A combined protective device of bubble curtain and vibration reduction hole for underwater drilling and blasting

Abstract

The present invention belongs to the technical field of underwater drilling and blasting, and in particular, is a combined protective device of a bubble curtain and a vibration reduction hole for underwater drilling and blasting, comprising a bedrock, an air outlet and a fixed rope, wherein a vibration reduction hole is arranged inside the bedrock, a clamp is fixed at the lower left side of the air outlet, a counterweight is arranged below the fixed rope, a first leather hose is connected above the bubble curtain tube, and a connecting mechanism is installed above the first leather hose. The combined protective device of a bubble curtain and a vibration reduction hole for underwater drilling and blasting removes water from the vibration reduction hole through bubbles generated by the bubble curtain tube, thereby solving the problem that water in the hole cannot be removed, and enhancing the shock-absorbing effect of the vibration reduction hole. There is no need to set up multiple rows of vibration reduction holes, thereby reducing costs. A large number of bubbles are removed from the orifices of multiple vibration reduction holes, thereby forming a stable bubble curtain, which has a better weakening effect on underwater shock waves than traditional bubble curtains, and multiple bubble curtain tubes reduce the failure rate.

Description

Technical Field

[0001] The invention relates to the technical field of underwater drilling and blasting, in particular to a bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting. Background Art

[0002] Underwater drilling and blasting is the most effective means of excavating and crushing underwater rock masses. It has become an important construction method for comprehensive waterway regulation, port and wharf construction, and underwater foundation pit excavation. In underwater drilling and blasting projects, after the explosives explode in the underwater blast holes, a large amount of energy is released and the rocks are crushed. At the same time, seismic waves are formed in the rock formations and underwater shock waves are formed in the waters. Both pose a great threat to the environment around the blasting area.

[0003] In order to reduce the harmful effects of blasting, the project uses bubble curtains as a control measure to weaken underwater shock waves, and vibration reduction holes as a control measure to reduce seismic waves. A jet tube is set up underwater to continuously generate a large number of bubbles. The bubbles move from the bottom of the water to the surface to form a gas curtain, which plays a role in weakening underwater shock waves. Problems with the placement and fixation of the underwater jet tubes make it difficult to form a stable gas curtain, reducing the effectiveness of the bubble curtain. A certain number of holes are drilled in the bedrock using a drilling rig to reduce the intensity of seismic waves generated by the blasting. The vibration reduction holes in the underwater bedrock are filled with water, making the effect of the vibration reduction holes poor. The bubble curtain is used in conjunction with the vibration reduction holes, and the bubble curtain is used to remove the air in the vibration reduction holes. The vibration reduction holes can provide a fixed position for the bubble tubes, effectively avoiding the defects of the two.

[0004] Based on the above situation, the present invention designs a combined protection device of bubble curtain and vibration reduction hole for underwater blasting, which can simultaneously improve the effects of vibration reduction hole and bubble curtain, and achieve the purpose of reducing underwater drilling and blasting seismic waves and underwater shock waves. Summary of the invention

[0005] The purpose of the present invention is to provide a bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting, so as to solve the problem in the underwater drilling and blasting project proposed in the above background technology that after the explosives explode in the underwater blast hole, a large amount of energy is released and the rock is broken, and at the same time, seismic waves are formed in the rock formation and underwater shock waves are formed in the water area, both of which pose a great threat to the environment around the blasting area.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting, comprising a bedrock, an air outlet and a fixing rope, wherein a vibration reduction hole is arranged inside the bedrock, and a bubble curtain tube is installed inside the vibration reduction hole, a clamping ring is fixed at the lower left side of the air outlet, and the air outlet is located on the outer surface of the bubble curtain tube, a counterweight is arranged below the fixing rope, and the fixing rope is located inside the clamping ring, a first leather hose is connected above the bubble curtain tube, and a connecting mechanism is installed above the first leather hose.

[0007] Preferably, the vibration-damping holes are equidistantly distributed in the horizontal direction with respect to the bedrock, and the diameter of the vibration-damping holes is 200 mm, and the vertical length of the vibration-damping holes is 5 m, and the spacing between the vibration-damping holes is 0.5 m.

[0008] Preferably, the diameter of the bubble curtain tube is 80 mm, and the vertical length of the bubble curtain tube is 2 m, and the counterweight block is fixedly connected to the bubble curtain tube, and the counterweight block has a conical structure that is wide at the top and narrow at the bottom.

[0009] Preferably, the bubble curtain tubes are equidistantly distributed in the horizontal direction of the bedrock, and the fixing ropes are fixedly connected to the bubble curtain tubes via clamps.

[0010] Preferably, the connecting mechanism comprises an extension tube, a main tube, an exhaust hole and a second leather tube, and the main tube is fixed above the extension tube, the outer surface of the main tube is provided with an exhaust hole, and the second leather tube is arranged on the left side of the main tube.

[0011] Preferably, the second leather tubes are symmetrical with respect to the vertical center line of the main tube, and the main tube forms a flow structure with the bubble curtain tube through the cooperation between the extension tube and the first leather tube.

[0012] Preferably, the specific steps of using the device are as follows:

[0013] 1) Use the drilling rig on the drilling and blasting ship to drill vibration reduction holes in the underwater rock layer 5m in front of the protected underwater building (structure). The hole diameter is 200mm, the hole depth is 5m, and the spacing between the vibration reduction holes is about 0.5m. The number of vibration reduction holes is controlled according to the length of the structure. For strip-type buildings (structures), such as shore houses, bank slopes, pontoons, etc., the vibration reduction holes are arranged horizontally; for column-type buildings (structures), such as bridge piers, lighthouses, etc., the vibration reduction holes are arranged in an arc shape;

[0014] 2) After drilling the vibration reduction hole in the underwater rock formation, use the drilling rig casing to insert the bubble curtain tube into the bottom of the vibration reduction hole. The bubble curtain tube has a diameter of 80 mm and a length of 2 m. The bottom of the bubble curtain tube is conical and counterweighted to ensure that it is inserted into the rock mass to ensure its stability. The bubble curtain tube is hollow in the middle, with air outlet holes distributed on the side walls and a leather tube connected to the upper part. After all the vibration reduction holes complete the above steps, connect their respective leather tubes to the main air curtain bubble tube. Each bubble curtain tube is connected to the drilling and blasting ship by a rope, so that the bubble curtain tube can be recycled and reused;

[0015] 3) Connect the bubble curtain tubes in each vibration reduction hole to the main air curtain bubble tube through a leather tube. The diameter of the bubble curtain tube is 200 mm and the length is 3 m. The main air curtain bubble tube is placed above the underwater rock surface, and air outlet holes are distributed on one side of the main air curtain bubble tube.

[0016] Preferably, the device has the following characteristics:

[0017] 1) The bubbles in the bubble curtain tube remove the water in the vibration reduction hole, solving the problem that the water in the hole cannot be removed, enhancing the vibration reduction effect of the vibration reduction hole, eliminating the need to set up multiple rows of vibration reduction holes, and reducing costs;

[0018] 2) A large number of bubbles are discharged from the openings of multiple vibration-reducing holes, forming a stable bubble curtain, which has a better effect on weakening underwater shock waves than traditional bubble curtains;

[0019] 3) Multiple bubble curtain tubes reduce the failure rate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting removes water from the vibration reduction hole through bubbles generated by the bubble curtain tube, solves the problem that water in the hole cannot be removed, strengthens the shock reduction effect of the vibration reduction hole, does not need to set up multiple rows of vibration reduction holes, reduces costs, and removes a large number of bubbles from the orifices of multiple vibration reduction holes to form a stable bubble curtain. Compared with the traditional bubble curtain, it has a better effect on weakening underwater shock waves. Multiple bubble curtain tubes reduce the failure rate;

[0022] 2. The bubble curtain and vibration reduction hole combined protection device of the underwater drilling and blasting reduces the seismic waves generated during blasting through the vibration reduction holes, thereby enhancing the impact of underwater drilling and blasting on the surroundings. The counterweight blocks are inserted into the bedrock to ensure the stability of the bubble curtain tube in the vibration reduction hole so that the bubble curtain tube will not be offset in position. Each bubble curtain tube is connected to the drilling and blasting ship through a fixed rope, so that the bubble curtain tube can be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view structural schematic diagram of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection mechanism structure of the present invention;

[0025] Figure 3 For the present invention Figure 1 Enlarged structural diagram at A in the middle.

[0026] In the figure: 1, bedrock; 2, vibration reduction hole; 3, bubble curtain tube; 4, air outlet; 5, clamp ring 6, fixing rope; 7, counterweight; 8, first leather hose; 9, connecting mechanism; 901, extension tube; 902, main tube; 903, exhaust hole; 904, second leather hose. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-3 The present invention provides a technical solution: a bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting, comprising a bedrock 1, an air outlet 4 and a fixing rope 6, a vibration reduction hole 2 is arranged inside the bedrock 1, and a bubble curtain tube 3 is installed inside the vibration reduction hole 2, a clamping ring 5 is fixed at the lower left side of the air outlet 4, and the air outlet 4 is located on the outer surface of the bubble curtain tube 3, a counterweight block 7 is arranged below the fixing rope 6, and the fixing rope 6 is located inside the clamping ring 5, a first leather tube 8 is connected to the top of the bubble curtain tube 3, and a connecting mechanism 9 is installed above the first leather tube 8;

[0029] Furthermore, the vibration reduction holes 2 are equidistantly distributed in the horizontal direction with respect to the bedrock 1, and the diameter of the vibration reduction holes 2 is 200 mm, and the vertical length of the vibration reduction holes 2 is 5 m, and the spacing between the vibration reduction holes 2 is 0.5 m. The vibration reduction holes 2 can reduce the seismic waves generated during blasting, thereby improving the impact of underwater drilling and blasting on the surroundings;

[0030] Furthermore, the diameter of the bubble curtain tube 3 is 80 mm, and the vertical length of the bubble curtain tube is 2 m, and the counterweight block 7 is fixedly connected to the bubble curtain tube 3, and the counterweight block 7 is in a tapered structure that is wide at the top and narrow at the bottom. The counterweight block 7 is inserted into the bedrock 1 to ensure the stability of the bubble curtain tube 3 in the vibration reduction hole 2, so that the bubble curtain tube 3 will not be offset in position;

[0031] Furthermore, the bubble curtain tubes 3 are equidistantly distributed in the horizontal direction of the bedrock 1, and the fixing ropes 6 are fixedly connected to the bubble curtain tubes 6 through the clamp rings 5, and each bubble curtain tube 3 is connected to the drilling and blasting ship through the fixing ropes 6, so that the bubble curtain tubes 3 can be recycled and reused;

[0032] Furthermore, the connecting mechanism 9 includes an extension tube 901, a main tube 902, an exhaust hole 903 and a second hose 904, and the main tube 902 is fixed above the extension tube 901, the exhaust hole 903 is provided on the outer surface of the main tube 902, and the second hose 904 is arranged on the left side of the main tube 902;

[0033] Furthermore, the second leather tubes 904 are symmetrical about the vertical center line of the main tube 902, and the main tube 902 forms a flow structure with the bubble curtain tube 3 through the cooperation between the extension tube 901 and the first leather tube 8. The bubble curtain tube 3 in each vibration reduction hole 2 is connected to the main tube 902 through the first leather tube 8. The main tube 902 has a diameter of 200 mm and a length of 3 m. The main tube 3 is placed above the underwater rock surface, and exhaust holes 903 are distributed on one side of the main tube 3.

[0034] Furthermore, the specific steps of using the device are as follows:

[0035] 1) Use the drilling rig on the drilling and blasting ship to drill vibration reduction holes in the underwater rock layer 5m in front of the protected underwater building (structure). The hole diameter is 200mm, the hole depth is 5m, and the spacing between the vibration reduction holes is about 0.5m. The number of vibration reduction holes is controlled according to the length of the structure. For strip-type buildings (structures), such as shore houses, bank slopes, pontoons, etc., the vibration reduction holes are arranged horizontally; for column-type buildings (structures), such as bridge piers, lighthouses, etc., the vibration reduction holes are arranged in an arc shape;

[0036] 2) After drilling the vibration reduction hole in the underwater rock formation, use the drilling rig casing to insert the bubble curtain tube into the bottom of the vibration reduction hole. The bubble curtain tube has a diameter of 80 mm and a length of 2 m. The bottom of the bubble curtain tube is conical and counterweighted to ensure that it is inserted into the rock mass to ensure its stability. The bubble curtain tube is hollow in the middle, with air outlet holes distributed on the side walls and a leather tube connected to the upper part. After all the vibration reduction holes complete the above steps, connect their respective leather tubes to the main air curtain bubble tube. Each bubble curtain tube is connected to the drilling and blasting ship by a rope, so that the bubble curtain tube can be recycled and reused;

[0037] 3) Connect the bubble curtain tubes in each vibration reduction hole to the main air curtain bubble tube through a leather tube. The diameter of the bubble curtain tube is 200 mm and the length is 3 m. The main air curtain bubble tube is placed above the underwater rock surface, and air outlet holes are distributed on one side of the main air curtain bubble tube.

[0038] Furthermore, the device has the following characteristics:

[0039] 1) The bubbles in the bubble curtain tube remove the water in the vibration reduction hole, solving the problem that the water in the hole cannot be removed, enhancing the vibration reduction effect of the vibration reduction hole, eliminating the need to set up multiple rows of vibration reduction holes, and reducing costs;

[0040] 2) A large number of bubbles are discharged from the openings of multiple vibration-reducing holes, forming a stable bubble curtain, which has a better effect on weakening underwater shock waves than traditional bubble curtains;

[0041] 3) Multiple bubble curtain tubes reduce the failure rate.

[0042] The bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting of the present invention has the following advantages:

[0043] 1. The bubble curtain and vibration reduction hole combined protection device of underwater drilling and blasting. The bubbles in the bubble curtain tube remove the water in the vibration reduction hole, solving the problem that the water in the hole cannot be removed, and enhancing the shock reduction effect of the vibration reduction hole. There is no need to set up multiple rows of vibration reduction holes, which reduces costs. A large number of bubbles are removed from the orifices of multiple vibration reduction holes, forming a stable bubble curtain. Compared with traditional bubble curtains, it has a better effect on weakening underwater shock waves. Multiple bubble curtain tubes reduce the failure rate.

[0044] 2. The bubble curtain and vibration reduction hole combined protection device of the underwater drilling and blasting reduces the seismic waves generated during blasting through the vibration reduction holes, thereby enhancing the impact of underwater drilling and blasting on the surroundings. The counterweight blocks are inserted into the bedrock to ensure the stability of the bubble curtain tube in the vibration reduction hole so that the bubble curtain tube will not be offset in position. Each bubble curtain tube is connected to the drilling and blasting ship through a fixed rope, so that the bubble curtain tube can be recycled and reused.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting, comprising bedrock (1), an air outlet hole (4) and a fixing rope (6), characterized in that: A vibration reduction hole (2) is provided inside the bedrock (1), and a bubble curtain tube (3) is installed inside the vibration reduction hole (2); a clamping ring (5) is fixed below the left side of the air outlet hole (4), and the air outlet hole (4) is located on the outer surface of the bubble curtain tube (3); a counterweight (7) is arranged below the fixing rope (6), and the fixing rope (6) is located inside the clamping ring (5); a first leather tube (8) is connected above the bubble curtain tube (3), and a connecting mechanism (9) is installed above the first leather tube (8); The bubble curtain tubes (3) are equidistantly distributed along the horizontal direction of the bedrock (1), and the fixing ropes (6) are fixedly connected to the bubble curtain tubes (3) via the clamping rings (5); The connecting mechanism (9) comprises an extension tube (901), a main tube (902), an exhaust hole (903) and a second leather tube (904), wherein the main tube (902) is fixed above the extension tube (901), the exhaust hole (903) is arranged on the outer surface of the main tube (902), and the second leather tube (904) is arranged on the left side of the main tube (902); The second leather tubes (904) are symmetrical with respect to the vertical center line of the main tube (902), and the main tube (902) forms a flow structure with the bubble curtain tube (3) through the cooperation between the extension tube (901) and the first leather tube (8).

2. The bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting according to claim 1, characterized in that: The vibration-damping holes (2) are equidistantly distributed in the horizontal direction of the bedrock (1), the diameter of the vibration-damping holes (2) is 200 mm, the vertical length of the vibration-damping holes (2) is 5 m, and the spacing between the vibration-damping holes (2) is 0.5 m.

3. The bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting according to claim 1, characterized in that: The diameter of the bubble curtain tube (3) is 80 mm, and the vertical length of the bubble curtain tube (3) is 2 m. The counterweight block (7) is fixedly connected to the bubble curtain tube (3), and the counterweight block (7) is in a conical structure that is wide at the top and narrow at the bottom.

4. A method for using the bubble curtain and vibration reduction hole combined protection device for underwater drilling and blasting according to any one of claims 1 to 3, characterized in that: The specific steps of using the device are as follows: 1) Use the drilling rig on the drilling and blasting ship to drill vibration reduction holes in the underwater rock formation 5m in front of the protected underwater building or underwater structure. The hole diameter is 200mm, the hole depth is 5m, and the spacing between the vibration reduction holes is about 0.5m. The number of vibration reduction holes is controlled according to the length of the structure. For strip-type buildings or structures, the vibration reduction holes are arranged horizontally; for column-type buildings or column-type structures, the vibration reduction holes are arranged in an arc shape; 2) After drilling the vibration reduction hole in the underwater rock formation, use the drilling rig casing to insert the bubble curtain tube into the bottom of the vibration reduction hole. The bubble curtain tube has a diameter of 80 mm and a length of 2 m. The bottom of the bubble curtain tube is conical and counterweighted to ensure that it is inserted into the rock mass to ensure its stability. The bubble curtain tube is hollow in the middle, with air outlet holes distributed on the side walls and a leather tube connected to the upper part. After all the vibration reduction holes complete the above steps, connect their respective leather tubes to the main air curtain bubble tube. Each bubble curtain tube is connected to the drilling and blasting ship by a rope, so that the bubble curtain tube can be recycled and reused; 3) Connect the bubble curtain tubes in each vibration reduction hole to the main air curtain bubble tube through a leather tube. The diameter of the bubble curtain tube is 200 mm and the length is 3 m. The main air curtain bubble tube is placed above the underwater rock surface, and air outlet holes are distributed on one side of the main air curtain bubble tube.

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