CN213396784U

CN213396784U - Underwater blasting energy-gathering cartridge bag

Info

Publication number: CN213396784U
Application number: CN202022252792.5U
Authority: CN
Inventors: 胡英国; 刘美山; 杨招伟; 吴新霞
Original assignee: Changjiang River Scientific Research Institute Changjiang Water Resources Commission
Current assignee: Changjiang River Scientific Research Institute Changjiang Water Resources Commission
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-08
Anticipated expiration: 2030-10-12

Abstract

The utility model discloses an underwater blasting energy-gathering cartridge bag, which comprises an energy-gathering cartridge bag, explosives, a plastic foam layer and a counterweight; the energy-gathering medicine cover main body is in a round table shape with a narrow top and a wide bottom, and the bottom of the energy-gathering medicine cover main body is partially or completely protruded inwards; the explosive is filled in the energy-gathering explosive cover; the plastic foam layer wraps the outer side of the energy-gathering medicine cover; the counterweight is placed at the top of the energy-gathering medicine cover; the top of the counterweight and the energy-gathering explosive cover is provided with a hole for laying detonator leads.

Description

Underwater blasting energy-gathering cartridge bag

Technical Field

The utility model belongs to the technical field of the blasting of water conservancy, traffic and ocean engineering etc., concretely relates to explode under water and gather can cartridge bag.

Background

The channel excavation operation is often closely related to the natural construction environment, which means that the natural environment needs to be modified in the construction process, such as excavation and breaking of underwater rock masses and reefs. Blasting is widely used because of its economical and efficient construction. The underwater reef explosion operation in the channel excavation process is generally carried out under the condition of water depth of tens of meters or even hundreds of meters. It is known that the corresponding parameters of explosive such as violent explosive force and the like under the action of deep water static pressure are reduced. In order to improve the primary crushing depth of bare blasting, in addition to increasing the weight of a single explosive package, energy-accumulating explosive packages are adopted in the engineering field at home and abroad, the energy of the explosive is adjusted, and the effect of the explosive on the surface of a rock mass is improved.

However, although the energy-collecting explosive bag can effectively increase the primary crushing depth, the energy-collecting explosive cover is directly contacted with the water body, so that strong underwater shock waves are generated in the non-excavation direction, and the shock waves generated by underwater explosion inevitably influence hydraulic buildings, aquatic organisms, workers and the like in the adjacent water area. There is therefore a great need to be able to reduce underwater blast shock waves in the non-excavation direction.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem that proposes among the background art, the utility model provides an explode under water and gather can cartridge bag, should gather can cartridge bag when realizing that excavation orientation goes up the gathering, still subduct the ascending harmful water hammer wave of non-excavation orientation.

The utility model provides an underwater blasting energy-gathering cartridge bag, which comprises an energy-gathering cartridge bag, an explosive, a plastic foam layer and a counterweight; the energy-gathering medicine cover main body is in a round table shape with a narrow top and a wide bottom, and the bottom of the energy-gathering medicine cover main body is partially or completely protruded inwards; the explosive is filled in the energy-gathering explosive cover; the plastic foam layer wraps the outer side of the energy-gathering medicine cover; the counterweight is placed at the top of the energy-gathering medicine cover; the top of the counterweight and the energy-gathering explosive cover is provided with a hole for laying detonator leads.

Preferably, the inner protrusion at the bottom of the shaped charge holder is in the shape of an arch, a cone, a segment or a bell.

Preferably, a center line of the inner protrusion of the energy-concentrating cover bottom coincides with a center line of the energy-concentrating cover body.

Furthermore, the energy-gathering medicine cover is made of metal materials.

Preferably, the explosive is a high-pressure waterproof explosive, and the dosage of the explosive is not more than 90% of the capacity of the energy-gathering explosive cover.

Preferably, the plastic foam layer is 20m-40cm thick, the compressive strength of the plastic foam layer is not lower than 5MPa, and the density of the plastic foam layer is greater than that of the aqueous medium.

Preferably, the counterweight is concrete.

Preferably, the center line of the counterweight coincides with the center line of the energy-gathering medicine cover.

Preferably, a nylon cloth layer is arranged between the energy-gathering medicine cover and the plastic foam layer.

Preferably, the energy-gathering medicine box also comprises a cylindrical plastic barrel, the cylindrical plastic barrel is reversely sleeved outside the energy-gathering medicine cover wrapping the plastic foam layer, and the counterweight is placed at the top of the plastic barrel; the top of the plastic barrel is provided with a wire for arranging a detonator.

The utility model discloses specific following characteristics and beneficial effect:

(1) the effective control of water hammer waves generated by underwater blasting is realized, and blasting energy accumulation can be enhanced in the excavation direction, so that the rock breaking capacity is increased; the energy released by blasting can be reduced in the non-excavation direction, so that the influence of harmful water shockwaves is reduced.

(2) The structure is simple, the use is convenient, the pollution to the environment is avoided, and the method can be used for construction of shipping, traffic, underwater infrastructure and the like which relate to underwater blasting to reduce the influence of harmful water shock waves.

Drawings

FIG. 1 is a schematic side cross-sectional view of a shaped charge according to an embodiment;

FIG. 2 is a side view of a 4 different shaped energy concentrating patch;

FIG. 3 is a diagram of the mechanism of action of the energy-concentrating cartridge for attenuating water shockwaves.

In the figure, 1-energy-gathering explosive cover, 2-explosive, 3-plastic foam layer, 4-counterweight, 5-steel wire and 6-water shock wave.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.

Referring to fig. 1, a specific structural diagram of the energy-gathering cartridge of the present invention is shown, which comprises an energy-gathering cartridge case 1, an explosive 2, a plastic foam layer 3, and a counterweight 4; the main body of the energy-gathering medicine cover 1 is in a round table shape with a narrow top and a wide bottom, the bottom of the main body is partially or totally protruded inwards, and the central line of the inner protrusion is superposed with the central line of the main body of the energy-gathering medicine cover 1. The inner protrusion is in a shape of arch, cone, segment, bell, etc., and is shown in fig. 2 (a), (b), (c) and (d), respectively. In the present embodiment, the energy concentrating medicated cover 1 is made of a metal material, such as duralumin, pig iron, or the like. The utility model discloses in, gather the effect that can the powder charge container and gather the energy of powder cover 1, set up the bottom in the arch, especially with protruding setting up to arch, toper, segment shape, bell-shaped etc. in will, can further increase and gather the fluidic application range and the intensity in energy cover bottom.

Explosive 2 is filled in the energy-gathering explosive cover 1; in the specific embodiment, the explosive 2 is high-pressure waterproof explosive and is uniformly filled in the energy-gathered explosive cover 1, and the explosive quantity depends on the blasting discharge quantity but does not exceed 90% of the explosive quantity contained in the energy-gathered explosive cover 1.

The outer side of the energy-gathering medicine cover 1 is wrapped with a plastic foam layer 3; in the embodiment, the thickness of the plastic foam layer 3 is 20m-40cm, the compressive strength of the plastic foam layer is not lower than 5MPa, and the density of the plastic foam layer is higher than that of the aqueous medium, so that the energy-collecting medicine bag can smoothly sink into water. In the utility model, the main function of the plastic foam layer 3 is: the impact wave pressure in water is reduced by the breaking of the plastic foam layer.

The top of the energy-gathering medicine cover 1 is provided with a counterweight 4, and preferably, the counterweight 4 is arranged at the center of the top of the energy-gathering medicine cover 1, namely, the center line of the counterweight 4 is superposed with the center line of the energy-gathering medicine cover 1. In the present embodiment, the counterweight 4 is made of concrete, and its weight is related to the depth of water, and its lower limit is not lower than the buoyancy of water at the target position, and its upper limit is greater than the sum of the buoyancy of water and the bearing capacity of plastic foam and metal medicine cover. The utility model discloses in, the counter weight 4 is arranged in and is gathered 1 tops of powder charge cover, is used for making and gathers the resistance that the powder charge overcome water, sinks to the target location.

Preferably, a nylon cloth layer is further provided between the energy concentrating patch 1 and the plastic foam layer 3.

When in use, the energy-gathering medicine bag of the utility model is arranged at the target position, and the target position can be a plurality of. And detonating the explosive after the energy-gathered explosive bag is arranged. Referring to fig. 3, in the axial direction of the energy-gathering explosive cover, the air shock wave generated by explosive detonation can break rock in water, so as to achieve the excavation effect. In the lateral direction of the energy-gathering explosive cover, when shock waves generated by explosives are transmitted outwards and meet the plastic foam layer, energy is dissipated and the plastic foam layer is broken, and the thickness and the strength of the plastic foam layer are controlled to reduce the residual water shock waves to a certain magnitude and reduce the damage of the residual water shock waves to aquatic organisms or adjacent buildings. The utility model discloses the special shape of well energy-gathering powder cover 1 can realize the directional breakage of rock mass under water in gathering the rock mass of vertical direction with the explosive energy.

An application example of the present invention for a shaped charge will now be provided.

In the embodiment, the energy-gathering medicine bag is applied to the excavation of the underwater rock foundation, the rock foundation to be excavated is 10m below the water surface, the lithology of the foundation is basalt, and the density of the rock mass is 2600kg/m³The acoustic velocity of the rock mass is 5000 m/s.

The specific implementation steps comprise:

(1) the energy-gathering medicine cover is made of duralumin, the height of the energy-gathering medicine cover is 350mm, the diameter of the top of the energy-gathering medicine cover is 240mm, and the diameter of the bottom of the energy-gathering medicine cover is 300 mm.

(2) Selecting high detonation velocity explosive which can ensure stable detonation performance under high temperature, high humidity and high pressure environment, loading the explosive into the energy-gathering explosive cover from the explosive loading hole, and sealing the explosive loading hole after explosive loading, wherein the diameter of the explosive is 250mm, and the height of the explosive is 200 mm.

(3) The energy-gathering medicine cover is wrapped with rigid plastic foam with the thickness of 20m, and the rigid plastic foam is wrapped on the outer side of the energy-gathering medicine cover in an annular mode. In order to improve the sealing performance of the package, a nylon cloth layer can be arranged between the plastic foam layer and the energy-gathering medicine cover.

(4) A cylindrical plastic barrel made of polyethylene is taken, and a circular hole with the diameter of 20mm is formed above the plastic barrel and used for laying a detonator lead. The plastic barrel is reversely sleeved outside the energy-gathering medicine cover wrapped by the plastic foam layer and used for wrapping and protecting the energy-gathering medicine cover. The plastic tub is preferably not shown in the drawings.

(5) Cylindrical counter weight of preparation concrete material, its bottom diameter 240mm, height 200mm, the circular hole of diameter 20mm is reserved equally in counter weight center for the detonator wire passes through. The counterweight weights are orderly stacked at the center of the top of the energy-gathering medicine cover.

(6) The energy-gathering explosive bag is placed to a target position by the steel wire rope 5, the detonator lead is ignited to carry out blasting, and after the blasting is finished, the flexible plastic foam material is directly floated on the water surface due to low density, so that the energy-gathering explosive bag can be directly salvaged, and the environmental pollution caused by secondary products can be reduced.

It is to be noted that the foregoing merely describes the basic principles, essential features and advantages of the invention, and does not limit the scope of the invention. The spirit and principle of the present invention should be covered by the protection scope of the appended claims by the modification, or equivalent replacement, improvement, etc.

Claims

1. An underwater blasting energy-gathering cartridge is characterized in that:

comprises an energy-gathering explosive cover, an explosive, a plastic foam layer and a counterweight;

the energy-gathering medicine cover main body is in a round table shape with a narrow top and a wide bottom, and the bottom of the energy-gathering medicine cover main body is partially or completely protruded inwards;

the explosive is filled in the energy-gathering explosive cover;

the plastic foam layer wraps the outer side of the energy-gathering medicine cover;

the counterweight is placed at the top of the energy-gathering medicine cover;

the top of the counterweight and the energy-gathering explosive cover is provided with a hole for laying detonator leads.

2. The underwater explosive shaped charge of claim 1, wherein:

the inner bulge at the bottom of the energy-gathering medicine cover is in an arch shape, a cone shape, a segment shape or a bell shape.

3. The underwater explosive shaped charge of claim 1, wherein:

the center line of the inner bulge at the bottom of the energy-gathering medicine cover is superposed with the center line of the energy-gathering medicine cover main body.

4. The underwater explosive shaped charge of claim 1, wherein:

the energy-gathering medicine cover is made of metal.

5. The underwater explosive shaped charge of claim 1, wherein:

the explosive is a high-pressure waterproof explosive, and the dosage of the explosive is not more than 90% of the capacity of the energy-gathering explosive cover.

6. The underwater explosive shaped charge of claim 1, wherein:

the thickness of the plastic foam layer is 20m-40cm, the compressive strength of the plastic foam layer is not lower than 5MPa, and the density of the plastic foam layer is greater than that of the aqueous medium.

7. The underwater explosive shaped charge of claim 1, wherein:

the counterweight is concrete.

8. The underwater explosive shaped charge of claim 1, wherein:

the center line of the counterweight coincides with the center line of the energy-gathering medicine cover.

9. The underwater explosive shaped charge of claim 1, wherein:

and a nylon cloth layer is arranged between the energy-gathering medicine cover and the plastic foam layer.

10. The underwater explosive shaped charge of claim 1, wherein:

the energy-gathering medicine cover is sleeved outside the plastic foam layer, and the counterweight is placed at the top of the plastic barrel; the top of the plastic barrel is provided with a wire for arranging a detonator.