CN111635111A - On-site high-precision slurry mixing system and construction method thereof - Google Patents
On-site high-precision slurry mixing system and construction method thereof Download PDFInfo
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- CN111635111A CN111635111A CN202010453483.6A CN202010453483A CN111635111A CN 111635111 A CN111635111 A CN 111635111A CN 202010453483 A CN202010453483 A CN 202010453483A CN 111635111 A CN111635111 A CN 111635111A
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- 239000002002 slurry Substances 0.000 title claims abstract description 121
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 239000008394 flocculating agent Substances 0.000 claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000003756 stirring Methods 0.000 claims abstract description 50
- 238000012546 transfer Methods 0.000 claims abstract description 21
- 239000004746 geotextile Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000012384 transportation and delivery Methods 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005189 flocculation Methods 0.000 abstract description 8
- 230000016615 flocculation Effects 0.000 abstract description 8
- 239000002689 soil Substances 0.000 description 10
- 101150054854 POU1F1 gene Proteins 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013439 planning Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
- B01F33/821—Combinations of dissimilar mixers with consecutive receptacles
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
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Abstract
The invention discloses an on-site high-precision slurry mixing system and a construction method thereof, and the technical scheme is characterized by comprising a slurry tank and a slurry input device, wherein the slurry tank is connected with the slurry input device through a pipeline, the slurry input device comprises a slurry transfer station, a flocculating agent stirring tank and a stirring device, the stirring device is provided with a first interface and a second interface, the first interface is connected with the slurry transfer station, the second interface is connected with the flocculating agent stirring tank, the stirring device is also provided with a conveying passage, and the conveying passage is connected with the slurry tank, the construction method enables the reaction of slurry and flocculating agent to be more sufficient through novel equipment formed by combining a flocculating agent pump, a slurry pump and a screw pump, realizes high precision on the amount of the flocculating agent and the amount of the slurry discharged into the screw pump, and enables the water containing the flocculating agent discharged by vacuum preloading to be recycled, thereby saving the construction cost, improving the flocculation reaction effect and accelerating the engineering speed.
Description
Technical Field
The invention relates to an on-site high-precision slurry mixing system and a construction method thereof.
Background
In recent years, land reclamation projects from the sea, dredging projects and construction site slurry treatment projects are increasing day by day, the processes of dredging, blowing filling, reinforcing and the like of soft soil are involved, how to quickly realize dehydration reinforcing of the soft soil has important significance for subsequent scientific planning of soft soil foundation design and construction, at present, a plurality of saturated soft soil reinforcing technologies are provided, a vacuum preloading method is a common method in practical projects, a plurality of scholars at home and abroad research and analyze the vacuum preloading reinforcing method through means such as theoretical analysis, model tests, field tests and the like, the effectiveness of the method is also widely recognized, but some defects still exist in practical application, and the method is specifically as follows:
in the past, the vertical drainage plate is adopted for flocculation-vacuum preloading, and equipment can be operated for vacuumizing after slurry is filled in a slurry pool by adopting the drainage plate, so that the early-stage time consumption is long, and the time cost is increased. The vertical drainage plates have large requirements on fields and cannot be widely applied to various projects, and meanwhile, the vertical drainage plates have very many silting phenomena, and the vacuum degree is deepened along the soil layer and continuously lost, so that the reinforcing effect of deep soil is not ideal, and the overall drainage quantity is small;
for the traditional flocculation-vacuum preloading reinforcement method, the reaction between the flocculating agent and the slurry is uneven in a construction site, so that the actual engineering effect is reduced, the using amount of the flocculating agent needs to be increased, and the slurry reacts with the flocculating agent as much as possible, so that the construction cost is greatly increased, and particularly for the treatment engineering of a large-area slurry pond or large-area hydraulic filling engineering of the engineering.
In previous projects, the dosing of the flocculant with the sludge was not very precise, and the sludge and flocculant were only roughly mixed together, which resulted in poor results or excessive flocculant addition, waste and thus increased costs.
Along with the progress of vacuum reinforcement, partial flocculant does not fully react, is dissolved in water and is pumped away along with the vacuum tube, and the waste of the flocculant is caused. The above-mentioned defects result in the limitation of the application of the conventional vacuum preloading consolidation method in practical engineering. Therefore, there is a need in the art to develop a more efficient and convenient vacuum preloading method.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a field high-precision slurry mixing system and a construction method thereof, and aims to enable the reaction of slurry and a flocculating agent to be more sufficient through novel equipment formed by combining a flocculating agent pump, a slurry pump and a screw pump, realize high precision on the amount of the flocculating agent and the amount of the slurry discharged into the screw pump, and recycle water containing the flocculating agent discharged by vacuum preloading, thereby saving the construction cost, improving the flocculation reaction effect and accelerating the engineering speed. And the construction method responds to the national green construction concept, saves resources to the maximum extent and reduces construction activities which have negative influence on the environment through scientific management and technical progress on the premise of ensuring the basic requirements of quality, safety and the like, and realizes four-section one-environment protection.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an on-spot high accuracy mud hybrid system, includes mud pond and mud input device, adopt the pipe connection between mud pond and the mud input device, mud input device includes mud transfer station, flocculating agent agitator tank and agitating unit, the last first interface and the second interface that is provided with of agitating unit, first interface is connected with the mud transfer station, and the second interface is connected with the flocculating agent agitator tank, the last transfer passage that still is provided with of agitating unit, the transfer passage is connected with the mud pond.
Further, agitating unit includes threaded pump, flocculating agent pump, slush pump and holds the chamber, the flocculating agent pump sets up on the second interface, the slush pump sets up on first interface, adopt mud transportation union coupling between mud transfer station and the slush pump, adopt flocculating agent transport pipe to connect between flocculating agent agitator tank and the flocculating agent pump, when mud and flocculating agent were carried to holding the intracavity, the threaded pump was used for stirring mud and flocculating agent evenly, transports to the mud pond in from the transfer passage again.
Further, be provided with many horizontal drain plates in the mud pit, external drainage takeover on the horizontal drain plate, the drainage takeover is connected with the harrow type union coupling, the harrow type union coupling is kept away from the one end and the vacuum pump connection that the drainage was taken over, the external conveyer pipe of vacuum pump, the conveyer pipe is connected with the flocculating agent agitator tank.
Further, be provided with water inlet and delivery port on the vacuum pump, the water inlet is connected with the drainage takeover, be provided with entry and export on the flocculating agent agitator tank, water inlet and entry linkage, delivery port and exit linkage make in the flocculating agent agitator tank and the vacuum pump in the water accomplish closed loop hydrologic cycle.
Further, horizontal drainage plate includes many inside hollow circular posts, the circular post is outside to be enclosed and is equipped with the filter, be provided with the round hole that a plurality of water supplies flowed through on the filter, circular post side is provided with a plurality of wash ports, is provided with the connecting plate between the circular post adjacent wantonly, the connecting plate encloses with circular post and filter three and establishes the space that forms the holding water body.
A construction method of on-site high-precision slurry is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: excavating a mud pit, determining the plane arrangement of horizontal drainage plates according to the size of the excavated mud pit, and reasonably controlling the distance between the horizontal drainage plates;
step two: the left side wall and the right side wall of the mud pit are respectively and vertically provided with a drainage connecting pipe; connecting a drainage connecting pipe with the horizontal drainage plate-geotextile composition, binding geotextile ropes around the geotextile for connecting with steel pipes around the mud pit, laying the first layer of horizontal drainage plate-geotextile composition at the bottom of the mud pit, and respectively connecting corresponding pipelines with a vacuum meter and a vacuum pump;
step three: determining the optimal type, the addition amount and the proportion of the flocculating agent to water of the mud to be consolidated;
step four: adding a flocculating agent and corresponding water into a flocculating agent stirring tank, opening a machine for pre-stirring, installing a steel pipe on the side surface of the flocculating agent stirring tank, opening a hole, introducing compressed air and stirring with a stirring paddle together, fully mixing the flocculating agent and the water and quickly stirring, wherein no large-particle flocculating agent exists after the flocculating agent is fully dissolved, so that the machine is prevented from being blocked by a flocculating agent solution in a transportation project;
step five: starting connection among the devices, connecting a flocculating agent conveying pipe and a flocculating agent pump of a flocculating agent stirring tank with a customized screw pump, then connecting a slurry pump with a slurry conveying pipe, and connecting a containing cavity with a conveying pipeline to a slurry pool;
step six: starting a flocculant pump, a slurry pump and a screw pump, regulating and controlling the flow on each customized pump flow control meter, conveying the slurry into the screw pump, conveying the flocculant into the screw pump, and mixing and stirring the slurry and the flocculant in the screw pump;
step seven: pouring the slurry into a slurry tank, starting a vacuum pump to drain after the slurry reaches about a centimeter, continuously laying a second layer of horizontal drainage plate-geotextile composition after the pumped water is nearly exhausted, binding the second layer of horizontal drainage plate-geotextile composition with steel pipes around the slurry tank, and continuously pouring the slurry after the second layer of horizontal drainage plate-geotextile composition is laid;
step eight: and (3) repeatedly pouring the slurry, and paving the geotextile-horizontal drainage plate until the whole slurry pool (1) is filled.
The invention has the beneficial effects that:
1. the slurry and the flocculating agent in the whole project are mixed by a mixing system of scientific and technological equipment, so that the accurate proportioning of each dosage is realized. The former rough and low-precision adding mode is replaced by high-precision proportioning, so that the quality of the whole engineering is improved.
2. The efficiency of slurry and flocculation reaction is improved, and when the difference between the field engineering and the expected flocculation drainage effect exists, the flow can be conveniently regulated and controlled at any time, so that the mixing proportion of the flocculating agent and the slurry is quickly changed, and the better flocculation drainage effect can be kept in the whole engineering duration;
3. the flocculant solution and the slurry are introduced into a customized screw pump, wherein a stirring propeller rotates at a high speed to accelerate the diffusion of substances, and the dissolution reaction speed is increased after the diffusion speed is increased, so that the reaction of the flocculant and the slurry is improved, the engineering effect is improved, the usage amount of the flocculant is reduced, and the construction cost is reduced;
4. the water discharged from the mud pit can be recycled, and the pumped water is input into the flocculating agent stirring tank again through the vacuum pump, so that the utilization rate of the flocculating agent is improved. Moreover, as the flocculant is carried by the circulating water and is continuously added according to the proportion of the original water and the flocculant, the concentration of the flocculant in the slurry is always maintained at a level higher than the set concentration, the flocculation effect is improved, the treatment cost can be reduced, the waste of resources is also reduced, and the resources are promoted to be reasonably allocated; for example, water discharged during vacuumizing enters a flocculating agent stirring tank in a circulating mode, the water contains flocculating agents, 200g of flocculating agents are supposed to be added into every 1kg of water, after the vacuumized water is recycled, 30g of flocculating agents are supposed to be remained in 1kg of water, after 200g of flocculating agents are added again, the flocculating agent content in every 1kg of water is always higher than the set 200g content, when a flocculating agent test is carried out indoors, economy is comprehensively considered, in all aspects of effects, an optimal doping amount is selected, and the overall effect can be improved when the originally set amount is slightly higher.
5. In the vacuum preloading process, a large amount of water containing the flocculating agent is discharged from the drainage plate and circularly introduced into the flocculating agent stirring tank, so that the expenditure of water resources is reduced, and the overall engineering cost is reduced;
6. along with the process of vacuumizing, a horizontal drainage plate-geotextile composition is gradually laid and slurry is poured, the pressure is gradually increased above the upper part, the upper layer soil body has a dead weight pressure on the lower layer soil body, the lower layer soil body is compressed, and the drainage of the lower layer soil body is enhanced; the water pumped to be vacuum is circularly pumped, so that the water consumption of the project can be reduced, and the cost expenditure is reduced. Green engineering advocated by the government is realized;
7. the traditional single independent pump is combined together, only a slurry pump is generally arranged on the market, the slurry pump is provided, a flocculating agent pump is provided, a screw pump is customized, 3 pumps are assembled together to form an integral type, but the flow of the pumps can be controlled independently, the flocculating agent pump is very accurate, after the conventional flocculating agent is stirred, the flocculating agent pump directly pumps the flocculating agent pump together with slurry into a slurry tank, so that the mixing is not uniform, the reaction is insufficient, the flocculating agent does not react with the slurry sufficiently, and a plurality of flocculating agents are added into the slurry pump to cause waste, and the whole flocculation effect is not good. Through the customized three-in-one pump assembled into a whole, the flocculating agent and the slurry are fully stirred in the screw pump, which means full reaction, and then the treatment effect of the engineering is ensured.
Drawings
FIG. 1 is a layout of the novel flocculant-horizontal drainage plate for treating sludge provided by the present invention;
FIG. 2 is a schematic view of a screw pump in connection with a flocculant pump and a slurry pump;
FIG. 3 is a schematic diagram of the vacuum pump and flocculant agitator tank connection;
FIG. 4 is a schematic structural view of a horizontal drainage plate;
FIG. 5 is a schematic view showing a connection structure between a plurality of circular pillars;
fig. 6 is a schematic sectional view of a horizontal drainage plate.
Reference numerals: 1. a mud pit; 11. a conveying path; 2. a slurry input device; 21. a slurry transfer station; 22. a flocculant stirring tank; 221. an inlet; 222. an outlet; 23. a stirring device; 231. a first interface; 232. a second interface; 3. a screw pump; 31. a flocculant pump; 32. a slurry pump; 33. an accommodating chamber; 4. a slurry transport pipe; 5. a flocculant conveying pipe; 6. a horizontal drainage plate; 61. a circular column; 62. a filter plate; 63. a circular hole; 64. a drain hole; 65. a connecting plate; 7. a drainage pipe connection; 8. a rake connector; 81. a vacuum pump; 811. a water inlet; 812. a water outlet; 82. a delivery pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1 to 6, the on-site high-precision slurry mixing system of the embodiment includes a slurry tank 1 and a slurry input device 2, the slurry tank 1 and the slurry input device 2 are connected by a pipeline, the slurry input device 2 includes a slurry transfer station 21, a flocculant stirring tank 22 and a stirring device 23, the stirring device 23 is provided with a first interface 231 and a second interface 232, the first interface 231 is connected with the slurry transfer station 21, the second interface 232 is connected with the flocculant stirring tank 22, the stirring device 23 is further provided with a conveying channel 11, and the conveying channel 11 is connected with the slurry tank 1.
The concrete improvement is that, as shown in fig. 1, a slurry input device 2 is connected with a slurry tank 1, the slurry input device 2 includes a slurry transfer station 21, a flocculant mixing tank 22 and a mixing device 23, slurry is disposed in the slurry transfer station 21, a flocculant is disposed inside the flocculant mixing tank 22, the slurry and the flocculant are simultaneously input into the mixing device 23, the slurry and the flocculant are fully mixed in the mixing device 23 and are conveyed into the slurry tank 1 through a conveying passage 11 for vacuum preloading, wherein a first interface 231 and a second interface 232 are disposed on the mixing device 23, the first interface 231 is used for being linked with the slurry transfer station 21, the second interface 232 is used for being connected with the flocculant mixing tank 22, and fastening devices are disposed at both the first interface 231 and the second interface 232 (the fastening devices mentioned here are prior art, and are structures that can be realized by those skilled in the art, and therefore not described more herein).
As a modified specific embodiment, the stirring device 23 includes a screw pump 3, a flocculant pump 31, a mud pump 32 and a containing cavity 33, the flocculant pump 31 is disposed on the second interface 232, the mud pump 32 is disposed on the first interface 231, the mud transfer station 21 is connected with the mud pump 32 by using a mud conveying pipe 4, the flocculant mixing tank 22 is connected with the flocculant pump 31 by using a flocculant conveying pipe 5, and when the mud and the flocculant are conveyed into the containing cavity 33, the screw pump 3 is used for uniformly mixing the mud and the flocculant and then conveying the mud and the flocculant from the conveying passage 11 to the mud pit 1.
The above specific improvement is that, as shown in fig. 1 and fig. 2, the stirring device 23 comprises a screw pump 3, a flocculant pump 31, a slurry pump 32 and a containing cavity 33, the flocculant pump 31 is arranged on the second interface 232, the slurry pump 32 is arranged on the first interface 231, when the slurry and the flocculant are pumped into the containing cavity 33, the screw pump 3 is started to rotate, so as to fully stir the slurry and the flocculant, it is worth mentioning that in the prior art, the previous separate flocculant pump 31 and the previous separate slurry pump 32 are only separately pumped into the slurry tank 1, so that the reaction between the flocculant and the slurry is not uniform and sufficient, in this embodiment, the key for realizing the full reaction between the flocculant and the slurry is that the flocculant and the slurry are both transferred into the screw pump 3, because the inertia force of the rotary part in the pump is low, so that a high rotating speed can be used, and the slurry and the flocculant liquid can be well fused and reacted in the radial direction under the centrifugal force and the high-speed rotation, the effective molecules in the liquid of the flocculating agent move at high speed and collide with slurry particles, so that the reaction probability is greatly increased, the utilization rate of the flocculating agent is improved, the flocculating agent and the slurry are promoted to be fully stirred uniformly and react, simultaneously, the slurry-flocculating agent is promoted to form large particle cluster blocks, the slurry is prevented from blocking the drainage plate, the service life of the drainage plate is greatly prolonged, and the segregated water can be discharged smoothly and thoroughly.
As a modified specific embodiment, a plurality of horizontal drainage plates 6 are arranged in the mud pit 1, a drainage connecting pipe 7 is externally connected to each horizontal drainage plate 6, the drainage connecting pipe 7 is connected with a rake connector 8, one end, far away from the drainage connecting pipe 7, of the rake connector 8 is connected with a vacuum pump 81, the vacuum pump 81 is externally connected with a conveying pipe 82, and the conveying pipe 82 is connected with a flocculant stirring tank 22.
In the concrete modification, as shown in fig. 3, during the air suction and drainage, the moisture in the slurry passes through the horizontal drainage plate 6 and reaches the water ring vacuum pump 81 along the pipe, and the vacuum pump 81 performs the air suction and drainage.
As a modified specific embodiment, the vacuum pump 81 is provided with a water inlet 811 and a water outlet 812, the water inlet 811 is connected with the water discharge connection pipe 7, the flocculant stirring tank 22 is provided with an inlet 221 and an outlet 222, the water inlet 811 is connected with the inlet 221, and the water outlet 812 is connected with the outlet 222, so that the water in the flocculant stirring tank 22 and the water in the vacuum pump 81 complete closed-loop water circulation.
The concrete improvement is that after the moisture of the slurry reaches the water ring vacuum pump 81 through the horizontal drainage plate 6 along the pipeline, the moisture enters through the water inlet 811 of the vacuum pump 81, the water is continuously supplemented into the vacuum pump 81, so that the vacuum pump 81 can be kept in a good working state, meanwhile, the redundant moisture is discharged from the water outlet 812 of the vacuum pump 81, and the water containing the flocculating agent is conveyed back to the flocculating agent stirring tank 22 through the conveying pipe 82, so that the utilization rate of the flocculating agent is improved, the concentration of the flocculating agent in the slurry is always maintained at a level higher than the set concentration, the flocculating effect is improved, and the flocculating reaction is always higher than the expected standard. And the water is always in the internal circulation and is repeatedly used for the engineering, the key for controlling the efficiency of the whole engineering is the flow control of the pump in the engineering running process, if the overall treatment effect of the engineering is not ideal compared with the expected effect, an upward arrow on a flow control table of the flocculating agent pump can be shifted to increase the output quantity of the flocculating agent. If the treatment is perceived to be effective, it is calculated and observed that the amount of flocculant can be reduced appropriately to reduce the cost of the process, and the output of flocculant can be reduced by a down button on the flocculant pump flow control meter. Meanwhile, along with the continuous operation of the engineering, the discharged water after vacuum preloading enters the flocculant stirring tank through the vacuum pump to be recirculated, the discharged water contains the flocculant, and the flocculant concentration of the original dosage does not need to be added again through gradual accumulation until the later stage, and the flow is regulated and controlled by using a flow control meter on the pump at the moment. If the flow between the two flows is to be returned after a period of time, the return button on the control table can be clicked to return to the originally set flow. The appearance of high accuracy flocculation hybrid system has reduced a large amount of manpower and materials to the treatment effeciency has been promoted (this control system is prior art).
As an improved specific embodiment, the horizontal drainage plate 6 includes a plurality of circular columns 61 with hollow interiors, a filter plate 62 is arranged around the circular columns 61, a plurality of circular holes 63 for water to flow through are arranged on the filter plate 62, a plurality of drainage holes 64 are arranged on the side surface of each circular column 61, a connecting plate 65 is arranged between any adjacent circular columns 61, and the connecting plate 65, the circular columns 61 and the filter plate 62 form a space for containing water.
The above-mentioned specific improvement is, as shown in fig. 4, 5 and 6, horizontal drainage plate 6 includes a plurality of circular posts 61, and drainage takeover 7 is connected with circular post 61, and the circular post 61 outside sets up filter 62, and after vacuum pump 81 opened, moisture in the mud can get into in the round hole 63, finally gets into circular post 61 after establishing the space that forms the holding water body through connecting plate 65 and circular post 61 and filter 62 three, through drainage takeover 7 with moisture discharge.
A construction method of on-site high-precision slurry is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: excavating a mud pit 1, determining the plane arrangement of horizontal drainage plates 6 according to the size of the excavated mud pit 1, and reasonably controlling the distance between the horizontal drainage plates 6;
step two: the left side wall and the right side wall of the mud pit 1 are respectively and vertically provided with a drainage connecting pipe 7; connecting the horizontal drainage plate 6-geotextile composition with the drainage connecting pipe 7, binding geotextile ropes around the geotextile for connecting with steel pipes around the mud pit 1, laying the first layer of horizontal drainage plate 6-geotextile composition at the bottom of the mud pit 1, and respectively connecting corresponding pipelines with a vacuum meter and a vacuum pump 81;
step three: determining the optimal type, the addition amount and the proportion of the flocculating agent to water of the mud to be consolidated;
step four: adding a flocculating agent and corresponding water into a flocculating agent stirring tank 22, opening a machine for pre-stirring, installing a steel pipe on the side surface of the flocculating agent stirring tank, opening a hole, introducing compressed air and stirring with a stirring paddle together, fully mixing the flocculating agent and the water and quickly stirring, wherein no large-particle flocculating agent exists after the flocculating agent is fully dissolved, so that the machine is prevented from being blocked by a flocculating agent solution in a transportation project;
step five: starting connection among the devices, connecting a flocculant conveying pipe 5 and a flocculant pump 31 of a flocculant stirring tank 22 with a customized screw pump, then connecting a slurry pump 32 with a slurry conveying pipe 4, and connecting a containing cavity 33 with a conveying pipeline 11 to a slurry pool 1;
step six: starting a flocculant pump 31, a slurry pump 32 and a screw pump, regulating and controlling the flow on each customized pump flow control meter, conveying the slurry into the screw pump, conveying the flocculant into the screw pump, and mixing and stirring the slurry and the flocculant in the screw pump;
step seven: pouring the slurry into the slurry tank 1, starting a vacuum pump 81 for draining after the slurry reaches about 30 cm, continuously laying a second layer of horizontal drainage plate 6-geotextile composition after the pumped water is nearly exhausted, binding the second layer of horizontal drainage plate with steel pipes around the slurry tank 1, and continuously pouring the slurry after the second layer of horizontal drainage plate 6-geotextile composition is laid;
step eight: and (3) repeatedly pouring the slurry, and paving the geotextile-horizontal drainage plate 6 until the whole slurry pool 1 is filled.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (6)
1. The utility model provides an on-spot high accuracy mud hybrid system which characterized in that: including mud pit (1) and mud input device (2), adopt the pipe connection between mud pit (1) and mud input device (2), mud input device (2) are including mud transfer station (21), flocculating agent agitator tank (22) and agitating unit (23), be provided with first interface (231) and second interface (232) on agitating unit (23), first interface (231) are connected with mud transfer station (21), and second interface (232) are connected with flocculating agent agitator tank (22), still be provided with transfer passage (11) on agitating unit (23), transfer passage (11) are connected with mud pit (1).
2. The in situ high precision mud mixing system of claim 1, wherein: agitating unit (23) are including threaded pump (3), flocculating agent pump (31), slush pump (32) and hold chamber (33), flocculating agent pump (31) set up on second interface (232), slush pump (32) set up on first interface (231), adopt mud conveying pipe (4) to connect between mud transfer station (21) and slush pump (32), adopt flocculating agent transport pipe (5) to connect between flocculating agent agitator tank (22) and flocculating agent pump (31), when mud and flocculating agent are carried to holding chamber (33) in, threaded pump (3) are used for stirring mud and flocculating agent evenly, transport to mud pit (1) from transfer passage (11) again.
3. The in situ high precision mud mixing system of claim 2, wherein: be provided with many horizontal drain bar (6) in mud pit (1), external drainage takeover (7) is gone up in horizontal drain bar (6), drainage takeover (7) are connected with harrow connector (8), the one end that drainage takeover (7) was kept away from in harrow connector (8) is connected with vacuum pump (81), the external conveyer pipe (82) of vacuum pump (81), conveyer pipe (82) are connected with flocculating agent agitator tank (22).
4. The in situ high precision mud mixing system of claim 3, wherein: be provided with water inlet (811) and delivery port (812) on vacuum pump (81), water inlet (811) are connected with drainage takeover (7), be provided with entry (221) and export (222) on flocculating agent agitator tank (22), water inlet (811) are connected with entry (221), delivery port (812) are connected with export (222) and make in flocculating agent agitator tank (22) and vacuum pump (81) water in accomplish closed loop water cycle.
5. The in situ high precision mud mixing system of claim 4, wherein: horizontal drainage board (6) include many inside hollow circular post (61), circular post (61) outside is enclosed and is equipped with filter (62), be provided with round hole (63) that a plurality of confession water flowed through on filter (62), circular post (61) side is provided with a plurality of wash ports (64), is provided with connecting plate (65) between arbitrary adjacent circular post (61), connecting plate (65) enclose with circular post (61) and filter (62) three and establish the space that forms the holding water body.
6. The construction method of the on-site high-precision slurry according to claim 5, characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: excavating a mud pit (1), determining the plane arrangement of horizontal drainage plates (6) according to the size of the excavated mud pit (1), and reasonably controlling the distance between the horizontal drainage plates (6);
step two: a drainage connecting pipe (7) is vertically arranged on the left side wall and the right side wall of the mud pit (1) respectively; connecting a drainage connecting pipe (7) with the horizontal drainage plate (6) -geotextile composition, binding a geotextile rope around the geotextile for connecting with a steel pipe around the mud pit (1), laying the first layer of horizontal drainage plate (6) -geotextile composition at the bottom of the mud pit (1), and respectively connecting corresponding pipelines with a vacuum meter and a vacuum pump (81);
step three: determining the optimal type, the addition amount and the proportion of the flocculating agent to water of the mud to be consolidated;
step four: adding a flocculating agent and corresponding water into a flocculating agent stirring tank (22), opening a machine for pre-stirring, installing a steel pipe on the side surface of the flocculating agent stirring tank, opening a hole, introducing compressed air and stirring with a stirring paddle together for stirring, so that the flocculating agent and the water are fully mixed and quickly stirred, and no large-particle flocculating agent exists after the flocculating agent is fully dissolved, so that the machine is prevented from being blocked by a flocculating agent solution in a transportation project;
step five: starting connection among the devices, connecting a flocculating agent conveying pipe (5) and a flocculating agent pump (31) of a flocculating agent stirring tank (22) with a customized screw pump, then connecting a slurry pump (32) with a slurry conveying pipe (4), and connecting a containing cavity (33) with a conveying pipeline (11) into a slurry pool (1);
step six: starting a flocculant pump (31), a slurry pump (32) and a screw pump, regulating and controlling the flow on a flow control meter of each customized pump, conveying the slurry into the screw pump, conveying the flocculant into the screw pump, and mixing and stirring the slurry and the flocculant in the screw pump;
step seven: pouring the slurry into the slurry tank (1), starting a vacuum pump (81) to drain after the slurry reaches about 30 cm, continuously laying a second layer of horizontal drainage plate (6) -geotextile composition after the pumped water is nearly exhausted, binding the horizontal drainage plate-geotextile composition with steel pipes around the slurry tank (1), and continuously pouring the slurry after the horizontal drainage plate-geotextile composition is laid;
step eight: and (3) repeatedly pouring the slurry, and paving the geotextile-horizontal drainage plate (6) until the whole slurry pool (1) is filled.
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| EP4431468A1 (en) * | 2023-03-13 | 2024-09-18 | Arman Oy | Dewatering system and method |
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