figure 1 and figure 2 As shown, a water-containing blast hole mortar isolation device includes a hollow isolation ball made of flexible plastic film, a grouting hose 1 is communicated with the sphere 2 of the isolation ball, and the sphere 2 of the isolation ball is filled with The slurry explosive 3, the diameter of the sphere 2 filled with the slurry explosive 3 is 90-95% of the aperture of the blast hole 5.

[0046] The thickness of the flexible plastic film is ≥0.3 mm.

[0047] A method for isolating slurry explosives and mortar using the above isolating device, the method includes the following steps:

[0048] 1) Measure the depth h=320 mm of the mortar layer 4) in the blast hole 5;

[0049] 2) According to the diameter of the blast hole 5 = Φ = 120 mm and the hole depth H = 9000 mm, combined with the depth h of the mortar layer 4 measured in step 1, calculate the diameter and quantity of the required isolation balls. The calculation process is as follows:...

Embodiment 3

[0060] like figure 1 and figure 2 As shown, a water-containing blast hole mortar isolation device includes a hollow isolation ball made of flexible plastic film, a grouting hose 1 is communicated with the sphere 2 of the isolation ball, and the sphere 2 of the isolation ball is filled with The slurry explosive 3, the diameter of the sphere 2 filled with the slurry explosive 3 is 90-95% of the aperture of the blast hole 5.

[0061] The thickness of the flexible plastic film is ≥0.3mm.

[0062] A method for isolating slurry explosives and mortar using the above isolating device, the method includes the following steps:

[0063] 1) Measure the depth h=180 mm of the mortar layer 4) in the blast hole 5;

[0064] 2) According to the diameter Φ=200 mm of the blast hole 5 and the hole depth H=6000 mm, combined with the depth h of the mortar layer 4 measured in step 1, calculate the diameter and quantity of the required isolation balls. The calculation process is as follows:

[00...

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Abstract

A water-containing blasting hole mortar isolation device comprises a hollow isolation ball made of flexible plastic film, a grouting hose is communicated with the isolation ball, and the isolation ball is filled with slurry explosives. The method includes the following steps: 1) measuring the depth h of the mortar layer in the blast hole; 2) calculating the diameter and quantity of the required isolation balls; 3) making the isolation balls; 4) putting no less than step 2) into the blast hole The calculated number of isolation balls; 5) Inject the slurry explosive into the blast hole to form an explosive layer in the hole; that is, to realize the isolation of the slurry explosive and the mortar in the blast hole containing water. The invention provides a water-containing blast hole mortar isolation device and its isolation method, which effectively isolates the explosive layer and the mortar layer in the blast hole, avoids the failure of the explosive mixed with the mortar at the bottom of the blast hole, improves the utilization rate of the explosive, and avoids residual rock sills. Save blasting costs.

Description

technical field [0001] The invention relates to the field of blasting construction, in particular to an isolating device for blast hole mortar containing water and a method for isolating slurry explosives and mortar by using the isolating device. Background technique [0002] At present, slurry explosives such as emulsion explosives mixed on site are widely used in blasting construction due to their advantages of high efficiency, safety, reliability, and low cost. However, in blasting construction operations, due to water seepage at the bottom of the blast hole, residual water in the drill hole, etc., water accumulation in the blast hole is common, and this part of the accumulated water forms a mortar-like mixture with the rock slag from drilling and rock drilling at the bottom of the blast hole. When the slurry explosive is injected into the blast hole, due to the effect of the pumping pressure and the self-weight of the explosive, a part of the explosive will be mixed with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42D1/08
Inventor 吴天明
Owner CHINA THREE GORGES CORPORATION
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