CN114457805A - Underwater geotechnical pad paving equipment and construction method thereof - Google Patents

Abstract

The invention belongs to the technical field of underwater building construction, and provides underwater geotechnical pad paving equipment and a construction method thereof, aiming at the problems that a geotechnical pad is easy to be impacted by water flow in the sinking process, particularly in coastal engineering, the water depth is very deep, the change of subsurface flow in water is large, the geotechnical pad in the sinking process is easy to be damaged, the sinking direction of the geotechnical pad is changed, and finally, the problems of large deviation of the installation position of the geotechnical pad, flanging, wrinkling and the like are caused. The paving roller with the rolled geotechnical cushion is firstly settled to the water bottom, and is laid and installed in a rolling way to be close to the mud surface, and stones are pressed along with spreading. The adaptive capacity to the depth of water region is strong, and the in-process of paving, the geotechnological bed course receives the rivers influence less, paves and is difficult for taking place phenomenons such as damage, turn-ups and fold, guarantees the position precision of installation.

Description

Underwater geotechnical pad paving equipment and construction method thereof

Technical Field

The invention belongs to the technical field of underwater building construction, and particularly relates to underwater geotechnical pad paving equipment and a construction method thereof.

Background

In port and coastal engineering, such as wharfs, storage yards and roads, revetments, breakwaters and beach cofferdam engineering, all are low-lying coastal areas and are often soft soil foundations, so that soft foundation reinforcement is a common problem in port and coastal engineering. The geotechnical material has the effects of reinforcement, reverse filtration, isolation, protection and the like, and is increasingly applied to soft foundation treatment of the projects. The geotextile is used as a novel building material, and is widely applied to coastal engineering at present due to the unique advantages, such as engineering of seabed slope treatment, coastal building foundation treatment and the like.

The laying of the geotechnical cushion layer is an important link of geotechnical cushion layer construction, the geotechnical cushion layer is laid underwater, the geotechnical cushion is generally rolled and installed on a laying ship in the traditional construction method, the beginning edge of the geotechnical cushion is fixed on the underwater mud surface, then the laying ship retreats to lay the geotechnical cushion, and bagged broken stones are bound on the geotechnical cushion in the laying process so that the geotechnical cushion sinks into water. In the method, the geotechnical pad is easy to be impacted by water flow in the sinking process, particularly in coastal engineering, the water depth is very deep, the subsurface flow in water changes greatly, the geotechnical pad in the sinking process is easy to be damaged, the sinking direction of the geotechnical pad is changed, and finally the problems of large deviation of the installation position of the geotechnical pad, flanging, wrinkling and the like are caused. Therefore, the research on a novel underwater geotechnical pad paving device and a construction method thereof has important significance.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the underwater geotechnical pad paving equipment so as to ensure the stability of underwater geotechnical pad paving and improve the paving efficiency and the paving quality.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an underwater geomad paving apparatus comprising:

the stone throwing device comprises a paving system, a stone throwing system and a fixing device;

the laying system comprises a laying ship, a laying rolling shaft and a driving device, wherein the driving device is arranged on the laying ship, and a driving end of the driving device is connected with the laying rolling shaft;

the arrangement rolling shaft is provided with a geotechnical cushion layer which can be rolled on the arrangement rolling shaft, and one end of the geotechnical cushion layer is connected with the fixing device;

the stone throwing system comprises a stone throwing ship, a stone block and a stone throwing device, wherein the stone block and the stone throwing device are arranged on the stone throwing ship, and the stone throwing ship is arranged on one side of the spread ship.

Preferably, the driving device comprises a winch, a guiding device is further arranged on the spread ship, a guiding steel rope is arranged on the guiding device, one end of the guiding steel rope is connected with the driving end of the winch, the other end of the guiding steel rope is connected with the spread ship, and the spread rolling shaft is in sliding fit with the guiding steel rope.

Preferably, the guiding device comprises a guiding bracket, a guiding roller assembly is arranged on the guiding bracket, and the guiding steel rope passes through the guiding roller assembly.

Preferably, the guide support is of an inverted-L-shaped structure, the bottom end of the guide support is fixed to the laying ship, the guide roller assembly is arranged at the top end of the guide support, and the winch is arranged at a position close to the bottom end of the guide support;

the guide roller assembly comprises a roller support, a roller assembly and a roller shaft, the roller support is arranged on the guide support, the roller shaft is arranged on the roller support, the roller assembly is arranged on the roller shaft and is in running fit with the roller shaft, and the guide steel rope penetrates through the roller assembly.

Preferably, the number of the guide supports is two, the two guide supports are arranged on the same side of the spread ship, the position of the winch corresponds to the position of the guide supports, the distance between the guide supports is larger than the length of the spread rolling shaft, and connecting shaft pieces for the guide steel ropes to penetrate through are arranged at two ends of the spread rolling shaft.

Preferably, the fixing device comprises two or more anchoring forks, and one end of each anchoring fork is provided with a connecting rope connected with the geotechnical cushion layer.

Preferably, the anchoring fork piece comprises an anchoring rod, one end of the anchoring rod is provided with an annular connecting portion connected with the connecting rope, and the other end of the anchoring rod is provided with a plurality of fork heads arranged in an umbrella shape.

Preferably, the stone throwing devices are excavators, and the number of the stone throwing devices is two or more.

Preferably, the arrangement ship is a self-propelled ship, and a GPS positioning device is arranged in the arrangement ship.

The invention also comprises a construction method of the underwater geotechnical pad paving equipment, which comprises the following steps:

s1: setting the size of the unit geotechnical cushion layers, and splicing the smaller unit geotechnical cushion layers to form a whole geotechnical cushion layer;

s2, arranging the manufactured geotechnical cushion on the arrangement rolling shaft and conveying the geotechnical cushion to an arrangement ship;

s3, drawing a geotechnical cushion laying diagram for a construction area needing laying of a geotechnical cushion according to the size and the lap joint requirement of the unit geotechnical cushion, and introducing the laying diagram into a construction coordinate system;

s4, using the GPS positioning device of the laying ship to drive the laying ship into the installation position of the geotextile of the laying unit in the construction area, and carrying out installation positioning to mark the initial edge and the tail edge of the geotextile cushion layer;

s5, hoisting the paving rollers out of the deck of the paving ship through the driving device and the guiding device;

s6, inserting the anchoring fork into the water bottom surface and at a position 10m away from the starting edge of the geotechnical cushion layer to be laid;

s7, starting the driving device to enable the geotechnical cushion layer on the paving and arranging roller to be arranged on the water bottom surface;

s8: unfastening the geotechnical cushion layer, adjusting the starting edge of the geotechnical cushion layer to the marked installation position, connecting the starting edge of the geotechnical cushion layer with the anchoring fork piece by using the connecting rope, and tensioning the connecting rope;

s9, moving the laying ship along the laying direction of the geotechnical cushion layer until the geotechnical cushion layer on the laying roller is completely laid;

s10: carrying out riprap ballast on the paved geotechnical cushion layer by using a riprap device on a riprap boat, wherein the riprap operation is carried out following the paving of the geotechnical cushion layer;

s11: and detecting whether the paving position of the geotechnical cushion layer of the unit meets the requirement, and after rechecking meets the requirement, starting the paving work of the geotechnical cushion layer of the next unit, and sequentially circulating until all the geotechnical cushion layers are paved.

Compared with the prior art, the invention has the beneficial effects that:

to geotechnological pad in this scheme at the in-process that sinks, receive the impact of rivers easily, especially in coastal engineering, the depth of water is very dark, and the change of aquatic undercurrent change will sink the geotechnological pad of in-process very easily and destroy to change geotechnological pad's the direction of sinking, finally cause geotechnological pad mounted position deviation great, turn-ups and fold scheduling problem. The paving roller with the rolled geotechnical cushion is firstly settled to the water bottom, and is laid and installed in a rolling way to be close to the mud surface, and stones are pressed along with spreading. The adaptive capacity to the depth of water region is strong, and the in-process of paving, the geotechnological bed course receives the rivers influence less, paves and is difficult for taking place phenomenons such as damage, turn-ups and fold, guarantees the position precision of installation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the guide bracket of the present invention.

Fig. 3 is a schematic structural view of a guide roller assembly of the present invention.

FIG. 4 is a schematic structural view of the anchoring fork of the present invention.

Wherein:

1-a laying ship, 2-a laying roller, 3-a winch, 4-a guide bracket, 5-a roller support, 6-a roller piece, 7-a roller shaft, 8-a guide steel rope, 9-a geotechnical cushion layer, 10-an anchor rod, 11-a connecting rope, 12-a fork, 13-a stone throwing ship and 14-a stone throwing device.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Example (b):

as shown in fig. 1-4, the present embodiment provides an underwater geomembrane paving apparatus comprising:

the stone throwing device comprises a paving system, a stone throwing system and a fixing device;

the arrangement system comprises an arrangement ship 1, an arrangement rolling shaft 2 and a driving device;

the driving device is arranged on the laying ship 1, the driving end of the driving device is connected with the laying roller shaft 2, in the embodiment, the driving device comprises a winch 3, a guiding device is further arranged on the laying ship 1, the guiding device comprises a guiding support 4, a guiding roller assembly is arranged on the guiding support 4, the guiding roller assembly comprises a roller support 5, a roller assembly 6 and a roller shaft 7, the roller support 5 is arranged on the guiding support 4, the roller shaft 7 is arranged on the roller support 5, the roller assembly 6 is arranged on the roller shaft 7 and is in rotating fit with the roller shaft 7, a guiding steel rope 8 is arranged on the guiding device, the guiding steel rope 8 penetrates through the roller assembly 6, one end of the guiding steel rope 8 is connected with the driving end of the winch 3, the other end of the guiding steel rope is connected with the laying ship 1, and the laying roller shaft 2 is in sliding fit with the guiding steel rope 8;

to the structure and the setting of guide bracket 4, in this embodiment, it is concrete, guide bracket 4 is the type of falling L structure, the bottom mounting of guide bracket 4 is spread row ship 1, guide roller assembly locates the top of guide bracket 4, hoist engine 3 sets up in the bottom position department that is close to guide bracket 4, and simultaneously, the quantity of guide bracket 4 is two and locates and spread row ship 1 with one side, hoist engine 3's position is corresponding with the position of guide bracket 4, interval between the guide bracket 4 is greater than the length of arranging roller bearing 2, the both ends of arranging roller bearing 2 are equipped with the connecting axle spare that supplies direction steel cable 8 to pass.

Be equipped with on the roller bearing 2 of berthing and arranging and can roll up geotechnological bed course 9 on above-mentioned roller bearing 2 of berthing, the one end and the fixing device of geotechnological bed course 9 are connected, in this embodiment, fixing device includes the anchor fork spare, the quantity of anchor fork spare is two or more and along the extending direction equipartition on the initiating edge of geotechnological bed course 9, the one end of anchor fork spare is equipped with the rope 11 of being connected with geotechnological bed course 9, the concrete structure of anchor fork spare is as follows, including anchor pole 10, the one end of anchor pole 10 is equipped with the annular connecting portion of being connected with rope 11, the other end is equipped with a plurality of prongs 12 that are the umbrella setting.

The stone throwing system comprises a stone throwing boat 13, a stone block and a stone throwing device 14, wherein the stone block and stone throwing device 14 is arranged on the stone throwing boat 13, and the stone throwing boat 13 is arranged on one side of the laying boat 1.

In this embodiment, the stone slinger 14 is an excavator, and the number of the stone slinger is two or more.

Specifically, the spread ship 1 is a self-propelled ship, and a GPS positioning device is arranged in the spread ship 1.

The invention also comprises a construction method of the underwater geotechnical pad paving equipment, which comprises the following steps:

s1: setting the size of the unit geotechnical cushion layer 9, and splicing the smaller unit geotechnical cushion layers 9 to form a whole geotechnical cushion layer 9;

s2, arranging the manufactured geotechnical cushion 9 on the arrangement rolling shaft 2 and transporting to the arrangement ship 1;

s3, drawing a laying drawing of the geotechnical cushion 9 for a construction area where the geotechnical cushion 9 is required to be laid according to the size and the lap joint requirement of the unit geotechnical cushion 9, and introducing the laying drawing into a construction coordinate system;

s4, driving the laying ship 1 into a mounting position of the geotextile of the laying unit in the construction area by using the GPS positioning device of the laying ship 1, and carrying out mounting and positioning to mark the positions of the start edge and the tail edge of the mounting of the geotextile cushion 9;

s5, hoisting the paving rollers 2 to the outside of the deck of the paving ship 1 through a driving device and a guiding device;

s6, inserting the anchoring fork into the water bottom surface and at a position 10m away from the starting edge where the geotechnical cushion layer 9 needs to be laid;

s7, starting a driving device to enable the geotechnical cushion 9 on the paving roller 2 to be arranged at the water bottom surface;

s8: unfastening the geotechnical cushion layer 9, adjusting the starting edge of the geotechnical cushion layer 9 to the marked installation position, connecting the starting edge of the geotechnical cushion layer 9 with the anchoring fork by using the connecting rope 11, and tensioning the connecting rope 11;

s9, moving the laying ship 1 along the laying direction of the geotechnical cushion 9 until the geotechnical cushion 9 on the laying roller 2 is completely laid;

s10: carrying out riprap ballast on the paved geotechnical cushion layer 9 by using a riprap device 14 on a riprap boat 13, wherein the riprap operation is carried out next to the paving of the geotechnical cushion layer 9;

s11: and detecting whether the paving position of the geotechnical cushion layer 9 of the unit meets the requirement, and after rechecking meets the requirement, starting the paving work of the geotechnical cushion layer 9 of the next unit, and sequentially circulating until all the geotechnical cushion layers 9 are paved.

In this embodiment to the geotechnique's pad at the in-process that sinks, receive the impact of rivers easily, especially in coastal engineering, the depth of water is very deep, the change of aquatic undercurrent change is big, the geotechnique's pad that will sink the in-process very easily destroys, and change the direction of sinking of geotechnique's pad, it is great finally to cause geotechnological pad mounted position deviation, turn-ups and fold scheduling problem, the structure and the flow of laying geotechnological pad layer 9 have been optimized, first of all, structurally, the anchor fork spare of setting is fixed in the water bottom surface, the geotechnological pad layer 9 is connected through connecting rope 11 to the other end, connecting rope 11 is the taut state simultaneously, guarantee geotechnological pad layer 9 and keep constantly being taut state in paving, prevent to change because the depth of water undercurrent change is great and make geotechnological pad layer 9 get the shape change. The stone throwing system throws the stone operation following paving of geotechnological bed course 9 simultaneously, accomplishes along with paving, guarantees the direction of sinking of geotechnological bed course 9 through the action of gravity of stone, prevents that geotechnological bed course mounted position deviation is great, turn-ups and fold scheduling problem.

In this embodiment, the GPS positioning device of the spread ship 1 is used, so that the spreading position of the geotechnical cushion layer 9 can be accurately determined, and the overall spreading quality can be ensured.

In this embodiment, the position of the windlass 3 corresponds to the position of the guide bracket 4, and each windlass 3 controls the rotation of one side of the paving roller 2, so that the paving flatness of the geotechnical cushion layer 9 can be accurately controlled and adjusted.

In this embodiment, the other end of anchor pole 10 is equipped with a plurality of prongs 12 that are the umbelliform setting, and is more with the area of contact of water bottom surface, guarantees to be fixed in the stability of water bottom surface, prevents the pine of anchor fork spare and takes off to guarantee the stability of the process of paving of geotechnological bed course 9, guarantee holistic quality of paving.

In summary, the method of the embodiment has strong adaptability to water depth, and in the paving process, the geotechnical cushion layer 9 is less affected by water flow, and is not easy to damage, turn over and fold, and the installation position precision is also ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (10)

1. An underwater geotechnical pad paving apparatus comprising:

the stone throwing device comprises a paving system, a stone throwing system and a fixing device;

the laying system comprises a laying ship, a laying rolling shaft and a driving device, wherein the driving device is arranged on the laying ship, and a driving end of the driving device is connected with the laying rolling shaft;

the arrangement rolling shaft is provided with a geotechnical cushion layer which can be rolled on the arrangement rolling shaft, and one end of the geotechnical cushion layer is connected with the fixing device;

the stone throwing system comprises a stone throwing ship, a stone block and a stone throwing device, wherein the stone block and the stone throwing device are arranged on the stone throwing ship, and the stone throwing ship is arranged on one side of the spread ship.

2. The underwater geotechnical pad paving device according to claim 1, wherein the driving device comprises a winch, a guiding device is further arranged on the laying ship, a guiding steel rope is arranged on the guiding device, one end of the guiding steel rope is connected with a driving end of the winch, the other end of the guiding steel rope is connected with the laying ship, and the laying roller is in sliding fit with the guiding steel rope.

3. The underwater geomembrane paving apparatus according to claim 2, wherein the guiding means comprises a guide bracket on which a guide roller assembly is provided, the guide wire rope passing through the guide roller assembly.

4. The underwater geotechnical pad paving device according to claim 3, wherein the guide bracket is of an inverted L-shaped structure, the bottom end of the guide bracket is fixed to the laying ship, the guide roller assemblies are arranged at the top end of the guide bracket, and the winch is arranged at a position close to the bottom end of the guide bracket;

the guide roller assembly comprises a roller support, a roller assembly and a roller shaft, the roller support is arranged on the guide support, the roller shaft is arranged on the roller support, the roller assembly is arranged on the roller shaft and is in running fit with the roller shaft, and the guide steel rope penetrates through the roller assembly.

5. The underwater geotechnical pad paving device according to claim 4, wherein the number of the guide supports is two and the two guide supports are arranged on the same side of the paving ship, the position of the winch corresponds to the position of the guide supports, the distance between the guide supports is larger than the length of the paving rollers, and connecting shaft pieces for the guide steel ropes to pass through are arranged at two ends of the paving rollers.

6. The underwater geotechnical pad paving apparatus of claim 1 wherein the fixing means includes two or more anchoring forks, and a connecting rope connected to the geotechnical pad layer is provided at one end of the anchoring forks.

7. The underwater geotechnical pad paving apparatus of claim 6 wherein the anchoring forks include an anchoring bar having an annular connecting portion at one end connected to the connecting rope and a plurality of forks at the other end in an umbrella configuration.

8. The underwater geomembrane paving apparatus according to claim 1, wherein the stone slinging devices are excavators, and the number is two or more.

9. The underwater geotechnical mat spreading apparatus according to claim 1, wherein the spread ship is a self-propelled ship, and a GPS positioning device is arranged in the spread ship.

10. A construction method of an underwater mat spreading apparatus using the underwater mat spreading apparatus of any one of claims 1 to 9, comprising the steps of:

s1: setting the size of the unit geotechnical cushion layers, and splicing the smaller unit geotechnical cushion layers to form a whole geotechnical cushion layer;

s2, arranging the manufactured geotechnical cushion on the arrangement rolling shaft and conveying the geotechnical cushion to an arrangement ship;

s3, drawing a geotechnical cushion laying diagram for a construction area needing laying of the geotechnical cushion according to the size and the lap joint requirement of the unit geotechnical cushion, and introducing the laying diagram into a construction coordinate system;

s4, using the GPS positioning device of the laying ship to drive the laying ship into the installation position of the geotextile of the laying unit in the construction area, and carrying out installation positioning to mark the initial edge and the tail edge of the geotextile cushion layer;

s5, hoisting the paving rollers out of the deck of the paving ship through the driving device and the guiding device;

s6, inserting the anchoring fork into the water bottom surface and at a position 10m away from the starting edge of the geotechnical cushion layer to be laid;

s7, starting the driving device to enable the geotechnical cushion layer on the paving and arranging roller to be arranged on the water bottom surface;

s8: unfastening the geotechnical cushion layer, adjusting the starting edge of the geotechnical cushion layer to the marked installation position, connecting the starting edge of the geotechnical cushion layer with the anchoring fork piece by using the connecting rope, and tensioning the connecting rope;

s9, moving the laying ship along the laying direction of the geotechnical cushion layer until the geotechnical cushion layer on the laying roller is completely laid;

s10: carrying out riprap ballast on the paved geotechnical cushion layer by using a riprap device on a riprap boat, wherein the riprap operation is carried out following the paving of the geotechnical cushion layer;

s11: and detecting whether the paving position of the geotechnical cushion layer of the unit meets the requirement, and after rechecking meets the requirement, starting the paving work of the geotechnical cushion layer of the next unit, and sequentially circulating until all the geotechnical cushion layers are paved.

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