Blasting damage test system for shallow water area

Abstract

The invention discloses a shallow water area blasting damage test system, and belongs to the technical field of blasting damage tests. Comprising a blasting test pool; the positioning part comprises a first floating body, a second floating body and a positioning rope; the targets are filled with explosive loading parts or counterweight parts, a sympathetic detonation test is carried out when the targets are filled with the explosive loading parts, and a non-sympathetic detonation test is carried out when the targets are filled with the counterweight parts; a charging structure; a plurality of first data acquisition sensors; a plurality of second data acquisition sensors; and the control unit is connected with the charging structure, the first data acquisition sensor and the second data acquisition sensor, and is used for controlling the charging structure to blast in water and collecting data acquired by the first data acquisition sensor and the second data acquisition sensor. Through the sensors arranged in water and the target, data generated by each blasting test can be collected, and the damage effect of different intervals and explosive charges on the chemical reactive target in shallow water can be judged.

Description

Technical Field

[0001] The present invention belongs to the technical field of blasting damage tests, and particularly relates to a blasting damage test system for shallow water areas. Background Art

[0002] The damage test of blasting in shallow water areas can explore the characteristics of shallow water blasting and guide engineering practices. There are significant differences between shallow water area blasting and deep water or land blasting in aspects such as energy propagation, shock wave characteristics, and bubble effects. Through the damage test, the unique mechanism and characteristics of shallow water blasting can be deeply understood, providing an experimental basis for relevant theoretical research. Shallow water area blasting has wide applications in engineering fields such as port construction, waterway dredging, and underwater structure demolition. The results of the damage test can provide technical guidance and parameter optimization suggestions for these engineering practices, ensuring the safety and economy of the projects.

[0003] Blasting in shallow water areas may cause damage to the surrounding environment and facilities, and it is necessary to evaluate the damage effects under different blasting parameters and conditions through blasting tests. However, there is a lack of a blasting test system for shallow water areas at the present stage. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a blasting damage test system for shallow water areas, which can collect the data generated by each blasting test and be used to judge the damage effects of different spacings and charge amounts on chemically reactive targets in shallow water.

[0005] The present invention provides the following technical solutions: Provide a blasting damage test system for shallow water areas, including a blasting test pool for storing water; positioning components, including a first floating body, a second floating body, and a positioning rope, the positioning rope connecting the first floating body and the second floating body to fix the first floating body and the second floating body at a preset position, and the first floating body and the second floating body floating on the water surface in sequence; a plurality of target markers, each target marker being connected to the first floating body and located below the first floating body, and the interior of the target marker being filled with a charge member or a counterweight member. When the interior of the target marker is filled with a charge member, a sympathetic detonation test is carried out, and when the interior of the target marker is filled with a counterweight member, a non-sympathetic detonation test is carried out; a charging structure, connected to the second floating body and located below the second floating body; a plurality of first data acquisition sensors, arranged at target positions on the periphery of the charging structure for collecting pressure data at the target positions; a plurality of second data acquisition sensors, arranged on the surface of the target marker for collecting surface pressure, strain, and acceleration data of the target marker; a control unit, connected to the charging structure, the first data acquisition sensors, and the second data acquisition sensors, for controlling the blasting of the charging structure in water and collecting the acquisition data of the first data acquisition sensors and the second data acquisition sensors.

[0006] As an alternative technical solution of the present invention, the target includes a first target and a second target. The first target is filled with a charge member or a counterweight member inside, and the second target is filled with a counterweight member inside.

[0007] As an alternative technical solution of the present invention, the water level depth in the blasting test pool is 3 to 5 m.

[0008] As an alternative technical solution of the present invention, the depth of the charge structure from the water surface is not less than 2 m.

[0009] As an alternative technical solution of the present invention, in the sympathetic detonation test, the distance between the target and the charge structure is 50 to 150 mm, and the distance between the first data acquisition sensor and the charge structure is 6 to 8 m.

[0010] As an alternative technical solution of the present invention, in the non - sympathetic detonation test, a plurality of the targets are arranged on the periphery of the charge structure. The distance between one of the first data acquisition sensors and the charge structure is 3 m, and the remaining plurality of first data acquisition sensors respectively correspond to one target, and the distances from the corresponding first data acquisition sensors and the targets to the charge structure are equal.

[0011] As an alternative technical solution of the present invention, the first data acquisition sensor uses a pressure sensor.

[0012] As an alternative technical solution of the present invention, the second data acquisition sensor includes a wall pressure sensor, a strain sensor and an acceleration sensor. The wall pressure sensor is arranged at the mid - point of the detonation - facing surface of the target and at the junction of the detonation - facing surface and the non - detonation - facing surface. The strain sensor is arranged on the detonation - facing surface, the non - detonation - facing surface and at the junction of the detonation - facing surface and the non - detonation - facing surface of the target. The acceleration sensor is arranged on the upper end surface of the target, at the mid - point of the detonation - facing surface of the fuse and at the junction of the detonation - facing surface and the non - detonation - facing surface.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: A shallow - water area blasting damage test system provided by the present invention fixes the first floating body and the second floating body to a predetermined position on the water surface through positioning ropes. The target and the charge structure are both connected to the first floating body or the second floating body. And in the blasting test, the positioning ropes can ensure the stable positions of each floating body, which is beneficial for users to control the appropriate distances between each target and the charge structure according to the test requirements, and ensure the unity of multiple tests. Through the sensors arranged in the water and on the target, the data generated by each blasting test can be collected to help users judge the damage effects of different distances and charge amounts on chemically reactive targets in shallow water. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic structural diagram of the blasting test pool in the embodiment of the present invention; Figure 2 It is a schematic structural diagram of the shallow water area blasting damage test system in the embodiment of the present invention; Figure 3 It is a schematic layout position diagram of the sympathetic detonation test of the target in the embodiment of the present invention; Figure 4 It is a top view of the layout position of the non - sympathetic detonation test of the target in the embodiment of the present invention; Figure 5 It is a front view of the layout position of the non - sympathetic detonation test of the target in the embodiment of the present invention; Figure 6 It is a schematic diagram of the wall pressure sensor on the surface of the target in the embodiment of the present invention; Figure 7 It is a schematic diagram of the strain sensor on the surface of the target in the embodiment of the present invention; Figure 8 It is an unfolded view of the strain sensor on the surface of the target in the embodiment of the present invention; Figure 9 It is a schematic diagram of the acceleration sensor arranged on the surface of the target in the embodiment of the present invention.

[0015] In the figure, the markings are: 10, control unit; 11, detonation control component; 12, data acquisition component; 13, detonation cable; 14, data line; 100, blasting test pool; 21, first floating body; 22, second floating body; 23, positioning rope; 24, suspension rope; 30, target; 40, charge structure; 50, first data acquisition sensor; 60, second data acquisition sensor. Detailed implementation manners

[0016] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and cannot be used to limit the protection scope of the present invention.

[0017] Embodiment 1 This embodiment provides a shallow water area blasting damage test system. As Figure 1 and 2 shown, it includes: A blasting test pool 100 for storing water. In this embodiment, the blasting test pool 100 is configured to be circular with a diameter of 30 m, and the water depth in the blasting test pool 100 is 3 - 5 m.

[0018] A positioning component, including a first floating body 21, a second floating body 22 and a positioning rope 23. The positioning rope 23 connects the first floating body 21 and the second floating body 22, fixes the first floating body 21 and the second floating body 22 at a preset position, and the first floating body 21 and the second floating body 22 float on the water surface in sequence.

[0019] Furthermore, the positioning rope 23 is suspended above the water surface. Multiple marking points are provided on the surface of the positioning rope 23, and the distance between every two adjacent marking points is the same. The positioning rope 23 is distributed in a cross shape in the blasting test pool 100, and the free ends of the positioning rope 23 are fixed to the shore of the blasting test pool 100. The positioning rope 23 is formed by four ropes or two ropes to form a cross shape, and a knot is tied in the middle of the cross shape. The four ends of the positioning rope 23 are fixed on the shore, so that the middle of the positioning rope is in the middle position of the blasting test pool 100. In this way, the first floating body 21, the second floating body 22 and the sensors can all be arranged along the extension path of the positioning rope 23, so that each target 30, the charge structure 40 and the sensors are all in the preset positions. The marking points on the positioning rope 23 are in the form of knots. Through the marking points, the positions of each position of the positioning rope 23 relative to the midpoint of the positioning rope can be measured, which is beneficial to setting the target 30, the charge structure 40 and the sensors in the preset positions and keeping the distances between the components as ideal distances.

[0020] Furthermore, in this embodiment, the first floating body 21 includes a hollow plastic floating body, which is set in a cube shape, and direction marks are provided on four side surfaces. The second floating body 22 includes a foam floating body structure. The hollow plastic floating body has greater buoyancy and is beneficial to controlling the direction of the target 30 suspended below the first floating body 21 during layout. The second floating body 22 adopts a foam floating body structure, which is stronger and not easily damaged by the detonation effect of the charge structure 40.

[0021] Furthermore, a connecting ring for fixing the suspension rope 24 is provided at the edge of the first floating body 21. The suspension rope 24 can be tied to the connecting ring. After each blasting damage test, it is beneficial for the user to pull the suspension rope 24 to fish out the target 30 to observe the damage condition of the target 30.

[0022] A number of targets 30, each target 30 is connected to the first floating body 21 through a suspension rope 24 and is located below the first floating body 21. The target 30 is filled with a charge component or a counterweight component inside. The sympathetic detonation test is carried out when the target 30 is filled with a charge component, and the non-sympathetic detonation test is carried out when the target 30 is filled with a counterweight component.

[0023] Further, in this embodiment, the target 30 includes a first target and a second target. The outer shapes of the first target and the second target are cylindrical. The size of the first target is a diameter of 230 mm and a height of 763 mm, and the size of the second target is a diameter of 535 mm and a height of 1359 mm. The outer shells of the first target and the second target are made of steel, fiberglass or glass fiber. By setting the outer shells to various structures, different damage effects caused by explosives with different charges on shells of different materials can be obtained in the test. The interior of the first target is filled with a charge member or a counterweight member, and the interior of the second target is filled with a counterweight member. A fuse is provided on the outer shell of the target 30. By providing the fuse, it can be observed whether the fuse is damaged in the blasting test to judge the damage effect of the charge structure 40 on the target 30 during underwater blasting.

[0024] The charge structure 40 is connected to the second floating body 22 and is located below the second floating body 22. The depth of the charge structure 40 from the water surface is not less than 2 m.

[0025] A plurality of first data acquisition sensors 50 are arranged at target positions on the periphery of the charge structure 40 for acquiring pressure data at the target positions. The first data acquisition sensors 50 are connected to the positioning rope 23 through a suspension rope 24. The strength of the suspension rope 24 is greater than that of the positioning rope 23. Since the suspension rope 24 is closer to the charge structure 40 than the positioning rope 23, the strength requirement for the suspension rope 24 is higher. In this embodiment, the positioning rope 23 is made of hemp rope, nylon rope, etc., and the suspension rope 24 is made of steel wire rope.

[0026] Further, the first data acquisition sensor 50 is a pressure sensor.

[0027] A plurality of second data acquisition sensors 60 are arranged on the surface of the target 30 for acquiring surface pressure, strain and acceleration data of the target 30.

[0028] The control unit 10 is connected to the charge structure 40, the first data acquisition sensors 50 and the second data acquisition sensors 60, and is used for controlling the underwater blasting of the charge structure 40 and collecting the acquisition data of the first data acquisition sensors 50 and the second data acquisition sensors 60. In this embodiment, the control unit 10 includes a detonation control component 11 and a data acquisition component 12. The detonation control component 11 is connected to the charge structure 40 through a detonation cable 13, and the data acquisition component 12 is connected to the first data acquisition sensors 50 and the second data acquisition sensors 60 through data lines 14. The detonation control component 11 can remotely control the charge structure 40 to blast at an appropriate time. The influence of the shock wave generated after the blasting on the target 30 can be detected by the second data acquisition sensors 60 and transmitted to the data acquisition component 12 through the data line 14. The first data acquisition sensors 50 receive the shock wave of the charge structure 40 in water.

[0029] In the sympathetic detonation test, the distance between the target 30 and the charge structure 40 is 50 - 150 mm, and the distance between the first data acquisition sensor 50 and the charge structure 40 is 6 - 8 m. As Figure 3 shown, when charging the target 30, a sympathetic detonation test is carried out. The first data acquisition sensor 50 is set at positions 6 m and 8 m away from the charge structure 40, and 2 m away from the water surface, to collect the pressure signal after the charge structure 40 explodes. Through the sympathetic detonation test, the relationship between the sympathetic detonation of the charge structure 40 on the target 30 and the distance and charge amount can be judged.

[0030] In the non - sympathetic detonation test, multiple targets 30 are arranged on the periphery of the charge structure 40. The distance between one of the first data acquisition sensors 50 and the charge structure 40 is 3 m, and the remaining multiple first data acquisition sensors 50 respectively correspond to one target 30, and the distances from the corresponding first data acquisition sensors 50 and targets 30 to the charge structure 40 are equal. As Figure 4 and 5 shown, three targets are set as B1, B2, and B3 respectively, and each target corresponds to a pressure sensor P2, P3, and P4 respectively. The pressure sensor P1 is set at a position close to the charge structure 40.

[0031] Furthermore, the positions of the target B1 and the pressure sensor P2 correspond (height position and the distance from the charge structure), the positions of the target B2 and the pressure sensor P3 correspond, and the positions of the target B3 and the pressure sensor P4 correspond. In this way, the detonation pressures received by the targets B1, B2, and B3 can be detected through the pressure sensors P2, P3, and P4. By reasonably arranging the positions of the targets B1, B2, and B3, the relationship between the damage of the target shell by the charge structure 40 and the failure of the fuse can be judged.

[0032] The second data acquisition sensor 60 includes a wall pressure sensor, a strain sensor, and an acceleration sensor. As Figure 6 shown, the wall pressure sensor is arranged at the mid - point of the blast - facing surface of the target 30 and at the junction of the blast - facing surface and the back - blast surface. The wall pressure sensor can detect the wall pressure on the blast - facing surface and the wall pressure at the junction of the blast - facing surface and the back - blast surface when the target 30 is subjected to detonation, and can reflect the damage condition of the target 30 shell to a certain extent.

[0033] The strain sensor is arranged on the blast - facing surface, the back - blast surface, and the junction of the blast - facing surface and the back - blast surface of the target 30. As Figure 7 and Figure 8As shown in the figure, strain sensors E1, E2, and E3 are located on the blast-facing surface, strain sensor E4 is located at the junction of the blast-facing surface and the back-blast surface, and strain sensor E5 is located on the back-blast surface. The strain sensors can detect the strain conditions on the blast-facing surface, the back-blast surface, and the junction of the blast-facing surface and the back-blast surface when the target 30 is subjected to detonation, and to a certain extent, can reflect the damage condition of the outer shell of the target 30.

[0034] The acceleration sensor is provided at the upper end surface of the target 30, the midpoint of the blast-facing surface of the fuse, and the junction of the blast-facing surface and the back-blast surface. As Figure 9 shown, the acceleration sensor is arranged on the surface of the cylindrical fuse, such as measuring points A1, A2, and A3. By measuring the three-direction acceleration of the fuse, it can be judged whether the fuse fails, and it can be used as a basis for whether the chemically reactive target is damaged.

[0035] Embodiment 2 Based on Embodiment 1, this embodiment provides a method for blast damage test in shallow water areas. The method includes the following steps: Step 1: Arrange the positioning rope 23 on the water surface of the blasting test pool 100.

[0036] Step 2: Set the second data acquisition sensor 60 on the surface of the target 30 according to the test requirements.

[0037] Step 3: Connect the second data acquisition sensor 60 and the first data acquisition sensor 50 to the data acquisition component 12 through the data line 14.

[0038] Step 4: Connect the target 30 to the first floating body 21 and control the length between the target 30 and the first floating body 21. Connect the charge structure 40 to the second floating body 22 and control the length between the charge structure 40 and the second floating body 22. Arrange the first floating body 21 to the predetermined position on the positioning rope 23 to position the target 30, and arrange the second floating body 22 to the predetermined position on the positioning rope 23 to position the charge structure 40.

[0039] Step 5: Connect the first data acquisition sensor 50 to the preset position on the positioning rope 23.

[0040] Step 6: Fill the charge into the charge structure 40, connect the detonation cable 13 to the detonation control component 11, and after getting ready, blasting can be carried out.

[0041] According to the test type, such as the sympathetic detonation test or the non-sympathetic detonation test, select the appropriate type of target 30 and layout parameters. By controlling the positions of the first floating body 21 and the second floating body 22, it is possible to control each target 30 to be in a preset position.

[0042] In step 4, at least three suspension ropes 24 are used to connect the target 30 and the first floating body 21 together, and the direction of the target 30 is made to correspond to that of the first floating body 21, so that the predetermined direction of the target 30 faces the charge structure 40.

[0043] In the non-detonating experiment, since a large number of targets 30 are arranged in one blasting, the targets 30 should be marked and correspond to the corresponding first floating bodies 21. Sensors are placed on the surface of each target 30. When arranging the targets 30, it should be ensured that the sensors placed on their surfaces are in accurate directional positions to ensure that ideal stress and strain data can be received.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0045] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "mount", "connect", "couple" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0046] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A blasting damage test system for shallow water areas, characterized in that Including: A blasting test pool (100) for storing water; A positioning component, including a first floating body (21), a second floating body (22) and a positioning rope (23). The positioning rope (23) connects the first floating body (21) and the second floating body (22), fixing the first floating body (21) and the second floating body (22) at a preset position. The first floating body (21) and the second floating body (22) float on the water surface in sequence; A number of target boards (30), each target board (30) is connected to the first floating body (21) and is located below the first floating body (21). The target board (30) is filled with a charge component or a counterweight component inside. When the target board (30) is filled with a charge component, a sympathetic detonation test is carried out. When the target board (30) is filled with a counterweight component, a non-sympathetic detonation test is carried out; A charge structure (40), connected to the second floating body (22) and located below the second floating body (22); A number of first data acquisition sensors (50), arranged at target positions on the periphery of the charge structure (40) for acquiring pressure data at the target positions; A number of second data acquisition sensors (60), arranged on the surface of the target board (30) for acquiring surface pressure, strain and acceleration data of the target board (30); A control unit (10), connected to the charge structure (40), the first data acquisition sensors (50) and the second data acquisition sensors (60), for controlling the underwater blasting of the charge structure (40) and collecting the acquisition data of the first data acquisition sensors (50) and the second data acquisition sensors (60).

2. The shallow water area blasting damage test system according to claim 1, characterized in that: The target board (30) includes a first target board and a second target board. The first target board is filled with a charge component or a counterweight component inside, and the second target board is filled with a counterweight component inside.

3. The underwater explosion damage test system according to claim 1, characterized in that: The water depth in the blasting test pool (100) is 3 to 5 m.

4. The shallow water area blasting damage test system according to claim 1, characterized in that: The distance from the charge structure (40) to the water surface is not less than 2 m.

5. The shallow water area blasting damage test system according to claim 1, wherein: In the sympathetic detonation test, the distance between the target board (30) and the charge structure (40) is 50 to 150 mm, and the distance between the first data acquisition sensors (50) and the charge structure (40) is 6 to 8 m.

6. The underwater explosion damage test system according to claim 1, wherein: In the non-sympathetic detonation test, a plurality of the target boards (30) are arranged on the periphery of the charge structure (40). The distance between one of the first data acquisition sensors (50) and the charge structure (40) is 3 m, and the remaining plurality of first data acquisition sensors (50) respectively correspond to one target board (30), and the distances from the corresponding first data acquisition sensors (50) and target boards (30) to the charge structure (40) are equal.

7. The underwater explosion damage test system according to claim 1, wherein: The first data acquisition sensors (50) adopt pressure sensors.

8. The underwater blasting damage test system according to claim 1, characterized in that: The second data acquisition sensors (60) include wall pressure sensors, strain sensors and acceleration sensors. The wall pressure sensors are arranged at the midpoint of the detonation-facing surface of the target board (30) and at the junction of the detonation-facing surface and the non-detonation-facing surface. The strain sensors are arranged on the detonation-facing surface, the non-detonation-facing surface and the junction of the detonation-facing surface and the non-detonation-facing surface of the target board (30). The acceleration sensors are arranged on the upper end surface of the target board (30), at the midpoint of the detonation-facing surface of the fuse and at the junction of the detonation-facing surface and the non-detonation-facing surface.

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