CN106386618A - Bucket foundation and umbrella-shaped tray assembling type net cage anchor foundation and construction method thereof - Google Patents

Abstract

The invention discloses a bucket foundation and umbrella-shaped tray assembling type net cage anchor foundation and a construction method thereof. The bucket foundation and umbrella-shaped tray assembling type net cage anchor foundation comprises a bucket foundation, a connecting bracket and two umbrella-shaped trays, wherein a support is arranged at the center of a bucket top of the bucket foundation; a mooring hole is formed in the upper middle part of the support; a support sleeve is arranged at the center of an upper end face of the connecting bracket; positioning columns located on two sides of the support sleeve are further arranged on the upper end face of the connecting bracket; a sleeve is arranged at the center of the bottom of each umbrella-shaped tray; in a working process, the support sleeve sleeves on the support of the bucket foundation; the mooring hole in the support is tied and fixed with one end of an anchor chain; each umbrella-shaped tray sleeves on the corresponding positioning column through the sleeve; the anchor foundation is composed of the bucket foundation, the connecting bracket and the two umbrella-shaped trays, and the anchor foundation sinks onto a seabed of a pre-set sea region; and crushed stone bags are added into openings of the umbrella-shaped trays and the crushed stone bags press the umbrella-shaped trays to form the net cage anchor foundation, so that an anchorage force is provided. The anchor foundation provided by the invention is simple in structure and great in whole rigidity and can provide relatively strong anchorage force.

Description

Barrel base and umbrella pallet assembled net cage anchor foundation and its construction method

Technical field：

The present invention relates to the anchor system of net cage for sea farming, assemble with umbrella pallet more particularly, to a kind of barrel base Formula net cage anchor foundation and its construction method.

Background technology：

About 16,000,000 hectares of oceanic area within China's 20m isobath, the oceanic area within 40m isobath about 50,000,000 is public Hectare, the development space of sea-farming is huge.But mariculture area of current China is concentrated mainly on the shallow gulf within 15 m isobaths Interior, and more than the 20 m depth of waters marine site utilization rate still less than 1%, far below the U.S., Japan and the level of developed countries such as Norway. Therefore, greatly develop the deep-water net cage culture of more than the 20 m depth of waters, be to solve one of new way of China's food supply guarantee.

However, all suffering from the attack of several Super Typhoons, the seawater cage in typhoon track coverage China coast year Damage is serious, leads to seawater cage culture industry to be in the state of " living at the mercy of the elements " to a certain extent.

Anchor system is foundation in water for the mariculture net cage, plays the fixing, effect of mooring net cage system.Anchoring system System inefficacy in inclement weather can lead to net cage directly to be damaged.If the deep-water net cage culture industry in Hainan Province is at annual superpower In wind in succession the strike of going to wreck property, suffer heavy losses, the disaster-stricken deep water mesh cage of wherein most be because anchor foundation destroy and quilt Blow away damage.Although the cost of anchor foundation accounts for the proportion of whole net cage system total price less, lead to whole after its inefficacy Net cage system is annihilated, and has the important function controlling net cage Existence of Global Stable.

At present, domestic seawater cage anchoring foundation main will have three kinds of modes：Anchor, timber anchor and clump anchor.Wherein ferrum Anchor is referred from the anchoring method of ship, and anchor body uses cast member, and mooring forces are directly proportional to anchor body weight, will obtain enough anchorings Power need to increase investment, and the larger anchor of weight needs special workboat ability operation, and is difficult to be accurately positioned, and advantage is to be used for sea The complex marine site in bottom；Timber anchor price is relatively cheap, typically requires timber stake footpath to be more than 40 cm, embedded depth more than 4.5 M, anchor line are not more than 17 ° with horizontal sea bed angle, but it has construction quality and is difficult to ensure that and the timber corrosion-prone shortcoming of appearance, fits Together in the depth of water shallower and for silt substrate marine site；Clump anchor is moderate, and mooring forces are directly proportional to clump weight, cement Adsorption between pier bottom and sea bed is limited, is susceptible to the phenomena of drag of anchor under severe sea condition, is suitable for husky mud or sand The marine site of matter substrate.

Therefore, on the basis of absorbing existing all kinds of anchor foundation advantages it is necessary to development of Construction is easy, low cost, The big new anchor foundation form of mooring forces.

Content of the invention：

In order to make up the deficiency of prior art problem, it is an object of the invention to provide a kind of barrel base and umbrella pallet assembled Net cage anchor foundation and its construction method, its structure is simple, and flexible arrangement is provided that larger anchor force.

Technical scheme is as follows：

Barrel base with umbrella pallet assembled net cage anchor foundation it is characterised in that include barrel base, one link Support and two umbrella pallets, the Tong Ding center of barrel base is provided with bearing, and the middle and upper part of bearing is provided with mooring hole；Link support Upper surface center is provided with bearing sleeve pipe, links pedestal upper end face and is additionally provided with the locating dowel positioned at bearing sleeve pipe both sides；Umbrella pallet Umbrella is become by circumferential reinforcement with radial direction reinforcing bar uniform welding, umbrella tray bottom center is provided with sleeve；During work, bearing casing pipe sleeve On the bearing of barrel base, on bearing, fixation is tied in mooring hole and anchor chain one end, and it is fixed that each umbrella pallet is entangled by sleeve Position post；Barrel base, link support, two umbrella pallets constitute anchor foundations, anchor foundation sinks down into the sea bed of predetermined maritime area, Throw in rubble bag towards in umbrella pallet mouth, rubble bag is pushed down umbrella pallet and constituted net cage anchor foundation.

Described barrel base is with umbrella pallet assembled net cage anchor foundation it is characterised in that described barrel base For the hollow cylindrical steel structure base of bottom opening, top seal, the Tong Ding center of barrel base is provided with bearing, in bearing Top is provided with mooring hole, and barrel base side wall is provided with inlet/outlet valve at top.

Described barrel base is with umbrella pallet assembled net cage anchor foundation it is characterised in that described umbrella pallet Every radial direction reinforcing bar constitute from the bottom margin bending that is inclined upwardly, every circumferential reinforcement is circular；Circumferential reinforcement welds Upside in radial direction reinforcing bar；Umbrella tray bottom center is provided with annular slab, and annular slab center is provided with sleeve upwards, in annular slab Outer wall is fixed with sleeve outer wall, radial direction reinforcement welding respectively.

Described barrel base and umbrella pallet assembled net cage anchor foundation are it is characterised in that described links support Along distribution substantially symmetrical about its central axis, its main body is a girder steel to entirety, and girder steel center is provided with bearing sleeve pipe, is provided with centered on bearing sleeve pipe The annular plate being connected with girder steel；It is provided with wing plate near girder steel two ends, wing plate is mutually perpendicular in the horizontal plane with girder steel, Wing plate and girder steel point of intersection are provided with longitudinal register post, and locating dowel is hollow steel pipe, and locating dowel top is provided with construction hole.

Described barrel base and umbrella pallet assembled net cage anchor foundation are it is characterised in that described links support On annular plate and girder steel in the same plane, and the internal diameter of annular plate with external diameter all the 1/ of barrel base top board diameter Value between 2 ~ 3/4.

Described barrel base and umbrella pallet assembled net cage anchor foundation are it is characterised in that described links support Upper bracket casing inner diameter is more than the external diameter of barrel base upper bracket.

Described barrel base and umbrella pallet assembled net cage anchor foundation are it is characterised in that described links support The length of upper flange is not less than umbrella tray bottom diameter.

Described barrel base is with umbrella pallet assembled net cage anchor foundation it is characterised in that described umbrella pallet On sleeve diameter be more than locating dowel external diameter.

Described barrel base and umbrella pallet assembled net cage anchor foundation are it is characterised in that described rubble bag is Fill block stone, the woven bag of rubble or gunny etc., and the minimum grain size size of filled block stone, rubble is more than ring on umbrella pallet Hole between reinforcing bar and radial direction reinforcing bar.

A kind of construction method of barrel base and umbrella pallet assembled net cage anchor foundation it is characterised in that include as Lower step：

1）, barrel base injection sea bed：Entangle bearing on barrel base linking support based on bearing sleeve pipe, then anchor chain One end is tied, is fixed on the mooring hole of bearing, then two umbrella pallets is entangled respectively based on sleeve and links support two ends Locating dowel, and bind on the construction hole of locating dowel construction auxiliary iron wire, then pass through inlet/outlet valve extraction negative pressure barrel-shaped Basis is heavy to be passed through to projected depth；

2）, be thrown into rubble bag and push down umbrella pallet：Construction auxiliary iron wire is stretched and is in vertical line states, along construction auxiliary ferrum The position that silk guides uniformly is thrown into enough rubble bags to construction auxiliary iron wire surrounding, so that rubble bag is equably fallen in two umbrellas In pallet, push down umbrella pallet；

3）, anchor foundation attitude check：Check the sinking attitude of umbrella pallet, if find umbrella pallet run-off the straight, should be past Acclivitous side is thrown into certain rubble bag again, makes umbrella pallet be in horizontality as far as possible；Confirm enough rubbles When bag falls in umbrella pallet and umbrella pallet can undertake set mooring forces, that is, complete the construction operation of net cage anchor foundation.

The present invention compared with prior art, has the advantage that：

1st, barrel base of the present invention sinks and passes through to projected depth, and it can bear larger horizontal loading；There is the umbrella of enough ballasts Shape pallet can bear larger vertical load.By barrel base with have after the umbrella tray combination of ballast, can give full play to each From advantage, the wind wave action of horizontal loading and vertical load random combine can be resisted；

2nd, the present invention carried umbrella support holder structure is simple, and weight is relatively small, and umbrella pallet is mainly by circumferential reinforcement and radial direction steel Muscle is welded, and can make the net form umbrella of different area according to different mooring forces demands, can catch that quantity is more, cumulative weight Larger rubble bag；

3rd, the ballast of the present invention carried umbrella pallet derives from rubble bag, and rubble packed enter the block stone of certain particle diameter and rubble, Its draw materials conveniently, with low cost.

Brief description

Fig. 1 is the umbrella pallet top view of the present invention.

Fig. 2 is the umbrella pallet upward view of the present invention.

Fig. 3 is the barrel base structural representation of the present invention.

Fig. 4 links support schematic diagram for the present invention's.

Fig. 5 be the present invention barrel base with link bracket assembled schematic diagram.

Fig. 6 is the top perspective view of the present invention.

Fig. 7 is the face upwarding stereogram of the present invention.

The use state figure that Fig. 8 is connected with net cage for the present invention.

Description of reference numerals：

1st, circumferential reinforcement；2nd, radial direction reinforcing bar；3rd, cannulated sleeve；4th, base circle plate；5th, barrel base；6th, bearing；7th, mooring hole； 8th, inlet/outlet valve；9th, link support；10th, wing plate；11st, annular plate；12nd, bearing sleeve pipe；13rd, hollow steel pipe；14th, construction hole； 15th, rubble bag；16th, anchor chain；17th, net cage.

Specific embodiment：

Referring to accompanying drawing：

A kind of barrel base and umbrella pallet assembled net cage anchor foundation, including a barrel base, 5, one links support 9 With two umbrella pallets, in the middle part of the bucket top of barrel base 5, it is provided with bearing 6, link and be provided with bearing sleeve pipe 12 at support 9 axis of symmetry, Link and near support 9 two ends, be provided with wing plate 10 and locating dowel 13；Umbrella pallet is by circumferential reinforcement 1 and radial direction reinforcing bar 2 uniform welding Form, entirety is axisymmetricly distributed, and is provided with the sleeve 3 of hollow at umbrella pallet axis of symmetry.It is based on bearing sleeve pipe linking support 9 12 bearings 6 entangling barrel base 5, then one end of anchor chain 16 is tied, is fixed on the mooring hole 7 of bearing 6, then two Umbrella pallet entangles, based on sleeve 3, the locating dowel 13 linking support 9 two ends respectively, and binds on the construction hole 14 of locating dowel 13 Construction auxiliary iron wire, then barrel base 5 suction penetration to projected depth, further along construction auxiliary iron wire guide position to Construction auxiliary iron wire surrounding is thrown into enough rubble bags 15, makes rubble bag 15 push down two umbrella pallets, thus forming net cage Anchor foundation.

Barrel base 5 is bottom opening, the hollow cylindrical steel structure base of top seal, in the bucket top of barrel base 5 Portion is provided with bearing 6, and the middle and upper part of bearing 6 is provided with mooring hole 7, and the near top side of barrel base 5 is provided with inlet/outlet valve 8；Logical Cross inlet/outlet valve 8 and extract negative pressure, barrel base 5 injection sea bed in the presence of negative pressure and deadweight can be made；Inlet/outlet valve 8 is arranged In bucket base side, it is in order that the support 9 that links on bucket top is touched less than inlet/outlet valve 8, in order to avoid causing the damage of inlet/outlet valve 8.

Umbrella pallet is integrally axisymmetricly distributed, and is formed with radial direction reinforcing bar 2 uniform welding by circumferential reinforcement 1, and profile is similar to In umbrella.Circumferential reinforcement 1 is rounded, and the shape of radial direction reinforcing bar 2 is followed successively by level and upper curved inclination.Circumferential reinforcement 1 is welded on footpath Top to reinforcing bar 2；After circumferential reinforcement 1 and radial direction reinforcing bar 2 uniform welding, form netted hole；Block stone, rubble in rubble bag 15 Grain size be more than the size of this netted hole, umbrella pallet can effectively catch block stone, rubble, form stable effectively joining Weight.

It is provided with the sleeve 3 of hollow, sleeve 3 bottom is provided with base circle plate 4 at umbrella pallet axis of symmetry；Base circle plate 4 Weld together with sleeve 3, radial direction reinforcing bar 2；The internal diameter of sleeve 3 is more than the external diameter of locating dowel 13.

The net form umbrella of different area can be made according to different mooring forces demands, that is, the area of umbrella pallet is bigger, its energy The quantity catching rubble bag is more, cumulative weight is larger, and the mooring forces that it is provided that are bigger.

Link support 9 entirety along distribution substantially symmetrical about its central axis, its main body is a girder steel, is provided with and props up at the symmetrical shaft position in middle part Cover for seat pipe 12, the internal diameter of bearing sleeve pipe 12 is more than the external diameter of barrel base 5 upper bracket 6；It is provided with bearing sleeve pipe 12 for axis of symmetry Annular plate 11, annular plate 11 with girder steel in the same plane, and the internal diameter of annular plate 11 with external diameter all in barrel base 5 Value between the 1/2 ~ 3/4 of top board diameter；The effect of annular plate 11 is to make to link to have between support 9 and barrel base 5 top board The contact of larger area, it is to avoid link support 9 run-off the straight and distortion, favourable to the stability in the large of anchor foundation.

It is provided with wing plate 10 linking, wing plate 10 and girder steel are mutually perpendicular in the horizontal plane, wing plate near support 9 girder steel two ends 10 length is not less than the diameter of umbrella tray bottom centrifugal disc；It is provided with longitudinally perpendicular determining in wing plate 10 with girder steel point of intersection Position post 13, the top of locating dowel 13 is provided with construction hole 14.

Barrel base 5, umbrella pallet are steel or ferrous material with each part linking support 9, and each part passes through weldering It is connected into entirety in succession；Barrel base 5, umbrella pallet and the intensity linking each part of support 9 and entirety, should be able to undertake all kinds of operating modes Mooring forces that Lower chains pass over and without flexing and inefficacy.

Rubble bag 15 is to fill block stone, the woven bag of rubble or gunny etc., and the minimum grain size chi of filled block stone, rubble Hole between circumferential reinforcement 1 and radial direction reinforcing bar 2 on the very little pallet more than umbrella；Rubble bag 15 weaves after sinking to marine a period of time Bag or gunny meeting burn into are aging and broken, and final block stone, rubble can freely be scattered and come；As long as the particle diameter chi of block stone, rubble Very little sufficiently large, it does not spill hole between circumferential reinforcement 1 and radial direction reinforcing bar 2, and the stability of umbrella pallet would not be subject to To impact.

Circumferential reinforcement 1 or radial direction reinforcing bar 2 on umbrella pallet, if occur certain under the differential pressure effect of rubble bag 15 Deformation, it does not typically interfere with the normal performance of anchor foundation mooring forces.

Umbrella pallet is in integrally flat axial symmetry umbrella, and its center of gravity is relatively low, and resistance to capsizing is stronger；Umbrella pallet surrounding Certain angle that is inclined upwardly so that the block stone in rubble bag 15, rubble not readily disengage under action of ocean current, umbrella of escaping support Disk body；Preferably, the acclivitous angle of umbrella pallet surrounding（Angle with horizontal plane）Between 10 ~ 30.

A kind of barrel base and the construction method of umbrella pallet assembled net cage anchor foundation, are described in detail as follows：

1）, barrel base injection sea bed

Entangle bearing 6 on barrel base 5 based on bearing sleeve pipe 12 linking support 9, then one end of anchor chain 16 is tied, fixing On the mooring hole 7 of bearing 6, then two umbrella pallets are entangled the locating dowel linking support 9 two ends respectively based on sleeve 3 13, and construction auxiliary iron wire is bound on the construction hole 14 of locating dowel 13, then negative pressure is extracted barrel-shaped base by inlet/outlet valve 8 Plinth 5 sinks and passes through to projected depth.

The heavy of barrel base 5 passes through the distance for drum head to bucket top for the depth；Be simultaneously based on anchor chain 16, construction auxiliary iron wire with auxiliary Help rod member barrel base 5 and link support 9 vertical stand on predetermined sea bed, by extract negative pressure so that barrel base 5 is gradually passed through Enter sea bed；If barrel base 5 sinks during passing through, and the less inclination of amplitude occurs, it normally wields influence relatively to anchorage effect Little.

2）, be thrown into rubble bag and push down umbrella pallet

Construction auxiliary iron wire is stretched and is in vertical line states, assist the position of iron wire guide to construction auxiliary iron wire along construction Surrounding is uniformly thrown into enough rubble bags 15, so that rubble bag 15 is equably fallen in two umbrella pallets, push down umbrella pallet.

In construction, water scope should be entered according to what the diameter of umbrella pallet delimited rubble bag 15；Rubble bag 15 enter water scope, Should be slightly less than centered on vertical line states construction auxiliary iron wire, the circular scope as radius for the umbrella pallet.And rubble bag 15 sinks Put forward sequence, symmetrically, equably should be thrown in centered on the construction auxiliary iron wire of vertical line states, to avoid umbrella pallet in inequality Run-off the straight under even load action；Rubble bag 15 more reasonably stacks shape on umbrella pallet：With applying of vertical line states Symmetry distribution centered on work auxiliary iron wire, middle part is slightly higher, and surrounding is lower slightly, and Mass Distribution is uniform.

3）, anchor foundation attitude check

Check the sinking attitude of umbrella pallet, if find umbrella pallet run-off the straight, should be thrown into again toward acclivitous side Certain rubble bag 15, makes umbrella pallet be in horizontality as far as possible；Confirm that enough rubble bags 15 fall in umbrella pallet And umbrella pallet is when can undertake set mooring forces, that is, complete the construction operation of net cage anchor foundation.

Net cage relies primarily on anchor foundation and provides mooring forces, and the deformation to anchor foundation has no special requirements, if rubble bag 15 ballasts make umbrella pallet that the less inclination of amplitude to occur, and it is less to normally wielding influence of anchorage effect；Due to early stage anchor Chain 16 is connected with mooring hole 7, therefore is not required to send diver to carry out mooring operation under water again.

Barrel base of the present invention can bear larger horizontal loading, have enough ballasts umbrella pallet can bear larger Vertical load, barrel base with have after the umbrella tray combination of ballast, give full play to respective advantage, net cage can be enable to hold By larger random seas load；Umbrella support holder structure is simple, and weight is relatively small, and its ballast derives from rubble bag, and rubble Packed enter block stone and rubble, its draw materials conveniently, with low cost；Rigidity of the present invention is big, resistance to plucking and resistance to capsizing are strong, is provided that Larger mooring forces.

The present invention is not limited to above-mentioned specific embodiment, according to the above, according to the ordinary technical knowledge of this area And customary means, under the premise of without departing from the present invention above-mentioned basic fundamental thought, the present invention can also make other various ways Equivalent modifications, replacement or change, be within the scope of the present invention.

Claims (10)

1. a kind of barrel base and umbrella pallet assembled net cage anchor foundation it is characterised in that include a barrel base, one Individual link support and two umbrella pallets, the Tong Ding center of barrel base is provided with bearing, and the middle and upper part of bearing is provided with mooring hole；Even It is that pedestal upper end face center is provided with bearing sleeve pipe, link pedestal upper end face and be additionally provided with the locating dowel positioned at bearing sleeve pipe both sides；Umbrella Shape pallet becomes umbrella by circumferential reinforcement with radial direction reinforcing bar uniform welding, and umbrella tray bottom center is provided with sleeve；During work, bearing On the bearing of barrel base, on bearing, fixation is tied in mooring hole and anchor chain one end to casing pipe sleeve, and each umbrella pallet passes through sleeve Entangle locating dowel；Barrel base, link support, two umbrella pallets constitute anchor foundations, anchor foundation sinks down into predetermined maritime area Sea bed, towards in umbrella pallet mouth throw in rubble bag, rubble bag push down umbrella pallet constitute net cage anchor foundation.

2. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Barrel base be bottom opening, the hollow cylindrical steel structure base of top seal, the Tong Ding center of barrel base is provided with Seat, the middle and upper part of bearing is provided with mooring hole, and barrel base side wall is provided with inlet/outlet valve at top.

3. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Every radial direction reinforcing bar of umbrella pallet constitute from the bottom margin bending that is inclined upwardly, every circumferential reinforcement is circular；Ring To reinforcement welding in the upside of radial direction reinforcing bar；Umbrella tray bottom center is provided with annular slab, and annular slab center is provided with set upwards Cylinder, annular slab inside and outside wall is fixed with sleeve outer wall, radial direction reinforcement welding respectively.

4. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Link support overall along distribution substantially symmetrical about its central axis, its main body is a girder steel, and girder steel center is provided with bearing sleeve pipe, bearing sleeve pipe Centered on be provided with the annular plate being connected with girder steel；It is provided with wing plate near girder steel two ends, wing plate is with girder steel in the horizontal plane It is mutually perpendicular to, is provided with longitudinal register post in wing plate and girder steel point of intersection, locating dowel is hollow steel pipe, and locating dowel top is provided with construction Hole.

5. barrel base according to claim 4 with umbrella pallet assembled net cage anchor foundation it is characterised in that described The annular plate linking on support and girder steel in the same plane, and the internal diameter of annular plate with external diameter all on barrel base top Value between the 1/2 ~ 3/4 of board diameter.

6. barrel base according to claim 4 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Link support upper bracket casing inner diameter be more than barrel base upper bracket external diameter.

7. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Link support upper flange length be not less than umbrella tray bottom diameter.

8. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Umbrella pallet on sleeve diameter be more than locating dowel external diameter.

9. barrel base according to claim 1 with umbrella pallet assembled net cage anchor foundation it is characterised in that described Rubble bag be to fill block stone, the woven bag of rubble or gunny etc., and the minimum grain size size of filled block stone, rubble be more than umbrella Hole between circumferential reinforcement and radial direction reinforcing bar on shape pallet.

10. a kind of barrel base and the construction method of umbrella pallet assembled net cage anchor foundation are it is characterised in that include as follows Step：

1）, barrel base injection sea bed：Entangle bearing on barrel base linking support based on bearing sleeve pipe, then anchor chain One end is tied, is fixed on the mooring hole of bearing, then two umbrella pallets is entangled respectively based on sleeve and links support two ends Locating dowel, and bind on the construction hole of locating dowel construction auxiliary iron wire, then pass through inlet/outlet valve extraction negative pressure barrel-shaped Basis is heavy to be passed through to projected depth；

2）, be thrown into rubble bag and push down umbrella pallet：Construction auxiliary iron wire is stretched and is in vertical line states, along construction auxiliary ferrum The position that silk guides uniformly is thrown into enough rubble bags to construction auxiliary iron wire surrounding, so that rubble bag is equably fallen in two umbrellas In pallet, push down umbrella pallet；

3）, anchor foundation attitude check：Check the sinking attitude of umbrella pallet, if find umbrella pallet run-off the straight, should be past Acclivitous side is thrown into certain rubble bag again, makes umbrella pallet be in horizontality as far as possible；Confirm enough rubbles When bag falls in umbrella pallet and umbrella pallet can undertake set mooring forces, that is, complete the construction operation of net cage anchor foundation.