Reef blasting method in underwater complex geological condition

A technology of complex geology and reef rocks, applied in blasting and other directions, can solve problems such as poor blasting effect, inability to charge powder, and difficult operation, so as to avoid difficulties and dangers, wide use range, and improve safety.

Inactive Publication Date: 2006-12-27
裘尧云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Underwater exposed blasting, although the method is simple to operate, the blasting effect is poor, the consumption of chemicals is high, the blasting vibration, water and underwater shock waves are large, so it has a great impact on the water environment of the blasting reef area, and is affected by water flow and water depth
[0004] 2. Underwater drilling and blasting: Although the diameter and depth of this method are not limited, divers still need to complete underwater hole finding and charge blockage. Poor, difficult to operate, resulting in no holes found, improper placement of explosives, and even damage to the gun device, resulting in accidents such as missed or rejected explosions
[0006] Although this method has the advantages of charging and plugging without the need for divers to participate, it is difficult to form holes when encountering un

Method used

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  • Reef blasting method in underwater complex geological condition
  • Reef blasting method in underwater complex geological condition
  • Reef blasting method in underwater complex geological condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] High-pressure gas or high-pressure water flushing method, the steps include:

[0037] a) Positioning: position the reef blasting workboat or working platform according to the designed position;

[0038] b), scour the covering layer and the gravel layer; the drill pipe 4 with the drill bit 5 is lowered to the covering layer and the crushed stone layer 6 surfaces by the rotary head 1 on the drilling rig 2, such as Figure 1A As shown, utilize high-pressure gas or high-pressure water, through the through hole on the drilling rod 4 end drill bit 5 that is connected on the drilling rig 2, the covering layer on the reef, the gravel layer 6 are washed away until the reef surface is exposed, as shown in FIG. Figure 1B shown;

[0039] c), drilling: the rotary head 1 on the drilling rig 2 drives the drill pipe 4 with the drill bit 5 to drill to the design depth on the reef surface, such as Figure 1C shown;

[0040] d), Casing: At this time, the rotary head 1 on the drilling ...

Embodiment 2

[0047] The casing follow-up method, the steps include:

[0048] a) Positioning: position the reef blasting workboat or water work platform according to the designed position;

[0049] b), special tool positioning: place the bottom of the special tool and the central drill bit 18 on the combined drill pipe 13 in the outer casing on the covering layer and the crushed stone layer 6, and use the clasp 3 on the casing frame to place the outer casing 12 is fixed on the side of the workboat or the work platform or the front side of the drilling rig, as shown in Figure 2A;

[0050] c), drilling: the rotary head 1 on the drilling machine 2 drives the rod stabilizer 14 on the combined drill rod 13, the eccentric wheel 16 with the cutter head 17, and the center drill bit 18 to drill holes. Eccentric wheel 16 expands, as image 3As shown, at this time, the bore diameter is greater than the outer diameter of the outer casing 12, and the rod stabilizer 14 drives the pipe shoe 15 and the ou...

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Abstract

The invention relates to a method for exploding underwater complex rock, especially be used in the condition that the rock is coated or the geometry is complex, wherein the invention uses high-pressure gas or high-pressure water to brush; the high-pressure gas or water via the through hole of driller will brush clear the coat and stone layer on the rock to expose the rock; the rotation head of driller drives the driller to designed depth, or using muffle following method, to arrange the combined drilling rod on the coat; the rotation head drives the central driller to the eccentric wheel, while the diameter of drill hole is larger than the diameter of muffle; the muffle and central driller are through the coat to drill to the designed depth; then taking out drilling rod or combined drilling rod away the muffle or outer muffle; and the explosive is poured into the muffle or outer muffle to the hole bottom; then drawing out the muffle or outer muffle to take out explosive line; the repeating drilling several explode holes; and starting explosion. The invention can improve the working efficiency and reduce cost without diver.

Description

technical field [0001] The invention relates to a method for blasting reefs, in particular to a method for blasting reefs under complicated underwater geological conditions or underwater complex geological reefs with covering layers on the reefs. Background technique [0002] At present, domestic underwater reef blasting mostly adopts two methods: [0003] 1. Underwater bare blasting, although the method is simple to operate, the blasting effect is poor, the consumption of chemicals is high, the blasting vibration, water and underwater shock waves are large, so it has a great impact on the water environment of the blasting reef area, and is affected by water flow and water depth. [0004] 2. Underwater drilling and blasting: Although the diameter and depth of this method are not limited, divers still need to complete underwater hole finding and charge blockage. Poor, difficult to operate, resulting in no holes, improper placement of explosives, and even damage to the gun de...

Claims

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Application Information

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IPC IPC(8): F42D3/04
Inventor 裘尧云
Owner 裘尧云
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