CN115947516A - Method for treating fluid mud by vacuum preloading - Google Patents
Method for treating fluid mud by vacuum preloading Download PDFInfo
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- CN115947516A CN115947516A CN202211658487.3A CN202211658487A CN115947516A CN 115947516 A CN115947516 A CN 115947516A CN 202211658487 A CN202211658487 A CN 202211658487A CN 115947516 A CN115947516 A CN 115947516A
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 34
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Abstract
The invention relates to the technical field of fluid mud vacuum preloading rapid processing, in particular to a method for processing fluid mud by vacuum preloading, which comprises the following steps: excavating a storage yard, and adding a retaining wall structure on four walls of the storage yard; paving a cushion layer and a vacuum tube at the bottom of the storage yard, arranging a water suction pipeline which is communicated with a vacuum pump, filling the fluid mud into the storage yard, and simultaneously adding quicklime, fenton reagent and peanut shells; laying a cover plate, and extending the vibrating device into the fluid mud; laying a sealing film on the surface of the cover plate, arranging a film pressing ditch around the field stack and arranging a pressing plate on the cover plate by the cofferdam; starting a driving device to drive a vacuum pump and a vibrating device, and starting a pressure applying device at the same time; after the preset requirement is met, closing the driving device and the pressing device and dismantling; and (4) carrying out internal element determination on the treated flow state mud in the storage yard, and selecting matched crops for planting. The invention can achieve the purposes of improving the mud-water separation effect, increasing the silt soil dehydration efficiency and improving the cultivability.
Description
Technical Field
The invention relates to the technical field of vacuum preloading rapid treatment of fluid mud, in particular to a method for treating fluid mud by vacuum preloading.
Background
A large amount of high-water-content fluid mud such as sludge, dredged mud and the like can be generated in construction activities such as river and lake dredged mud, sewage treatment, channel dredging and the like; how to treat the fluid mud is to change the fluid mud into land resources such as usable arable land, filled soil and the like, and reduce the damage of wastes to the ecological environment, which is a practical problem to be solved urgently.
At present, prepressing consolidation is a common method for treating large-volume fluid mud, and water in the fluid mud is quickly discharged under the action of additional pressure by applying positive pressure or vacuum negative pressure on the fluid mud so as to fulfill the aim of consolidating the fluid mud; it should be noted that although the flow state is processed by the pre-pressing consolidation method, the cost is low, the processing time is long, meanwhile, the applied positive pressure is difficult to be transferred downwards on the silt soil, the pressure distribution is uneven, the drainage quantity of the silt soil on the upper layer is higher than that of the silt soil on the lower layer, the drainage efficiency of the silt soil on the lower layer is low, in addition, the plowing property of the dredged mud after direct vacuum processing is poor, and further measures are needed to improve the plowing property, so a method for processing the flow state mud by vacuum pre-pressing is urgently needed to solve the problem.
Disclosure of Invention
The invention aims to provide a method for treating fluid mud by vacuum preloading, which aims to solve the problems and achieve the aims of improving the mud-water separation effect, increasing the mud-soil dehydration efficiency and improving the cultivability.
In order to achieve the purpose, the invention provides the following scheme:
a method for processing fluid mud by vacuum preloading comprises the following steps:
s1, excavating a storage yard, and adding a retaining wall structure on four walls of the storage yard;
s2, laying a cushion layer and a vacuum pipe at the bottom of the storage yard, arranging a water suction pipeline to enable the vacuum pipe to be communicated with a vacuum pump, and connecting the vacuum pump with a driving device in a transmission way;
s3, filling the fluid mud into the yard through a pumping pipeline until the whole yard is filled, and adding quicklime, fenton reagent and peanut shells into the fluid mud during filling;
s4, laying the cover plate on the top of the fluid mud, and extending the vibrating device into the fluid mud, wherein the vibrating device is in transmission connection with the driving device;
s5, laying a sealing film on the surface of the cover plate, arranging a film pressing ditch and a cofferdam around the field pile, and laying geotextile on the surface of the field pile;
sixthly, arranging a pressing plate on the cover plate, wherein the pressing plate is in transmission connection with a pressing device;
s7, starting a driving device to drive a vacuum pump and a vibrating device, and simultaneously starting a pressure applying device;
s8, when the water yield of the fluid mud is reduced and the sedimentation is reduced, and the preset requirement is met, closing the driving device and the pressing device and dismantling the driving device and the pressing device;
s9, measuring internal elements of the treated in-yard flow state mud, and selecting matched crops for planting.
Preferably, in S1, the retaining wall structure is a wood board, and the thickness of the wood board is 5cm to 10cm.
Preferably, in S2, the mat layer is a sandy soil mat layer, the sandy soil mat layer has a thickness of 30cm to 50cm, the vacuum pipe is embedded in the sandy soil mat layer, the water suction pipeline is mounted on the vacuum pipe and communicated with the vacuum pump, one end of the vacuum pipe is communicated with the vacuum pump arranged on the ground through a pipeline, and the pipeline is arranged in soil on one side of the field pile.
Preferably, in the step S3, the height of the fluid mud blown into the yard through the pumping pipeline is 20cm per liter, and quicklime, fenton reagent and peanut shells are added into the fluid mud.
Preferably, the total mass of the quicklime accounts for 10-30% of the total mass of the fluidized mud by dry weight, and the quicklime is added in batches along with the height, and is stirred by a stirring machine after each addition.
Preferably, a field pilot test is carried out before the Fenton reagent is added to determine the proportion and the mixing amount of ferrous sulfate and hydrogen peroxide in the Fenton reagent; h 2 O 2 /Fe 2+ Ratio 3/1-5/1, fe 2+ The adding amount is 25-50mg/g, firstly, the ferrous sulfate is prepared into a solution according to the proportion of 1.
Preferably, the particle size of the peanut shells is about 0.5mm, the total mass of the peanut shells is 40% of the dry weight of the fluid mud according to the dry weight of the fluid mud, the peanut shells are added in batches along with the height, and the peanut shells are stirred by a stirring machine after each addition.
Preferably, in S7, a manner of intermittent vacuum preloading is adopted to consolidate the fluid mud in the yard, the driving device and the pressure applying device are started and continued for a while, and when the water yield of the vacuum pump is found to be significantly reduced, the driving device and the pressure applying device are stopped, and after standing for 2h to 3h, the driving device and the pressure applying device are restarted.
Preferably, the water suction pipeline is a straw rope formed by weaving straws.
The invention has the following technical effects: 1) The retaining wall structures additionally arranged on the four walls of the storage yard can resist the side soil pressure generated by soil, and after the storage yard is filled with the fluid mud, the retaining wall enables the side soil pressure to uniformly act on the side surface of the fluid mud to form a state of extruding from the periphery to the middle.
2) The quick lime that the fluid state mud filling in-process mixes has the effect of disinfection, disinfect to the fluid state mud through quick lime, avoid causing soil pollution, make ready for replanting after the fluid state mud dehydration, the oxidation of fenton reagent can make the organic matter oxidation in the mud be carbon dioxide and water, get rid of fluid state mud stink, make the air obtain purifying, the effect of peanut shell is the skeleton texture who forms porous multichannel in the fluid state mud, the structural strength of reinforcing fluid state mud granule, and then permeability and the dehydration nature of increasing fluid state mud under the high pressure condition, improve dehydration efficiency, simultaneously after a period, the peanut shell degrades and fuses into the fluid state mud after the solidification, increase fertility for the fluid state mud.
3) The vibrating device and the water absorbing pipeline are arranged in the flow state mud at intervals, so that when the volume of a storage yard is certain, the vibrating device stretching into the flow state mud can extrude the flow state mud, the water in the flow state mud is extruded out, and the water in the flow state mud moves towards the water absorbing pipeline, so that the dewatering efficiency is improved.
4) The pressure applying plate can be downwards extruded under the action of the pressure applying device, positive pressure is applied to the upper part of the fluid mud, the vacuum pump forms negative pressure in the vacuum tube and the water suction pipeline, and the vibration device vibrates to enable moisture in the fluid mud to be separated out more quickly, so that the fluid mud consolidation efficiency is greatly improved.
5) The sand cushion sets up in the bottom of silt store yard, is favorable to being close to the flow state mud moisture content of sand cushion and is absorbed by bottom sand cushion, and then makes the flow state mud of bottom also can obtain effectual reinforcement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is an enlarged view of a portion of the invention shown at B in FIG. 2.
Wherein, 1, soil; 2. sand and soil; 3. protecting the wall; 4. a vacuum tube; 5. a communicating pipe; 6. a column; 7. a support; 8. a first base plate; 9. a lifting rod; 10. a slider; 11. a connecting rod; 12. pressing a plate; 13. a cover plate; 14. a negative pressure Roots blower; 15. a pneumatic motor; 16. a vacuum pump; 17. a positive pressure Roots blower; 18. a suction pipe; 19. a vibrating rod; 20. an air inlet pipe; 21. an air outlet pipe; 22. fluidized mud; 23. a hinged lever; 24. a hinged seat; 1901. a housing; 1902. a first separator; 1903. an air inlet cavity; 1904. a second separator; 1905. a second intake pipe; 1906. a second air outlet pipe; 1907. a third intake pipe; 1908. a third air outlet pipe; 1909. an air outlet; 1910. rotating the connecting rod; 1911. a third separator; 1912. an eccentric block; 1913. a club head; 1914. an air outlet cavity; 1801. a main water-absorbing pipe; 1802. a water absorption branch pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, the invention provides a method for processing fluid mud by vacuum preloading, which comprises the following steps:
s1, excavating a storage yard, and adding a retaining wall structure on four walls of the storage yard;
s2, laying a cushion layer and a vacuum pipe at the bottom of the storage yard, arranging a water suction pipeline to enable the vacuum pipe to be communicated with a vacuum pump, and connecting the vacuum pump with a driving device in a transmission way;
s3, filling the fluid mud into the yard through a pumping pipeline until the whole yard is filled, and adding quicklime, fenton reagent and peanut shells into the fluid mud during filling;
s4, laying a cover plate on the top of the fluid mud, extending a vibrating device into the fluid mud, and connecting the vibrating device with a driving device in a transmission manner;
s5, laying a sealing film on the surface of the cover plate, and laying geotextile on the surface of the field pile after arranging a film pressing ditch and a cofferdam around the field pile;
sixthly, arranging a pressing plate on the cover plate, wherein the pressing plate is in transmission connection with a pressing device;
s7, starting a driving device to drive a vacuum pump and a vibrating device, and simultaneously starting a pressure applying device;
s8, when the water yield of the fluid mud is reduced and the sedimentation is reduced, and the preset requirement is met, closing the driving device and the pressing device and dismantling the driving device and the pressing device;
and S9, measuring internal elements of the treated in-yard flow state mud, and selecting matched crops for planting.
When the method is used, the retaining wall structures additionally arranged on the four walls of the storage yard after the storage yard is excavated can resist the side soil pressure generated by soil, and after the storage yard is filled with the fluid mud, the retaining wall enables the side soil pressure to uniformly act on the side surface of the fluid mud to form a situation of extruding from the periphery to the middle. Under the action of the vacuum pump, negative pressure is formed in the vacuum pipe and the water suction pipeline laid at the bottom of the storage yard, so that water in the fluid mud moves towards the vacuum pipe along the water suction pipe and is finally pumped to the ground surface by the vacuum pump. The water suction pipelines are arranged at the bottom of the storage yard in a matrix manner. Mixing lime, fenton reagent and peanut shell in the flow state mud filling process, the lime has the effect of disinfection, carries out disinfection to flow state mud through the lime, avoids causing soil pollution, for flow state mud dehydration back repoussion ready, the lime has the flocculation simultaneously, can accelerate flow state mud dead weight deposit to the permeability and the structurality of flow state mud have been improved, the moisture content in the observation flow state mud, moisture is more, then it is more to mix into quick lime. The oxidation of fenton's reagent can make organic matter oxidation in the mud be carbon dioxide and water, gets rid of flow state mud stink, makes the air obtain purifying, the effect of peanut shell is the skeleton texture that forms porous multichannel in the flow state mud, the structural strength of reinforcing flow state mud granule, and then permeability and the dehydration nature of flow state mud under the increase high pressure condition improve dehydration efficiency, simultaneously after a period, during peanut shell degradation melts the flow state mud after the solidification, for flow state mud increases fertile nature. Cover the apron on the flow state mud surface afterwards, the device of vibrating stretches into in the flow state mud along with the apron lock, the device of vibrating is a plurality of and be the matrix distribution in the bottom of apron, it is the interval arrangement just to notice the distribution of device of vibrating and water absorption pipeline in the flow state mud, the mode of arranging like this makes when the certain circumstances of storage yard volume, the device of vibrating that stretches into in the flow state mud plays the extrusion effect to the flow state mud, extrude the moisture in the flow state mud, make the moisture in the flow state mud remove to the water absorption pipeline, in order to improve dehydration efficiency. Lay 2-3 layers of seal membrane on apron surface, excavate around the seal membrane and form the pressure membrane ditch, the pressure membrane ditch is located the cofferdam inboard, buries the stickness soil in the pressure membrane ditch, and its effect is in the realization of the sealed environment of attitude mud reinforcing area formation in order to guarantee the evacuation environment, and the end of vacuum tube stretches out the seal membrane and couples with the vacuum pump, and sealed through sealed glue in the position that the vacuum tube stretches out the seal membrane, leakproofness when further guaranteeing the evacuation. The pressure application plate on the cover plate, the pressure application plate can be downwards extruded under the action of the pressure application device, the driving device is started to drive the vacuum pump and the vibrating device, the pressure application device is started simultaneously, the vacuum pump forms negative pressure in the vacuum tube and the water suction pipeline, the pressure application plate extrudes the fluid-state mud simultaneously, positive pressure is applied to the upper portion of the fluid-state mud, the vibrating device vibrates to enable moisture in the fluid-state mud to be separated out more quickly, the fluid-state mud consolidation efficiency is greatly improved, after the vacuumizing process is maintained for a period of time, the unit water yield in the vacuum tube is observed to be remarkably reduced, the device is started again after standing, until no water is discharged from the vacuum tube, the fluid-state mud settlement amount is not changed any more, the driving device and the pressure application device are closed and removed, and the consolidation of the fluid-state mud is completed. And (4) measuring internal elements of the treated flow state mud in the storage yard, and selecting matched crops for planting to realize the re-cultivation.
In the further optimization scheme, in S1, the wall protection structure is a wood board, and the thickness of the wood board is 5cm-10cm.
The wall protection structure is selected from wood boards which need to have the degradable capability. The wood board can provide the capability of resisting the lateral soil pressure, and meanwhile, the wood board does not need to be removed after the fluid mud is solidified, so that the labor is saved; because the main component of the wood board is lignocellulose, soil organic matters can be obtained through microbial decomposition in soil, and the soil fertility can also be increased.
According to the further optimization scheme, in S2, the cushion layer is a sandy soil cushion layer, the thickness of the sandy soil cushion layer is 30cm-50cm, the vacuum pipe is embedded in the middle of the sandy soil cushion layer, the water suction pipeline is installed on the vacuum pipe and communicated with the vacuum pipe, one end of the vacuum pipe is communicated with a vacuum pump arranged on the ground through the pipeline, and the pipeline is arranged in soil on one side of the field pile.
The sandy soil cushion layer provides a supporting force for the fluid mud on the upper layer, and meanwhile, the vacuum tubes in the sandy soil cushion layer can be protected from being extruded and deformed.
In the S3, the height of each liter of the fluid mud filled into the storage yard through a pumping pipeline is 20cm, and quicklime, fenton reagent and peanut shells are added into the fluid mud.
In a further optimization scheme, the total mass of the quicklime is 10-30% of the total mass of the fluid mud by dry weight, the quicklime is added in batches along with the height, and the quicklime is stirred by a stirring machine after each addition.
Further optimizing the scheme, before the Fenton reagent is added, a field pilot test is carried out to determine the proportion and the mixing amount of ferrous sulfate and hydrogen peroxide in the Fenton reagent; h 2 O 2 /Fe 2+ Ratio 3/1-5/1, fe 2+ The adding amount is 25-50mg/g of the dry weight of the fluid mud, firstly, ferrous sulfate is prepared into a solution according to the ratio of 1.
According to a further optimized scheme, the particle size of the peanut shells is about 0.5mm, the total mass of the peanut shells is 40% of the dry weight of the fluid mud according to the dry weight of the fluid mud, the peanut shells are added in batches along with the height, and the peanut shells are stirred by a stirring machine after each addition.
And in S7, performing consolidation treatment on the fluid-state mud in the yard by adopting an intermittent vacuum preloading mode, starting the driving device and the pressure applying device for a period of time, stopping when the water yield of the vacuum pump is obviously reduced, standing for 2-3 hours, and restarting the driving device and the pressure applying device.
And when the vacuum gauge of the vacuum pump reaches a preset value, maintaining the vacuumizing process for 15 days, observing that the water yield in the vacuum pipe per unit time is obviously reduced, stopping the operation of the device, standing for 2-3 hours, repeating S7 until no water is discharged from the vacuum pipe, closing the driving device and the pressure device, and stopping the vacuum preloading treatment on the fluid mud.
In a further optimized scheme, the water suction pipeline is a straw rope formed by weaving straws.
In order to realize the aim of the yard re-tillage, the water suction pipeline is composed of straw ropes formed by weaving straws, and the waste straws are subjected to resource utilization. The water suction pipeline can be made of straw, the water permeable filter cloth is wrapped outside the core, and the water suction pipeline can be degraded automatically in the later period, so that the ploughability and the planting ability of the fluid mud are improved, and the rapid re-ploughing of the storage yard is realized.
Referring to fig. 2-4, the device for treating the fluid mud by vacuum preloading is used for implementing the method.
The utility model provides a device of flow state mud is handled in vacuum pre-compaction, including applying clamp plate 12, the transmission of applying clamp plate 12 top is connected with biasing arrangement, the biasing arrangement rigid coupling is subaerial, apply clamp plate 12 lower contact and be provided with apron 13, apron 13 below rigid coupling has the subassembly that vibrates, the one end intercommunication of subassembly that vibrates has intake pipe 20, the other end intercommunication of subassembly that vibrates has outlet duct 21, intake pipe 20 intercommunication has first pneumatic portion, the one end intercommunication of outlet duct 21 has vacuum portion, the other end intercommunication of vacuum portion has the pneumatic portion of second, the inside intercommunication of vacuum portion has communicating pipe 5, communicating pipe 5 intercommunication has the subassembly that draws water, the subassembly that draws water is located apron 13 under.
When the vacuum cofferdam is used, a storage yard is dug in soil 1, the retaining walls 3 are installed on the four walls of the storage yard, the retaining walls 3 are vertically arranged, the retaining walls 3 are preferably wood boards, the thickness of each wood board is 5cm-10cm, sandy soil 2 is paved at the bottom of the storage yard, the thickness of each sandy soil 2 is 30cm-50cm, a pumping component is embedded in the sandy soil 2, one end of the pumping component is communicated with the communicating pipe 5, the communicating pipe 5 penetrates through the retaining wall 3 on one side and reaches the ground surface through the soil 1 to be communicated with a vacuum part, then the pumping component is blown into the storage yard to cover the pumping component, when the height of the pumping component 22 is kept equal to that of the retaining wall 3, the vibrating component is fixedly connected to the upper surface of the fluid mud 22 below the cover plate 13 and is covered on the upper surface of the fluid mud 22, the air outlet pipe 21 and the air inlet pipe 20 can be arranged on the inner side of the cover plate 13, the two ends of the vibrating component are respectively communicated with the air outlet pipe 21 and the air inlet pipe 20, the air inlet pipe 20 is communicated with the first pneumatic part, the air outlet pipe 21 is communicated with the second pneumatic part after the vacuum sealing membrane part is communicated with the vacuum sealing membrane part, the vacuum sealing membrane part is communicated with the vacuum cofferdam, the sealing membrane layer (2-3 is paved on the surface of the cover plate 13), the sealing membrane layer, the sealing ditch, the sealing membrane is excavated environment, the sealing ditch, the sealing position of the vacuum cofferdam is formed in the vacuum cofferdam is further sealed environment, and the vacuum cofferdam is sealed to form a sealing dam is sealed, and the cofferdam is sealed.
And arranging a pressing plate 12 on the cover plate 13, so that the pressing plate 12 is in transmission connection with a pressing device, and starting the first pneumatic part, the second pneumatic part and the pressing device to start vacuum preloading of the fluid mud 22 until the device is arranged.
Drive through biasing means and apply pressure board 12 and produce positive pressure to flow state mud 22, extrude the moisture in flow state mud 22, simultaneously through starting first pneumatic portion and second pneumatic portion, drive vibration subassembly and vacuum portion function, vibration subassembly makes the water analysis in flow state mud 22 through the vibration and goes out, simultaneously under the vacuum portion effect, the inside negative pressure that forms of the subassembly that draws water of flow state mud 22, make the moisture in flow state mud 22 remove to the earth's surface through the subassembly that draws water, finally discharge, the vacuum preloading efficiency of flow state mud 22 has been improved greatly, the drainage rate is improved.
Further optimize the scheme, the subassembly of vibrating includes a plurality of vibrting spears 19, and a plurality of vibrting spears 19 are the matrix distribution in apron 13 bottom, and vibrting spear 19 and apron 13 bottom rigid coupling, the one end and the intake pipe 20 intercommunication of vibrting spear 19, the other end and the outlet duct 21 intercommunication of vibrting spear 19.
Further optimize the scheme, vibrting spear 19 includes casing 1901, casing 1901 top and apron 13 bottom rigid coupling, casing 1901 bottom rigid coupling has pole head 1913, from top to bottom rigid coupling has second baffle 1904 in the casing 1901 in proper order, first baffle 1902 and third baffle 1911, second baffle 1904 and first baffle 1902 enclose into air inlet chamber 1903, first baffle 1902 and third baffle 1911 enclose into air outlet chamber 1914, air inlet chamber 1903 top is passed through second intake pipe 1905 and is linked together with intake pipe 20, air outlet chamber 1914 passes through second outlet duct 1906 and is linked together with outlet duct 21, it is connected with eccentric portion of rotation to rotate between first baffle 1902 and the third baffle 1911.
In a further optimized scheme, the eccentric rotating portion comprises a third air inlet pipe 1907, the top of the third air inlet pipe 1907 is communicated with the air inlet cavity 1903, the third air inlet pipe 1907 is rotatably connected with the middle of the first partition plate 1902, the bottom of the third air inlet pipe 1907 is fixedly connected and communicated with one end of a third air outlet pipe 1908, the third air outlet pipe 1908 is of a structure in the shape of '212748', a plurality of air outlet holes 1909 are formed in the middle of the third air outlet pipe 1908 at equal intervals, a rotating connecting rod 1910 is fixedly connected with the bottom of the third air outlet pipe 1908, the rotating connecting rod 1910 is rotatably connected with the middle of the third partition plate 1911, an eccentric block 1912 is fixedly connected with the bottom of the rotating connecting rod 1910 through the middle of the third partition plate 1911, and the eccentric block 1912 is located between the third partition plate 1911 and the rod head 1913.
The vibrating rod 19 vibrates as the airflow moves. When gas enters through the gas inlet pipe 20, the gas enters the gas inlet cavity 1903 through the second gas inlet pipe 1905, then the gas enters the third gas outlet pipe 1908 through the third gas inlet pipe 1907, and is discharged through a plurality of gas outlet holes 1909 on the surface of the third gas outlet pipe 1908, because the third gas outlet pipe 1908 is of a '212748' structure, the plurality of gas outlet holes 1909 are positioned on one side of the rotating shaft of the third gas outlet pipe 1908, and further when the gas is sprayed out from the plurality of gas outlet holes 1909, the third gas outlet pipe 1908 is driven to rotate in the gas outlet cavity 1914, the rotation generates eccentric play in the middle of the housing 1901, so that the housing 1901 generates vibration, meanwhile, the third gas outlet pipe 1908 rotates to drive the rotating connecting rod 1910 to rotate, the rotating connecting rod 1910 drives the eccentric block 1912 to rotate, so that the bottom of the housing 1901 generates a large degree of swing, and further the vibration amplitude of the bottom of the housing 1901 is higher than that of the middle of the housing 1901, so as to play a role in vibrating on the fluid mud 22, and accelerate the separation of moisture in the fluid mud 22.
When the air flow is sprayed out from the air outlet holes 1909, the air flow is enriched in the air inlet cavity 1903, enters the air outlet pipe 21 through the second air outlet pipe 1906, and then is discharged through the air outlet pipe 21.
According to a further optimized scheme, the water pumping assembly comprises a plurality of water suction pipes 18, the water suction pipes 18 are distributed in a matrix mode, the water suction pipes 18 and the vibrating rods 19 are arranged at intervals, the bottoms of the water suction pipes 18 are communicated with vacuum pipes 4, and one ends of the vacuum pipes 4 are communicated with a vacuum part.
In a further optimized scheme, the water suction pipe 18 comprises a water suction main pipe 1801, a plurality of branch pipe portions are fixedly connected to the water suction main pipe 1801, and the branch pipe portions are arranged at equal intervals along the length direction of the water suction main pipe 1801.
According to a further optimized scheme, the branch pipe portion comprises a plurality of water absorption branch pipes 1802, the water absorption branch pipes 1802 are arranged at equal intervals along the circumferential direction of the water absorption main pipe 1801, and the water absorption branch pipes 1802 are fixedly connected and communicated with the water absorption main pipe 1801.
The water absorption branch pipes 1802 and the water absorption main pipe 1801 are made of straw, degradable water permeable filter cloth (not shown in the figure) is coated outside the water absorption branch pipes 1802 and the water absorption main pipe 1801, the water absorption branch pipes 1802 and the water absorption main pipe 1801 are arranged at an angle of 45 degrees, and the bottoms of the water absorption branch pipes 1802 are fixedly connected with the water absorption main pipe 1801, so that the tops of the water absorption branch pipes 1802 are unfolded.
Set up like this and can increase the effect area that absorbs water, simultaneously because a plurality of branch 1802 that absorb water upwards is the form that expandes, when the moisture that separates out in the flow state mud 22 moves down under the action of gravity, a plurality of branch 1802 that absorb water can be the state of damming, has improved the effect of absorbing water of a plurality of branch 1802 that absorb water.
When the water suction branch pipe 1802 and the water suction main pipe 1801 are in a vacuum negative pressure state, the water content precipitated in the fluid mud 22 moves into the water suction branch pipe 1802 and the water suction main pipe 1801 under the action of the negative pressure, and then moves to the ground surface through the vacuum pipe 4 and the communicating pipe 5 and is discharged.
Further optimize the scheme, first pneumatic portion and second pneumatic portion are malleation roots's fan 17 and negative pressure roots's fan 14 respectively, and malleation roots's fan 17 communicates with intake pipe 20, and negative pressure roots's fan 14 communicates with the vacuum part.
According to a further optimized scheme, the vacuum part comprises a pneumatic motor 15, one end of the pneumatic motor 15 is communicated with the air outlet pipe 21, the other end of the pneumatic motor 15 is communicated with the negative-pressure Roots blower 14, the pneumatic motor 15 is in transmission connection with a vacuum pump 16, and the vacuum pump 16 is communicated with the communicating pipe 5.
One end of the pneumatic motor 15 is communicated with the air outlet pipe 21, the other end of the pneumatic motor 15 is communicated with the negative pressure Roots blower 14, when the positive pressure Roots blower 17 and the negative pressure Roots blower 14 generate high-speed airflow in the pipeline, the airflow drives the pneumatic motor 15 to rotate at high speed, and then the pneumatic motor 15 drives the vacuum pump 16 to operate, the pneumatic motor 15 is preferably an 8AM-ARV-70 type pneumatic motor, the vacuum pump 16 is preferably an RV0300C type Roots vacuum pump, the power source of the RV0300C type Roots vacuum pump is replaced by the pneumatic motor 15 through the motor, the high-speed airflow in the pipeline is fully utilized, and then additional electric power input when the vacuum pump 16 is used is reduced, and further the operation cost is reduced.
Further optimization scheme, pressure device includes first bottom plate 8, the middle part rigid coupling of 8 bottoms of first bottom plate has lifter 9, the flexible end rigid coupling of lifter 9 has articulated pole 23, the both ends of articulated pole 23 are rotated respectively and are connected with two connecting rods 11 that set up alternately, two connecting rod 11 centers are articulated, the tip of connecting rod 11 center and articulated pole 23 rotates and is connected, the both ends of connecting rod 11 articulate respectively has articulated seat 24, articulated seat 24 and the 8 bottom sliding connection of first bottom plate that are located the connecting rod 11 top, articulated seat 24 and the 12 top sliding connection of pressure applying board that are located the connecting rod 11 bottom, 8 top rigid couplings of first bottom plate have support 7, the both ends rigid coupling of support 7 has stand 6, stand 6 and ground rigid coupling.
When the lifting rod 9 stretches, the hinge rod 23 is driven to move up and down, two ends of the hinge rod 23 are respectively and rotatably connected with the two connecting rods 11 which are arranged in a crossed mode, when the hinge rod 23 moves up and down, the hinge seats 24 at two ends of the two connecting rods 11 which are arranged in a crossed mode respectively slide on the first bottom plate 8 which pushes the bottom and the pressing plate 12, the pressing plate 12 is made to move downwards, pressure is generated on the cover plate 13, and then the fluid mud 22 is extruded. The hinged seats 24 at the bottom of the two crossed connecting rods 11 are simultaneously close to each other along the upper side of the pressing plate 12, so that the pressing plate 12 can be kept horizontal and moved downwards during the pressing process, and the applied pressure can be uniformly applied to the fluid mud 22.
The working process of the embodiment is as follows: when the vacuum film pressing cofferdam is used, a storage yard is dug in soil 1, the retaining walls 3 are installed on the four walls of the storage yard, the retaining walls 3 are vertically arranged, sandy soil 2 is paved at the bottom of the storage yard, vacuum tubes 4 are embedded in the sandy soil 2, one ends of the vacuum tubes 4 are communicated with the communicating tubes 5, the communicating tubes 5 penetrate through the retaining walls 3 on one side and reach the ground surface through the soil 1 and are communicated with a vacuum pump 16, the vacuum tubes 4 are fixedly connected and communicated with a plurality of water suction tubes 18, the water suction tubes 18 are distributed in a matrix mode, then fluid mud 22 is blown into the storage yard, the water suction tubes 18 are covered, the fluid mud 22 is kept at the same height as the retaining walls 3, the cover plate 13 and a plurality of vibrating rods 19 fixedly connected below the cover plate 13 are covered on the upper surface of the fluid mud 22, the plurality of water suction tubes 18 are arranged at intervals with the plurality of vibrating rods 19, the air outlet pipe 21 and the air inlet pipe 20 can be arranged inside the cover plate 13, two ends of the vibrating rods 19 are respectively communicated with the air inlet pipe 21 and the air inlet pipe 20, the air inlet pipe 21 is respectively communicated with the positive pressure roots blower 17, the air outlet pipe 21 is communicated with the negative pressure film pressing ditch 14 after the air outlet pipe 21 is communicated with the pneumatic motor 15, the pneumatic motor is communicated with the sealing film pressing ditch, the sealing film is formed in the sealing ditch, the sealing film pressing ditch, the sealing bag 3, the sealing dam is further sealing connection is formed in the sealed environment, and the sealed bag is paved, and the sealed cofferdam is sealed environment, and the sealed bag 5, and the sealed dam is further sealed bag is formed in the sealed environment, and the sealed cofferdam is sealed and the sealed dam is laid in the sealed environment, and the sealed.
And a pressure applying plate 12 is arranged on the cover plate 13, so that the pressure applying plate 12 is in transmission connection with the lifting rod 9, the positive pressure Roots blower 17, the negative pressure Roots blower 14 and the lifting rod 9 are started, and the vacuum preloading of the fluid mud 22 is started.
The hinge rod 23 is driven to move up and down through the extension of the lifting rod 9, when the hinge rod 23 moves up and down, the hinge seats 24 at the two ends of the two cross connecting rods 11 respectively slide on the first bottom plate 8 pushing the bottom and the pressing plate 12, so that the pressing plate 12 moves down, pressure is generated on the cover plate 13, and the fluid mud 22 is extruded. Two hinged seats 24 at the bottom of two connecting rods 11 arranged crosswise are close to each other along the upper part of the pressing plate 12 at the same time, so that the pressing plate 12 can keep horizontal and move downwards in the pressing process, the applied pressure is uniformly acted on the fluid mud 22, the moisture in the fluid mud 22 is squeezed out, meanwhile, by starting the positive pressure Roots blower 17 and the negative pressure Roots blower 14, after the gas enters through the gas inlet pipe 20 under the action of the positive pressure Roots blower 17, the gas enters the gas inlet cavity 1903 through the second gas inlet pipe 1905, then the gas enters the third gas outlet pipe 1908 through the third gas inlet pipe 1907 and is discharged through a plurality of gas outlet holes 1909 on the surface of the third gas outlet pipe 1908, because the third gas outlet pipe 1908 is in a 'probation 212748' structure, several ventholes 1909 are located one side of the rotation axis of third outlet duct 1908, and then when gas is ejected from several ventholes 1909, drive third outlet duct 1908 and rotate in air outlet cavity 1914, this kind of rotation produces eccentric drunkenness in the middle part of casing 1901, make casing 1901 produce the vibration, third outlet duct 1908 rotates simultaneously and drives rotation connecting rod 1910 and rotate, rotation connecting rod 1910 drives eccentric block 1912 and rotates, eccentric block 1912 rotates and makes the bottom of casing 1901 produce the swing of great degree, and then make the vibration range of casing 1901 bottom be higher than the vibration range in the middle part of casing 1901, play the effect of vibrating to fluid mud 22, accelerate the precipitation of moisture in fluid mud 22.
When the air flow is sprayed out from the air outlet holes 1909, the air flow is enriched in the air inlet cavity 1903, enters the air outlet pipe 21 through the second air outlet pipe 1906, and then is discharged through the air outlet pipe 21.
The air flow enters the pneumatic motor 15 through the air outlet pipe 21, the air flow drives the pneumatic motor 15 to rotate at a high speed, the vacuum pump 16 is driven to operate through the pneumatic motor 15, meanwhile, the other end of the pneumatic motor 15 is communicated with the negative pressure Roots blower 14, and the flow rate of the air flow in the pipeline is greatly improved under the combined action of the positive pressure Roots blower 17 and the negative pressure Roots blower 14.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (9)
1. A method for treating fluid mud by vacuum preloading is characterized by comprising the following steps:
s1, excavating a storage yard, and adding a retaining wall structure on four walls of the storage yard;
s2, laying a cushion layer and a vacuum pipe at the bottom of the storage yard, arranging a water suction pipeline to enable the vacuum pipe to be communicated with a vacuum pump, and connecting the vacuum pump with a driving device in a transmission way;
s3, filling the fluid mud into the yard through a pumping pipeline until the whole yard is filled, and adding quicklime, fenton reagent and peanut shells into the fluid mud during filling;
s4, laying a cover plate on the top of the fluid mud, extending a vibrating device into the fluid mud, and connecting the vibrating device with a driving device in a transmission manner;
s5, laying a sealing film on the surface of the cover plate, and laying geotextile on the surface of the field pile after arranging a film pressing ditch and a cofferdam around the field pile;
s6, arranging a pressing plate on the cover plate, wherein the pressing plate is in transmission connection with a pressing device;
s7, starting a driving device to drive a vacuum pump and a vibrating device, and starting a pressure applying device at the same time;
s8, when the water yield of the fluid mud is reduced and the sedimentation is reduced to meet the preset requirement, closing the driving device and the pressing device and dismantling the driving device and the pressing device;
s9, measuring internal elements of the treated in-yard flow state mud, and selecting matched crops for planting.
2. The method for vacuum preloading fluid mud as claimed in claim 1, wherein: in S1, the retaining wall structure is a wood board, and the thickness of the wood board is 5cm-10cm.
3. The method for vacuum preloading fluid mud as recited in claim 1, wherein: in the step S2, the cushion layer is a sandy soil cushion layer, the thickness of the sandy soil cushion layer is 30cm-50cm, the vacuum pipe is buried in the middle of the sandy soil cushion layer, the water suction pipeline is installed on the vacuum pipe and communicated with the vacuum pipe, one end of the vacuum pipe is communicated with the vacuum pump arranged on the ground through a pipeline, and the pipeline is arranged in soil on one side of the field pile.
4. The method for vacuum preloading fluid mud as claimed in claim 1, wherein: and in the S3, the height of each liter of the fluid mud filled into the storage yard through the pumping pipeline is 20cm, and quicklime, fenton reagent and peanut shells are added into the fluid mud.
5. The method for vacuum preloading fluid mud as recited in claim 4, wherein: the total mass of the quicklime is 10-30 percent of the total mass dry weight of the fluid mud, and the quicklime is added in batches along with the height, and is stirred by a stirring machine after each addition.
6. The method for vacuum preloading fluid mud as claimed in claim 4, wherein: before the Fenton reagent is added, a field pilot test is carried out to determine the proportion and the mixing amount of ferrous sulfate and hydrogen peroxide in the Fenton reagent; h 2 O 2 /Fe 2+ Ratio 3/1-5/1, fe 2+ The adding amount is 25-50mg/g (dry weight of the fluid mud), firstly, ferrous sulfate is prepared into a solution according to the proportion of 1.
7. The method for vacuum preloading fluid mud as claimed in claim 4, wherein: the particle size of the peanut shells is about 0.5mm, the total mass of the peanut shells is 40% of the dry weight of the fluid mud according to the dry weight of the fluid mud, the peanut shells are added in batches along with the height, and the peanut shells are stirred by a stirring machine after being added every time.
8. The method for vacuum preloading fluid mud as claimed in claim 1, wherein: and S7, solidifying the fluid mud in the yard by adopting an intermittent vacuum preloading mode, starting the driving device and the pressure applying device, continuing for a period of time, stopping when the water yield of the vacuum pump is obviously reduced, standing for 2-3 hours, and restarting the driving device and the pressure applying device.
9. The method for vacuum preloading fluid mud as claimed in claim 1, wherein: the water suction pipeline is a straw rope formed by weaving straws.
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| CN202211658487.3A CN115947516A (en) | 2022-12-22 | 2022-12-22 | Method for treating fluid mud by vacuum preloading |
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| CN202211658487.3A CN115947516A (en) | 2022-12-22 | 2022-12-22 | Method for treating fluid mud by vacuum preloading |
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