CN111997001A - Device and method for protecting arch end of high arch dam against downstream aerial contact explosion - Google Patents
Device and method for protecting arch end of high arch dam against downstream aerial contact explosion Download PDFInfo
- Publication number
- CN111997001A CN111997001A CN202010858172.8A CN202010858172A CN111997001A CN 111997001 A CN111997001 A CN 111997001A CN 202010858172 A CN202010858172 A CN 202010858172A CN 111997001 A CN111997001 A CN 111997001A
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- water tank
- water
- box body
- outer box
- arch
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- 238000004880 explosion Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000005192 partition Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000001012 protector Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 16
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000005422 blasting Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009528 severe injury Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/08—Wall dams
- E02B7/12—Arch dams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
- F42D5/045—Detonation-wave absorbing or damping means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
The invention relates to a device and a method for protecting the arch end of a high arch dam against downstream aerial contact explosion. The device for preventing downstream aerial contact explosion at the arch end of the high arch dam comprises a flat outer box body and a wavy or zigzag water tank arranged in the flat outer box body, wherein the outer box body is provided with a side surface in the thickness direction and an end surface vertical to the thickness direction, and the water tank is provided with a thickness direction parallel to the side surface and a concave-convex surface parallel to the end surface. This protector need not to reform transform the destruction to high arch dam itself, only need high arch dam hunch end low reaches receive when the explosion threatens, arrange the device in relevant position can, its simple structure, convenient preparation in advance has saved the engineering time, is applicable to quick cloth and puts, has swift convenient characteristics.
Description
Technical Field
The invention relates to the field of anti-explosion protection of arch ends of high arch dams, in particular to a device and a method for preventing downstream air contact explosion of the arch ends of the high arch dams, which are suitable for anti-explosion safety protection of the downstream of the arch ends of the high arch dams when war or terrorist attack occurs.
Background
The hydraulic engineering is an important basic resource of the country, is very important from both a political perspective and a benefit perspective, has serious accident consequences, and is a key destruction object once a war or a terrorist attack occurs. Since the 20 th century, many explosive attacks against dams and their power generation and distribution facilities have occurred worldwide with serious consequences.
The high arch dam is an arch water retaining building which is convex to the upstream, transfers the pressure of water to the bedrocks on both sides of the river valley by means of the action of an arch, and is characterized in that the stability of the arch dam is mainly maintained by the counter force of the arch ends on both sides. In normal operation of the high arch dam, once the arch end or the bedrock for supporting is damaged, the original stable state of the whole high arch dam is damaged, the high arch dam becomes a structure similar to a door, and in severe cases, the dam breaking danger can even occur, and huge casualties and economic losses can be caused. The downstream dam face of the high arch dam is exposed to the air and is more prone to explosion attack than the upstream dam face. In addition, it has been shown that airborne contact explosions tend to cause severe damage to the contact dam. Therefore, in a terrorist attack, the downstream arch end of the high arch dam is the key destruction object.
The existing anti-explosion protection design mainly aims at the dam heel and the flood discharge hole, and has less protection on the arch end face. Therefore, how to quickly arrange and improve the downstream air contact blasting resistance of the arch end of the high arch dam is an urgent problem to be solved in the safety protection of the high arch dam.
Disclosure of Invention
The invention aims to provide a device for preventing downstream aerial contact explosion at the arch end of a high arch dam, which aims to solve the problem of safety protection of the high arch dam, and adopts the following technical scheme:
the device for preventing downstream aerial contact explosion at the arch end of the high arch dam comprises a flat outer box body and a wavy or zigzag water tank arranged in the flat outer box body, wherein the outer box body is provided with a side surface in the thickness direction and an end surface vertical to the thickness direction, and the water tank is provided with a thickness direction parallel to the side surface and a concave-convex surface parallel to the end surface.
Preferably, the water tank has a plurality of layers and is overlapped in a thickness direction.
Preferably, the water tanks of the layers are working water tanks which can be filled with fluid medium, and the water tanks of the rest layers are empty water tanks.
Preferably, the working water tanks and the empty water tanks are alternately distributed in the thickness direction.
Preferably, a partition plate located in the middle of the wave shape trend or the broken line trend of the water tank is fixed in the outer tank body, the water tank is arranged on two sides of the partition plate, and the partition plate is matched with the water tank support.
Preferably, the end face is a vertical face, the water tank is vertical in the wave shape trend or the broken line trend, and the partition plate is horizontally arranged;
the top of the outer box body is provided with a flushing valve connected with the top of the water tank, and the bottom of the outer box body is provided with a drain valve communicated with the bottom of the water tank;
the clapboard is provided with water holes for communicating the water tanks at the two sides.
Preferably, the outer box body is of an angle shape, and the folding line of the outer box body is in the same direction as the wave shape trend or the folding line trend of the water tank.
Another purpose of the present invention is to provide a method specially used for the above device, the technical solution is as follows:
a method for protecting the arch end of a high arch dam against downstream airborne contact explosion includes hoisting the apparatus downstream of the arch end of the high arch dam with an end of the outer box facing downstream.
Preferably, one end face is a concave end face of the outer box body, and the convex end face is matched and attached to the arch end.
Preferably, the device is not filled with water before being hoisted, and the water filling operation is carried out after the device is hoisted in place.
The invention has the beneficial effects that:
this protector need not to reform transform the destruction to high arch dam itself, only need high arch dam hunch end low reaches receive when the explosion threatens, arrange the device in relevant position can, its simple structure, convenient preparation in advance has saved the engineering time, is applicable to quick cloth and puts, has swift convenient characteristics.
Furthermore, the protective device is provided with a water filling valve and a water discharging valve, so that water can not be filled during hoisting, and the device is filled after being hoisted in place; before removing, the device is drained, so that the device is convenient to detach.
Furthermore, the device is filled with water, so that the device and the surrounding air medium form a barrier of 'surrounding air-water body-surrounding air', and explosion energy can be attenuated by utilizing sudden change of wave impedance; the fold-line-shaped multi-layer water tank is easy to deform, so that a part of explosion energy can be absorbed in the process; the anti-explosion device is integrally provided with a certain radian, so that the anti-explosion device is better suitable for the position of the arch end, is convenient to arrange, and can simultaneously protect the arch end of the dam and bedrock beside the arch end. The downstream of the arch end of the high arch dam can be protected in a multi-level and all-round manner.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic view of the apparatus of FIG. 1 with the side panel removed;
FIG. 3 is an exploded schematic view of the apparatus of FIG. 1;
fig. 4 is a schematic view of the device of fig. 1 in use.
Detailed Description
Referring to fig. 1-4, there is shown a schematic view of the apparatus of the present invention for protection of high arch dam butts against downstream airborne contact explosion. The device mainly comprises an outer box body, a water tank 2 and a partition plate 3. The outer box body is a folded flat box body consisting of a surface plate 1, a side plate and a bottom plate 4, and the peripheries of the surface plate 1 and the bottom plate 4 are fixedly connected through the side plate; the water tank 2 is positioned in the outer tank body and is a fold line-shaped multi-layer water tank 2; the partition plate 3 penetrates through the polygonal multi-layer water tank 2 and is fixedly connected with the polygonal multi-layer water tank 2, the surface plate 1 and the bottom plate 4, and a large number of overflowing holes 9 are formed in the inner part of the polygonal multi-layer water tank 2, so that water filling and drainage are facilitated; a water filling valve 6 and a drain valve 7 are reserved on the side panel 5; the interlayer of the zigzag multi-layer water tank 2 is provided with water holes 8 which are convenient for water filling and water discharging.
The surface plate 1, the fold-line-shaped multilayer water tank 2, the partition plate 3, the bottom plate 4 and the side plate 5 are all made of Q235 steel plates, the thickness of the surface plate 1 and the thickness of the bottom plate 4 are slightly larger than that of the fold-line-shaped multilayer water tank 2, the thickness of the surface plate 1 and the thickness of the bottom plate 4 are 6 mm-10 mm, and the thickness of the steel plate used by the fold-line-shaped multilayer water tank 2 is 3-6 mm. The partition plate 3 plays a role in bearing the weight of water, the thickness of the partition plate is thicker, and the thickness of the partition plate is 8 mm-10 mm; regarding each complete angle of the polygonal-shaped multilayer water tank 2 as a period in the polygonal line walking direction of the polygonal-shaped multilayer water tank 2, and arranging a partition plate 3 every 2 periods; the space between the overflowing holes 9 on the partition plate 3 is 0.2-0.4 m, and the diameter is 30-60 mm. The angle of the fold-line-shaped multilayer water tank 2 is 110-140 degrees, the side length of the angle is 150-480 mm, and the thickness of each layer of tank is 50-100 mm; water hole 8 is reserved to 2 sides of water tank, and 8 interlayer in the water hole are arranged, and 8 positions in the water hole are corresponding to 7 positions of water filling valve 6 and drain valve reserved for 5 side panels, and the diameter of 8 water holes is 30mm ~80 mm.
The fold angle of the fold-line-shaped multilayer water tank 2 is 110-140 degrees, the side length of the fold angle is 150-480 mm, and the thickness of each layer of tank is 50-100 mm; the water hole 8 is reserved to 2 sides of zigzag multilayer water tank, and 8 interlayer in the water hole are arranged, and 8 positions in the water hole correspond to 7 positions of the water filling valve 6 and the drain valve reserved on the side panel 5, and the diameter of the water hole 8 is 30 mm-80 mm.
The outer box body is in a bent angle shape with a certain radian, which means that the cross section of the outer box body is divided into three parts, wherein two sides are straight sections, and the middle is an arc section; wherein the length of the straight section is 2.0 m-10.0 m; the central angle of the arc section is 60-90 degrees, and the chord length is 1.0-1.5 m. The vertical length of outer box is 5m ~10 m. Three water filling valves 6 are arranged at the top of the side panel 5, three drain valves 7 are arranged at the bottom of the side panel, the positions of the water filling valves 6 and the drain valves 7 correspond to the positions of holes in the side surface of the zigzag multi-layer water tank 2, and the diameters of the water filling valves 6 and the drain valves are 30 mm-80 mm.
Although the device is aimed at resisting the air contact blasting at the downstream of the arch end of the high arch dam 12, the device can also play a role in protecting the non-contact blasting; the whole density of the device is made to be larger than the water density in the manufacturing process, and the device can also be used for underwater explosion prevention. By filling water into the device, the device and the surrounding air medium form a barrier of 'surrounding air-water body-surrounding air', and the explosion energy is attenuated by utilizing the sudden change of wave impedance; the fold-line-shaped multi-layer water tank 2 is easy to deform, so that a part of explosion energy can be absorbed in the process; meanwhile, the anti-explosion device is integrally provided with a certain radian, so that the anti-explosion device is better suitable for the position of the arch end, is convenient to arrange, and can simultaneously protect the arch end of the dam and bedrock beside the arch end. Thereby improving the protection of the high arch dam 12 from airborne contact explosions downstream of the arch end.
The use method of the device is as follows:
1. the range and the position of the anti-explosion protection are determined, and the range to be protected in the embodiment is the range of 3m near the arch end. Therefore, the length of the straight section of the antiknock device in the example is selected to be 3m, the central angle of the arc section is selected to be 90 degrees, and the chord length is 1 m; the longitudinal length thereof was taken to be 10 mm.
2. The device mainly utilizes the wave impedance abrupt change to attenuate the explosion energy, so the surface plate 1 and the bottom plate 4 play a certain protection role on the polygonal line-shaped multi-layer water tank 2, the steel plate selected by the steel plates of the surface plate 1 and the bottom plate 4 is thicker, and the thickness of the surface plate 1 and the bottom plate 4 is selected to be 10mm in the example.
4. The fold-line-shaped multilayer water tank 2 has the function of absorbing explosion energy by self deformation, the thickness of a steel plate is thinner, and the thickness of the steel plate of the fold-line-shaped multilayer water tank 2 is 5mm in the example; in this example, the fold angle of the fold line shaped multi-layer water tank 22 is 120 degrees, and the side length of the fold angle is 250 mm; the thickness of each layer of the tank body of the water tank 22 is 50 mm; the water hole 88 on the side of the water tank 22 has a diameter of 30 mm.
5. The partition plate 3 bears the weight of water, the steel plate is selected to be thicker, and the thickness of the partition plate 3 in the example is 10 mm; in this example, the holes in the partition 3 have a pitch of 0.2m and a diameter of 30 mm.
6. In this example, the diameters of the water filling valve 6 and the water discharge valve 7 on the side panel 5 are 30 mm.
7. A lifting ring 10 is arranged at the top of the anti-explosion device, the anti-explosion device is placed downwards along the downstream surface of the arch end of a high arch dam 12 through the connection of a steel wire rope 11 and the lifting ring 10, and the anti-explosion device is arranged at the position needing protection on the downstream surface of the arch end.
8. When the downstream of the whole arch end needs explosion-proof measures, a plurality of hoisting devices can be used for simultaneously arranging.
The above description is only about the preferred embodiment of the present invention, but it should not be understood as limiting the claims, and the present invention may be modified in other structures, not limited to the above structures. In general, all changes which come within the scope of the invention are intended to be embraced therein.
Claims (10)
1. The device for preventing downstream aerial contact explosion at the arch end of the high arch dam is characterized by comprising a flat outer box body and a wavy or zigzag water tank arranged in the flat outer box body, wherein the outer box body is provided with a side surface in the thickness direction and an end surface vertical to the thickness direction, and the water tank is provided with a thickness direction parallel to the side surface and a concave-convex surface parallel to the end surface.
2. The apparatus of claim 1, wherein the water tanks have a plurality of layers and are stacked to be overlapped in a thickness direction.
3. The apparatus of claim 2, wherein a part of the layer tanks in each layer of tanks are working tanks filled with fluid medium, and the remaining part of the layer tanks are empty tanks.
4. The apparatus as claimed in claim 3, wherein the working water tanks and the empty water tanks are alternately arranged in the thickness direction.
5. The device as claimed in any one of claims 1 to 4, wherein a partition plate is fixed in the outer box body and positioned at the middle position of the wave-shaped trend or the broken line trend of the water tank, the water tank is arranged on two sides of the partition plate, and the partition plate is matched with the water tank support.
6. The device according to claim 1, wherein the end face is a vertical face, the water tank has a wave shape trend or a broken line trend which is vertical, and the partition plate is horizontally arranged;
the top of the outer box body is provided with a flushing valve connected with the top of the water tank, and the bottom of the outer box body is provided with a drain valve communicated with the bottom of the water tank;
the clapboard is provided with water holes for communicating the water tanks at the two sides.
7. The device as claimed in any one of claims 1 to 4, wherein the outer body is of angular form with a fold line in the same direction as the wave or fold line of the tank.
8. A method as specified in any one of claims 1 to 7 wherein the apparatus is hoisted downstream of the arch end of the high arch dam with an end of the outer body facing downstream.
9. The method of claim 8 wherein the one end is a concave end of the outer body and the convex end is flush with the arcuate end.
10. A method according to claim 8 or 9, wherein the apparatus is not filled with water prior to hoisting and is filled with water after hoisting into place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858172.8A CN111997001B (en) | 2020-08-24 | 2020-08-24 | Device and method for protecting arch end of high arch dam against downstream aerial contact explosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010858172.8A CN111997001B (en) | 2020-08-24 | 2020-08-24 | Device and method for protecting arch end of high arch dam against downstream aerial contact explosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111997001A true CN111997001A (en) | 2020-11-27 |
| CN111997001B CN111997001B (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010858172.8A Expired - Fee Related CN111997001B (en) | 2020-08-24 | 2020-08-24 | Device and method for protecting arch end of high arch dam against downstream aerial contact explosion |
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| Country | Link |
|---|---|
| CN (1) | CN111997001B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3759997A (en) * | 1996-09-16 | 1998-03-19 | Adcock, Robert | A receptacle |
| CN106679523A (en) * | 2016-12-29 | 2017-05-17 | 武汉大学 | Air buffer device used for eliminating underwater near-distance explosion shock waves |
| CN106759157A (en) * | 2016-12-12 | 2017-05-31 | 武汉大学 | A kind of protector of anti-underwater contact explosion of being called in person for concrete gravity dam dam |
| CN206554028U (en) * | 2017-03-20 | 2017-10-13 | 武汉大学 | Underwater blast resistance construction |
| CN107314725A (en) * | 2017-06-23 | 2017-11-03 | 北京理工大学 | One kind becomes wall thickness composite anti-explosion structure |
-
2020
- 2020-08-24 CN CN202010858172.8A patent/CN111997001B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3759997A (en) * | 1996-09-16 | 1998-03-19 | Adcock, Robert | A receptacle |
| CN106759157A (en) * | 2016-12-12 | 2017-05-31 | 武汉大学 | A kind of protector of anti-underwater contact explosion of being called in person for concrete gravity dam dam |
| CN106679523A (en) * | 2016-12-29 | 2017-05-17 | 武汉大学 | Air buffer device used for eliminating underwater near-distance explosion shock waves |
| CN206554028U (en) * | 2017-03-20 | 2017-10-13 | 武汉大学 | Underwater blast resistance construction |
| CN107314725A (en) * | 2017-06-23 | 2017-11-03 | 北京理工大学 | One kind becomes wall thickness composite anti-explosion structure |
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| Publication number | Publication date |
|---|---|
| CN111997001B (en) | 2022-03-25 |
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