CN218263878U - Sludge curing application system for seawall water slope - Google Patents
Sludge curing application system for seawall water slope Download PDFInfo
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- CN218263878U CN218263878U CN202222156022.XU CN202222156022U CN218263878U CN 218263878 U CN218263878 U CN 218263878U CN 202222156022 U CN202222156022 U CN 202222156022U CN 218263878 U CN218263878 U CN 218263878U
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Abstract
The utility model provides a silt solidification application system for seawall back of body water slope, it is including subsiding the device, the pipeline, tail water treatment pond, silt sunning place, the conveyer belt, solidification equipment, seawall back of body water slope solidification structure, it sets up the mud import to subside device one end, inside is equipped with the sedimentation tank slush pump, subside the device through the pipeline respectively with tail water treatment pond, silt sunning place is connected, silt sunning place passes through the conveyer belt with solidification equipment and is connected, solidification equipment includes curing agent agitating unit, mix agitating unit, the stirring pond, solidification equipment passes through the transportation equipment with seawall back of body water slope solidification structure and is connected. In order to balance earthwork problems in engineering, the system adopts a silt curing technology to treat a seawall backwater slope, replaces loess backfill to treat the confined soil, meets the requirements of confined earthwork backfill and impermeability, expands the application range of the cured soil, not only solves the problem of difficult silt stacking in hydraulic engineering, opens up a new path of silt resource utilization, and saves loess outsourcing cost.
Description
The technical field is as follows:
the utility model belongs to the technical field of environment geotechnical engineering, especially, relate to the processing of dredging silt is dealt with and utilization technical field, and specifically speaking is a silt solidification application system for seawall back of the body water slope.
Background art:
the rainfall of the southern city is abundant, the underground water level is high, and a large amount of silty clay is generated by excavating the earthwork of the deep foundation pit; in addition, large amounts of sludge are also produced by dredging of rivers, lakes, ponds. Due to the fact that the generated sludge is high in water content, difficult to consolidate, large in size and difficult to dewater and consolidate, a large amount of land needs to be required for stacking, and treatment and disposal of the sludge become difficult problems in urbanization development of China.
At present, the sludge treatment mainly comprises ocean dumping, land landfill, mine backfilling, agricultural fertilizing, landscaping and building material utilization. But with the gradual shortage of stacking fields, the awareness of environmental protection is strengthened, and the sludge disposal mode is more and more difficult. With the development of the concept of circular economy, the resource utilization of the sludge is advocated by people, for example, the sludge is used for manufacturing building materials such as ceramsite and bricks, but the sludge needs dehydration, solidification and other treatments in the early stage, so that the treatment cost is high, and the popularization and the application are limited. The sludge has the characteristics of large porosity, high compressibility, high water content and low bearing capacity, the solidification treatment technology of the sludge becomes an inevitable technical difficulty, many experts and scholars are concerned with the research and development of high-performance curing agents, and the strength, deformation characteristics, permeability and other engineering properties of the soil body can be effectively improved through the solidification of the dredged sludge; the strength growth mechanism of the solidified soil is mainly researched through the type and the addition amount of the curing agent, the mode is single, and the cost is high.
The seawall is an important and effective engineering measure in a coastal region storm surge defense system, and is a component of a coastal protection engineering system. The inner side of the sea dike is generally backfilled by riprap and air-tight earthwork, but for the joint of the dike body and the sluice, if the riprap and air-tight earthwork are adopted for treatment, the air-tight earthwork is easy to lose when the sea water is at a high tide level, and the riprap has large pores and is easy to leak into the dike body to generate holes or cracks, so that the sea dike is unstable; if only closed air soil is adopted for treatment, although the function of water insulation is achieved to a certain extent, the foundation is soft, uneven settlement is generated, the requirement of the bearing capacity of the roadbed cannot be met, so that expansion joints between filling soil on two sides of the lock chamber and the empty boxes are deformed, water is stopped and the needles are broken, and the bottoms of the filling soil on two sides are hollowed by seawater under the action of tide to form seepage channels, so that the important hidden danger of the safety of the sluice is realized; and coastal city soil and stone resources are very scarce, the mining points are few, the transportation distance is often as long as more than 30km, and the adoption of riprap can greatly increase the raw materials and the transportation cost.
The utility model has the following contents:
the utility model discloses a solve the excavation earthwork outward transport and dissolve the difficulty, provide the silt that make full use of seawall engineering along the line produced, substitute the closed gas earthwork that loess was filled after solidifying silt, balanced among the engineering silt deal with the problem that difficulty and loess purchasing cost are high, policy processing problem reduces, is favorable to the engineering to implement smoothly.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
the utility model provides a silt solidification application system for seawall back of body water slope, this system is including subsiding the device, the pipeline, the tail water treatment pond, silt sunning place, the conveyer belt, solidification equipment, seawall back of body water slope solidification structure, it sets up the mud import to subside device one end, inside is equipped with the sedimentation tank slush pump, subside the device through the pipeline respectively with tail water treatment pond, silt sunning place is connected, silt sunning place passes through the conveyer belt with solidification equipment and is connected, solidification equipment includes curing agent agitating unit, mix agitating unit, the stirring pond, solidification equipment passes through the transportation equipment with seawall back of body water slope solidification structure and is connected.
The sedimentation device be equipped with the tertiary, be one-level sedimentation tank, second grade sedimentation tank, tertiary sedimentation tank respectively, the one-level sedimentation tank leans on outside one end to set up the mud import, is equipped with the sedimentation tank slush pump in one-level sedimentation tank, the second grade sedimentation tank, each level sedimentation tank is connected with tail water treatment pond through the pipeline respectively, tertiary sedimentation tank is connected with silt sunning place through the pipeline.
And the primary sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are internally provided with stirrers.
The mud pump of the sedimentation tank, the mud inlet and the pipeline are arranged in a staggered way by diagonal lines.
The mixing and stirring device adopts a hydraulic back-shoveling type excavator.
The sea wall backwater slope solidification structure is characterized in that the height of a dike top is 6.2m and is divided into two stages of platforms, the height of the top of a first stage platform is 4.50m, the clear width is 8m, the slope ratio of the dike top to the first stage platform is 1, the slope protection surface is planting soil with the thickness of 100cm, and air-tight earthwork for solidification treatment is arranged below the slope of the first stage platform and the planting soil; the total width of the secondary platform is 10m, the elevation is 2.40m, and the excavated stone space is backfilled to the inner side in the later period.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the utility model discloses a silt solidification technology handles seawall back water slope, satisfies requirement and the impermeability that the earthwork of remaining silent backfilled, has extended solidified soil range of application, deals with for silt and provides a resource utilization way, has certain engineering value and social.
2. The utility model discloses a native part of closing of solidified soil replacement sea wall back of the body water slope improves sea wall overall structure nature, reduces the post-construction and subsides, and whole anti-skidding stability is more excellent, and stable in structure is reliable.
3. The utility model discloses the practical construction condition of comprehensive consideration, coastal city current situation beach condition for make full use of seawall siltation earthwork along the line, reduce the earthwork outward transport, also reduced the loess purchase as the closed air earthwork is filled up simultaneously, practiced thrift the cost for the seawall construction.
To sum up, foundation ditch excavation earthwork among the hydraulic engineering, dredging silt moisture content height, square volume are big, and sea wall construction needs a large amount of gas earthwork backfill that closes, for earthwork problem among the balance engineering, the utility model provides an adopt silt solidification technology to handle sea wall back of the body water slope, replace loess backfill processing and close gas soil, satisfy and close gas earthwork backfill and impervious requirement, extended solidified soil range of application, not only solve among the hydraulic engineering silt and stack difficult problem, open up silt utilization new approach, practiced thrift the loess cost of buying outward simultaneously.
Description of the drawings:
fig. 1 is a plan view of the present invention.
Reference numbers in the figures:
1-a sedimentation device, 2-a pipeline, 3-a tail water treatment tank, 4-a sludge drying field, 5-a conveying belt, 6-a curing device, 7-a seawall backwater slope curing structure and 8-transportation equipment.
11-a first-stage sedimentation tank, 12-a second-stage sedimentation tank, 13-a third-stage sedimentation tank, 14-a slurry inlet and 15-a sedimentation tank slurry pump.
61-curing agent stirring device, 62-mixing stirring device and 63 stirring pool.
The specific implementation mode is as follows:
the following description is provided for further illustration of the present invention with reference to specific embodiments, which are intended to be further illustrations of the principles of the present invention, without any limitation to the present invention, and the present invention is not limited to the same or similar techniques.
Referring to fig. 1, the utility model provides a silt solidification application system for seawall back of body water slope, this application system is including subsiding device 1, pipeline 2, tail water treatment pond 3, silt sunning place 4, conveyer belt 5, solidification equipment 6, seawall back of body water slope solidification structure 7.
Sedimentation device 1 is equipped with the tertiary, be one-level sedimentation tank 11 respectively, second grade sedimentation tank 12, tertiary sedimentation tank 13, 11 one end in one-level sedimentation tank sets up mud import 14, one-level sedimentation tank 11, be equipped with sedimentation tank slush pump 15 in the second grade sedimentation tank 12, mud passes through mud import 14 and gets into in one-level sedimentation tank 11, rethread sedimentation tank slush pump 15 inhales from 11 bottoms in the one-level sedimentation tank, input to second grade sedimentation tank 12 and tertiary sedimentation tank 13 step by step, sedimentation tank slush pump 15 and mud import 14, pipeline 2 adopts diagonal stagger to arrange, the route of extension mud in sedimentation tank. The primary settling tank 11, the secondary settling tank 12 and the tertiary settling tank 13 are provided with agitators for facilitating sludge flow.
Tail water in the first-stage sedimentation tank 11, the second-stage sedimentation tank 12 and the third-stage sedimentation tank 13 flows into the tail water treatment tank 3 through the pipeline 2, and pH and suspended matters of the tail water are treated by weak-acid neutralizing liquid or flocculating agent according to the condition of the tail water, so that the turbidity and the pH of the tail water are ensured to be discharged up to the standard.
The curing device 6 comprises a curing agent stirring device 61, a mixing and stirring device 62 and a stirring pool 63, the curing agent stirring device 61 adds the stirred curing agent into the stirring pool 63 layer by layer, and the curing agent is stirred by the mixing and stirring device 62 to be uniform layer by layer. The curing agent stirring device 61 mixes and stirs the curing agent according to the water-cement ratio of 0.4, and conveys the curing agent to the stirring pool 63 to be mixed with the slurry after even stirring. The mixing device 62 employs a hydraulic backhoe.
And the third-stage sedimentation tank 13 conveys the slurry subjected to the third-stage sedimentation to a sludge airing field 4 through a pipeline 2, the slurry is aired to a certain water content and then is conveyed to a stirring tank 63 through a conveying belt 5, and the slurry is conveyed to a seawall backwater slope curing structure 7 through a conveying device 8 after being uniformly stirred. The transportation equipment 8 mostly adopts a dump truck, and the dump truck is convenient to dump.
Sea wall water slope solidification structure 7, levee crown elevation 6.2m divide into the second grade platform according to stable calculation, and first grade platform crown elevation 4.50m, net width 8m, the slope ratio of connecting levee crown and first grade platform is 1, and this slope mask is the planting soil of 100cm thickness, and first grade platform and planting soil slope below are the air-tight earthwork of solidification treatment. The total width of the secondary platform is 10m, the elevation is 2.40m, and the excavated stone space is backfilled to the inner side in the later period.
The operation method of the sludge solidification application system comprises the following steps:
(1) Sludge dewatering: due to the fact that moisture content of sludge generated by foundation excavation, mudflat treatment, river excavation and the like is high, dewatering treatment is needed firstly, the sludge is conveyed to a sedimentation device 1 to undergo three-stage sedimentation, the moisture content is reduced to be below 100%, the sludge is conveyed to a sludge airing field 4 through a slurry pump to be aired until the moisture content is below 70%, and then the sludge is conveyed to a stirring pool 63 through a conveying belt 5.
(2) Preparing a curing agent: according to the test result, the powder curing agent is prepared by uniformly mixing 42.5 ordinary portland cement, S95 blast furnace slag powder, quicklime with calcium oxide content of more than 70%, sodium silicate, calcium sulfate and polyvinyl alcohol fiber with length of 5mm, and the mixing ratio is 70. The curing agent is formed by the components together with the external additive triethanolamine, and the mixing amount of the triethanolamine is 0.02 percent of the powder curing agent. The water-cement ratio is 0.4, and the mixture is conveyed to a stirring tank 63 after being uniformly stirred in a curing agent stirring device 61.
(3) Curing and mixing: the prepared curing agent and the prepared sludge are stirred by adopting a hydraulic backhoe type excavator, and the mixture is repeatedly kneaded and ground by using the hydraulic backhoe, so that the curing agent is fully contacted with the sludge, the activity of a soil body is stimulated to the maximum extent, and a good effect is achieved. The amount of each stirring is controlled to be 5m 3 ～10m 3 The stirring time is controlled to be 15-30 minutes. After the solidified soil is stirred, no solidified agent blocky substance exists, and the color and luster are consistent and uniform.
(4) Paving and filling soil: the concrete is horizontally paved, and the paving thickness is 50cm. During construction, the solidified soil is transported to a filling area of a seawall backwater slope solidified structure 7 by the transportation equipment 8, the solidified soil filler is transported to the position and roughly leveled by the excavator, a paving route is paved from one end to the other end, and the thickness of the paved road is observed. During construction, a specially-assigned person is sent to command mechanical construction to ensure the thickness of the paving layer. The single-cylinder road roller is used for layering compaction, and the operation is firstly light and then heavy, firstly slow and then fast, and firstly edge and then middle. In the pressing process, the wheel tracks of two adjacent times are overlapped by 1/3 of the wheel width, so that uniform compaction is ensured, and pressure leakage is avoided. Each layer is rolled for 6 to 10 times.
(5) And (5) maintenance: and covering by using a plastic film after filling, and watering and maintaining every day until the age is 7 d.
(6) And (3) detection: filling and tamping in layers, wherein the thickness of each layer is not more than 50cm; cohesive force C of the solidified soil is not less than 30kPa, internal friction angle phi is not less than 20 degrees (all indexes are fast shearing indexes), and permeability coefficient of the solidified soil is not more than 1 multiplied by 10 -5 cm/s。
Claims (6)
1. A silt solidification application system for seawall water slope, characterized by: this application system is including subsiding device (1), pipeline (2), tail water treatment pond (3), silt sunning place (4), conveyer belt (5), solidification equipment (6), seawall backwater slope solidification structure (7), it sets up mud import (14) to subside device (1) one end, inside is equipped with sedimentation tank slush pump (15), subside device (1) through pipeline (2) respectively with tail water treatment pond (3), silt sunning place (4) are connected through conveyer belt (5) with solidification equipment (6), solidification equipment (6) include curing agent agitating unit (61), mix agitating unit (62), stirring pond (63), solidification equipment (6) are connected through transportation equipment (8) with seawall backwater slope solidification structure (7).
2. The application system of claim 1 for curing sludge on a seawall water back slope, which is characterized in that: subside device (1) be equipped with the tertiary, be one-level sedimentation tank (11), second grade sedimentation tank (12), tertiary sedimentation tank (13) respectively, one-level sedimentation tank (11) lean on outside one end to set up mud import (14), be equipped with sedimentation tank slush pump (15) in one-level sedimentation tank (11), second grade sedimentation tank (12), each level sedimentation tank is connected with tail water treatment pond (3) through pipeline (2) respectively, tertiary sedimentation tank (13) are connected with silt sunning place (4) through pipeline (2).
3. The application system of claim 2 for curing sludge on a seawall water back slope, which is characterized in that: and stirrers are arranged in the primary sedimentation tank (11), the secondary sedimentation tank (12) and the tertiary sedimentation tank (13).
4. The application system of claim 1 for curing sludge on a seawall water back slope, which is characterized in that: the mud pump (15) of the sedimentation tank, the mud inlet (14) and the pipeline (2) are arranged in a diagonal staggered mode.
5. The application system of claim 1 for curing sludge on a seawall water back slope, which is characterized in that: the mixing and stirring device (62) adopts a hydraulic back-shoveling type excavator.
6. The application system for curing sludge on the water slope of the seawall as claimed in claim 1, wherein: the height of the top of the seawall backwater slope curing structure (7) is 6.2m, the seawall backwater slope curing structure is divided into a secondary platform, the height of the top of a primary platform is 4.50m, the clear width is 8m, the slope ratio of the top of the seawall to the primary platform is 1; the total width of the secondary platform is 10m, the elevation is 2.40m, and the excavated stone space is backfilled to the inner side in the later period.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222156022.XU CN218263878U (en) | 2022-08-16 | 2022-08-16 | Sludge curing application system for seawall water slope |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222156022.XU CN218263878U (en) | 2022-08-16 | 2022-08-16 | Sludge curing application system for seawall water slope |
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| CN218263878U true CN218263878U (en) | 2023-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324058A (en) * | 2022-08-16 | 2022-11-11 | 中国水利水电第七工程局有限公司 | Silt curing application system for seawall backwater slope and operation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115324058A (en) * | 2022-08-16 | 2022-11-11 | 中国水利水电第七工程局有限公司 | Silt curing application system for seawall backwater slope and operation method thereof |
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