阅读说明：本技术 一种利用自密实水泥土造岛的作业船及施工方法 (Operating ship for building island by using self-compacting cement soil and construction method ) 是由 高玉峰 张煜 刘凌霄 舒爽 张燚 于 2020-11-09 设计创作，主要内容包括：本发明提供了一种利用自密实水泥土造岛的作业船及施工方法,将城市废弃土资源运送至作业船的土料破碎搅拌装置内,并与固化剂搅拌装置中的固化剂直接在作业船上进行拌和,作业船行驶至围堰区域附近,将拌和后形成的自密实水泥土泵送至围堰区内进行填筑,直至填满围堰区域。该方法具有固化时间短、强度高、抗变形能力强、自密实无需碾压,经济环保等特点,使用自密实水泥土作为填海造岛的土料在工程性质方面具有无可比拟的优势。(The invention provides an operating ship for island construction by utilizing self-compacting cement soil and a construction method. The method has the characteristics of short curing time, high strength, strong deformation resistance, no need of rolling, economy, environmental protection and the like, and the self-compacting cemented soil used as the soil material for filling the sea and building the island has incomparable advantages in the aspect of engineering properties.)

1. The utility model provides an utilize self-compaction cement soil to make operation ship in island, includes hull (1), its characterized in that, be provided with the mount pad subassembly on hull (1) and install waste soil processing mechanism and conveying transport mechanism, the mount pad subassembly includes support frame (31), mounting bracket (32) and No. two mounting bracket (33), waste soil processing mechanism installs on support frame (31), including stirred tank (21), the broken agitating unit of soil material (22) and curing agent agitating unit (23), mounting bracket (32) and No. two mounting bracket (33) are installed the upper end of stirred tank (21) for support the broken agitating unit of soil material (22) and curing agent agitating unit (23), the upper end of stirred tank (21) respectively with the discharge gate of the broken agitating unit of soil material (22) and curing agent agitating unit (23) is connected, be provided with the water inlet on the cell wall of agitator tank (21) and be connected with raceway (5), conveying transport mechanism includes transport pipe way (41), scalable pipe (42) and guide rail (43), the one end of transport pipe way (41) with the discharge gate of agitator tank (21) is connected, and the other end is connected scalable pipe (42), guide rail (43) are installed scalable pipe (42) with between hull (1).

2. The vessel for constructing an island using self-compacting cement and soil as claimed in claim 1, wherein a plurality of spiral agitating means (211) are provided in said agitating vessel (21).

3. The working ship for making an island by using self-compacting cement and soil as claimed in claim 1, wherein a spiral crushing stirrer (221) is arranged in the soil crushing and stirring device (22).

4. The working ship for making an island by using self-compacting cement and soil as claimed in claim 3, wherein a quantitative pump (222) is installed at the bottom of the soil crushing and stirring device (22) near the discharge hole.

5. The working ship for making an island by using self-compacting cement and soil as claimed in claim 1, wherein a second quantitative pump (231) is installed at the bottom of the curing agent stirring device (23) near the discharge hole.

6. The work vessel for island making with self-compacting cement and soil as claimed in claim 1, wherein a plurality of agitators (411) are provided in said transport pipe (41).

7. The workboat for constructing an island by using self-compacting cement soil according to claim 1, characterized in that a submersible pump (6) is further arranged on the hull (1).

8. A construction method for making an island by using self-compacting cement soil, which is based on the operating ship for making an island by using self-compacting cement soil as claimed in any one of claims 1-6, and is characterized by comprising the following steps:

the method comprises the following steps: after the waste soil is conveyed to the coast, the waste soil is loaded into a soil crushing and stirring device (22) on an operation ship by using a conveyor belt, and in the same way, a mixture of cement and fly ash in a ratio of 10:1 is loaded into a curing agent stirring device (23) on the operation ship;

step two: when the operation ship runs to a preset place near the cofferdam (7), a spiral crushing stirrer (221) in the soil crushing and stirring device (22) starts to stir the soil body, so that large particles in the soil body are crushed, the soil arch effect is prevented from being generated, and the uneven blanking is avoided;

step three: when the operating ship runs to a preset place near the cofferdam (7), a first quantitative pump (222) at the discharge port of the soil material crushing and stirring device (22) and a second quantitative pump (231) at the discharge port of the curing agent stirring device (23) are opened, so that soil and a curing agent are discharged to a stirring tank according to the proportion of 7:1, meanwhile, a submersible pump (6) pumps water and injects seawater into the stirring tank (21) through a water delivery pipe (5), and the soil, the curing agent and the seawater are premixed through a spiral stirring device (211) in the stirring tank (21) to obtain self-compacting cement soil with certain fluidity;

step four: the premixed mixture is transported into a telescopic guide pipe (42) through a transport pipeline (41), a stirrer (411) arranged in the transport pipeline (41) is used for carrying out secondary stirring on the mixture, and necessary power is provided for the mixture transportation;

step five: the telescopic guide rail (43) can enable the telescopic guide pipe (42) to move left and right, the self-compacting cement soil is filled in the cofferdam in an S-shaped layered mode, the bottommost layer is filled from one side close to the operation ship to one side far away from the operation ship, then the telescopic guide pipe (42) is shortened, the penultimate layer is filled from one side far away from the operation ship to one side close to the operation ship, and the like, so that the filling of the self-compacting cement soil in the cofferdam (7) is completed.

Technical Field

The invention belongs to the technical field of marine geotechnical engineering, and particularly relates to an operating ship for constructing an island by using self-compacting cement soil and a construction method.

Background

At present, coastal province economic development degree is higher, foundation engineering construction develops vigorously, and engineering construction generates a large amount of waste soil, so that the use efficiency is low, and no engineering benefit is generated. Meanwhile, along with the rapid development of economy, land resources become more and more tense, and land reclamation by sea has become an important measure for the development and utilization of oceans by human beings. The existing sea filling and island building means is to adopt a dredger to carry out sea sand blowing and island filling, the used sea filling soil materials are generally sea sand and sludge of a nearby shoal and part of soil materials transported on land, and the land is specially used for mining, excavating and transporting the soil materials for sea filling and island building, so that the cost is high in both material drawing and transportation aspects.

Disclosure of Invention

The invention provides an operating ship and a construction method for constructing an island by using self-compacting cement soil, which are used for recycling engineering waste soil in a coastal region, forming the self-compacting cement soil after treatment and applying the self-compacting cement soil to the sea filling and island constructing, can effectively realize the recycling of the engineering waste soil in an economically developed region around the coastal region, effectively save the treatment cost of the waste soil and generate engineering value. The offshore land transportation and filling work is parallel, the working process of filling the sea and building the island is effectively promoted, and the engineering construction efficiency and quality are improved. The self-compacting cement soil has good engineering characteristics, so that the island filling quality can be ensured.

The technical scheme of the invention is as follows: an operating ship for constructing an island by utilizing self-compacting cement soil comprises a ship body, wherein a mounting frame assembly is arranged on the ship body, a waste soil treatment mechanism and a conveying and transporting mechanism are arranged on the ship body, the mounting frame assembly comprises a support frame, a first mounting frame and a second mounting frame, the waste soil treatment mechanism is arranged on the support frame and comprises a stirring tank, a soil material crushing and stirring device and a curing agent stirring device, the first mounting frame and the second mounting frame are arranged at the upper end of the stirring tank and are used for supporting the soil material crushing and stirring device and the curing agent stirring device, the upper end of the stirring tank is respectively connected with discharge ports of the soil material crushing and stirring device and the curing agent stirring device, a water inlet is formed in the wall of the stirring tank and is connected with a water conveying pipe, the conveying and transporting mechanism comprises a conveying pipeline, a telescopic guide pipe and a guide rail, one end of the conveying pipeline, the other end of the telescopic guide pipe is connected with the other end of the telescopic guide pipe, and the guide rail is arranged between the telescopic guide pipe and the ship body.

Further, a plurality of spiral stirring devices are arranged in the stirring tank.

Furthermore, a spiral crushing stirrer is arranged in the soil crushing and stirring device.

Furthermore, a quantitative pump is installed at a position close to a discharge hole at the bottom of the soil crushing and stirring device.

Furthermore, a second quantitative pump is installed at a position close to the discharge hole at the bottom of the curing agent stirring device.

Further, a plurality of stirrers are arranged in the conveying pipeline.

Further, a submersible pump is further arranged on the ship body.

A construction method for building an island by using self-compacting cement soil comprises the following steps:

the method comprises the following steps: after the waste soil is conveyed to the coast, the waste soil is loaded into a soil crushing and stirring device on an operation ship by using a conveying belt, and similarly, a mixture of cement and fly ash in a ratio of 10:1 is loaded into a curing agent stirring device on the operation ship;

step two: when the operation ship runs to a preset place near the cofferdam area, a spiral crushing stirrer in the soil material crushing and stirring device starts to stir the soil body, large particles in the soil body are crushed, the soil arch effect is prevented from being generated, and uneven blanking is avoided;

step three: when the operating ship runs to a preset place near a cofferdam area, opening a first quantitative pump at a discharge port of the soil material crushing and stirring device and a second quantitative pump at a discharge port of the curing agent stirring device, discharging soil bodies and curing agents to a stirring tank according to the proportion of 7:1, simultaneously pumping water by a submersible pump, injecting seawater into the stirring tank through a water delivery pipe, and pre-mixing the soil bodies, the curing agents and the seawater through a spiral stirring device in the stirring tank to obtain self-compacting cement soil with certain fluidity;

step four: the premixed and well mixed materials are transported into a telescopic guide pipe through a transport pipeline, a stirrer arranged in the transport pipeline is used for carrying out secondary stirring on the mixed materials, and necessary power is provided for transporting the mixed materials;

step five: the guide rail that sets up can make scalable pipe realize moving about from beginning to end, and self-compaction soil cement fills according to S-shaped layering in the cofferdam, at first from the one side of being close to the operation ship to the one side of keeping away from the operation ship fill the bottom layer, then shortens scalable pipe, continues to fill penultimate floor from the one side of keeping away from the operation ship to the one side of being close to the operation ship to analogize with this, accomplishes the filling of self-compaction soil cement in the cofferdam.

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

1. the transportation, storage, management and the like of the engineering construction waste soil can generate and consume a large amount of economic cost, and the invention can fully recycle the waste soil, generate considerable engineering value, and is economic and environment-friendly; the waste soil is the embodiment of the engineering economic benefit changed from negative to positive.

2. The self-compacting cement soil formed after the spoil and the curing agent are mixed has good engineering characteristics, such as short curing time, high curing strength, strong anti-deformation capability, stable physical and mechanical indexes, self-tightness and fluidity before curing and excellent seepage-proofing performance; due to the characteristics, the foundation soil treated by the self-compacting cement soil has incomparable advantages of original sea sand for filling the sea and building the island, mucky soil and other soil materials in the aspects of compactness, strength, stability, seepage resistance, silt promotion, consolidation speed and the like.

3. The construction method for building the island by using the self-compacting cement soil has the advantages of simple thought, convenient construction process and method, and good economic benefit and application prospect in sea filling and island building engineering.

Drawings

FIG. 1 is a plan view of a construction process for making an island using self-compacting cement soil according to the present invention;

FIG. 2 is a top view of a construction process for making an island using self-compacting cement soil according to the present invention;

FIG. 3 is a schematic flow chart of a process for making an island by using self-compacting cement soil according to the present invention;

the device comprises a ship body 1, a ship body 21, a stirring tank 211, a spiral stirring device 22, a soil material crushing stirring device 221, a spiral crushing stirrer 222, a first quantitative pump 23, a curing agent stirring device 231, a second quantitative pump 31, a support frame 32, a first mounting frame 33, a second mounting frame 41, a conveying pipeline 411, a stirrer 42, a telescopic guide pipe 43, a guide rail 5, a water conveying pipe, a 6, a submersible pump 7 and a cofferdam.

Detailed Description

In order to facilitate an understanding of the invention, the invention will now be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which may be embodied in different forms and not limited to the embodiments described herein, but which are provided so as to provide a more thorough and complete disclosure of the invention.

In the embodiment, referring to fig. 1-2, a workboat for constructing an island by using self-compacting cement soil comprises a hull 1, wherein a mounting frame assembly is arranged on the hull 1, and a waste soil treatment mechanism and a conveying and transporting mechanism are mounted on the mounting frame assembly, the mounting frame assembly comprises a supporting frame 31, a first mounting frame 32 and a second mounting frame 33, the waste soil treatment mechanism is mounted on the supporting frame 31 and comprises a stirring tank 21, a soil material crushing and stirring device 22 and a curing agent stirring device 23, the first mounting frame 32 and the second mounting frame 33 are mounted at the upper end of the stirring tank 21 and are used for supporting the soil material crushing and stirring device 22 and the curing agent stirring device 23, the upper end of the stirring tank 21 is respectively connected with discharge ports of the soil material crushing and stirring device 22 and the curing agent stirring device 23, a water inlet is arranged on the wall of the stirring tank 21 and is connected with a water, the conveying and transporting mechanism comprises a transporting pipeline 41, a telescopic guide pipe 42 and a guide rail 43, one end of the transporting pipeline 41 is connected with a discharge hole of the stirring tank 21, the other end of the transporting pipeline is connected with the telescopic guide pipe 42, and the guide rail 43 is installed between the telescopic guide pipe 42 and the ship body 1.

In addition, a plurality of spiral stirring devices are provided in the stirring tank 21. Preferably, in this embodiment, three spiral stirring devices 211 are disposed in the stirring tank 21, and are disposed at the lower end of the discharge port of the soil crushing and stirring device 22, the lower end of the discharge port of the curing agent stirring device 23, and the upper end of the discharge port of the stirring tank 21, respectively.

In the above structure, a spiral crushing stirrer 221 is arranged in the soil crushing and stirring device 22, and a first quantitative pump 222 is installed at a position near a discharge hole at the bottom of the soil crushing and stirring device 22.

In the above structure, a second quantitative pump 231 is installed at a position near the discharge port at the bottom of the curing agent stirring device 23.

Preferably, a plurality of stirrers 411 are provided in the transport pipe 41 to provide the power necessary for conveying the mixture, and to achieve the purpose of secondary stirring, so that the various raw materials are sufficiently and uniformly mixed, good mechanical properties are exhibited, and a relay pump may be added if necessary.

As shown in fig. 3, a construction method for constructing an island by using self-compacting cement soil comprises the following steps:

the method comprises the following steps: after the waste soil is conveyed to the coast, the waste soil is loaded into a soil crushing and stirring device 22 on an operation ship by using a conveyor belt, and similarly, a mixture of cement and fly ash in a ratio of 10:1 is loaded into a curing agent stirring device 23 on the operation ship;

step two: when the operation ship runs to a preset place near the cofferdam 7 area, the spiral crushing stirrer 221 in the soil crushing and stirring device 22 starts to stir the soil body, so that large particles in the soil body are crushed, the soil arch effect is prevented from being generated, and the uneven blanking is avoided;

step three: when the operation ship runs to a preset place near the cofferdam 7 area, a first quantitative pump 222 at the discharge port of the soil material crushing and stirring device 22 and a second quantitative pump 231 at the discharge port of the curing agent stirring device 23 are opened, so that soil and curing agent are discharged to the stirring tank according to the proportion of 7:1, meanwhile, the submersible pump 6 pumps water and injects seawater into the stirring tank 21 through the water conveying pipe 5, and the soil, the curing agent and the seawater are premixed through the spiral stirring device 211 in the stirring tank 21, so that self-compacting cement soil with certain fluidity is obtained;

step four: the premixed mixture is transported into the telescopic guide pipe 42 through the transport pipeline 41, and the stirrer 411 arranged in the transport pipeline 41 stirs the mixture for the second time and provides necessary power for transporting the mixture;

step five: the telescopic guide rail 43 can enable the telescopic guide pipe 42 to move front and back and left and right, the self-compacting cement soil is filled in the cofferdam in an S-shaped layered mode, the bottommost layer is filled from one side close to the operation ship to one side far away from the operation ship, then the telescopic guide pipe 42 is shortened, the penultimate layer is filled from one side far away from the operation ship to one side close to the operation ship, and the like, so that the filling of the self-compacting cement soil in the cofferdam 7 is completed.

It should be noted that the work ship is not limited by the offshore distance, and can flexibly travel to any cofferdam 7 area for operation. In particular, when the work volume is large and the raw materials stored in the soil crushing/stirring device 22 and the curing agent stirring device 23 on the work ship are insufficient, the raw materials can be supplied to the work ship by using an auxiliary transportation barge.

The application of the invention is as follows: under the background of great propulsion of the work of sea reclamation and island building, the waste engineering soil is digested and utilized to serve the sea reclamation and island building engineering on the premise of proper transportation distance and controllable construction and transportation cost. The cost of the transportation and processing link is controlled, the construction quality and the efficiency progress of the sea filling and island making engineering can be greatly improved by the excellent engineering characteristics of the self-compacting cement soil, and meanwhile, the aims of waste soil utilization and economic, environmental protection and sustainable development are fulfilled.

The invention is described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the above-described embodiments, and it is within the scope of the invention to adopt such insubstantial modifications of the inventive method concept and solution, or to apply the inventive concept and solution directly to other applications without modification.