CN113944472A - Muck improvement method - Google Patents
Muck improvement method Download PDFInfo
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- CN113944472A CN113944472A CN202110987362.4A CN202110987362A CN113944472A CN 113944472 A CN113944472 A CN 113944472A CN 202110987362 A CN202110987362 A CN 202110987362A CN 113944472 A CN113944472 A CN 113944472A
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- foaming agent
- bentonite
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- stirring barrel
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 106
- 238000003756 stirring Methods 0.000 claims abstract description 101
- 239000004088 foaming agent Substances 0.000 claims abstract description 71
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 43
- 239000000440 bentonite Substances 0.000 claims abstract description 43
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000002689 soil Substances 0.000 claims abstract description 42
- 239000006260 foam Substances 0.000 claims abstract description 29
- 238000005187 foaming Methods 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims abstract description 8
- 239000000428 dust Substances 0.000 claims description 27
- 238000004140 cleaning Methods 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 15
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000005299 abrasion Methods 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 20
- 230000007547 defect Effects 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000011499 joint compound Substances 0.000 description 6
- 239000002688 soil aggregate Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0678—Adding additives, e.g. chemical compositions, to the slurry or the cuttings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0678—Adding additives, e.g. chemical compositions, to the slurry or the cuttings
- E21D9/0685—Foaming agents
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
- E21D9/087—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The application relates to the technical field of muck improvement, in particular to a muck improvement method, which comprises the following steps: determining the property of the residue soil to be improved, and determining the addition amount and foaming parameters of a foaming agent and the injection amount and the mixing ratio of bentonite according to the property of the residue soil to be improved; adding water into a mixing and stirring barrel based on the addition amount of the foaming agent and foaming parameters, starting a stirring device to stir the solution in the mixing and stirring barrel, introducing the adjusted foaming agent into a foam generator, conveying the adjusted foam book to a cutter head by the foam generator, and mixing the muck and the foaming agent by using a rotary stirring device of the cutter head; based on the injection volume and the mix proportion of bentonite, the viscosity of adjustment bentonite, control bentonite pump will adjust the bentonite carry to the shield structure machine the soil storehouse in, utilize the grinding agitating unit that sets up in the soil storehouse, mix dregs and bentonite, this application has the effect of improving the inefficiency defect of dregs improvement.
Description
Technical Field
The application relates to the technical field of muck improvement, in particular to a muck improvement method.
Background
The improvement of the muck is an indispensable most important technical means for ensuring the safety, smoothness and quickness of the shield construction.
The existing muck improvement method adopts modifiers such as foam, mud and water to improve muck of a cutter head or a soil bin, and can basically meet the muck improvement of a shield machine under weak and single geological conditions. However, in complicated strata such as mudstone, argillaceous siltstone, viscous water loss, uneven hardness and the like, due to the influence of geology and hydrology, under the cutting action of a cutter and the impact action of a cutter head, rock blocks become fragments and powder, so that the muck improvement effect is poor, and meanwhile, muck is easy to generate a mud cake phenomenon under the extrusion condition at high temperature, so that the defect of low muck improvement efficiency exists.
Disclosure of Invention
In order to overcome the defect of low muck improvement efficiency, the application provides a muck improvement method, which adopts the following technical scheme:
a muck improving method comprises the following steps:
s1, determining the property of the slag soil to be improved, and determining the addition amount and foaming parameters of a foaming agent and the injection amount and the mixing proportion of bentonite according to the property of the slag soil to be improved;
s2, controlling the output quantity of a power device based on the addition quantity and the foaming parameters of the foaming agent, guiding the foaming agent into a mixing and stirring barrel from a foaming agent box, arranging a stirring device in the mixing and stirring barrel, adding water into the mixing and stirring barrel, starting the stirring device to stir the solution in the mixing and stirring barrel so as to change the composition proportion and the expansion rate of the foaming agent, guiding the adjusted foaming agent into a foam generator, and adjusting the foaming parameters of the foam by the foam generator;
s3, the foam generator conveys the adjusted foam book to a cutter head, and the residue soil and the foaming agent are mixed by a rotary stirring device of the cutter head;
and S4, adjusting the viscosity of the bentonite based on the injection amount and the mixing proportion of the bentonite, controlling a bentonite pump to convey the adjusted bentonite into a soil bin of the shield machine through an expansive soil system interface, and mixing the slag soil and the bentonite by using a grinding and stirring device arranged in the soil bin.
By adopting the technical scheme, when the muck is improved, firstly, a muck sample is collected, the muck sample is tested, muck test data is collected, the properties of the muck are determined according to the test data, and then the foaming agent and the bentonite are debugged according to the properties of the muck. When debugging the foaming agent, with the foaming agent from the foam incasement leading-in to mixing agitator in, and inject proper amount moisture into mixing agitator, start agitating unit stirs the solution in mixing agitator after that, make foaming agent and moisture fully fuse, the foaming agent after will fusing is leading-in to the foam generator again, the foam generator carries out the foaming parameter to the foaming agent and adjusts, pass through the pipeline with the foaming agent who adjusts again and carry blade disc department, the rotatory agitating unit of blade disc carries out intensive mixing to foaming agent and dregs, thereby change dregs nature, improve the bulk flow nature of dregs. When debugging bentonite, at first carry out the consistency debugging to bentonite to in leading-in the soil storehouse of shield structure machine of bentonite pump with debugging bentonite, the grinding agitating unit in the soil storehouse carries out intensive mixing to bentonite and dregs, in order to increase the quantity of soil aggregate in the dregs, and then reduce dregs unit weight, increase dregs porosity, make the difficult mud cake that produces of dregs, reached the effect that improves the inefficiency defect of dregs improvement.
Optionally, the power device in the step S2 is a foaming agent pump, a feed end of the foaming agent pump is communicated with the foaming agent tank, and a discharge end of the foaming agent pump is communicated with the mixing and stirring barrel.
By adopting the technical scheme, when the foaming agent is introduced into the foaming box, the foaming agent pump is started, the foaming agent pump generates suction force on the foam in the foaming agent box, and meanwhile, the foaming agent pump pours the sucked foaming agent into the mixing and stirring box so as to be convenient for subsequent treatment of the foaming agent.
Optionally, the agitating unit in the step S2 includes the rotation motor, the (mixing) shaft, stirring vane, supporting component and wall cleaning vane, the rotation motor is fixed to be set up and is kept away from ground one side at mixing agitator, the (mixing) shaft is in mixing agitator center pin position department, and the (mixing) shaft keeps away from ground one end and rotates the output shaft one end fixed connection of motor, stirring vane and supporting component all are fixed with the circumference face of (mixing) shaft, supporting component deviates from (mixing) shaft one end and wall cleaning vane vertical one side fixed connection, wall cleaning vane deviates from (mixing) shaft vertical one side and mixing agitator inner wall butt.
Through adopting above-mentioned technical scheme, input the inside back of mixing agitator when the foamant, stir foamant and water through agitating unit to increase the mixing rate of foamant and water, clear up the foamant that covers at mixing agitator inner wall simultaneously, the blade of clearing wall is cleared up the agitator inner wall and is scraped, thereby reduces the condition emergence that the inner wall glues glutinous foamant, has reached the effect that improves the inside difficult clearance defect of mixing agitator.
Optionally, the support assembly comprises a horizontal support rod and an inclined support rod, the horizontal support rod and the inclined support rod are respectively fixedly connected with the circumferential surface of the stirring shaft, and one end of the horizontal support rod, far away from the stirring shaft, and one end of the inclined support rod, far away from the stirring shaft, are fixed at the same position of the wall cleaning blade.
Through adopting above-mentioned technical scheme, horizontal strut forms right angled triangle with slope branch and (mixing) shaft, increases the stability of wall-cleaning blade and grinding blade when rotating for it is more firm, firm to add when clearing up mixing agitator inner wall.
Optionally, a dust cover is arranged at the position of the rotating motor, and the dust cover is fixedly connected with one side, far away from the ground, of the mixing and stirring barrel.
Through adopting above-mentioned technical scheme, when using the operation of rotating the motor, underground dust easily adheres at the rotation motor surface for the rotation efficiency who rotates the motor is low, and being provided with of dust cover helps reducing the dust and falls the condition of rotating the motor, thereby has reached the effect that improves the clean and tidy degree on rotation motor surface.
Optionally, the surface of the dust cover is provided with a heat dissipation hole.
Through adopting above-mentioned technical scheme, when using the rotation motor, the rotation motor easily produces the heat in the use, and the heat stops to be not convenient for giving off in the dust cover, and the setting of louvre helps the heat to give off to the effect of carrying out the heat dissipation to the rotation motor has been reached.
Optionally, a dust screen is fixedly arranged at the opening of the heat dissipation hole.
Through adopting above-mentioned technical scheme, when discharging the heat in the dust cover, being provided with of dust screen helps maintaining the clean and tidy of rotating motor surface, has also reduced the condition emergence of breaking down because of rotating motor surface dust is too much simultaneously.
Optionally, a visible window is formed in the surface of the mixing and stirring barrel, and an observation plate made of transparent materials is fixedly connected to the inner wall of the visible window.
Through adopting above-mentioned technical scheme, at agitating unit stirring in-process, know the inside stirring condition of mixing agitator through visual window, reached the inside effect of monitoring of mixing agitator.
Optionally, an anti-abrasion layer is fixedly arranged on one side of the wall cleaning blade, which is abutted to the inner wall of the mixing and stirring barrel.
Through adopting above-mentioned technical scheme, when the wall-clearing blade cleared up mixing agitator inner wall surface, the wall-clearing blade can produce wearing and tearing because of the butt rotation with mixing agitator internal surface to reduce the life-span of receiving of wall-clearing blade, the setting of wearing-resistant layer helps reducing the direct friction of wall-clearing blade and mixing agitator internal surface, thereby has reached the effect of protection wall-clearing blade.
Optionally, a plurality of pillars are fixedly arranged at the bottom of the mixing and stirring barrel, the pillars are far away from the end connected with the mixing and stirring barrel, the end is connected with a universal wheel in a rotating mode, and a car arrester is fixedly arranged on one side of the upper level of the universal wheel.
Through adopting above-mentioned technical scheme, when mixing agitator off-working condition, can promote mixing agitator idle position under the effect of universal wheel, the car arrester card is in universal wheel one side for universal wheel and ground relatively fixed have reached the effect of practicing thrift the space, have also increased mixing agitator's flexibility simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the muck is improved, firstly, a muck sample is collected, the muck sample is tested, muck test data is collected, the properties of the muck are determined according to the test data, and then the foaming agent and the bentonite are debugged according to the properties of the muck. When debugging the foaming agent, with the foaming agent from the foam incasement leading-in to mixing agitator in, and inject proper amount moisture into mixing agitator, start agitating unit stirs the solution in mixing agitator after that, make foaming agent and moisture fully fuse, the foaming agent after will fusing is leading-in to the foam generator again, the foam generator carries out the foaming parameter to the foaming agent and adjusts, pass through the pipeline with the foaming agent who adjusts again and carry blade disc department, the rotatory agitating unit of blade disc carries out intensive mixing to foaming agent and dregs, thereby change dregs nature, improve the bulk flow nature of dregs. When the bentonite is debugged, firstly, the viscosity of the bentonite is debugged, the debugged bentonite is guided into a soil bin of a shield machine through a bentonite pump, and the bentonite and the muck are fully stirred by a grinding and stirring device in the soil bin so as to increase the number of soil aggregates in the muck, further reduce the volume weight of the muck, increase the porosity of the muck, ensure that the muck is not easy to generate mud cakes, and achieve the effect of improving the defect of low muck improvement efficiency;
2. mix the inside back of agitator when the foamant is input, stir foamant and water through agitating unit to increase the mixing rate of foamant and water, clear up the foamant of gluing the cover at mixing agitator inner wall simultaneously, clear wall blade is cleared up the agitator inner wall, thereby reduces the condition emergence of the sticky foamant of inner wall, has reached the effect that improves the inside difficult clearance defect of mixing agitator.
Drawings
FIG. 1 is a schematic construction flow chart of a method for improving muck in an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a method for improving muck in an embodiment of the present application;
FIG. 3 is an enlarged schematic view of A in FIG. 2;
fig. 4 is a schematic partial structure diagram of a method for improving muck in an embodiment of the present application.
Description of reference numerals: 1. a foaming agent pump; 2. a foaming agent tank; 3. a mixing and stirring barrel; 4. a stirring device; 41. rotating the motor; 42. a stirring shaft; 43. a stirring blade; 44. a support assembly; 441. a horizontal strut; 442. tilting the strut; 45. cleaning the wall of the leaf; 5. a dust cover; 6. heat dissipation holes; 7. a dust screen; 8. a visible window; 9. an observation plate; 10. an anti-wear layer; 11. a pillar; 12. a universal wheel; 13. a car arrester.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a muck improving method, which comprises the following steps of:
s1, collecting a muck sample, testing the muck sample, collecting muck test data, determining the properties of muck according to the test data, and determining the addition amount and foaming parameters of a foaming agent and the injection amount and the mixing ratio of bentonite according to the properties of muck to be improved;
s2, controlling the output quantity of a foaming agent pump 1 based on the addition quantity and foaming parameters of the foaming agent, communicating the feed end of the foaming agent pump 1 with a foaming agent tank 2, communicating the discharge end of the foaming agent pump 1 with a mixing and stirring barrel 3, guiding the foaming agent into the mixing and stirring barrel 3 from the foaming agent tank 2, arranging a stirring device 4 in the mixing and stirring barrel 3, adding water into the mixing and stirring barrel 3, starting the stirring device 4 to stir the solution in the mixing and stirring barrel 3, fully fusing the foaming agent and the water to change the composition proportion and the expansion rate of the foaming solution of the foaming agent, guiding the adjusted foaming agent into a foam generator, and adjusting the foaming parameters of the foam by the foam generator;
s3, the adjusted foam book is conveyed to a cutter head by a foam generator, and the muck and the foaming agent are mixed by using a rotary stirring device 4 of the cutter head, so that the properties of the muck are changed, and the overall fluidity of the muck is improved;
and S4, adjusting the viscosity of the bentonite based on the injection amount and the mixing proportion of the bentonite, controlling a bentonite pump to convey the adjusted bentonite into a soil bin of the shield machine through an expansive soil system interface, and fully stirring the bentonite and the dregs by using a grinding and stirring device 4 in the soil bin to mix the dregs and the bentonite.
The construction method increases the number of soil aggregates in the residue soil, reduces the volume weight of the residue soil, increases the porosity of the residue soil, ensures that the residue soil is not easy to generate mud cakes, and achieves the effect of improving the defect of low residue soil improvement efficiency
Referring to fig. 2 and 4, the stirring device 4 includes a rotating motor 41, a stirring shaft 42, a stirring blade 43, a supporting assembly 44 and a wall cleaning blade 45, the rotating motor 41 is fixedly arranged on the side of the mixing and stirring barrel 3 far from the ground, and the rotating motor 41 is positioned at the central axis of the mixing and stirring barrel 3, the stirring shaft 42 is arranged in the mixing and stirring barrel 3 along the vertical direction, and one end of the stirring shaft 42 far away from the ground is fixedly connected with one end of an output shaft of the rotating motor 41, the stirring blades 43 are fixed on the circumferential surface of the stirring shaft 42 in a threaded shape, the wall cleaning blades 45 are fixedly connected with the supporting component 44 along the vertical direction, and one side of the wall cleaning blade 45 far away from the supporting component 44 is abutted with the inner wall of the mixing and stirring barrel 3, one side of the wall cleaning blade 45 abutted with the inner wall of the mixing and stirring barrel 3 is fixedly provided with an anti-abrasion layer 10, in order to reduce the abrasion of the wall cleaning blade 45, one end of the supporting component 44 far away from the wall cleaning blade 45 is fixedly connected with the circumferential surface of the stirring shaft 42. Mix 3 inside backs when the foamant is input into mixing and stirring bucket, stir foamant and water through agitating unit 4 to increase the mixing rate of foamant and water, clear up the foamant of gluing the 3 inner walls of mixing and stirring bucket simultaneously, clear wall blade 45 is cleared up the agitator inner wall and is scraped, thereby reduces the condition emergence that the inner wall glues glutinous foamant, has reached the effect that improves 3 inside difficult clearance defects of mixing and stirring bucket.
Referring to fig. 4, the supporting assembly 44 includes a horizontal supporting rod 441 and an inclined supporting rod 442, the horizontal supporting rod 441 is fixedly connected to the stirring shaft 42 along the horizontal direction, the inclined supporting rod 442 is disposed in an inclined manner toward the horizontal supporting rod 441, the inclined supporting rod 442 is fixedly connected to the stirring shaft 42, and an end of the horizontal supporting rod 441 away from the wall cleaning blade 45 and an end of the inclined supporting rod 442 away from the wall cleaning blade 45 are fixed at the same position of the stirring shaft 42. The horizontal support rod 441, the inclined support rod 442 and the stirring shaft 42 form a right-angled triangle, so that the stability of the wall cleaning blade 45 and the grinding blade during rotation is improved, and the inner wall of the mixing and stirring barrel 3 is more stable and firm during cleaning.
Referring to fig. 2 and 3, a dust cover 5 is arranged at the position of the rotating motor 41, the dust cover 5 and the mixing and stirring barrel 3 are fixedly connected with one side far away from the ground, a plurality of heat dissipation holes 6 are formed in the surface of the dust cover 5 along the vertical direction, and a dust screen 7 is fixedly arranged at the position of each heat dissipation hole 6. When the rotating motor 41 is used for operation, underground dust is easily adhered to the surface of the rotating motor 41, so that the rotating efficiency of the rotating motor 41 is low, the arrangement of the dust cover 5 is favorable for reducing the condition that the dust falls on the rotating motor 41, the effect of improving the surface cleanliness of the rotating motor 41 is achieved, meanwhile, heat generated by the rotating motor 41 is dissipated from the heat dissipation holes 6, and the effect of dissipating heat of the rotating motor 41 is achieved; when the heat in the dust cover 5 is exhausted, the dust cover 7 is arranged to help maintain the cleanness of the surface of the rotating motor 41, and meanwhile, the occurrence of faults caused by excessive dust on the surface of the rotating motor 41 is reduced.
Referring to fig. 2, a visible window 8 is formed in the surface of the mixing and stirring barrel 3 along the horizontal direction, and an observation plate 9 made of a transparent material is fixedly connected to the inner wall of the visible window 8 along the vertical direction. In the stirring process of the stirring device 4, the stirring condition inside the mixing and stirring barrel 3 is known through the visible window 8, and the effect of monitoring the inside of the mixing and stirring barrel 3 is achieved.
Referring to fig. 2, 3 bottom end angle positions of mixing agitator tank have set firmly pillar 11 along vertical direction, pillar 11 is kept away from self and is connected one end rotation with mixing agitator tank 3 and is connected with universal wheel 12, be located the fixed car arrester 13 that is provided with in 12 top levels one side of universal wheel, when mixing agitator tank 3 off-working condition, can be under the effect of universal wheel 12, promote mixing agitator tank 3 to idle position, car arrester 13 card is in 12 one sides of universal wheel, make universal wheel 12 and ground relatively fixed, the effect in saving space has been reached, the flexibility of mixing agitator tank 3 has also been increased simultaneously.
The implementation principle of the muck improvement method in the embodiment of the application is as follows: when the muck is improved, firstly, a muck sample is collected, the muck sample is tested, muck test data is collected, the properties of the muck are determined according to the test data, and then the foaming agent and the bentonite are debugged according to the properties of the muck. When debugging the foaming agent, leading-in the mixing and stirring bucket 3 in from the foam tank with the foaming agent, and inject proper amount moisture into mixing and stirring bucket 3, start agitating unit 4 and stir the solution in mixing and stirring bucket 3 after that, make foaming agent and moisture fully fuse, the foaming agent after will fusing is leading-in to the foam generator again, the foam generator carries out the foaming parameter to the foaming agent and adjusts, pass through the pipeline with the foaming agent who adjusts again and carry blade disc department, the rotatory agitating unit 4 of blade disc carries out the intensive mixing to foaming agent and dregs, thereby change dregs nature, improve the bulk flow nature of dregs. When debugging bentonite, at first carry out the consistency debugging to bentonite to in leading-in the soil storehouse of shield structure machine of bentonite pump with debugging bentonite, grinding agitating unit 4 in the soil storehouse carries out intensive mixing to bentonite and dregs, in order to increase the quantity of soil aggregate in the dregs, and then reduces dregs volume weight, increase dregs porosity, make the difficult mud cake that produces of dregs.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A method for improving muck is characterized in that: the method comprises the following steps:
s1, determining the property of the slag soil to be improved, and determining the addition amount and foaming parameters of a foaming agent and the injection amount and the mixing proportion of bentonite according to the property of the slag soil to be improved;
s2, controlling the output quantity of a power device based on the addition quantity and the foaming parameters of the foaming agent, guiding the foaming agent into a mixing and stirring barrel from a foaming agent box, arranging a stirring device in the mixing and stirring barrel, adding water into the mixing and stirring barrel, starting the stirring device to stir the solution in the mixing and stirring barrel so as to change the composition proportion and the expansion rate of the foaming agent, guiding the adjusted foaming agent into a foam generator, and adjusting the foaming parameters of the foam by the foam generator;
s3, the foam generator conveys the adjusted foam book to a cutter head, and the residue soil and the foaming agent are mixed by a rotary stirring device of the cutter head;
and S4, adjusting the viscosity of the bentonite based on the injection amount and the mixing proportion of the bentonite, controlling a bentonite pump to convey the adjusted bentonite into a soil bin of the shield machine through an expansive soil system interface, and mixing the slag soil and the bentonite by using a grinding and stirring device arranged in the soil bin.
2. The method for improving slag soil according to claim 1, wherein: the power device in the step S2 is a foaming agent pump (1), the feeding end of the foaming agent pump (1) is communicated with a foaming agent box (2), and the discharging end of the foaming agent pump (1) is communicated with a mixing and stirring barrel (3).
3. The method for improving slag soil according to claim 1, wherein: agitating unit (4) in the S2 step is including rotating motor (41), (mixing) shaft (42), stirring vane (43), supporting component (44) and clear wall blade (45), it keeps away from ground one side to rotate motor (41) fixed the setting at mixing agitator (3), (mixing) shaft (42) are in mixing agitator (3) central axis position department, and ground one end is kept away from in (mixing) shaft (42) and the output shaft one end fixed connection of rotating motor (41), stirring vane (43) and supporting component (44) all are fixed with the circumference face of (mixing) shaft (42), supporting component (44) deviate from (mixing) shaft (42) one end and clear wall blade (45) vertical one side fixed connection, clear wall blade (45) deviate from (mixing) shaft (42) vertical one side and mix agitator (3) inner wall butt.
4. The method for improving slag soil according to claim 3, wherein: the supporting assembly (44) comprises a horizontal supporting rod (441) and an inclined supporting rod (442), the horizontal supporting rod (441) and the inclined supporting rod (442) are fixedly connected with the circumferential surface of the stirring shaft (42) respectively, and one end, far away from the stirring shaft (42), of the horizontal supporting rod (441) and one end, far away from the stirring shaft (42), of the inclined supporting rod (442) are fixed at the same position of the wall cleaning blade (45).
5. The method for improving slag soil according to claim 3, wherein: the rotary motor (41) is provided with a dust cover (5), and the dust cover (5) is fixedly connected with one side, far away from the ground, of the mixing and stirring barrel (3).
6. The method for improving slag soil according to claim 5, wherein: the surface of the dust cover (5) is provided with heat dissipation holes (6).
7. The method for improving slag soil according to claim 6, wherein: and a dust screen (7) is fixedly arranged at the opening of the heat dissipation hole (6).
8. The method for improving slag soil according to claim 1, wherein: the surface of the mixing and stirring barrel (3) is provided with a visible window (8), and the inner wall of the visible window (8) is fixedly connected with an observation plate (9) made of transparent materials.
9. The method for improving slag soil according to claim 3, wherein: and an anti-abrasion layer (10) is fixedly arranged on one side of the wall cleaning blade (45) which is abutted against the inner wall of the mixing and stirring barrel (3).
10. The method for improving slag soil according to claim 4, wherein: the bottom of the mixing and stirring barrel (3) is fixedly provided with a plurality of pillars (11), one end of each pillar (11) far away from the pillar and connected with the mixing and stirring barrel (3) is rotatably connected with a universal wheel (12), and one side of the pillar above the universal wheel (12) in the horizontal direction is fixedly provided with a car arrester (13).
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114634817A (en) * | 2022-01-12 | 2022-06-17 | 北京市首发天人生态景观有限公司 | Soil conditioner, soil improvement method and application thereof |
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| CN105545314A (en) * | 2015-12-24 | 2016-05-04 | 中铁二十二局集团第一工程有限公司 | Construction system and construction method for improving water-enriched sand layer shield waste soil |
| CN106351665A (en) * | 2016-11-07 | 2017-01-25 | 成都建工路桥建设有限公司 | Construction method using slag and soil improvement in soil pressure balance type rectangular shield top tunneling of sand gravel stratum |
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| CN105545314A (en) * | 2015-12-24 | 2016-05-04 | 中铁二十二局集团第一工程有限公司 | Construction system and construction method for improving water-enriched sand layer shield waste soil |
| CN106351665A (en) * | 2016-11-07 | 2017-01-25 | 成都建工路桥建设有限公司 | Construction method using slag and soil improvement in soil pressure balance type rectangular shield top tunneling of sand gravel stratum |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114634817A (en) * | 2022-01-12 | 2022-06-17 | 北京市首发天人生态景观有限公司 | Soil conditioner, soil improvement method and application thereof |
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