CN116356906A - Construction system and construction method for lake micro-disturbed vegetation to absorb sand - Google Patents

Abstract

The invention relates to a construction system and a construction method for absorbing sand of micro-disturbance vegetation in a lake, wherein a plurality of sand absorbing devices are arranged on an assembled floating platform at intervals, the sand absorbing devices are arranged in a multi-row and multi-column mode, a flushing device is arranged between every two adjacent sand absorbing devices, a flushing pipe of the flushing device sprays high-pressure water flow into a raised sand hill area to flush a sand layer of the sand hill area to a surrounding sand absorbing pipe, all sand in the sand hill area is absorbed by the sand absorbing pipe, sand absorption is completed under the condition of not disturbing a mud layer and vegetation, the mud layer and vegetation integrally move downwards after sand absorption, and the lake bottom is smooth and has no recess; the construction system of the invention has a plurality of groups of sand sucking devices and flushing devices which work simultaneously, the construction range is wide, sand can be sucked at the bottom of a large-area lake by one-time construction, and compared with a sand sucking ship with a single sand sucking pipe, the sand sucking efficiency is improved in a doubling way.

Description

Construction system and construction method for lake micro-disturbed vegetation to absorb sand

technical field

The invention relates to the technical field of underwater sand suction dredging, in particular to a construction system and a construction method for lake micro-disturbance vegetation sand suction.

Background technique

As shown in Figure 1, the bottom of a large lake (such as Dongting Lake) has mud and sand layers from top to bottom, and vegetation grows on the mud layer. A common sand mining method that does not disturb the vegetation is to use a drilling sand suction ship. The head passes through the mud layer and enters the sand layer, and the sand suction pipe sucks out the sand layer. It is hoped that after the sand layer is sucked out, the mud layer and vegetation will move down vertically. and vegetation for the purpose of sucking out the sand layer.

But in fact, the drilling-type sand suction ships of the prior art all work for a single drilling head, and a single drilling head passes through the mud layer, and first sucks away the sand around the drilling head, and the mud and vegetation above the sucked sand are due to lack of support. When it collapses downward, the surrounding of the drill head collapses into an inclined mud layer, which further hinders the sand suction of the drill head; the single drill head leaves the first sand suction point, and then enters the second sand suction point next to it to work, repeating the aforementioned drilling After the mud layer and vegetation around the head collapse, small sand dunes will form between two sand suction points (as shown in Figure 1). Small sand dunes are uneven and cannot achieve the purpose of micro-disturbance sand suction.

Another disadvantage is that the drilling type sand suction ship works with a single drilling head, and the work efficiency is too low for large-area lakes.

Contents of the invention

In view of the shortcomings or deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a construction system and construction method for slightly disturbing vegetation to absorb sand in the lake, which can eliminate the small sand dunes formed by the sand absorption at the bottom of the lake, and truly realize the non-disturbance of the mud layer. And under the condition of vegetation, it can absorb sand, and the bottom of the lake is flat without pits, and the efficiency is greatly improved.

In order to solve the problems of the technologies described above, the present invention has the following constitutions:

The sand-absorbing construction system for micro-disturbed vegetation in lakes includes a floating platform on which multiple sand-absorbing devices are installed at intervals. The sand-absorbing devices are arranged in multiple rows and columns. Each set of sand-absorbing devices has a The sand suction pipe that enters the sand layer absorbs sand to the outside, and a set of flushing device is installed in the middle of each of the four adjacent sand suction pipes. The flushing device has a flushing pipe that can enter the sand layer and spray high-pressure water flow. The sand in the middle is rushed to the sand suction pipes of four adjacent sand suction devices, and multiple sand suction devices and multiple flushing devices work synchronously.

Further, the distances between the sand suction pipes of two adjacent sand suction devices in each row or/and column are equal, and the distance between the flushing pipes of each flushing device is equal to the four adjacent sand suction pipes up, down, left, and right.

A row and/or column of flushing devices can be arranged at the edge of two sides of the floating platform, and the spacing of the flushing devices is the same as that of other rows or columns of flushing devices.

The sand-absorbing construction system for micro-disturbed vegetation in lakes also includes an operation management system, which is electrically connected to each sand-absorbing device and each flushing device, and automatically controls the start and stop of each power unit of the sand-absorbing device and flushing device, and The construction system is accurately positioned.

The above-mentioned flushing device includes a flushing pipe and a flushing pipe column, the flushing pipe is a hollow long round pipe, the flushing pipe column is a vertical thin hollow frame, the bottom is installed on a floating platform, the flushing pipe is hoisted in the flushing pipe column by a winch, The hoist drives the flushing pipe to move up and down along the column of the flushing pipe, the flushing pump is installed on the floating platform, and the high-pressure water pipe connects the flushing pump and the flushing pipe. The front end of the flushing pipe is a tapered end, and a plurality of drainage holes are uniformly distributed along the circumference of the tapered surface.

The sand suction device is a drilling type sand suction device. The drilling type sand suction device includes a column installed on the floating platform, and the hoist and the pulley block pull the agitation assembly to move up and down along the column; the agitation assembly includes a vertical sand suction pipe, and the sand suction pipe is hollow. A round pipe, a square hollow column is fixed above the sand suction pipe, and a drill pipe is coaxially arranged in the sand suction pipe. The upper end of the drill pipe is connected to the stirring motor installed above the hollow column, and the lower end of the drill pipe is the stirring blade and the drill bit, and the stirring motor drives the drill pipe. It rotates in the sand suction pipe; the drilling type sand suction device also includes a high-pressure water pump and a high-pressure water pipe. The high-pressure water pump is fixed on the floating platform. The other end of the high-pressure water pipe penetrates into the sand suction pipe to the drill bit. The water flow and the drill bit stir the sand layer; the sand suction pump is installed on the floating platform, and the sand suction pump is connected to the sand suction pipe through a steel wire rubber hose. The high-pressure water pump and the sand suction pump are respectively located on both sides of the sand suction pipe.

The construction method for lake micro-disturbance vegetation to absorb sand is carried out as follows:

S1 Floating platform assembly: In the first operation area, multiple floating tanks are connected and assembled into a floating platform;

S2 fix the floating platform: anchor the floating platform in the water with an anchor;

S3 Installation of sand suction devices: Install multiple sand suction devices at intervals on the floating platform. The sand suction devices are arranged in multiple rows and columns. Each set of sand suction devices has a sand suction pipe that can directly enter the sand layer. Suction sand;

S4 Install the flushing device: install a set of flushing device among the four adjacent sand suction devices up, down, left, and right. The flushing device has a flushing pipe that can enter the sand layer and spray high-pressure water. To the sand suction pipes of four adjacent sand suction devices;

S5 Install generator sets: install multiple generator sets evenly on the floating platform, and electrically connect the power sources of the sand suction device and flushing device with the generator sets;

S6 Suction sand in the first operation area, respectively start multiple sets of sand suction devices and multiple sets of flushing devices at the same time, after the sand suction pipe and flushing pipe move down into the sand layer, the sand suction pipe sucks sand while the flushing pipe sprays out high pressure Water flow, sand is rushed to the four sand suction pipes adjacent to each flushing pipe and sucked out. After sand suction is completed, the sand suction pipe and the flushing pipe move up and reset, and the sand suction device and the flushing device are turned off.

After S6, S7 mobile construction system can be carried out: after the sand suction in the first operation area is completed, the second operation area is determined, the cable of one side is loosened and the cable of the other side is tightened, and the construction system moves to the predetermined direction , after gradually moving to the target position, the floating platform is anchored in the second operation area, and S6 is repeated.

Add an operation management system between S5 and S6: install an operation management system on the floating platform, connect the operation management system with each sand suction device and each flushing device, and the operation management system automatically controls the sand suction device and each flushing device. Start and stop of the power unit, and accurate positioning of the construction system.

The specific steps for installing the flushing device are as follows: first fix the flushing pipe column and the hoist on the floating platform, then connect the hoisting machine with the pulley on the flushing pipe, the hoisting machine lifts the flushing pipe into the flushing pipe column, and finally install the flushing machine on the floating platform. The water pump and the flushing pump are connected with the flushing pipe with a high-pressure water pipe.

Further, when S3 installs the sand suction device, the distance between the sand suction pipes of two adjacent sand suction devices in each row or/and column is equal.

Further, when installing the flushing device in S4, the distance between each flushing pipe and the four adjacent sand suction pipes up, down, left, and right is equal, and one row and/or one row of flushing devices are arranged at the edges of two sides of the floating platform to flush The spacing of the water fixtures is the same as that of the flushing fixtures of other rows or columns.

Compared with the prior art, the present invention has the advantages of:

In the construction system and construction method of the present invention, a flushing device is added in the middle of the sand suction device, and the flushing pipe of the flushing device sprays high-pressure water flow into the raised sand dune area, and the sand layer in the sand dune area is flushed to the surrounding sand suction pipe. , all the sand in the dune area is sucked away by the sand suction pipe, and the sand suction can be completed without disturbing the mud layer and vegetation. After the sand is sucked, the mud layer and vegetation move down as a whole, and the lake bottom is flat without depressions.

The construction system and construction method of the present invention include multiple sets of sand suction devices and flushing devices that work simultaneously. The construction range is large, and a large area of lake bottom can be sucked in one construction. Compared with the sand suction ship with a single sand suction pipe, this The construction system group drills and absorbs sand, which doubles and greatly improves the efficiency of sand absorption.

The sand suction device and the flushing device are arranged according to the same distance between the sand suction pipes of two adjacent sand suction devices in each row and/or column, and the flushing pipe of each flushing device is connected to the four adjacent sand suction pipes up, down, left, and right. The distances are equal, and the high-pressure water flow from the flushing pipe in the middle can evenly flush the sand to the four sand suction pipes, and then be sucked out. The effect of eliminating small sand dunes is better, and the lake bottom is smoother. Moreover, multiple devices in the construction system are arranged equidistantly, which makes it more convenient to arrange pipelines and wiring, and the overall layout is also more beautiful.

One row and/or one row of flushing devices are arranged at the edge of two sides of the floating platform, so that the junction of the two operation areas is not missed, and the effect of sand suction is achieved that the construction area at the bottom of the lake is completely flat.

The flushing device used in the construction system and construction method of the present invention, the flushing pipe has the functions of drill bit and water spray at the same time, so that the flushing device has the ability to pass through the lake bottom mud layer and enter the sand layer without disturbance, and can directly spray high-pressure water flow Eliminate small sand dunes. The drilling type sand suction device can enter the sand layer through the mud layer and vegetation without disturbing the mud layer and vegetation, and is an ideal equipment for sand extraction without disturbance.

In the construction method of the present invention, the floating platform is assembled on-site by buoyant tanks, which are customized in the factory in advance according to a uniform size. The equipment on the platform is also separately transported to the construction site, and then assembled on the floating platform on site. This method of separate transportation and reassembly is convenient for transportation and transfer.

When the construction system of the present invention moves, use the cable winches and anchors installed at the four corners of the floating platform to first loosen the cables of one side of the winch and then tighten the cables of the other side of the winch, and the construction system will move in a predetermined direction, step by step Moving to the target position, this method of movement does not require additional external power devices, and is a low-cost and reliable method of movement.

Description of drawings

Fig. 1: the schematic diagram of the lake bottom sand layer of background technology;

Fig. 2: the schematic diagram of construction system and construction method of the present invention;

Fig. 3: the front view of construction system of the present invention;

Fig. 4: the top view of construction system of the present invention;

Fig. 5: the perspective view of construction system of the present invention;

Fig. 6: the sectional view of the flushing pipe of the flushing device of the present invention;

Fig. 7: A front view of the construction system of the present invention in a sand-absorbing state.

The meanings of the symbols in the figure are as follows:

Floating platform 100, floating tank 110; sand suction device 200, sand suction pipe 210, hollow column 220, column 230, drill pipe 240, drill bit 241, stirring blade 242, stirring motor 250, stirring assembly 260, high pressure water pump 270, sand suction Pump 280; flushing device 300, flushing pipe 310, drain hole 311, flushing pipe column 320, flushing pump 330; generator set 400, cable winch 500, anchor 510, operation management system 600.

Detailed ways

The idea, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of the present invention.

The working principle of the construction system and method for sand-absorbing lake micro-disturbance vegetation of the present invention, as shown in FIG. The sand suction blind area between the sand suction pipes 210 will form a small sand dune (referred to as the sand dune area), and a flushing device 300 is installed above the small sand dune, and the high-pressure water flow ejected from the flushing pipe 310 of the flushing device 300 flushes the sand in the small sand dune. To the adjacent sand suction pipe 210, it is sucked away by the sand suction device 200 to eliminate the undulating sand dunes formed on the bottom of the lake during the sand suction process, so as to achieve the goal of moving down the lake bottom mud layer and vegetation as a whole after sand suction, and achieving a smooth surface. Do not disturb vegetation to absorb sand. Moreover, multiple sand suction devices 200 work at the same time, which greatly improves the sand suction efficiency.

The construction system for absorbing sand by micro-disturbance vegetation in lakes will be described below through examples.

Embodiment one

The sand-absorbing construction system for micro-disturbed vegetation in lakes includes a floating platform 100 that can float on the water surface. A plurality of sand-absorbing devices 200 are installed at intervals on the floating platform 100. The sand-absorbing devices 200 are arranged in multiple rows and columns. The sand suction device 200 has a sand suction pipe 210 that can directly enter the sand layer to suck sand to the outside, and a set of flushing device 300 is installed in the middle of each of the four adjacent sand suction pipes 210 up, down, left, and right. The flushing device 300 has the ability to The flushing pipe 310 that enters the sand layer and ejects high-pressure water flow, the high-pressure water rushes the sand in the middle to the sand suction pipes 210 of the four adjacent sand suction devices 200, and multiple sand suction devices 200 and multiple flushing devices 300 are synchronized respectively Work.

When the construction system is working, start the sand suction device 200 and the flushing device 300, and all the sand suction devices 200 and flushing devices 300 respectively drive the sand suction pipe 210 and the flushing pipe 310 to move down into the sand layer synchronously, and then start the sand suction device 200 to suck Sand, water flushing device 300 sprays water, while sand suction device 200 stirs and absorbs sand, the flushing pipe 310 of flushing device 300 sprays high-pressure water flow into the sand dune area raised between adjacent four sand suction pipes 210, and the sand is Flushing to the adjacent four sand suction pipes 210 and being sucked out, the sand in the dune area is sucked away by the sand suction pipes 210, the sand layer is completely sucked away, and the mud layer and vegetation move down as a whole without being disturbed. The bottom of the lake is flat without unevenness.

The structure of the sand suction pipe 210 of the sand suction device 200 and the flushing pipe 310 of the flushing device 300 must be able to pass through without disturbing the mud layer and vegetation, and directly enter the sand layer. Generally, the front end is a drill bit with a tip or a cone .

In this construction system, a flushing device 300 is set above the sand dune area in the middle of every four sand suction pipes 210, and the sand formed in the sand dune during construction is rushed to the adjacent four sand suction pipes 210 to be sucked out, so as to eliminate the sand dune area and make the lake bottom The mud layer and vegetation moved down as a whole, and the bottom of the lake was flat without pits.

The floating platform 100 is spliced by a plurality of buoyant tanks 110. The buoyant tank 110 is an empty cuboid box welded by metal plates, which can float on the lake. The buoyant tanks are small in size and easy to manufacture and transport. Free assembly, strong flexibility. The volume and quantity of the buoyancy tanks are calculated according to the weight of equipment carried by the floating platform 100 and the draft.

As shown in Figure 4, for example, each pontoon 110 is 24 meters long x 4 meters wide, and placed horizontally in 12 rows x 2 columns to form a floating platform 100 of 48 meters x 48 meters, which can be installed on the floating platform 100. 16 sets of sand suction devices 200 and 12 sets of flushing devices 300, that is, 16 sand suction pipes 210 absorb sand at the same time, and 12 flush water pipes 310 simultaneously disperse the sand dune area formed in the middle of the four sand suction pipes 210 around them. The system can absorb sand for a lake bottom area of 2304 square meters at a time. Compared with the sand suction boat with a single sand suction pipe, the construction system group drill sand suction doubles the sand suction efficiency.

The sand sucked out by the sand suction device 200 of the entire construction system needs to be discharged in a unified manner, so the sand sucked out by the sand suction device 200 of each row is sent to the same branch pipe, and the sand from multiple branch pipes is then merged into the same longitudinal sand discharge main pipe The unified output can be transported to the barge docked beside the floating platform 100 to be transported away.

Cable winches 500 and anchors 510 are also installed on the four corners of the floating platform 100 of the construction system to fix the entire floating platform 100 to the current work area from four directions, so that the position of each work area is more accurate, and each work area After absorbing sand, it can ensure that the entire water area is not missed, and has a good sand absorption effect.

The construction system also includes a plurality of generator sets 400 installed longitudinally and evenly on the floating platform 100, electrically connected to the sand suction device 200 and the flushing device 300, to meet the power demand for field operations of the construction system.

Embodiment two

When a plurality of sand suction devices 200 in Embodiment 1 are arranged, the distance between the sand suction pipes 210 of two adjacent sand suction devices 200 in each row or column is equal, and all adjacent sand suction devices in each row and column 200 are all equally spaced, and the distance between the flushing pipe 310 of each flushing device 300 and the four adjacent sand suction pipes 210 up, down, left, and right is equal.

Arranged in this way, the high-pressure water flow of the flushing pipe 310 in the middle can evenly flush the sand to the four sand-absorbing pipes 210, and then be sucked out, and there will be no part of the distance between the flushing pipe 310 and the sand-absorbing pipe 210, so that the sand dunes will be in this direction. In the case of leftover sand, the effect of eliminating small sand dunes is better, and the lake bottom is smoother. Moreover, multiple devices in the construction system are arranged equidistantly, which makes it more convenient to arrange pipelines and wiring, and the overall layout is also more beautiful.

Embodiment Three

The construction system of Embodiment 1 generally moves along the vertical or horizontal adjacent second operation area after the first operation area completes the sand absorption. One row or one column of flushing devices 300 is arranged at the edge of two sides of the floating platform 100 .

According to the equal distance between two adjacent sand suction devices 200 in each row or/and each column, each flushing device 300 has an equal distance from the four adjacent sand suction pipes 210 up, down, left, and right, and the added row and/or column The spacing of the flushing devices 300 in one row is the same as that of the flushing devices 300 in other rows or columns.

Embodiment Four

The construction system of Embodiment 1 also includes an operation management system 600, which includes an industrial computer, a GPS locator, a depth sounder, and an ultrasonic detector. connect.

The operation management system 600 automatically controls the start and stop times of the power devices of the sand suction device 200 and the flushing device 300 according to the data of the depth sounder and the ultrasonic detector, so as to realize the automatic control of the construction system and improve the construction efficiency. The GPS locator accurately locates the construction system to ensure full coverage of the entire water area without omissions and improve the construction effect of sand suction.

Embodiment five

The flushing device 300 of Embodiment 1 or Embodiment 3 is specifically that the flushing device 300 includes a flushing pipe 310 and a flushing pipe column 320, the flushing pipe 310 is a hollow long round pipe, and the flushing pipe column 320 is a vertically arranged thin hollow frame , the bottom is installed on the floating platform 100, the flushing pipe 310 is hoisted in the flushing pipe column 320 by a hoist and a pulley, the hoist drives the flushing pipe 310 to move up and down along the flushing pipe column 320, the flushing pump 330 is installed on the floating platform 100, and the high-pressure water pipe is connected to The outlet of the flushing water pump 330 and the upper part of the flushing water pipe 310 .

Further, as shown in FIG. 6 , the front end of the flushing pipe 310 is a tapered end, which is conducive to entering the mud layer and sand layer. Four through holes are uniformly distributed along the circumference of the tapered surface as drainage holes 311, so that Water flows out of the flushing pipe 310 from four directions, and the upper end of the flushing pipe 310 communicates with the high-pressure water pipe. Of course, the number of drain holes 311 at the end of the flush pipe 310 can be more than four.

After the sand suction pipe 210 of the sand suction device 200 starts to suck sand, start the flushing pump 330 of the flushing device 300, and the high-pressure water flow flows to the hollow flushing pipe 310 along the high-pressure water pipe, and is flushed out from the end drainage hole 311, and the sand on the sand dune is flushed out. The mud layer and sand rush towards the directions of the surrounding four sand suction pipes 210 to achieve the purpose of removing sand dunes.

Embodiment six

The flushing device 300 of the first embodiment is the flushing device 300 described above, and the sand suction device 200 is a drilling type sand suction device.

Specifically, as shown in Fig. 3 and Fig. 4, each drilling type sand suction device includes a sand suction pipe 210, the sand suction pipe 210 arranged vertically is a hollow circular pipe, and a section of square hollow column 220 is fixed above the sand suction pipe 210 The drill pipe 240 is coaxially arranged in the sand suction pipe 210, the upper end of the drill pipe 240 is connected to the stirring motor 250 installed above the hollow column 220, the lower end of the drill pipe 240 is a drill bit 241, and the top of the drill bit 241 is evenly distributed around the center of the drill pipe 240. Three tapered stirring blades 242, the drill bit 241 and the stirring blade 242 extend out from the lower end of the sand suction pipe 210, and the stirring motor 250 with high torque drives the drill pipe 240 and the drill bit 241 to rotate at a low speed in the sand suction pipe 210. The sand suction pipe 210, hollow The assembly parts of column 220 , stirring motor 250 , drill rod 240 and drill bit 241 are stirring assembly 260 .

The towering column 230 is installed on the floating platform 100. The winch and the pulley block cooperate with the traction stirring assembly 260 to move up and down along the column 230. The hoisting machine and its driving motor are installed on the floating platform 100, and the pulley block is installed on the column 230 and the stirring assembly 260. The agitation assembly 260 rotates downward while moving the bit 241 downward, through the mud layer and into the sand layer.

The drilling sand suction device also includes a high-pressure water pump 270 and a high-pressure water pipe connected thereto. The high-pressure water pump 270 is fixed on the floating platform 100. The other end of the high-pressure water pipe penetrates into the sand suction pipe 210 and leads to the drill bit 241. The high-pressure water pipe is a hose. While spraying water from the high-pressure water pipe, the drill bit 241 stirs the sand layer, and the high-pressure water can disperse the sand layer to facilitate sand pumping. The sand suction pump 280 is installed on the floating platform 100. The sand suction pump 280 communicates with the sand suction pipe 210 through the steel wire rubber hose. Under the suction action of the sand suction pump 280, the sand is drawn out through the sand suction pipe 210 and the steel wire rubber hose. The high-pressure water pump 270 and the sand suction pump 280 are respectively located on both sides of the sand suction pipe 210 .

When the drilling type sand suction device is carrying out sand suction construction, the sand suction pipe 210 moves downward under the control of the winch, and at the same time, the agitation motor 250 with high torque drives the drill bit 241 and the agitation blade 242 to rotate at a low speed. , the high-pressure water pipe starts to spray water, and the high-pressure water pipe sprays high-pressure water flow into the sand layer while the drill bit 241 stirs the sand layer, and the sand suction pump 280 sucks the sand through the sand suction pipe 210 on one side.

It can be seen from the structure and working process of the above-mentioned drilling type sand suction device that it can pass through the mud layer and vegetation to enter the sand layer without disturbing the mud layer and vegetation, and is an ideal equipment for undisturbed sand extraction.

Embodiment seven

The flushing device 300 in the third embodiment is the aforementioned flushing device, and the sand suction device 200 is the above-mentioned drilling type sand suction device.

The above are multiple embodiments of the construction system of the present invention, but the technical solutions of the construction system are not limited to the specific cases listed in the embodiments.

The principle of the above-mentioned construction system is the same as that of a construction method for lake micro-disturbance vegetation to absorb sand, which is carried out in the following steps:

S1 Assemble the floating platform 100: in the first operation area, connect and assemble a plurality of buoyant tanks 110 into a large floating platform 100.

The first operation area is determined according to manual delineation or GPS positioning.

The entire construction system is decomposed into multiple identical sand-absorbing units. For example, there are 8 sand-absorbing units in the construction system shown in FIG. The floating platform 100 of each sand suction unit is assembled one by one in the water area next to the operation area, and then assembled into one in the operation area according to Figure 4, so that the number of floating tanks 110 can not be wrong, and the assembly efficiency is higher.

Assembling between the buoyancy tanks 110 adopts the hook plate to hook the location of the positioning column tightly, and the mode of bolt connection. The hook plate hole of one pontoon 110 is hooked to the positioning column on the other pontoon 110, and the locating column is arranged inside the pontoon 110. After positioning, the sides of the two pontoons 110 are close together, and the connecting plate is also close together, and then Connect the connecting plates with bolts to realize the connection between the floating tanks 110 . The above-mentioned connection structure of the buoyant tank 110 can be prefabricated on the buoyant tank 110, and the on-site assembly is more convenient and quick.

S2 Fixing the floating platform 100: using the anchor 510 to anchor the floating platform 100 in the water. Cable winches 500 (Fig. 4) are installed at the four corners of the floating platform 100. The cable ends of the winch 500 are equipped with anchors 510 to anchor the entire floating platform 100 to the bottom of the lake from four directions and fix it in the first operation area. .

S3 Install sand suction devices 200: Install multiple sand suction devices 200 at intervals on the floating platform 100. The sand suction devices 200 are arranged in multiple rows and columns. Each set of sand suction devices 200 has a sand suction device that can directly enter the sand layer. The sand suction pipe 210 sucks sand outwards.

Preferably, the distances between the sand suction pipes 210 of two adjacent sand suction devices 200 in each row or/and column are equal.

When installing each sand suction device 200, take the drilling type sand suction device as an example, first fix the column 230 and the hoist at the middle position on the floating platform 100 of each sand suction unit, install the stirring assembly 260 on the column 230, and then connect Hoist and stirring assembly 260, and then install high-pressure water pump 270 and sand-suction pump 280 on both sides of sand-suction pipe 210, and the high-pressure water pipe connected to the outlet of high-pressure water pump 270 enters sand-suction pipe 210 from above and extends to drill bit 241, and is connected with steel wire rubber hose Sand suction pump 280 and sand suction pipe 210.

S4 Install the flushing device 300: install a set of flushing device 300 among the four adjacent sand suction devices 200 up, down, left, and right. The flushing device 300 has a flushing pipe 310 that can enter the sand layer and eject high-pressure water flow. Each flushing device 300 flushes the sand to the sand suction pipes 210 of four adjacent sand suction devices 200 .

Preferably, the distance between each flushing pipe 310 and four adjacent sand suction pipes 210 up, down, left, and right is equal.

In order to achieve a good sand suction effect in the area where the two operating areas meet, a row and/or a column of flushing devices 300 are arranged at the edges of two sides of the floating platform 100, and the spacing of the flushing devices 300 is the same as that of other rows or columns. The distances between the flushing devices 300 are the same.

S5 Installing generator sets 400 : installing a plurality of generator sets 400 evenly distributed on the floating platform 100 , and electrically connecting the power sources of the sand suction device 200 and the flushing device 300 with the generator sets 400 .

The sand suction construction system is all field work, and it is inconvenient to use electricity. The generator set 400 driven by a diesel engine is installed to supply power, which is convenient for the construction system to work offshore.

S6 Carry out sand suction in the first operation area, respectively start multiple sets of sand suction devices 200 and multiple sets of flushing devices 300 at the same time, after the sand suction pipe 210 and flush water pipe 310 move down into the sand layer, the sand suction pipe 210 will absorb sand while flushing. One side of the water pipe 310 sprays high-pressure water, and the sand is washed to the four sand suction pipes 210 adjacent to each flushing pipe 310 and sucked out. After the sand suction is completed, the sand suction pipe 210 and the flushing pipe 310 move up and reset, and shut down A sand suction device 200 and a flushing device 300.

Taking the sand suction device 200 as a drilling type sand suction device as an example, the construction method of the present invention starts the hoist and the stirring motor of the drilling type sand suction device at the same time, as shown in Figure 7, the sand suction pipes 210 and 210 of all sand suction devices 200 The flushing pipe 310 of the flushing device 300 moves down through the mud layer and vegetation and enters the sand layer, and then starts the high-pressure water pump 270 of the sand suction device 200, the sand suction pump 280 and the flushing pump 330 of the flushing device 300. Stirring and suction of sand, the flushing pipes 310 of the flushing device 300 are aimed at the sand dune area at the same time to flush sand around, the sand is flushed to the four sand suction pipes 210 adjacent to each flushing pipe 310 and sucked out together, eliminating small sand dunes, The sand suction device 200 can suck out the sand layer of the entire operation area at the bottom of the lake without disturbing the mud layer and vegetation, the mud layer and vegetation move down as a whole, and the lake bottom has no sand dunes, no unevenness, and is smoother.

In this construction method, multiple sand suction devices 200 and water flushing devices 300 work at the same time, which doubles the sand suction efficiency.

In this construction method, the floating platform 100 is assembled on site by buoyant tanks 110. The buoyant tanks 110 are pre-made in the factory according to a uniform size. , The equipment on the floating platform 100 is also separately transported to the construction site, and then assembled on the floating platform 100 on site. This method of separate transportation and reassembly is convenient for transportation and transition.

Embodiment two

Add S7 mobile construction system after S6 in Embodiment 1: After the sand suction in the first operation area is completed, the second operation area is determined, the cable of one side is loosened and the cable of the other side is tightened, and the construction system moves to After moving in a predetermined direction and step by step to the target position, the floating platform 100 is anchored in the second operation area, and S6 is repeated.

If the floating platform 100 plans to move to the second operation area to the left, loosen the cables of the two cable winches 500 on the right side of the floating platform 100 for a certain distance, then tighten the two cable winches 500 on the left side, and the floating platform 100 moves to the left, moving a certain distance each time, repeating the operation several times until it moves to the second operation area, and then anchors the floating platform 100 again. After the sand suction in the second operation area is completed, move to the third operation area and repeat the above Operate until the sand suction work of the entire lake bottom is completed.

The cable winch 500 and the anchor 510 cooperate with the mobile construction system, which is a low-cost and reliable mobile method.

Embodiment three

The actions of the construction system in Embodiment 1 can be controlled manually or automatically. The automatic control method is to add and install the operation management system 600 between S5 and S6: install the operation management system 600 on the floating platform 100, connect the operation management system 600 with each sand suction device 200 and each flushing device 300, and the operation management system 600 automatically controls the start and stop of each power unit of the sand suction device 200 and the flushing device 300, and accurately locates the construction system.

In the above embodiments, the specific steps for installing the flushing device 300 are as follows: first fix the flushing pipe column 320 and the winch on the floating platform 100 (Figure 3), and then connect the hoisting machine to the pulley on the flushing pipe 310, and the hoisting machine connects the flushing pipe 310 is hoisted in the flushing pipe column 320, and finally a flushing pump 330 is installed on the floating platform 100, and the flushing pump 330 is connected with the upper end of the flushing pipe 310 with a high-pressure water pipe.

To sum up, in the construction system and construction method of the present invention, a plurality of sand suction devices are installed at intervals on the assembled floating platform, and the sand suction devices are arranged in multiple rows and columns. A set of flushing device is installed in the middle of the four sand suction devices. The flushing pipe of the flushing device sprays high-pressure water into the raised sand dune area, flushing the sand layer in the sand dune area to the surrounding sand suction pipe, and all the sand in the sand dune area It is sucked away by the sand suction pipe, and the sand suction can be completed without disturbing the mud layer and vegetation. After the sand is sucked, the mud layer and vegetation move down as a whole, and the lake bottom is flat without depressions.

The construction system and construction method of the present invention include multiple sets of sand suction devices and flushing devices that work simultaneously. The construction range is large, and a large area of lake bottom can be sucked in one construction. Compared with the sand suction ship with a single sand suction pipe, this The construction system group drills and absorbs sand, which doubles and greatly improves the efficiency of sand absorption.

The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and all should cover Within the scope of the claims of the present invention.

Claims (13)

1. The utility model provides a construction system of lake perturbation vegetation sand sucking, its characterized in that includes floating platform (100) install a plurality of sand sucking devices (200) on floating platform (100) with the interval, sand sucking devices (200) are arranged according to multirow and multirow mode, every set sand sucking device (200) have one can directly get into sand layer sand sucking pipe (210) outside sand sucking, every upper and lower left and right sides are adjacent four sand sucking pipe (210) are middle installs one set of bath device (300), bath device (300) have can get into sand layer blowout high pressure water flow's flushing pipe (310), high pressure water flow with middle sand towards adjacent four sand sucking device (200) sand sucking pipe (210) department, a plurality of sand sucking devices (200), a plurality of bath device (300) respectively synchronous work.

2. The lake micro-disturbance vegetation sand sucking construction system according to claim 1, wherein the distance between the sand sucking pipes (210) of each row or/and each column of two adjacent sand sucking devices (200) is equal, and the distance between the flushing pipe (310) of each flushing device (300) and the four sand sucking pipes (210) adjacent to each other in the up-down, left-right direction is equal.

3. The construction system for sucking sand of lake micro-disturbance vegetation according to claim 2, wherein one row and/or one column of the flushing devices (300) is provided at edges of two sides of the floating platform (100), and the interval of the flushing devices (300) is the same as the interval of the flushing devices (300) of other rows or columns.

4. The construction system for sucking sand by micro-disturbance vegetation in lakes according to claim 1, further comprising a work management system (600), wherein the work management system (600) is electrically connected with each sand sucking device (200) and each flushing device (300), and automatically controls the start and stop of each power device of the sand sucking device (200) and the flushing device (300) and accurately positions the construction system.

5. A construction system for sucking sand by micro-disturbance vegetation in a lake according to claim 1 or 3, wherein the flushing device (300) comprises a flushing pipe (310) and a flushing pipe column (320), the flushing pipe (310) is a hollow long circular pipe, the flushing pipe column (320) is a vertically arranged thin and high hollow frame, the bottom of the flushing pipe column is installed on the floating platform (100), the flushing pipe (310) is hoisted in the flushing pipe column (320) by a hoisting machine, the hoisting machine drives the flushing pipe (310) to move up and down along the flushing pipe column (320), a flushing pump (330) is installed on the floating platform (100), and a high-pressure water pipe is connected with the flushing pump (330) and the flushing pipe (310).

6. The construction system for absorbing sand by micro-disturbance vegetation in lakes according to claim 5, wherein the front end of the flushing pipe (310) is a conical end, and a plurality of water draining holes (311) are uniformly distributed on the conical surface along the circumference.

7. The construction system for sucking sand of micro-disturbance vegetation in a lake according to claim 5, wherein the sand sucking device (200) is a drilling type sand sucking device, the drilling type sand sucking device comprises a column (230) installed on the floating platform (100), and a winch and pulley block traction stirring assembly (260) moves up and down along the column (230); the stirring assembly (260) comprises a sand suction pipe (210) which is vertically arranged, the sand suction pipe (210) is a hollow circular pipe, a square hollow column (220) is fixed above the sand suction pipe (210), a drill rod (240) is coaxially arranged in the sand suction pipe (210), the upper end of the drill rod (240) is connected with a stirring motor (250) which is arranged above the hollow column (220), the lower end of the drill rod (240) is provided with stirring blades (242) and a drill bit (241), and the stirring motor (250) drives the drill rod (240) to rotate in the sand suction pipe (210); the drilling type sand sucking device further comprises a high-pressure water pump (270) and a high-pressure water pipe, the high-pressure water pump (270) is fixed on the floating platform (100), the other end of the high-pressure water pipe penetrates into the sand sucking pipe (210) and leads to the drill bit (241), the high-pressure water pipe sprays high-pressure water flow into the sand layer at one side, and the drill bit (241) agitates the sand layer at the other side; the sand suction pump (280) is installed on the floating platform (100), the sand suction pump (280) is communicated with the sand suction pipe (210) through a steel wire rubber pipe, and the high-pressure water pump (270) and the sand suction pump (280) are respectively located on two sides of the sand suction pipe (210).

8. The construction method for absorbing sand of the micro-disturbance vegetation in the lake is characterized by comprising the following steps of:

s1 assembling a floating platform (100): in a first working area, connecting and assembling a plurality of buoyancy tanks (110) into one floating platform (100);

s2 fix the floating platform (100): -anchoring the floating platform (100) in water with an anchor (510);

s3, installing a sand sucking device (200): a plurality of sand sucking devices (200) are arranged on the floating platform (100) at intervals, the sand sucking devices (200) are arranged in a plurality of rows and a plurality of columns, and each set of sand sucking devices (200) is provided with a sand sucking pipe (210) which can directly enter a sand layer for sucking sand outwards;

s4, installing a flushing device (300): a set of flushing devices (300) are arranged in the middle of each four sand sucking devices (200) which are adjacent to each other in the left-right direction, the flushing devices (300) are provided with flushing pipes (310) which can enter a sand layer to spray high-pressure water flow, and each set of flushing devices (300) is used for flushing sand to the sand sucking pipes (210) of the four sand sucking devices (200) which are adjacent to each other;

s5, installing a generator set (400): a plurality of generator sets (400) are uniformly distributed and installed on the floating platform (100), and each power source of the sand sucking device (200) and the flushing device (300) is electrically connected with the generator sets (400);

s6, sand is sucked in a first operation area, a plurality of sand sucking devices (200) and a plurality of flushing devices (300) are started simultaneously, after a sand sucking pipe (210) and a flushing pipe (310) move downwards to enter a sand layer, the sand sucking pipe (210) sucks sand while the flushing pipe (310) sprays high-pressure water flow, sand is sucked to four adjacent sand sucking pipes (210) of each flushing pipe (310) and sucked out, and after sand sucking is completed, the sand sucking pipes (210) and the flushing pipes (310) move upwards to reset, and the sand sucking devices (200) and the flushing devices (300) are shut down.

9. The method for constructing the lake micro-disturbance vegetation sand sucking according to claim 8, wherein the step S7 mobile construction system is performed after the step S6: after sand suction in the first operation area is completed, a second operation area is determined, one side of the cable hinging machine cable is loosened, the other side of the cable hinging machine cable is tightened again, the construction system moves towards a preset direction, after the construction system moves to a target position gradually, the floating platform (100) is anchored in the second operation area, and S6 is repeated.

10. The method for constructing the lake micro-disturbance vegetation sand sucking according to claim 8, wherein the job management system (600) is additionally installed between S5 and S6: the operation management system (600) is installed on the floating platform (100), the operation management system (600) is connected with each sand sucking device (200) and each flushing device (300), and the operation management system (600) automatically controls the starting and stopping of each power device of the sand sucking device (200) and the flushing device (300) and accurately positions a construction system.

11. The construction method for sucking sand of lake micro-disturbance vegetation according to any one of claims 8 to 10, wherein the specific steps of installing the flushing device (300) are: the water flushing device comprises a water flushing pipe column (320) and a winch which are fixed on a floating platform (100), the winch is connected with a pulley on the water flushing pipe (310), the winch is used for hoisting the water flushing pipe (310) in the water flushing pipe column (320), and finally a water flushing pump (330) is installed on the floating platform (100), and the water flushing pump (330) is connected with the water flushing pipe (310) through a high-pressure water pipe.

12. The method for constructing the sand sucking operation of the lake micro-disturbance vegetation according to claim 8, wherein when the sand sucking device (200) is installed in S3, the distance between the sand sucking pipes (210) of each row or/and each column of two adjacent sand sucking devices (200) is equal.

13. The construction method for sucking sand of micro-disturbance vegetation in lakes according to claim 12, wherein when S4 installs the flushing device (300), each flushing pipe (310) is equal to four sand sucking pipes (210) adjacent to each other in the upper, lower, left and right directions, and one row and/or one column of the flushing devices (300) is provided at the edge of two sides of the floating platform (100), and the interval of the flushing devices (300) is the same as the interval of the flushing devices (300) of other rows or columns.

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