CN111455974B - Vacuum preloading flocculation drainage method for transverse drainage plate combined geotextile - Google Patents
Vacuum preloading flocculation drainage method for transverse drainage plate combined geotextile Download PDFInfo
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- CN111455974B CN111455974B CN202010142164.3A CN202010142164A CN111455974B CN 111455974 B CN111455974 B CN 111455974B CN 202010142164 A CN202010142164 A CN 202010142164A CN 111455974 B CN111455974 B CN 111455974B
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- 239000004746 geotextile Substances 0.000 title claims abstract description 113
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005189 flocculation Methods 0.000 title claims abstract description 11
- 230000016615 flocculation Effects 0.000 title claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000008394 flocculating agent Substances 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000002689 soil Substances 0.000 claims description 15
- 238000009958 sewing Methods 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000002105 tongue Anatomy 0.000 claims 6
- 238000005086 pumping Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 101150054854 POU1F1 gene Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
- Sewage (AREA)
Abstract
The invention discloses a vacuum preloading flocculation drainage method for a transverse drainage plate combined geotextile, which comprises the following steps: a. excavating a mud pit; b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit, and drainage connecting ends are sequentially distributed along the height direction; c. prefabricating a geotextile drainage combination provided with a transverse drainage plate: d. pouring the slurry into a slurry pool and preparing a flocculating agent; e. pouring the sludge into a sludge tank, paving a geotextile drainage combination on the upper surface of the sludge layer after each layer is poured, and connecting the transverse slope drainage plate with the corresponding drainage connecting end by adopting a transverse branch pipe; f. respectively connecting the left vertical main pipe and the right vertical main pipe with a vacuumizing device, and covering a sealing film and geotechnical cloth; g. and starting a vacuumizing device to discharge water in the sludge. The method has higher drainage efficiency, cleaner recovered water and can protect and recover the transverse drainage plate for reuse.
Description
Technical Field
The invention relates to a vacuum preloading flocculation drainage method for a transverse drainage plate combined geotextile.
Background
When the traditional vertical drainage plate adopts a vacuum preloading method to drain and reinforce sludge with high water content, the treatment effect on the bottom soil body is not good and the overall reinforcing effect is not uniform due to the attenuation of the vacuum degree along the depth direction of the vertical drainage plate. The vertical drainage plate is greatly bent along with the settlement of a soil body, so that the effective drainage area of the vertical drainage plate is reduced, fine particles are easy to block pores of the filter membrane along with the migration of drainage to cause clogging of the drainage plate, and the fine particles are continuously gathered near the surface drainage plate to form a soil column with poor permeability, so that the overall drainage rate is seriously slowed down.
And traditional vacuum preloading drainage, no matter adopt horizontal drain bar or vertical drain bar, the drainage scope that can effectively cover all is extremely limited, and drainage efficiency is relatively poor.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a vacuum preloading flocculation drainage method for a transverse drainage plate combined geotextile, which has the advantages of higher drainage efficiency, cleaner drained water and capability of recycling the transverse drainage plate after drainage.
Therefore, the invention provides a vacuum preloading flocculation drainage method of a transverse drainage plate combined geotextile, which comprises the following steps:
a. excavating a mud pit;
b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit, and drainage connecting ends are sequentially distributed on the left vertical main pipe and the right vertical main pipe along the height direction;
c. prefabricating a geotextile drainage combination provided with a transverse drainage plate: the geotextile drainage combination comprises a large upper geotextile, a transverse drainage plate and a lower geotextile, wherein the transverse drainage plate is fixed between the upper geotextile and the lower geotextile, a containing cavity for containing the transverse drainage plate is sewn between the lower geotextile and the upper geotextile, and the transverse drainage plate is positioned in the containing cavity;
d. pouring the slurry into a slurry pool, and preparing a flocculating agent to mix with the slurry;
e. pouring the sludge into a mud pit, laying the geotextile drainage combination on the upper surface of the sludge layer after each layer of sludge is poured, connecting the transverse slope drainage plate with the corresponding drainage connecting end by adopting a transverse branch pipe, repeatedly pouring the slurry and laying the geotextile drainage combination until the whole mud pit is filled;
f. respectively connecting the left vertical main pipe and the right vertical main pipe with the vacuumizing device, and covering a sealing membrane and geotextile above the sludge layer;
g. and starting a vacuumizing device to discharge water in the sludge.
Further, the flocculating agent in the step d comprises hydrated lime, 0.8 g of flocculating agent is used in each cubic centimeter of dry soil, and the water-cement ratio is as follows: 5:1.
Furthermore, in the step C, the lower geotextile is cut into strips according to the size of the transverse drainage plate, and each lower geotextile is used for sewing and fixing one transverse drainage plate on the upper geotextile.
Furthermore, in the step C, the upper geotextile and the lower geotextile are large geotextiles with the same size, the transverse drainage plate is punctured and bound by steel wires and fixed on the upper geotextile and/or the lower geotextile, and the edges of the upper geotextile and the lower geotextile are sewn by a handheld bag sewing machine.
Further, in the step C: the utility model discloses a vacuum pumping device, including horizontal drain bar, cross joint, middle drain pipe, horizontal drain bar middle part disconnection, horizontal drain bar disposes the cross joint, and the cross joint sets up and is used for connecting a pair of drain bar link and the drain pipe link that the middle drain pipe was just used for to connect the drain bar including the symmetry setting, the drain bar link of cross joint with the both ends at horizontal drain bar disconnection position are connected, the drain pipe link of cross joint with middle drain pipe connection, middle drain pipe are in proper order transversely to the middle disconnection position connection of drain bar of whole row, and middle drain pipe is from geotechnological cloth side opening part outer joint middle house steward, and middle house steward connects vacuum pumping device.
Furthermore, in the step C, the transverse drainage plate is arranged on a transverse drainage frame, the transverse drainage frame is integrally formed by the transverse drainage plate and the plastic connecting band, a plurality of pairs of fastening holes are distributed on the transverse drainage frame, a clamping tongue is arranged in each fastening hole, the clamping tongue is provided with a clamping tongue inclined surface from top to bottom, each pair of fastening holes is provided with a U-shaped fastener, the end part of each U-shaped fastener is provided with a fastening head matched with the fastening hole and the clamping tongue, and the fastening head is provided with a fastening head inclined surface matched with the clamping tongue inclined surface; the upper geotextile and the lower geotextile are large geotextiles with the same size, the transverse drainage frame is arranged between the upper geotextile and the lower geotextile, and the fastening joint of the U-shaped fastener penetrates through the geotextile and is clamped into the fastening hole and is clamped on the clamping tongue.
In step d, the mud pit is provided with a mud delivery pump, a mud delivery pipe, a flocculant delivery pump and a flocculant delivery pipe, and the mud delivery pump and the flocculant delivery pump deliver the mud at a limited flow rate.
The invention has the technical effects that:
1. the drainage efficiency is higher: the horizontal drainage plate can extend the range of water pumping and drainage to a greater extent by depending on the upper geotextile and the lower geotextile. The principle is as follows: the geotextile is a water-permeable geosynthetic material formed by needling or weaving synthetic fibers, so that the geotextile has good water-guiding performance. After the vacuumizing device is started, the vacuum degree in the transverse drainage plate can be further transferred to the whole layer of geotextile through the fiber pore passage of the geotextile, so that the whole geotextile can participate in drainage, the drainage area is greatly increased, and the drainage efficiency is higher.
2. The water drained by pumping is cleaner, namely the soil particle retention rate is higher: because of the drain bar is set up in last geotechnological cloth and between the geotechnological cloth down, during moisture can permeate geotechnological cloth and enter into horizontal drain bar, its drainage direction was for following the vertical row of silt to geotechnological cloth earlier, by the vertical and (or) radial row of geotechnological cloth to horizontal drain bar again. The geotextile is adopted to greatly increase the drainage area and the filtering area, most of soil particles are firstly filtered in a geotextile fiber pore passage in the vertical direction by the geotextile filtering system, and the soil particles in the fiber pore passage and the geotextile form a soil-cloth filtering system in the transverse direction. The filtering effect of the whole system is better, so that the discharged water is cleaner, the clogging of the drainage plate is effectively relieved, and the drainage efficiency is further improved.
3. More environment-friendly: the drainage plate is protected between the upper geotextile and the lower geotextile and is not easy to be damaged and silted up, so that the drainage plate can be taken out after a dried soil body is dug out and can be recycled, the geotextile left in the soil body is generally made of fibers of natural objects, can be decomposed in the soil body, and is more beneficial to environmental protection and saves the consumption of the drainage plate.
4. The use of a flocculating agent is reduced: compared with the prior art that the flocculant is used in an amount of 0.8 g per cubic centimeter of dry soil, the flocculant is obviously reduced, which is beneficial to reducing the pollution of soil bodies.
Drawings
Fig. 1 is a schematic structural diagram of a vacuum preloading system used in a transverse drainage plate combined geotextile vacuum preloading flocculation drainage method provided by the invention.
Fig. 2 is a schematic structural plan view of a drainage plate assembly provided in embodiment 1 of the present invention.
Fig. 3 is a schematic cross-sectional view of the structure of fig. 2.
Fig. 4 is a schematic structural plan view of a drainage plate assembly provided in embodiment 3 of the present invention.
Fig. 5 is a schematic cross-sectional view of the structure of fig. 4.
Fig. 6 is a schematic structural plan view of the lateral drainage frame of fig. 5.
Fig. 7 is a schematic structural view of a U-shaped fastener passing through a geotextile and fastening a fastening hole on a transverse drainage frame.
Fig. 8 is a detailed structural diagram of a vacuum preloading system used in the method for draining water by combining the transverse drainage plate and the geotextile through vacuum preloading and flocculation.
Fig. 9 is a schematic structural view of the middle cross joint in fig. 8.
Detailed Description
The present invention will be described in further detail with reference to the following examples, which are provided for illustration only and are not intended to limit the invention.
Referring to fig. 1, 2, 3 and 8, a transverse drainage plate combined geotextile vacuum preloading flocculation drainage method provided by embodiment 1 of the invention comprises the following steps:
a. excavating a mud pit 1;
b. a left vertical header pipe 2 and a right vertical header pipe 3 are respectively vertically arranged on the left side wall and the right side wall of the mud pit 1, and drainage connecting ends are sequentially distributed on the left vertical header pipe 2 and the right vertical header pipe 3 along the height direction;
c. prefabricating a geotextile drainage combination provided with a transverse drainage plate 4: the geotextile drainage combination comprises a large piece of upper geotextile 5, a transverse drainage plate 4 and a lower geotextile 6, wherein the transverse drainage plate 4 is fixed between the upper geotextile 5 and the lower geotextile 6, a containing cavity for containing the transverse drainage plate is sewn between the lower geotextile 6 and the upper geotextile 5, and the transverse drainage plate 4 is positioned in the containing cavity; the lower geotextile 6 is cut into strips according to the size of the transverse drainage plates 4, and each lower geotextile 6 sews and fixes one transverse drainage plate 4 on the upper geotextile 5;
d. pouring the slurry into a slurry pool 1, and preparing a flocculating agent to mix with the slurry; the flocculant comprises hydrated lime or a flocculant comprising hydrated lime and ferric chloride may be formulated using 0.8 grams per cubic centimeter of dry soil, at a water to cement ratio of: 5: 1; the mud pit is provided with a mud delivery pump, a mud delivery pipe, a flocculant delivery pump and a flocculant delivery pipe, and the mud delivery pump and the flocculant delivery pump are delivered at a limited flow rate.
Pouring the sludge into a mud pit, laying the geotextile drainage combination on the upper surface of the sludge layer after each layer of sludge is poured, connecting the transverse slope drainage plate 4 with the corresponding drainage connecting end by adopting a transverse branch pipe, repeatedly pouring the slurry and laying the geotextile drainage combination until the whole mud pit is filled;
f. the left vertical main pipe 2 and the right vertical main pipe 3 are respectively connected with the vacuumizing device, and a sealing membrane and geotextile are covered above the sludge layer;
g. and starting a vacuumizing device to discharge water in the sludge.
Referring to fig. 1, 2, 3, 8, and 9, in order to further enhance the pumping efficiency, a pumping path can be added under the condition of a large geotextile area, and the specific structure is as follows: in the step C: horizontal drain bar 4 middle part disconnection, horizontal drain bar 4 dispose cross joint 12, and cross joint 12 sets up and is used for connecting a pair of drain bar link 13 of drain bar 4 and symmetry setting and is used for connecting middle drain pipe 14's drain pipe link 15 including the symmetry, the drain bar link of cross joint with the both ends at horizontal drain bar disconnection position are connected, cross joint 12's drain pipe link 15 with middle drain pipe 14 is connected, and middle drain pipe 14 transversely is connected the middle disconnection position of whole row horizontal drain bar 4 in proper order, and middle drain pipe 14 is from geotextile side opening part outer main pipe 16 in the middle of connecting, and middle main pipe 16 connects evacuating device.
Referring to fig. 1, 2, 3 and 8, embodiment 2 of the present invention is basically the same as embodiment 1, and the differences are only: in the step C, the upper geotextile 5 and the lower geotextile 6 are large geotextiles with the same size, the transverse drainage plate 4 is punctured and bound and fixed on the upper geotextile 5 and/or the lower geotextile 6 by adopting a steel wire, and the edges of the upper geotextile 5 and the lower geotextile 6 are sewn by adopting a handheld bag sewing machine. The advantage of this embodiment lies in making up of geotechnological cloth convenient relatively, and the main reason lies in the position of making up all at the border of geotechnological cloth to horizontal drain bar 4 is bound to be fixed on geotechnological cloth.
Referring to fig. 1, 4, 5, 6, 7 and 8, embodiment 3 of the present invention is substantially the same as embodiment 1 except that: in the step C, the transverse drainage plate 4 is arranged on a transverse drainage frame, the transverse drainage frame is integrally formed by the transverse drainage plate 4 and a plastic connecting belt 7, a plurality of pairs of buckling holes 8 are distributed on the transverse drainage frame, a clamping tongue 9 is arranged in each buckling hole 8, the clamping tongue 9 is provided with a clamping tongue inclined plane from top to bottom, each pair of buckling holes 8 is provided with a U-shaped fastener 10, the end part of each U-shaped fastener 10 is provided with a buckling head 11 matched with the buckling hole 8 and the clamping tongue 9, and the buckling head 11 is provided with a buckling head inclined plane matched with the clamping tongue 9 inclined plane; the upper geotextile 5 and the lower geotextile 6 are large geotextiles with the same size, the transverse drainage frame is arranged between the upper geotextile 5 and the lower geotextile 6, and the fastening head 11 of the U-shaped fastener 10 penetrates through the geotextile (both the upper geotextile 5 and the lower geotextile 6) and is clamped into the fastening hole 8 and the clamping tongue 9. The advantage of this embodiment lies in that horizontal drain bar 4 forms wholly through plastic connecting band 7, reduces the fixed work load that brings of drain bar ligature, can keep the form of horizontal drain bar 4 in the soil body moreover better, makes its form can not seriously collapse and warp, is favorable to promoting the drainage efficiency of whole in-process.
Claims (2)
1. A horizontal drain bar combination geotechnical cloth vacuum preloading flocculation drainage method, its characteristic is: the method comprises the following steps:
a. excavating a mud pit;
b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit, and drainage connecting ends are sequentially distributed on the left vertical main pipe and the right vertical main pipe along the height direction;
c. prefabricating a geotextile drainage combination provided with a transverse drainage plate: the geotextile drainage combination comprises a large upper geotextile, a transverse drainage plate and a lower geotextile, wherein the transverse drainage plate is fixed between the upper geotextile and the lower geotextile, a containing cavity for containing the transverse drainage plate is sewn between the lower geotextile and the upper geotextile, and the transverse drainage plate is positioned in the containing cavity; the middle of the transverse drainage plate is disconnected, the transverse drainage plate is provided with a cross joint, the cross joint comprises a pair of drainage plate connecting ends which are symmetrically arranged and are used for connecting the drainage plate and drainage pipe connecting ends which are symmetrically arranged and are used for connecting a middle drainage pipe, the drainage plate connecting ends of the cross joint are connected with two ends of the disconnected part of the transverse drainage plate, the drainage pipe connecting ends of the cross joint are connected with the middle drainage pipe, the middle drainage pipe sequentially and transversely connects the middle disconnected part of the whole row of transverse drainage plates, the middle drainage pipe is outwards connected with a middle main pipe from an opening on the side surface of the geotextile, and the middle main pipe is connected with a vacuumizing device; the transverse drainage plate is arranged on a transverse drainage frame, the transverse drainage frame is integrally formed by the transverse drainage plate and a plastic connecting band, a plurality of pairs of buckling holes are distributed on the transverse drainage frame, clamping tongues are arranged in the buckling holes, each clamping tongue is provided with a clamping tongue inclined plane from top to bottom, each pair of buckling holes is provided with a U-shaped fastener, the end parts of the U-shaped fasteners are provided with buckling joints matched with the buckling holes and the clamping tongues, and the buckling joints are provided with buckling joint inclined planes matched with the clamping tongue inclined planes; the upper geotextile and the lower geotextile are large geotextiles with the same size, the transverse drainage frame is arranged between the upper geotextile and the lower geotextile, and the fastening joint of the U-shaped fastener penetrates through the geotextile and is clamped into the fastening hole and is clamped on the clamping tongue; the lower geotextile is cut into strips according to the size of the transverse drainage plate, and each lower geotextile is used for sewing and fixing one transverse drainage plate on the upper geotextile; the upper geotextile and the lower geotextile are large geotextiles with the same size, the transverse drainage plate is punctured and bound by steel wires and fixed on the upper geotextile and/or the lower geotextile, and the edges of the upper geotextile and the lower geotextile are sewn by a handheld bag sewing machine
d. Pouring the slurry into a slurry pool, and preparing a flocculating agent to mix with the slurry; the flocculating agent comprises hydrated lime, 0.8 g flocculating agent is used in each cubic centimeter of dry soil, and the water-cement ratio is as follows: 5: 1;
e. pouring the sludge into a mud pit, laying the geotextile drainage combination on the upper surface of the sludge layer after each layer of sludge is poured, connecting the transverse drainage plate with the corresponding drainage connecting end by adopting a transverse branch pipe, repeatedly pouring the slurry and laying the geotextile drainage combination until the whole mud pit is filled;
f. respectively connecting the left vertical main pipe and the right vertical main pipe with the vacuumizing device, and covering a sealing membrane and geotextile above the sludge layer;
g. and starting a vacuumizing device to discharge water in the sludge.
2. The transverse drainage plate combined geotextile vacuum preloading flocculation drainage method as claimed in claim 1, which is characterized in that: in the step d, the mud pit is provided with a mud delivery pump, a mud delivery pipe, a flocculant delivery pump and a flocculant delivery pipe, and the mud delivery pump and the flocculant delivery pump deliver the mud at a limited flow rate.
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| CN112323759A (en) * | 2020-09-21 | 2021-02-05 | 温州大学 | Flocculation-horizontal drainage plate vacuum preloading combined multilayer sealing geotextile bag sludge treatment technology and sludge rapid treatment method |
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| CN109267562A (en) * | 2018-08-16 | 2019-01-25 | 温州大学 | The system and method that combined vacuum precompressed of flocculating handles reclaimed ground |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4058550B2 (en) * | 1997-08-22 | 2008-03-12 | 丸山工業株式会社 | Improvement method for soft ground |
| KR100348515B1 (en) * | 1999-10-22 | 2002-08-10 | (주)대우건설 | Engineering methods to improve subsurface of soft ground |
| KR100655383B1 (en) * | 2004-05-28 | 2006-12-08 | 엄기형 | Method of drain construction for basement |
| KR100616123B1 (en) * | 2005-06-24 | 2006-08-28 | 드레인시스템개발 주식회사 | Device for drain underground water and method for construction the same |
| CN204491575U (en) * | 2015-01-26 | 2015-07-22 | 刘春原 | Fast vacuum dewatering installation under high-fill roadbed |
| CN205024666U (en) * | 2015-08-18 | 2016-02-10 | 盐城市涌泉排水板有限公司 | Connecting elements of plastics drain bar |
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|---|---|---|---|---|
| CN202644516U (en) * | 2012-07-06 | 2013-01-02 | 中港基业（北京）岩土技术有限公司 | Vacuum cross drainage connector device |
| CN104264697A (en) * | 2014-10-21 | 2015-01-07 | 宏大国源（芜湖）资源环境治理有限公司 | Greening protective structure for high and steep rocky slope |
| CN109267562A (en) * | 2018-08-16 | 2019-01-25 | 温州大学 | The system and method that combined vacuum precompressed of flocculating handles reclaimed ground |
| CN110845109A (en) * | 2019-10-18 | 2020-02-28 | 王军 | Sludge treatment system adopting horizontal drainage plate and geotextile vacuum preloading method and construction method thereof |
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Application publication date: 20200728 Assignee: ZHEJIANG ZHONGWEI CONSTRUCTION ENGINEERING DESIGN Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2022330000815 Denomination of invention: A Flocculation Drainage Method by Vacuum Preloading of Geotextile Composite with Transverse Drain Board Granted publication date: 20220520 License type: Common License Record date: 20221222 |
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Application publication date: 20200728 Assignee: Zhejiang Yidong Engineering Technology Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2024330000118 Denomination of invention: A method of vacuum preloading and flocculation drainage using a combination of horizontal drainage boards and geotextiles Granted publication date: 20220520 License type: Common License Record date: 20240614 |