CN112127324A - Construction method for filling belt type sand blowing ship into land - Google Patents

Construction method for filling belt type sand blowing ship into land Download PDF

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Publication number
CN112127324A
CN112127324A CN202011122812.5A CN202011122812A CN112127324A CN 112127324 A CN112127324 A CN 112127324A CN 202011122812 A CN202011122812 A CN 202011122812A CN 112127324 A CN112127324 A CN 112127324A
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CN
China
Prior art keywords
sand
blowing
boat
unit block
construction
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Pending
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CN202011122812.5A
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Chinese (zh)
Inventor
莫建波
俞峥巍
王强
徐飞
丁雄健
卢进
孙鹏鹏
赵彪
李少俊
周嘉诚
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Shanghai Communications Construction Contracting Co ltd
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Shanghai Communications Construction Contracting Co ltd
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Publication date
Application filed by Shanghai Communications Construction Contracting Co ltd filed Critical Shanghai Communications Construction Contracting Co ltd
Priority to CN202011122812.5A priority Critical patent/CN112127324A/en
Publication of CN112127324A publication Critical patent/CN112127324A/en
Pending legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/18—Reclamation of land from water or marshes
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/04—Foundations produced by soil stabilisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins

Abstract

The invention discloses a construction method for filling land by a belt type sand blowing ship, which comprises the following steps: step one, constructing a sand dam at the edge of a construction area through a belt type sand blowing ship to form a sand dam surrounding area; step two, placing samples in the sand dam surrounding area and dividing a plurality of grid-shaped blow filling unit blocks; thirdly, the sand-blasting vessel full-load sand reaches the sand dam surrounding area, and is positioned by utilizing two anchors and anchor chains of a bow at a certain distance from the hydraulic reclamation unit block, and then a belt conveyor head of the sand-blasting vessel swings left and right in the hydraulic reclamation unit block uniformly to perform sand blasting; driving the sand blowing ship away from the sand dam surrounding area, reaching a sand production area, and sucking sand and loading the sand into a cabin at a specified position by using a sand sucking pipe; step five, sailing to a sand dam surrounding area after a cabin of the sand blowing ship is fully loaded, and performing sand throwing construction on a next blowing and filling unit block to be thrown and filled; and step six, repeating the step three to the step five until sand throwing construction of all the hydraulic fill unit blocks in the sand dam surrounding area is completed. The construction method ensures even ballast of the land forming area.

Description

Construction method for filling belt type sand blowing ship into land
Technical Field
The invention relates to a construction method for filling and reclamation land by a belt type sand blowing ship.
Background
Along with the increasing coastal dredger fill land making engineering, sand-blowing ships are more and more in types, such as pump suction type, cutter suction type, drag suction type and the like. In the coastal region of south east Asia, the sand quality is mostly medium grit, suitably uses belt formula sand blowing boat, and belt formula sand blowing boat admittance threshold is low moreover, the efficiency of construction is high, construction cost low grade advantage. However, the belt sand blower is mainly used for the transportation of sand and the loading and unloading construction of a wharf, and the belt sand blower is different from a cutter suction boat and a drag suction boat, is only provided with a boat AIS system and does not have a GPS positioning system, so that the sand can not be accurately positioned and accurately thrown only by self equipment, and the sand dam reclamation and the surrounding area layer throwing filling can not be completed according to the determined whole construction process. If the sludge in the construction area is thick, the distribution thickness is different from 2m to 9m, and if a direct hydraulic fill unidirectional propulsion hydraulic fill method is adopted, the settlement inconsistency and sludge heave of a sludge deep layer in the construction period cannot be avoided, so that the foundation stability in the engineering area is not facilitated, and the terrain change of the surrounding water area is easily caused;
disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a construction method for hydraulic reclamation of a belt type sand blowing boat, which ensures uniform ballast in a reclamation area, meets the engineering quality requirement and ensures the construction safety.
The purpose of the invention is realized as follows: a construction method for filling a belt type sand blowing ship into land comprises the following steps:
step one, constructing a sand dam at the edge of a construction area by using a belt type sand blowing ship to form a sand dam surrounding area; the belt type sand blowing boat is decelerated to be undetermined after reaching a construction point, a GPS is manually held at the bow for positioning, the accurate direction of a belt conveyor head of the sand blowing boat is measured and calculated, the belt conveyor head is aligned to an area to be cast and filled, a host of the sand blowing boat is started for fixed-point cast and filling construction, the sand blowing boat is shifted to the next construction point until the sand dam is constructed after reaching the design set elevation requirement after the sand body is drained;
step two, placing samples in the sand dam surrounding area to divide a plurality of grid-shaped blow filling unit blocks, wherein the size of each blow filling unit block is 50m multiplied by 50 m;
thirdly, the belt type sand blowing boat fully loaded with sand arrives at the sand dam surrounding area, and is positioned by using two anchors on the bow of the sand blowing boat, namely the sand blowing boat throws down the two anchors at a certain distance from a hydraulic filling unit block to be thrown and filled, the sand blowing boat puts down two anchor chains which are connected with the two anchors in a one-to-one correspondence manner while slowly moving, and puts down chain stoppers of the two anchor chains when moving to the hydraulic filling unit block, and locks the two anchor chains; at the moment, the main machine of the sand blowing boat does not stop, the power of the main machine and the pulling force of the two anchor chains form balance, so that the sand blowing boat is accurately positioned, and then sand throwing is started when the belt conveyor head of the sand blowing boat is positioned to the bottom side line of the hydraulic filling unit block; in the sand throwing process, each hydraulic reclamation unit block is divided into three arc-shaped bands, one arc-shaped band is thrown and filled once at each fixed point of the sand dredger, and each hydraulic reclamation unit block is thrown and filled at the fixed point for three times; during throwing and filling, the rudder of the sand dredger is utilized to adjust the direction of the ship, so that the belt conveyor head of the sand dredger swings at a constant speed from one side of the sand dredger unit block to the other side for throwing sand, and when one third of the sand in the cabin of the sand dredger is discharged, the sand throwing construction of the first arc-shaped belt in the sand dredger unit block is completed; lifting the chain stoppers of the two anchor chains, discharging the two anchor chains for 15-17 m, putting down the chain stoppers, slowly driving the sand-blowing boat forwards for 15-17 m under the action of ship power, and stopping, wherein a belt conveyor head of the sand-blowing boat continuously performs left-right uniform-speed swinging sand-throwing to the hydraulic filling unit block, and when two thirds of sand in a cabin of the sand-blowing boat is discharged, the sand-throwing construction of a second arc belt in the hydraulic filling unit block is completed; lifting chain stoppers of the two anchor chains, discharging the two anchor chains for 15-17 m, putting down the chain stoppers, slowly driving the sand-blasting boat forwards for 15-17 m under the action of ship power, and stopping, wherein a belt conveyor head of the sand-blasting boat continuously throws sand into the hydraulic filling unit block by adopting left-right constant-speed swinging, and when the sand amount in a cabin of the sand-blasting boat is completely discharged, sand throwing construction of a third arc-shaped belt in the hydraulic filling unit block is finished, so that uniform loading and sand throwing in one hydraulic filling unit block are finished;
driving the sand blowing ship away from the sand dam surrounding area, reaching a sand production area, and sucking sand and loading the sand into a cabin at a specified position by using a sand sucking pipe;
step five, sailing to a sand dam surrounding area after a cabin of the sand blowing ship is fully loaded, and performing sand throwing construction on a next blowing and filling unit block to be thrown and filled;
and step six, repeating the step three to the step five until sand throwing construction of all the hydraulic fill unit blocks in the sand dam surrounding area is completed.
The construction method for filling the belt sand-blowing ship into the land comprises the following steps of filling the belt sand-blowing ship into the land, wherein the cabin capacity of the belt sand-blowing ship is 4000m3～5000m3。
The belt type sand dredger is used for dredging and filling land, wherein in the second step, each dredger fill unit block is lofted by four buoys, underwater strings connected to the four buoys, a load-bearing object connected to the other ends of the underwater strings and capable of sinking into the sea bottom, and water surface strings connected among the four buoys; during lofting, a traffic ship is adopted for slow running, after the RTK measuring instrument is held by hands to measure in place, the weight bearing object is thrown down in time, the length of the underwater string is adjusted according to the height of tidal water and the water depth condition, and accurate lofting of the hydraulic filling unit block is realized.
The belt type sand blowing boat reclamation land construction method comprises the following steps that (1) a buoy is a foam buoy; the load bearing object adopts a cement hollow brick; the diameter of the underwater string and the diameter of the water surface string are both 1.5 mm.
The construction method for filling the belt type sand blowing ship into the land has the following characteristics:
1) the sand dam is constructed at the edge of the construction area for centralized silt squeezing, the lateral stability of the sand dam body is improved after sand is filled in the sand dam surrounding area, and meanwhile, a relatively closed construction area can be formed, so that the loss amount during sand backfilling in the sand dam surrounding area is reduced;
2) sand is uniformly layered and thrown in the sand dam surrounding area, so that the sand and the silt are fully mixed, and the stability of sand bodies in the sand dam surrounding area is improved;
3) the device does not need to additionally increase the investment of ship equipment, ensures even ballast in a land forming area only through the swinging of the belt type sand blowing ship, solves the problem of uneven depth of a silt layer in a construction area, avoids the occurrence of quality accidents such as silt package, collapse prevention and the like, meets the requirements of engineering quality, and also ensures the construction safety.
Drawings
FIG. 1 is a view showing a state in the case where the construction method of the present invention is carried out in step three;
fig. 2 is a top view of fig. 1.
Detailed Description
The invention will be further explained with reference to the drawings.
The invention relates to a construction method for filling a belt type sand-blowing ship into land, which adopts a cabin capacity of 4000m3～5000m3The belt type sand blowing boat.
The construction method comprises the following steps:
step one, building a sand dam at the edge of a construction area by using a belt type sand blowing ship to form a sand dam surrounding area; the belt type sand blowing boat is decelerated to be determined after reaching a construction point, a GPS is manually held to position at the bow, the accurate direction of a belt conveyor head of the sand blowing boat is measured and calculated, the belt conveyor head is aligned to an area to be cast and filled, a host of the sand blowing boat is started to carry out fixed-point cast and fill construction, the single loading depth is more than 16m, bottom sludge in the sand dam surrounding area is fully squeezed away, the friction force at the bottom of a sand dam body is increased, and the sand blowing boat is shifted to the next construction point until the sand dam is constructed after reaching the designed and planned elevation requirement after water is discharged; after sand is filled in the sand dam surrounding area, the lateral stability of the sand dam body is improved, and meanwhile, a relatively closed construction area can be formed, so that the loss during sand back filling in the sand dam surrounding area is reduced;
secondly, placing and dividing the grid-shaped blow filling unit blocks 200 in the sand dam surrounding area, wherein the size of each blow filling unit block 200 is 50m multiplied by 50 m; lofting each hydraulic reclamation unit block by using four buoys 11, underwater strings 12 connected to the four buoys 11, a load carrier 13 connected to the other ends of the underwater strings 12 and capable of sinking into the sea bottom, and a water surface string 14 connected between the four buoys 11; the buoy 11 is a foam buoy; the weight bearing body 13 is made of a cement hollow brick; the diameter of the underwater string 12 and the diameter of the water surface string 14 are both 1.5 mm; during lofting, a traffic ship is adopted for slow running, after the RTK measuring instrument is manually held in place for measurement, the load-bearing object 13 is timely thrown down, the length of the underwater string 12 is adjusted according to the height of tidal water and the water depth, the accurate lofting of the hydraulic filling unit block 200 is realized, and the plane error is controlled within the range of +/-20 cm;
thirdly, the belt type sand blowing boat is full of sand materials and reaches a sand dam surrounding area, two anchors 101 on the bow of the sand blowing boat 100 are used for positioning, the two anchors 101 are thrown at a position where the sand blowing boat 100 enters the sand dam surrounding area and is 140-160 m away from a hydraulic reclamation unit block to be filled, two anchor chains 102 which are connected with the two anchors 101 in a one-to-one correspondence mode are put down while the sand blowing boat 100 slowly moves, chain stoppers of the two anchor chains 102 are put down when the sand blowing boat moves to the hydraulic reclamation unit block 200, and the two anchor chains 102 are locked; at the moment, the main machine of the sand-blowing boat 100 does not stop, the power of the main machine and the pulling force of the two anchor chains 102 form balance, so that the sand-blowing boat 100 is accurately positioned, and sand throwing is started when the belt conveyor head of the sand-blowing boat is positioned to the bottom side line of the hydraulic filling unit block 200; in the sand throwing process, each hydraulic fill unit block 200 is divided into three arc-shaped zones for throwing and filling, the sand dredger 100 throws and fills one arc-shaped zone at a fixed point once, and each hydraulic fill unit block 200 is divided into three fixed point throws and fills; when throwing and filling, the rudder of the sand-blasting boat 100 is utilized to adjust the direction of the boat, so that the belt conveyor head of the sand-blasting boat 100 swings from one side of the sand-blasting unit block 200 to the other side at a constant speed to throw sand, and the throwing and filling thickness of the belt conveyor head is 2-3 m every time the belt conveyor head swings; when one third of the sand in the cabin of the sand-blasting vessel 100 is discharged, the sand-blasting construction of the first arc-shaped belt 201 in the hydraulic filling unit block 200 is completed; at the moment, the chain stoppers of the two anchor chains 102 are lifted, the chain stoppers are put down after the two anchor chains are discharged for 15 m-17 m, the belt type sand-blasting boat 100 slowly moves forwards for 15 m-17 m under the action of ship power and then is stopped, the belt conveyor head of the sand-blasting boat 100 continuously carries out left-right uniform-speed swinging sand blasting to the hydraulic filling unit block 200, and the blasting thickness of the belt conveyor head is 2-3 m when the belt conveyor head swings once; when two thirds of the sand in the cabin of the sand dredger 100 is discharged, the sand throwing construction of the second arc-shaped belt 202 in the hydraulic fill unit block 200 is completed; at the moment, the chain stoppers of the two anchor chains 102 are lifted, the chain stoppers are put down after the two anchor chains are discharged for 15-17 m, the sand dredger 100 slowly moves forwards for 15-17 m under the action of ship power and then is stopped, a belt conveyor head of the sand dredger 100 continuously carries out left-right uniform-speed swinging sand throwing to the hydraulic filling unit block 200, and the throwing thickness of the belt conveyor head is 2-3 m every time the belt conveyor head swings; when the sand amount in the cabin of the dredger 100 is completely discharged, the sand throwing construction of the third arc-shaped belt 203 in the dredger fill unit block 200 is completed, and the uniform loading and sand throwing in one dredger fill unit block 200 is also completed (see fig. 1 and 2);
driving the sand blowing ship away from the sand dam surrounding area, reaching a sand production area, and sucking sand and loading the sand into a cabin at a specified position by using a sand sucking pipe;
step five, sailing to a sand dam surrounding area after a cabin of the sand blowing ship is fully loaded, and performing sand throwing construction on a next blowing and filling unit block to be thrown and filled;
and step six, repeating the step three to the step five until the sand throwing construction of all the hydraulic fill unit blocks in the sand dam surrounding area is completed.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.

Claims (4)

1. A construction method for filling and reclamation of a belt type sand blowing ship is characterized by comprising the following steps:
step one, constructing a sand dam at the edge of a construction area by using a belt type sand blowing ship to form a sand dam surrounding area; the belt type sand blowing boat is decelerated to be undetermined after reaching a construction point, a GPS is manually held at the bow for positioning, the accurate direction of a belt conveyor head of the sand blowing boat is measured and calculated, the belt conveyor head is aligned to an area to be cast and filled, a host of the sand blowing boat is started for fixed-point cast and filling construction, the sand blowing boat is shifted to the next construction point until the sand dam is constructed after reaching the design set elevation requirement after the sand body is drained;
step two, placing samples in the sand dam surrounding area to divide a plurality of grid-shaped blow filling unit blocks, wherein the size of each blow filling unit block is 50m multiplied by 50 m;
thirdly, the belt type sand blowing boat fully loaded with sand arrives at the sand dam surrounding area, and is positioned by using two anchors on the bow of the sand blowing boat, namely the sand blowing boat throws down the two anchors at a certain distance from a hydraulic filling unit block to be thrown and filled, the sand blowing boat puts down two anchor chains which are connected with the two anchors in a one-to-one correspondence manner while slowly moving, and puts down chain stoppers of the two anchor chains when moving to the hydraulic filling unit block, and locks the two anchor chains; at the moment, the main machine of the sand blowing boat does not stop, the power of the main machine and the pulling force of the two anchor chains form balance, so that the sand blowing boat is accurately positioned, and then sand throwing is started when the belt conveyor head of the sand blowing boat is positioned to the bottom side line of the hydraulic filling unit block; in the sand throwing process, each hydraulic reclamation unit block is divided into three arc-shaped bands, one arc-shaped band is thrown and filled once at each fixed point of the sand dredger, and each hydraulic reclamation unit block is thrown and filled at the fixed point for three times; during throwing and filling, the rudder of the sand dredger is utilized to adjust the direction of the ship, so that the belt conveyor head of the sand dredger swings at a constant speed from one side of the sand dredger unit block to the other side for throwing sand, and when one third of the sand in the cabin of the sand dredger is discharged, the sand throwing construction of the first arc-shaped belt in the sand dredger unit block is completed; lifting the chain stoppers of the two anchor chains, discharging the two anchor chains for 15-17 m, putting down the chain stoppers, slowly driving the sand-blowing boat forwards for 15-17 m under the action of ship power, and stopping, wherein a belt conveyor head of the sand-blowing boat continuously performs left-right uniform-speed swinging sand-throwing to the hydraulic filling unit block, and when two thirds of sand in a cabin of the sand-blowing boat is discharged, the sand-throwing construction of a second arc belt in the hydraulic filling unit block is completed; lifting chain stoppers of the two anchor chains, discharging the two anchor chains for 15-17 m, putting down the chain stoppers, slowly driving the sand-blasting boat forwards for 15-17 m under the action of ship power, and stopping, wherein a belt conveyor head of the sand-blasting boat continuously throws sand into the hydraulic filling unit block by adopting left-right constant-speed swinging, and when the sand amount in a cabin of the sand-blasting boat is completely discharged, sand throwing construction of a third arc-shaped belt in the hydraulic filling unit block is finished, so that uniform loading and sand throwing in one hydraulic filling unit block are finished;
driving the sand blowing ship away from the sand dam surrounding area, reaching a sand production area, and sucking sand and loading the sand into a cabin at a specified position by using a sand sucking pipe;
step five, sailing to a sand dam surrounding area after a cabin of the sand blowing ship is fully loaded, and performing sand throwing construction on a next blowing and filling unit block to be thrown and filled;
and step six, repeating the step three to the step five until sand throwing construction of all the hydraulic fill unit blocks in the sand dam surrounding area is completed.
2. The construction method for reclamation by blowing on a belt-type sand blower according to claim 1, wherein the capacity of the belt-type sand blower is 4000m3～5000m3。
3. The belt type sand blower boat reclamation construction method as recited in claim 1, wherein in the second step, each reclamation block is lofted with four buoys, underwater strings connected to the four buoys, a load-bearing member connected to the other end of the underwater strings and capable of sinking to the sea bottom, and surface strings connected between the four buoys; during lofting, a traffic ship is adopted for slow running, after the RTK measuring instrument is held by hands to measure in place, the weight bearing object is thrown down in time, the length of the underwater string is adjusted according to the height of tidal water and the water depth condition, and accurate lofting of the hydraulic filling unit block is realized.
4. The construction method for dredger reclamation of claim 3, wherein the buoy is a foam buoy; the load bearing object adopts a cement hollow brick; the diameter of the underwater string and the diameter of the water surface string are both 1.5 mm.
CN202011122812.5A 2020-10-20 2020-10-20 Construction method for filling belt type sand blowing ship into land Pending CN112127324A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001317031A (en) * 2000-05-10 2001-11-16 Ohbayashi Corp Reclamation work construction management system
CN108330977A (en) * 2017-12-28 2018-07-27 中交烟台环保疏浚有限公司 SA sand bedding course throwing constructions
CN111648309A (en) * 2020-06-04 2020-09-11 中交天航南方交通建设有限公司 Construction method for blowing and filling sandy soil by additionally installing sand hopper cutter suction ship

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001317031A (en) * 2000-05-10 2001-11-16 Ohbayashi Corp Reclamation work construction management system
CN108330977A (en) * 2017-12-28 2018-07-27 中交烟台环保疏浚有限公司 SA sand bedding course throwing constructions
CN111648309A (en) * 2020-06-04 2020-09-11 中交天航南方交通建设有限公司 Construction method for blowing and filling sandy soil by additionally installing sand hopper cutter suction ship

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
唐辉明: "《工程地质 面向21世纪》", 30 November 1997, 中国地质大学出版社 *
张裕山: "耙吸船艏吹造地的施工工艺及影响因素", 《珠江水运》 *
李翔: "浅谈皮带砂船抛填砂垫层厚度控制施工技术", 《中国交通建设股份有限公司2013年现场技术交流会论文集》 *
谢凤一: "皮带吹砂船在沿海吹填造地工程中的应用", 《中国水运》 *

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