CN109958114B - Construction method of underwater arresting net - Google Patents
Construction method of underwater arresting net Download PDFInfo
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- CN109958114B CN109958114B CN201910279798.0A CN201910279798A CN109958114B CN 109958114 B CN109958114 B CN 109958114B CN 201910279798 A CN201910279798 A CN 201910279798A CN 109958114 B CN109958114 B CN 109958114B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B15/00—Cleaning or keeping clear the surface of open water; Apparatus therefor
- E02B15/04—Devices for cleaning or keeping clear the surface of open water from oil or like floating materials by separating or removing these materials
- E02B15/08—Devices for reducing the polluted area with or without additional devices for removing the material
- E02B15/0814—Devices for reducing the polluted area with or without additional devices for removing the material with underwater curtains
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- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a construction method of an underwater arresting net, which comprises the following steps: 1) arranging ground piles on the beach; 2) binding the protective net into a bundle, and binding and connecting a first floating ball and a second floating ball on the counterweight anchor chain; 3) connecting the front ends of a group of protective nets with a shoreside pile steel wire rope, dragging the tail ends of the group of protective nets into the sea by using a working ship, cutting off a binding rope of a first floating ball, and simultaneously laying a positioning anchor at the position of a second floating ball; 4) after the previous group of protective nets are installed, dragging another group of protective nets to the shore by using a working ship to reach the tail ends of the previous group of protective nets; connecting the two groups of protective nets on the working ship; 5) and (5) repeatedly executing the step 4), and connecting the tail ends of the last group of protective nets with the shore ground pile steel wire ropes. The modular protective net is sequentially installed and positioned by using the working ship, labor division operation can be performed, the installation is rapid and timely, the protection response time is prolonged, and the safety of important targets on the sea is ensured.
Description
Technical Field
The invention relates to a construction method of an underwater arresting net, and belongs to the technical field of underwater arresting.
Background
With the development of offshore equipment in China and the increasing severity of offshore safety environment, the guard protection of important targets on the sea, such as large ships, offshore drilling platforms, docks, artificial reefs, special military-use sea areas and other civil and military facilities, is very important.
Because the position of an important target on the sea is relatively fixed, the important key parts are more, the area range is wide, and protection is performed by an underwater protective net at present. However, how to rapidly construct the arresting net and reduce the response time becomes an urgent problem to be solved.
Disclosure of Invention
The invention aims to solve the technical problems that: the defects of the technology are overcome, and the method for quickly constructing the underwater arresting net is provided.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a construction method of an underwater arresting net comprises the following steps that the underwater arresting net is composed of a floating body, a protective net and a counterweight anchor chain; the protective net is formed by connecting modularized flexible nets; the method comprises the following steps:
1) arranging ground piles on the beach, burying the ground piles in deep soil, and reserving only connecting steel wire ropes;
2) connecting the flexible nets into a protective net group consisting of 100-300 meters, wherein the flexible nets are connected through 8-shaped buckles; then the floating body, the counterweight anchor chain and the flexible net are assembled and bound into a bundle by using ropes, and meanwhile, a first floating ball is bound and connected to the counterweight anchor chain; meanwhile, at every preset distance, a rope with a second floating ball is arranged to be connected with the anchor chain;
3) connecting the front ends of a group of protective nets with a shoreside pile steel wire rope, dragging the tail ends of the group of protective nets by using a working ship, and dragging the whole group of protective nets after launching; after the protective net completely enters the sea, the other working ship cuts off the binding rope along the first floating ball, and naturally sinks by using the weight of the counterweight anchor chain to drive the protective net to be unfolded; meanwhile, a positioning anchor is arranged at the position of the second floating ball to fix the posture of the whole group of protective net;
4) after the previous group of protective nets are installed, dragging another group of protective nets to the shore by using a working ship to reach the tail ends of the previous group of protective nets; connecting two groups of protective nets on a working ship, namely respectively connecting the front ends of the protective nets of the current group with a flexible net and a counterweight anchor chain at the tail end of the protective net of the previous group, and dragging the tail end of the protective net of the current group by using the working ship until the protective net of the current group is completely laid; the other work ship cuts off the binding rope along the first floating ball, naturally sinks by using the weight of the counterweight anchor chain, and simultaneously lays a positioning anchor at the position of the second floating ball;
5) and (5) repeating the step 4) until the tail ends of the last group of protection nets are close to the sand beach, and connecting the tail ends of the last group of protection nets with the shore ground pile steel wire rope.
Wherein when utilizing the work ship to the bank side to pull the protection network, arrange the body that every group protection network is about to go into water in the bank side, prevent to appear and tie, the upset condition.
Preferably, in step 4), the front end and the tail end of each group of protection net are fixed by using positioning anchors.
The modular protective net is sequentially installed and positioned by using the working ship, labor division operation can be performed, the installation is rapid and timely, the protection response time is prolonged, and the safety of important targets on the sea is ensured.
The further improvement of the technical scheme is as follows: at certain intervals, an opening and closing door for the ship to enter and exit is arranged between the two groups of protective nets, at the moment, after the previous group of protective nets are laid, the buoyancy tank is positioned by anchoring by using a working ship and is connected with the front ends of the previous group of protective nets, the other buoyancy tank is positioned by anchoring at a position away from the width of the opening and closing door, and the buoyancy tank is connected with the tail ends of the next group of protective nets; installing traction rings at intervals on the top of a flexible net, wherein the flexible net is provided with loading weights; a winch is arranged on one of the buoyancy tanks, one end of a traction rope is connected with the other buoyancy tank, and the other end of the traction rope penetrates through a traction ring and then is wound on the winch; the width of the flexible net is more than 1.5 times of the width of the opening and closing door. When the ship approaches, the flexible net can rapidly descend to form a U-shaped opening after the traction rope is released by operating the winch, so that the ship can smoothly pass through the opening. The haulage rope is tightened up through the hoist engine after the boats and ships pass through, and after the haulage rope was taut, the flexible net also can recover, maintains the protection state. The invention has simple and quick operation and reliable use and can ensure the quick entering and exiting of the ship.
The technical scheme is further improved as follows: the flexible net is woven by a single composite conductive cable, the cable core of the composite conductive cable is a metal wire containing a waterproof insulating layer, and a high polymer composite fiber layer is twisted around the cable core; communication and electrified cables are laid on the beach, and the cables need to be buried on the spot after being laid, so that the cables are prevented from being damaged; and connecting the communication and power-on cables with two ends of the composite conductive cable of each group of flexible nets. Preferably, the adjacent flexible nets are wound and connected through a composite conductive cable and then connected together through 8-shaped buckles. Therefore, the module electronic network can be formed by electrifying the composite conductive cable, whether the power is cut off or not is monitored, if the power is cut off, a certain flexible network is cut off, and therefore the invading frogman can be accurately positioned and identified, and the safety of important targets on the sea is guaranteed.
The technical scheme is further improved as follows: before the underwater blocking net is laid under water, buoys are arranged on the anchor chain at intervals and are connected with chain links of the anchor chain through ropes; after the underwater barrier net is launched, a winch on a working ship is used for tightening the buoy and confirming that the buoy is in a vertical state, so that the position of the anchor chain is accurately judged; the pouring guide pipe is placed down along the rope by using the working ship so as to pour cement mortar into the anchor chain position, and the anchor chain is prevented from being lifted by frogman by using the self weight of the solidified cement mortar. Just so can fix a position the anchor chain through the buoy, then pour cement mortar into to the anchor chain, cement mortar just combines as an organic wholely with the anchor chain after solidifying to can utilize the weight of cement mortar to prevent that the frogman from lifting up the back through the protection network with the anchor chain at the bottom of the protection network. In addition, the processed underwater arresting net can improve the delay time, strives for time for response, and greatly improves the protection capability.
Drawings
The invention will be further explained with reference to the drawings.
Fig. 1 is a schematic view of the construction of an underwater barrier net.
Fig. 2 is a schematic structural view of the opening and closing door.
Fig. 3 is a schematic view of the principle of pouring cement mortar to the anchor chain.
Reference numerals: the floating body 1, an anchor chain 2, a ground pile 3, a ground anchor 4, a composite conductive cable 5, an opening and closing door 7, a positioning anchor 8, a buoyancy tank 10, an opening and closing door flexible net 9, a protective net 20, a beach 21, a winch 22, a hauling rope 23, a loading block 24, a buoy 30, a work boat 31 and cement mortar 32.
Detailed Description
Example one
In the embodiment, the underwater arresting net is shown in fig. 1 and comprises a floating body 1, a protective net 20 and a counterweight anchor chain 2; the protection net 20 is formed by connecting modularized flexible nets.
The construction method of the underwater arresting net comprises the following steps:
1) the ground piles 3 are arranged on the beach 21 by using the crawler excavator, the ground piles 3 are buried in deep soil, and only the connecting steel wire ropes are reserved.
2) Connecting the flexible nets into a protective net 20 with a group of 100-300 meters, wherein the flexible nets are connected through 8-shaped buckles; then assembling the floating body 1, the counterweight anchor chain 2 and the flexible net, binding the assembled floating body and the counterweight anchor chain into a bundle by using a rope, and binding and connecting a first floating ball on the counterweight anchor chain; in addition, at preset intervals, a rope with a second floating ball is arranged to be connected with the anchor chain 2. The first floating ball and the second floating ball can be distinguished through colors or shapes.
3) The front ends of a group of protective nets are connected with a shoreside pile 3 through steel wire ropes, the tail ends of the group of protective nets are dragged by a working ship, and the whole group of protective nets are dragged after launching; after the protective net completely enters the sea, the other working ship cuts off the binding rope along the first floating ball, and naturally sinks by using the weight of the counterweight anchor chain to drive the protective net to be unfolded; meanwhile, a positioning anchor 8 is arranged at the position of the second floating ball, and the posture of the whole group of protective net is fixed.
4) After the previous group of protective nets are installed, dragging another group of protective nets to the shore by using a working ship to reach the tail ends of the previous group of protective nets; connecting two groups of protective nets on a working ship, namely respectively connecting the front ends of the protective nets of the current group with a flexible net and a counterweight anchor chain 2 at the tail ends of the protective nets of the previous group, and dragging the tail ends of the protective nets of the current group by using the working ship until the protective nets of the current group are laid; the other work ship cuts off the binding rope along the first floating ball, naturally sinks by using the weight of the counterweight anchor chain, and simultaneously lays the positioning anchor 8 at the position of the second floating ball.
5) And (5) repeating the step 4) until the tail ends of the last group of protective nets are close to the sand beach, and connecting the tail ends of the last group of protective nets with the steel wire ropes of the shore piles 3.
This embodiment is when implementing, and the staff is best arranges the body that every group protection network is about to go into water on the bank, prevents to appear knoing, the upset condition. When the protective net is connected with the steel wire rope of the shore foundation pile 3, the protective net is connected with the ground anchor 4 through the rope, and then the ground anchor 4 is connected with the foundation pile 3. In addition, the outer sides of the floating body 1 and the floating box 10 are wrapped with rope net bags made of polyethylene materials, the rope net bags convert linear force generated by the blocking nets into surface force borne by the floating body, the generation of concentrated force can be effectively prevented, and the service life of the floating box and the floating body is greatly prolonged.
Preferably, in the steps 3) and 4), the front end and the tail end of each group of protective nets are positioned and fixed by positioning anchors 8.
The embodiment can be further modified as follows:
(1) and an opening and closing door 7 for the ship to enter and exit is arranged between the two groups of protective nets at certain intervals, and the structure of the opening and closing door 7 is shown in figure 2. At this time, after the previous set of protective net is laid, the buoyancy tank 10 is anchored and positioned (three-anchoring manner) by using the working ship 31, and the buoyancy tank 10 is connected with the front end of the previous set of protective net, and the other buoyancy tank is anchored and positioned at a position away from the width of the opening and closing door, and is connected with the tail end of the next set of protective net. Installing traction rings on the top of a flexible net at intervals, wherein the flexible net is provided with loading weights 24; a winch 22 is arranged on one of the buoyancy tanks, one end of a traction rope 23 is connected with the other buoyancy tank, and the other end of the traction rope passes through a traction ring and then is wound on the winch; the width of the flexible net is more than 1.5 times of the width of the opening and closing door.
(2) The flexible net is woven by a single composite conductive cable, the cable core of the composite conductive cable is a metal wire containing a waterproof insulating layer, and a high polymer composite fiber layer is twisted around the cable core; communication and electrified cables are laid on the beach, and the cables need to be buried on the spot after being laid, so that the cables are prevented from being damaged; and connecting the communication and power-on cables with two ends of the composite conductive cable of each group of flexible nets. Preferably, the adjacent flexible nets are wound and connected through a composite conductive cable and then connected together through 8-shaped buckles.
(3) As shown in fig. 3, before the underwater arresting net is laid in water, buoys 30 are arranged on the anchor chains 2 at intervals, and the buoys 30 are connected with chain links of the anchor chains 2 through ropes; after the underwater barrier net is launched, the buoy 30 is tightened by using a winch on a working ship 31, and the buoy 30 is confirmed to be in a vertical state, so that the position of the anchor chain is accurately judged; the pouring guide pipe is lowered along the rope by using the working ship 31 so as to pour cement mortar into the anchor chain position, and the anchor chain is prevented from being lifted by frogman by using the self weight of the solidified cement mortar.
The present invention is not limited to the above embodiments, and the technical solutions of the above embodiments of the present invention may be combined with each other in a crossing manner to form a new technical solution, and all technical solutions formed by adopting equivalent substitutions fall within the protection scope of the present invention.
Claims (7)
1. A construction method of an underwater arresting net comprises the following steps that the underwater arresting net is composed of a floating body, a protective net and a counterweight anchor chain; the protective net is formed by connecting modularized flexible nets; characterized in that the method comprises the following steps:
1) arranging ground piles on the beach, burying the ground piles in deep soil, and reserving only connecting steel wire ropes;
2) connecting the flexible nets into a protective net group consisting of 100-300 meters, wherein the flexible nets are connected through 8-shaped buckles; then the floating body, the counterweight anchor chain and the flexible net are assembled and bound into a bundle by using ropes, and meanwhile, a first floating ball is bound and connected to the counterweight anchor chain; meanwhile, at every preset distance, a rope with a second floating ball is arranged to be connected with the anchor chain;
3) connecting the front ends of a group of protective nets with a shoreside pile steel wire rope, dragging the tail ends of the group of protective nets by using a working ship, and dragging the whole group of protective nets after launching; after the protective net completely enters the sea, the other working ship cuts off the binding rope along the first floating ball, and naturally sinks by using the weight of the counterweight anchor chain to drive the protective net to be unfolded; meanwhile, a positioning anchor is arranged at the position of the second floating ball to fix the posture of the whole group of protective net;
4) after the previous group of protective nets are installed, dragging another group of protective nets to the shore by using a working ship to reach the tail ends of the previous group of protective nets; connecting two groups of protective nets on a working ship, namely respectively connecting the front ends of the protective nets of the current group with a flexible net and a counterweight anchor chain at the tail end of the protective net of the previous group, and dragging the tail end of the protective net of the current group by using the working ship until the protective net of the current group is completely laid; the other work ship cuts off the binding rope along the first floating ball, naturally sinks by using the weight of the counterweight anchor chain, and simultaneously lays a positioning anchor at the position of the second floating ball;
5) and (5) repeating the step 4) until the tail ends of the last group of protection nets are close to the sand beach, and connecting the tail ends of the last group of protection nets with the shore ground pile steel wire rope.
2. A method of constructing an underwater barrier net according to claim 1, wherein: when the protective net is dragged to the bank by utilizing the working ship, the floating bodies which are about to enter water into each group of protective nets are arranged on the bank, and knotting and overturning are prevented.
3. A method of constructing an underwater barrier net according to claim 1, wherein: in the step 4), the front end and the tail end of each group of protective nets are fixed by positioning anchors.
4. A method of constructing an underwater barrier net according to claim 1, wherein: at certain intervals, an opening and closing door for the ship to enter and exit is arranged between the two groups of protective nets, at the moment, after the previous group of protective nets are laid, the buoyancy tank is positioned by anchoring by using a working ship and is connected with the front ends of the previous group of protective nets, the other buoyancy tank is positioned by anchoring at a position away from the width of the opening and closing door, and the buoyancy tank is connected with the tail ends of the next group of protective nets;
installing traction rings at intervals on the top of a flexible net, wherein the flexible net is provided with loading weights; a winch is arranged on one of the buoyancy tanks, one end of a traction rope is connected with the other buoyancy tank, and the other end of the traction rope penetrates through a traction ring and then is wound on the winch; the width of the flexible net is more than 1.5 times of the width of the opening and closing door.
5. A method of constructing an underwater barrier net according to claim 4, wherein: the flexible net is woven by a single composite conductive cable, the cable core of the composite conductive cable is a metal wire containing a waterproof insulating layer, and a high polymer composite fiber layer is twisted around the cable core;
communication and electrified cables are laid on the beach, and the cables need to be buried on the spot after being laid, so that the cables are prevented from being damaged; and connecting the communication and power-on cables with two ends of the composite conductive cable of each group of flexible nets.
6. A method of constructing an underwater barrier net according to claim 5, wherein: the adjacent flexible nets are wound and connected through a composite conductive cable and then connected together through 8-shaped buckles.
7. A method of constructing an underwater barrier net according to any of claims 1 to 6, wherein: before the underwater blocking net is laid under water, buoys are arranged on the anchor chain at intervals and are connected with chain links of the anchor chain through ropes;
after the underwater barrier net is launched, a winch on a working ship is used for tightening the buoy and confirming that the buoy is in a vertical state, so that the position of the anchor chain is accurately judged;
the pouring guide pipe is placed down along the rope by using the working ship so as to pour cement mortar into the anchor chain position, and the anchor chain is prevented from being lifted by frogman by using the self weight of the solidified cement mortar.
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| CN201910279798.0A CN109958114B (en) | 2019-04-09 | 2019-04-09 | Construction method of underwater arresting net |
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| CN201910279798.0A CN109958114B (en) | 2019-04-09 | 2019-04-09 | Construction method of underwater arresting net |
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| CN1242123C (en) * | 2004-01-19 | 2006-02-15 | 戎新国 | Dam protection and breach closing method using multilayer floating bag, sinking net and cloth in flood fighting |
| KR100615966B1 (en) * | 2004-04-29 | 2006-08-28 | 전명춘 | Installation method of preventing net for dirt using hybrid anchors |
| CN106522180B (en) * | 2015-09-15 | 2021-07-27 | 青岛厚科信息工程有限公司 | Water surface floater intercepting device |
| CN108018844B (en) * | 2017-12-01 | 2023-06-16 | 大连汇洋船务工程配套有限公司 | Sinking-floating port safety door |
| CN108086267B (en) * | 2017-12-29 | 2023-12-01 | 中交第三航务工程局有限公司 | Portable anti-fouling screen layout construction method |
| CN108317904A (en) * | 2018-04-10 | 2018-07-24 | 泰州市金海运船用设备有限责任公司 | Underwater electronic arresting system waterborne |
| CN109440731B (en) * | 2018-11-09 | 2023-10-31 | 中国船舶重工集团公司第七一九研究所 | Water area facility safety protection arresting system |
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