Damping protection device for underwater blasting damping hole

Abstract

The utility model discloses a damping protection device for an underwater blasting damping hole, which comprises a device body placed in the damping hole, and the device body comprises a first powder chamber, a second powder chamber detachably connected to the inside of the first powder chamber, a second sealing cover connected to the top of the second powder chamber in a buckling manner, and a first sealing cover connected to the top of the first powder chamber in a buckling manner; a first detonating cavity and a second detonating cavity are formed in the center of the first sealing cover and the center of the second sealing cover respectively, the lower portion of the first detonating cavity is arranged in the second detonating cavity in a sleeved mode, and an annular first protrusion is arranged on the upper portion of the first detonating cavity. The second powder chamber is filled with a gas generating substance, and the second powder chamber is filled with a catalytic heating substance. The gas generating device is simple in structure, the first powder chamber and the second powder chamber are arranged to be used for containing gas generating substances and catalytic heating substances, it is guaranteed that a large amount of gas is generated, the gas generating speed is increased, gas forms bubble columns in water, and the purpose of weakening underwater blasting seismic waves and water hammer waves is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater blasting auxiliary devices, in particular to a shock-absorbing and protective device for underwater blasting vibration-absorbing holes. Background Art

[0002] In the process of dredging waterways and building ports and docks, underwater drilling and blasting is often used to break and excavate underwater rocks. In this process, part of the energy generated by the blasting is used to break the rocks, and the other part will propagate in the bedrock and water in the form of seismic waves and water shock waves, causing damage to distant rock masses and structures.

[0003] In order to reduce the impact of seismic waves and water hammer waves on the surrounding environment and structures during underwater blasting, two protective measures, vibration reduction holes and bubble curtains, are often used in engineering construction to weaken seismic waves and water hammer waves. However, in underwater blasting construction, the underwater vibration reduction holes are filled with water, which will reduce their protective ability, and the bubble curtain will also have problems with the placement and fixing of the underwater jet pipe, making it difficult to form a stable gas curtain, reducing the effectiveness of the bubble curtain.

[0004] Therefore, we propose a device for continuously generating gas in underwater blasting vibration reduction holes to achieve the purpose of weakening underwater blasting seismic waves and water hammer waves. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the utility model provides a shock-absorbing and protective device for underwater blasting vibration-absorbing holes. The device has a simple structure and ensures the generation of a large amount of gas and accelerates the speed of gas generation by arranging a first chamber and a second chamber for placing gas generating substances and catalytic heating substances, so as to form a bubble column in the water to achieve the purpose of weakening underwater blasting seismic waves and water shock waves.

[0006] The technical solution provided by the utility model is as follows:

[0007] A shock-absorbing and protective device for an underwater blasting vibration-absorbing hole comprises a device body placed in the vibration-absorbing hole, wherein the vibration-absorbing hole is arranged in the bedrock underwater, the device body comprises a first chamber, a second chamber detachably connected to the inside of the first chamber by a connecting piece, a second cover snap-connected to the top of the second chamber, and a first cover snap-connected to the top of the first chamber; a first detonation chamber and a second detonation chamber are respectively opened at the center of the first cover and the second cover, the lower part of the first detonation chamber is sleeved inside the second detonation chamber, and the upper part of the first detonation chamber is provided with a first annular protrusion; the second chamber is filled with a gas generating substance, and the second chamber is filled with a catalytic heating substance.

[0008] Preferably, the connecting member includes a protrusion respectively arranged on the bottom of the outer side of the first medicine chamber and an annular groove on the bottom of the second medicine chamber, and the protrusion is clamped in the annular groove.

[0009] Preferably, the bump includes more than four bump units that are separately arranged.

[0010] Preferably, second protrusions are arranged around the upper outer sides of the first medicine chamber and the second medicine chamber, and concave hooks matching with the second protrusions are arranged around the lower inner sides of the first cover and the second cover, and the concave hooks are snapped into the second protrusions.

[0011] Preferably, a plurality of tether rings are symmetrically arranged on the upper surface of the first cover, and each of the tether rings is integrally formed with the first cover.

[0012] Preferably, the tether ring is arranged in an inverted concave shape.

[0013] Preferably, the top ends of the first detonation chamber and the second detonation chamber are both arranged in a concave shape, and the middle parts thereof are both arranged in a cylindrical shape.

[0014] Preferably, the length of the second detonation chamber is greater than or equal to the length of the first detonation chamber.

[0015] Preferably, the gas generating substance is a mixture of citric acid and sodium bicarbonate powder; and the catalytic heating substance is calcium oxide powder.

[0016] The beneficial effects of the utility model are:

[0017] 1) The second chamber and the first chamber are respectively used to fill the gas generating substance and the catalytic heating substance, so as to ensure the generation of a large amount of gas and accelerate the speed of gas generation, so that the gas forms a bubble column in the water to achieve the purpose of weakening the underwater blasting seismic wave and water shock wave;

[0018] 2) The first detonation chamber is provided for subsequent placement of the blasting device; the first detonation chamber is provided to support the first detonation chamber;

[0019] 3) The provided protrusion and annular groove facilitate the connection between the bottom of the first chamber and the bottom of the second chamber;

[0020] 4) The tether ring is provided to facilitate the hanging of the device body by thin rope, and the device body can be quickly placed into the vibration reduction hole in the water;

[0021] 5) The first annular protrusion is provided to prevent the blasting device entering the first detonation chamber from falling out during the hanging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 yes Figure 1 Schematic diagram of the explosion structure;

[0024] Figure 3 It is a structural schematic diagram of the first medicine chamber in the utility model;

[0025] Figure 4 It is a structural schematic diagram of the second medicine chamber in the utility model;

[0026] Figure 5 It is a structural schematic diagram of the first cover and the second cover in the utility model;

[0027] Figure 6 yes Figure 1 Schematic diagram of the plane structure;

[0028] Figure 7 yes Figure 6 Schematic diagram of the structure of the local A in the middle;

[0029] Figure 8 It is a structural schematic diagram of the connecting piece in the utility model;

[0030] Fig. 9 yes Figure 6 Schematic diagram of the three-dimensional structure of part B in the middle.

[0031] In the figure: 1. first chamber; 2. second chamber; 3. first cover; 301. first detonation chamber; 302. tether ring; 303. first protrusion; 4. second cover; 401. second detonation chamber; 5. connecting piece; 501. bump; 502. annular groove; 6. second protrusion; 7. concave hook; 8. gas generating substance; 9. catalytic heating substance. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0033] It should be noted that in the description of the present invention, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Example

[0035] like Figures 1 to 9As shown, a shock-absorbing and protective device for underwater blasting vibration-absorbing holes comprises a device body placed in the vibration-absorbing hole, wherein the vibration-absorbing hole is arranged in the bedrock underwater, the device body comprises a first chamber 1, a second chamber 2 detachably connected to the inside of the first chamber 1 through a connector 5, a second cover 4 snap-connected to the top of the second chamber 2, and a first cover 3 snap-connected to the top of the first chamber 1; a first detonation cavity 301 and a second detonation cavity 401 are respectively opened at the center of the first cover 3 and the second cover 4, the lower part of the first detonation cavity 301 is sleeved inside the second detonation cavity 401, and the upper part of the first detonation cavity 301 is provided with a first annular protrusion 303; the second chamber 2 is filled with a gas generating substance 8, and the second chamber 2 is filled with a catalytic heating substance 9, wherein the gas generating substance 8 is a mixture of citric acid and sodium bicarbonate powder; the catalytic heating substance 9 is calcium oxide powder, which has low cost and good reaction effect with water.

[0036] As a further technical solution of this embodiment, the connecting member 5 includes a protrusion 501 respectively arranged on the outer bottom of the first medicine chamber 1 and an annular groove 502 on the inner bottom of the second medicine chamber 2, and the protrusion 501 is clamped in the annular groove 502, wherein the protrusion 501 includes more than four separately arranged protrusion 501 units, thereby realizing the connection and fixation of the first medicine chamber 1 and the second medicine chamber 2.

[0037] As a further technical solution of the present embodiment, second protrusions 6 are arranged around the upper outer sides of the first medicine chamber 1 and the second medicine chamber 2, and concave hooks 7 matched with the second protrusions 6 are arranged around the lower inner sides of the first cover 3 and the second cover 4. The concave hooks 7 are snapped into the second protrusions 6 to facilitate the installation and removal of the first cover 3 and the second cover 4.

[0038] As a further technical solution of this embodiment, a plurality of tether rings 302 are symmetrically arranged on the upper surface of the first cover 3. Each tether ring 302 is arranged in an inverted concave shape and is integrally formed with the first cover 3 to prevent the tether ring 302 from being worn out due to repeated lifting and lowering, thereby extending its service life.

[0039] As a further technical solution of this embodiment, the top ends of the first detonation chamber 301 and the second detonation chamber 401 are both arranged to be concave, and the middle parts thereof are both arranged to be cylindrical, so as to facilitate the loading of the blasting device.

[0040] As a further technical solution of this embodiment, the length of the second detonation chamber 401 is greater than or equal to the length of the first detonation chamber 301 , so as to facilitate the first detonation chamber 301 to be placed in the second detonation chamber 401 .

[0041] The working principle of this utility model:

[0042] The convex block 501 at the bottom of the outer side of the second chamber 2 of the utility model is clamped in the annular groove 502 at the bottom of the inner side of the first chamber 1, so that the bottom of the first chamber 1 and the second chamber 2 are connected and fixed; then the second detonation cavity 401 is aligned with the interior of the second chamber 2 and inserted, and is buckled to the second protrusion 6 on the second chamber 2 through the concave hook 7 on the second cover 4; the first detonation cavity 301 of the first chamber 1 is aligned with the second detonation cavity 401 and inserted, and then is buckled to the second protrusion 6 on the first chamber 1 through the concave hook 7 on the first cover 3, so as to realize the installation of the device body;

[0043] In actual operation, after the device body is installed, a blasting device, i.e., a digital detonator, is placed in the first detonation chamber 301, and the device body is placed in the vibration-damping hole inside the bedrock through a thin rope passing through the tether ring 302. After the placement is completed, the device body is detonated by the digital detonator. After the device body explodes, the gas-generating substance 8 in the first chamber 1 is released and contacts with water. The gas-generating substance 8 reacts with water to continuously generate a large number of bubbles. The catalytic heating substance 9 in the second chamber 2 further accelerates the speed of bubble generation, thereby expelling the water in the vibration-damping hole and rising to the water above the vibration-damping hole to form a bubble column. Further, with the cooperation of multiple rows of plum blossom-shaped vibration-damping holes, a bubble curtain is formed in the water above the vibration-damping hole, thereby achieving the weakening of underwater blasting shock waves by the vibration-damping holes and bubble curtains based on air coupling.

[0044] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the principles and essence of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A shock-absorbing protection device for an underwater blasting vibration-absorbing hole, comprising a device body placed in the vibration-absorbing hole, wherein the vibration-absorbing hole is arranged in the bedrock underwater, and characterized in that: The device body comprises a first medicine chamber (1), a second medicine chamber (2) detachably connected to the inside of the first medicine chamber (1) via a connecting piece (5), a second cover (4) snap-fitted to the top of the second medicine chamber (2), and a first cover (3) snap-fitted to the top of the first medicine chamber (1); A first detonation chamber (301) and a second detonation chamber (401) are respectively provided at the center of the first cover (3) and the second cover (4); the lower part of the first detonation chamber (301) is sleeved inside the second detonation chamber (401); and the upper part of the first detonation chamber (301) is provided with a first annular protrusion (303); The second chamber (2) is filled with a gas generating substance (8), and the second chamber (2) is filled with a catalytic heating substance (9).

2. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1, characterized in that: The connecting member (5) comprises a protrusion (501) respectively arranged on the outer bottom of the first medicine chamber (1) and an annular groove (502) on the inner bottom of the second medicine chamber (2), and the protrusion (501) is clamped in the annular groove (502).

3. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 2, characterized in that: The convex block (501) comprises a plurality of convex block (501) units which are separately arranged.

4. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1, characterized in that: Second protrusions (6) are arranged around the upper outer sides of the first medicine chamber (1) and the second medicine chamber (2), and concave hooks (7) matching the second protrusions (6) are arranged around the lower inner sides of the first cover (3) and the second cover (4), and the concave hooks (7) are snapped onto the second protrusions (6).

5. The shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1, characterized in that: A plurality of tether rings (302) are symmetrically arranged on the upper surface of the first cover (3), and each of the tether rings (302) is integrally formed with the first cover (3).

6. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 5, characterized in that: The tether ring (302) is configured in an inverted concave shape.

7. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1, characterized in that: The top ends of the first detonation chamber (301) and the second detonation chamber (401) are both arranged in a concave shape, and the middle parts thereof are both arranged in a cylindrical shape.

8. A shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1 or 7, characterized in that: The length of the second detonation chamber (401) is greater than or equal to the length of the first detonation chamber (301).

9. The shock-absorbing and protective device for underwater blasting vibration-absorbing holes according to claim 1, characterized in that: The gas generating substance (8) is a mixture of citric acid and sodium bicarbonate powder; and the catalytic heating substance (9) is calcium oxide powder.

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