CN211527218U

CN211527218U - Underwater blasting explosive charging structure for reef explosion

Info

Publication number: CN211527218U
Application number: CN201822166457.6U
Authority: CN
Inventors: 王新泉
Original assignee: Hangzhou Jiangrun Technology Co Ltd
Current assignee: Hangzhou Jiangrun Technology Co Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2020-09-18
Anticipated expiration: 2028-12-21

Abstract

The utility model discloses a blasting reef underwater blasting loaded constitution, including drilling and blasting ship, sleeve pipe, counter weight formula pipe, drilling, explosive column, detonator and stemming. The bottom of the counterweight type conduit is provided with a counterweight, holes are distributed on the conduit wall and coated with non-woven geotextile, and the conduit wall can be stably embedded into a drill hole of the river bottom reef after being penetrated by a sleeve based on the principles of increasing dead weight and reducing buoyancy by soaking, thereby not only protecting the drill hole, but also guiding the subsequent charging and backfilling. The utility model discloses an explode reef loaded constitution of blasting under water has characteristics such as prevent that the pore-forming backward flow from blockking up, charging quality and efficient, is particularly useful for exploding underwater blasting powder charge operation among the engineering is dredged to the explosion reef.

Description

Underwater blasting explosive charging structure for reef explosion

Technical Field

The utility model relates to an engineering field is dredged to the fried reef of inland river channel, concretely relates to explode reef loaded constitution that explodes under water.

Background

The continuous development of the water transportation industry causes that harbor ponds and navigation channels with insufficient water depth conditions need to be dredged deeply, and an underwater blasting mode is adopted when hard soil is encountered. The underwater blasting mode generally depends on the conditions of dredging and excavating area, terrain, excavating depth and the like. And for the area with the covering layer, dredging construction is firstly carried out, reef blasting excavation is directly carried out on the area without the covering layer, and underwater drilling blasting or naked blasting is generally adopted for reef blasting according to the excavation thickness. The reef explosion engineering not only requires accurate positioning and reasonable determination of explosion parameters, accurate charging and the like, but also focuses on controlling explosion seismic waves, flying rocks and flying dust and reducing pollution to the surrounding environment.

The reef explosion dredging construction mainly comprises the processes of underwater topography measurement, drilling and blasting ship positioning, underwater drilling, drilling and explosive filling and filling, connection of an initiation network, drilling and blasting ship displacement, initiation and the like. The underwater drilling method generally adopts a sleeve drilling method, but is influenced by water flow scouring, backflow such as silt and broken stones is easily caused to block blast holes after hole forming, subsequent charging quality and reef explosion effect are influenced, even secondary reef explosion is required, and workload and construction cost are increased. Therefore, a practical and reliable underwater reef explosion charging structure is needed, the charging quality is ensured, and the success rate of reef explosion is improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is not enough among the prior art to overcome the purpose, provides one kind and can prevent that the pore-forming backward flow from blockking up, explosive charge quality and efficient explode reef loaded structure of blasting under water.

In order to realize above arbitrary purpose, the utility model provides an explode reef loaded constitution that explodes under water, including the counter weight formula pipe that is used for the powder charge, the length of counter weight formula pipe is greater than reef depth of water H_{Depth of water}And the depth H of the drilled hole_{Depth of hole}And one end of the counterweight type catheter is used for being inserted into the drill hole, and the other end of the counterweight type catheter is used for dosing.

Preferably, the bottom of the counterweight type conduit is further provided with a counterweight, holes and a non-woven geotextile, the counterweight is arranged at the bottommost end, the holes are uniformly distributed on the periphery of the conduit wall, and the non-woven geotextile is coated on the outermost layer of the bottom of the counterweight type conduit.

Preferably, the external diameter of the weighted conduit is smaller than the internal diameter of the casing, the external diameter of the weighted conduit is smaller than the internal diameter of the borehole, and the orifice of the weighted conduit is positioned above the water surface.

Preferably, the medicine injection device further comprises a packing for limiting the medicine column at the bottom of the counterweight type catheter; the packing is fine pebbles or sand.

Compared with the prior art, the utility model provides a technical scheme has following beneficial effect:

(1) the counterweight type conduit of the utility model can be stably embedded in the drill hole based on the principle of increasing dead weight and reducing buoyancy by soaking, and ensures the drilling quality by avoiding the backflow of silt, gravel and the like from blocking the drill hole;

(2) the counterweight type guide pipe of the utility model can be further used as a guide pipe for charging and backfilling after the sleeve is pulled out, thereby effectively improving the charging efficiency and quality;

(3) the utility model discloses a counter weight formula pipe can guarantee that the detonator connects in order for the detonating network, effectively improves charge efficiency.

Drawings

Fig. 1 is a longitudinal cross-sectional view of a reef explosion underwater explosion charge structure before extraction of a casing according to an embodiment of the present invention.

Fig. 2 is a longitudinal cross-sectional view of a reef explosion underwater explosion charge structure after extraction of a casing according to an embodiment of the present invention.

Fig. 3 is a longitudinal cross-sectional view of a reef explosion underwater blasting charge structure after the charge is backfilled according to an embodiment of the invention.

Fig. 4 is a partial schematic view of a reef explosion underwater blasting charge structure after the charge is backfilled according to an embodiment of the invention.

In the figure: 1-drilling and blasting ship; 2-a sleeve; 3-a counterweight catheter; 4, drilling; 5-carrying out grain treatment; 6-detonator; 7-a detonating tube; 8-a tampon; 9-counterweight; 10-holes; 11-nonwoven geotextile; 12-reef; 13-a drilling machine; 14-drill rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

As shown in fig. 1-4, according to the utility model discloses a structure of blasting reef underwater blasting loaded constitution is demonstrateed, include in the structure: drill and explode ship (1), sleeve pipe (2), drilling (4), explosive column (5), detonator (6), detonator (7) and stemming (8), wherein wear in counter weight formula pipe (3) imbed river bed reef (12) behind sleeve pipe (2) in drilling (4), detonator (6) are established inside explosive column (5), place in together counter weight formula pipe (3) bottom, detonator (7) are connected detonator (6) upwards extend to sleeve pipe (2) outside of the tube, stemming (8) are used for backfilling counter weight formula pipe (3) with space between explosive column (5).

Specifically, the bottom of the counterweight type conduit (3) is also provided with a counterweight (9), a hole (10) and a non-woven geotextile (11), the counterweight (9) is arranged at the bottom end, the self weight of the pipe body is increased, the holes (10) are uniformly distributed on the periphery of the pipe wall, the non-woven geotextile (11) is coated on the outermost layer, thereby not only avoiding the backflow of silt, gravel and the like to block the drill hole, but also ensuring that the buoyancy in the river water immersion pipe is reduced, ensuring that the counterweight type conduit (3) is stably embedded in the drill hole (4), the outer diameter of the counterweight type conduit (3) is slightly smaller than the inner diameters of the casing pipe (2) and the drill hole (4), the height of the pipe orifice extends to the position above the water surface, the backfill height of the filling material (8) is higher than the height of the hole (10) to ensure that the explosive column does not float, fine-grained pebbles or gravels are preferably selected, the detonating tube (7) extends out of the casing (2) and then is connected in a gathering manner to form a detonating network.

The explosive charging process of the underwater explosive charging structure for the reef explosion comprises the following steps:

before charging, after pore-forming and slag removal by a sleeve drilling method, a counterweight type conduit (3) is inserted into the sleeve in time, and then the sleeve (2) is pulled out. The length of the counterweight type conduit (3) is preferably larger than the reef water depth H_{Depth of water}And the depth H of the drilled hole_{Depth of hole}And the pipe orifice of the water pipe is exposed out of the water surface.

When charging, the explosive column (5) is connected with the detonator (6) and the detonating tube (7) in sequence and then is placed to the bottom of the hole along the inner wall of the counterweight type conduit (3). When the detonator is lowered, the detonator (7) can be loosely bound on the main rope to prevent the detonator from being broken.

After the medicine is filled, the gap between the counterweight type guide pipe (3) and the medicine column (5) is backfilled by using fine pebbles or gravels and the like as a filling material (8), and the backfilling height is higher than the hole (10) to ensure that the medicine column (5) is not floated. And finally, the detonating tubes (7) are connected on the water surface in a gathering manner to form a detonating network.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. A reef explosion underwater blasting charge structure is characterized by comprising a counterweight type conduit for charging, wherein the length of the counterweight type conduit is greater than the water depth H of reef_{Depth of water}And the depth H of the drilled hole_{Depth of hole}And one end of the counterweight type conduit is used for being inserted into the drill hole, and the other end of the counterweight type conduit is used for dosing.

2. The reef underwater blasting charge structure according to claim 1, wherein the bottom of the counter weight type conduit is further provided with a counter weight, holes and non-woven geotextile, the counter weight is arranged at the bottommost end, the holes are uniformly distributed around the conduit wall, and the non-woven geotextile covers the outermost layer of the bottom of the counter weight type conduit.

3. The reef underwater blasting charge structure of claim 1 wherein the outside diameter of the weighted conduit is less than the inside diameter of the casing, the outside diameter of the weighted conduit is less than the inside diameter of the borehole, and the mouth of the weighted conduit is above the water surface.

4. A reef underwater blasting charge structure as recited in claim 1 further comprising a packing for confining the charge to the base of the weighted conduit; the packing is fine pebbles or sand.