Multi-stage explosion bubble curtain for arch dam protection

Abstract

The utility model discloses a multi-stage explosion bubble curtain for arch dam protection. The multi-stage explosion bubble curtain comprises a plurality of fiber explosion cable networks which are arranged at intervals and vertically float in water. A control device and a plurality of sensors; a plurality of detonating devices are arranged on each layer of fiber explosive rope group net, and each detonating device is connected with the control device through an electric wire. Electromagnetic waves generated by explosion impact are detected through the sensor, the sensor generates electric signals and transmits the electric signals to the control device, and then the control device activates the detonating device to detonate the fiber explosion rope. The explosion bubble curtain generated by explosion of the fiber explosion rope is used for replacing a traditional bubble curtain generating device, and the bubble curtain generating device is rapid in response; through the control device, time difference exists between explosion of each layer of fiber explosion cable net, bubbles are formed layer by layer, the bubble curtain exists for a long time, step-by-step reduction of explosion loads is achieved, the high arch dam under the underwater near-field explosion loads is protected, and the protection effect is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of anti-explosion protection of water conservancy projects, in particular to a multi-stage explosion bubble curtain for arch dam protection. Background Art

[0002] During blasting construction at water conservancy projects, existing structures must be protected from explosions. Numerous bubble curtain protection devices exist for this purpose, including one that utilizes an air compressor and launch tube suspended at a specific depth within the water (Publication No. CN201826334U), a device that generates a uniform and continuous bubble curtain using air distribution and transmission pipes (Publication No. CN116856471A), and a slope protection device that uses high-pressure air transmission pipes to reduce the impact of explosions (Publication No. CN215952384U). These inventions and utility model patents address, to a certain extent, the complex installation and construction challenges associated with water conservancy project explosion protection. However, traditional bubble curtain generation devices rely primarily on air pressure stations to generate bubbles, resulting in slow startup and limited protection in emergency situations. Utility Model Content

[0003] In view of the problems of slow startup and inability to sense explosions in the existing bubble curtain generating device, a rapid-sensing explosion bubble curtain generating device is provided to achieve the purpose of rapidly sensing explosion shock waves and quickly generating a large-scale explosion bubble curtain to protect ultra-high arch dams.

[0004] The utility model adopts the following technical solutions:

[0005] A multi-stage explosive bubble curtain for arch dam protection, comprising:

[0006] A plurality of fiber explosive rope nets are arranged at intervals and vertically floated in the water, each fiber explosive rope net comprising a steel frame and a fiber explosive rope wound around the steel frame;

[0007] a control device and a plurality of sensors, each sensor being connected to the control device via a wire;

[0008] Each layer of fiber explosive rope net is equipped with several detonating devices, each of which is connected to a control device through an electric wire. The control device controls the detonating devices on each layer of fiber explosive rope net to explode simultaneously, and controls the explosion time of the detonating devices on the adjacent layers of fiber explosive rope net, so that the fiber explosive rope net begins to detonate layer by layer.

[0009] The steel frame serves as a supporting structure, supporting and fixing the explosive cable net.

[0010] Preferably, the top end of each steel frame is connected to a plurality of floats, and the bottom end of each steel frame is connected to a plurality of lead sinkers. Each fiber explosive rope net floats vertically in the water through the action of the floats and lead sinkers.

[0011] A lead sinker is hung below the device to increase its overall weight, improve its resistance to water shock, and help it maintain balance at the desired depth. Floats are evenly distributed above each layer of explosive net to provide buoyancy, ensure stability in the water, and adjust the deployment depth.

[0012] The control device in this application is used to receive signals from the sensor, determine whether to start detonation, energize each detonating device, and control the detonating devices on the same layer of fiber explosive rope group to be energized at the same time, and delay the energization of the detonating devices on other layers of fiber explosive rope group. The control device can be implemented through existing technical means, so the specific circuit of the control device is not given in this application.

[0013] Preferably, the sensor is a Hall sensor arranged on a slope, riverbed or water surface at a certain distance from the fiber explosive rope network, or may be other sensors that can detect explosion signals.

[0014] After the sensor detects the blasting shock, it sends a signal to the control device, which turns on the detonator. The bubble curtain generating device starts quickly, ensuring that the first layer of bubble curtain is generated earlier than the explosion shock wave reaches the first layer of fiber explosive cable net.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model detects the electromagnetic waves generated by the explosion impact through a sensor, and the sensor generates an electrical signal and transmits it to the control device, and then the control device activates the detonator, detonates the fiber explosive cord, and uses the fiber explosive cord to explode to generate an explosion bubble curtain instead of the traditional bubble curtain generating device. The bubble curtain generating device reacts quickly; through the control device, there is a time difference in the explosion of each layer of the fiber explosive cord net, forming bubbles layer by layer, so that the bubble curtain exists for a longer time, thereby achieving a step-by-step reduction of the explosion load, protecting the high arch dam under the underwater near-field explosion load, and enhancing the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the winding method of the steel skeleton and fiber explosive cable;

[0019] Figure 3 This is a schematic diagram of the explosive fiber rope;

[0020] Figure 4Schematic diagram of steel skeleton;

[0021] In the attached figure: 1-sensor; 2-electric wire; 3-control device; 4-detonating device; 5-fiber explosive rope; 6-steel frame; 7-lead weight; 8-float. DETAILED DESCRIPTION

[0022] like Figure 1 The utility model proposes a multi-stage explosive bubble curtain for arch dam protection, comprising: a sensor 1, a control device 3, an initiating device 4, a fiber explosive cord 5, a steel frame 6, a lead sinker 7, a float 8, and an electrical wire 2. The steel frames 6 include multiple steel frames, each of which is wrapped with three to four layers of fiber explosive cord 5. A steel frame and the fiber explosive cords wound around it together form a fiber explosive cord network. The multi-stage explosive bubble curtain can include multiple fiber explosive cord networks. Each steel frame is connected to a float 8 at the top and a lead sinker 7 at the bottom. Each fiber explosive cord network floats vertically in the water through the action of the float 8 and lead sinker 7, and each fiber explosive cord network is spaced apart.

[0023] like Figure 2 Figure a shows a steel skeleton, and figure b shows how the fiber explosive cord is wrapped around the steel skeleton. The S-shaped arrangement ensures that energy can be released evenly and quickly during the explosion.

[0024] In such Figure 4 Each steel skeleton is wrapped with fiber explosive ropes, such as Figure 3 As shown, it forms Figure 1 The multiple fiber explosive ropes are networked.

[0025] Each layer of fiber explosive rope net is provided with a number of detonating devices 4, which can be electric detonators. Each electric detonator is connected to the control device through an electric wire. The control device 3 can control the detonators on each layer of fiber explosive rope net to explode simultaneously, thereby detonating the layer of fiber explosive rope net, and control the explosion time of each layer of fiber explosive rope net, so that the fiber explosive rope net starts to detonate layer by layer.

[0026] There are multiple sensors 1, each connected to a control device 3 via wires. Sensors 1 are Hall effect sensors placed on slopes, riverbeds, or water surfaces at a certain distance from the fiber explosive cord network. When sensors 1 detect abnormal electromagnetic waves generated by the explosion of explosives, they immediately convert this information into an electrical signal, which is then transmitted to control device 3 via wires 2. Upon receiving the sensor signal, control device 3 immediately activates its internal processor or microcontroller to process the data and send a detonation command to the detonators connected to each layer of the fiber explosive cord network. This command, in the form of an electrical signal, is transmitted to the detonators via wires 2. Upon receiving the current, the primary explosive or delay charge in the detonator rapidly ignites, causing the detonator to explode and detonate the connected fiber explosive cord 5. Upon detonation of the fiber explosive cord 5, the explosive within it rapidly explodes, generating a large amount of gas. Since the fiber explosive cord 5 is wound around the steel skeleton 6, and the same layer of explosive fiber cord net is simultaneously detonated by the detonator 4 of the same layer, the explosion is continuously transmitted along the winding route, and the bubbles quickly spread and merge with each other in a specific area, eventually forming a continuous bubble curtain.

[0027] The above is only a preferred specific implementation method of the present invention, but the application field of the present invention is not limited to this. Any technician familiar with the technical field of the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A multi-stage explosion bubble curtain for arch dam protection, characterized by: A network of fiber explosive cables arranged at intervals and floating vertically in the water; a control device and a plurality of sensors, each sensor being connected to the control device via a wire; Each layer of fiber explosive rope net is equipped with several detonating devices, each of which is connected to a control device through an electric wire. The control device controls the detonating devices on each layer of fiber explosive rope net to explode simultaneously, and controls the explosion time of the detonating devices on the adjacent layers of fiber explosive rope net, so that the fiber explosive rope net begins to detonate layer by layer.

2. The multi-stage explosion bubble curtain for arch dam protection according to claim 1 is characterized in that: Each fiber explosive cable network comprises a steel frame and fiber explosive cables wound around the steel frame.

3. The multi-stage explosion bubble curtain for arch dam protection according to claim 2 is characterized in that: The top of each steel frame is connected to a plurality of floats, and the bottom of each steel frame is connected to a plurality of lead sinkers. Each fiber explosive rope net floats vertically in the water through the action of the floats and lead sinkers.

4. The multi-stage explosion bubble curtain for arch dam protection according to claim 1 is characterized in that: The sensor is a Hall sensor.

Images