CN104110024A - Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay - Google Patents
Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay Download PDFInfo
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- CN104110024A CN104110024A CN201310134647.9A CN201310134647A CN104110024A CN 104110024 A CN104110024 A CN 104110024A CN 201310134647 A CN201310134647 A CN 201310134647A CN 104110024 A CN104110024 A CN 104110024A
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Abstract
A method of consolidating drainage for a reinforcement treatment of a hydraulic fill soft clay comprising: dividing an operation area of a construction foundation pit; erecting a drainage curtain wall and a water collecting well at the edge of the operation area; filling soft clay into the operation area; a horizontally laid flexible drainage plate; then blowing and filling the soft clay and the laid flexible drainage plate until the height is specified; arranging a sand cushion layer on the top of the drainage curtain wall, burying a vacuum pipe network, connecting a vacuum jet pump, and then laying a sealing film for sealing; and finally starting a vacuum jet pump to vacuumize until the specified end condition is ended. The invention utilizes the characteristics of gradually raising layered hydraulic-filled soft clay and arranging horizontal drainage plates in layers, utilizes the self-weight stress of hydraulic-filled soft soil to drain water, greatly reduces energy consumption, ensures that the construction period also becomes an effective drainage period, accelerates the formation of soil body structure, shortens the overall construction period, saves a large amount of materials, can prevent the formation of a shallow layer and a compact layer around the drainage plates, ensures good soil body structure and improves the drainage capability of the soil body.
Description
Technical field
The present invention relates to a kind of method of clay being carried out to consolidation process, particularly a kind of selfweight stress and negative pressure of vacuum utilized is as the discharging consolidation method for hydraulic-filled soft clay consolidation process of accelerating drainage power.
Background technology
Discharging consolidation processing mode to saturated dredger soft soil in prior art, generally comprises with plastic draining board as vertical drainage passage, top filler preloading and applies vacuum as the power of draining.Que sand ground district, has invented without the in line piling prepressing discharging consolidation method of sand bedding course vacuum for saturated dredger soft soil, comparatively popular at present.These methods, through the application practice of decades, have had many improvement at aspects such as technique, equipment, materials.Preloading is mainly to utilize extra load that over top applies to drive the discharging consolidation of the soil body, make top banket subsidiary stress in the super quiet pore pressure of ground generation, the negative pressure that vacuum preloading utilizes vacuum equipment to produce causes draining, by vertical drainage body draining, both have both at the same time negative pressure of vacuum combined stack-load.Saturated dredger soft soil under negative pressure of vacuum or preloading synergy, in processing layer foundation soil water along substantially horizontal direction to water discharging body, move, then extract vertically upward ground out through band drain, thereby reduced the water content in foundation soil, improve the consolidation strength of ground.
But, when above-mentioned traditional discharging consolidation processing mode is reinvented the hydraulic fill foundation of class bury for hydraulic reclamation high-moisture percentage (> 80%), high-ductility index (> 20), due to its structural poor, feature such as clay content is high, moisture content is high, compressibilty is high, intensity is low, permeability is low, be difficult to carry out preloading, vacuum preloading also exists discharging consolidation effect barely satisfactory, processing time is very long, and low etc. the problem of very inhomogeneous, foundation strength reliability.Therefore, when reinvented the hydraulic fill foundation of class bury with this type of, generally first barged-in fill airing even several years of half a year are carried out to treatment effect better.In addition, according to the practice situation of engineering, recently hydraulic reclamation class bury is being carried out in line vacuum load process, through being everlasting native top layer and form compacted zone and the earth pillar protuberance of 20～30cm thickness around band drain, cause draining to cut off, it is more difficult that outside compacted zone, draining and vacuum are transmitted the compared with normal soil body, and its result reality has only been reinforced the sub-fraction foundation soil centered by band drain, and other parts do not obtain consolidation effect substantially.Due to being vacuumized, high-moisture weak soil concentrates on surface layer or band drain top simultaneously, foundation deformation causes band drain bending distortion, band drain periphery to form compacted zone obstruct, full more water body etc., cause vacuum under the degree of depth and band drain periphery transmission effect very poor, the earth pillar forming due to band drain periphery again intercepts, shallow-layer 1m following and centered by band drain radius 20cm soil body treatment effect be in the past difficult to arrive theoretical effect, consume energy high, efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is to overcome existing defect in above-mentioned prior art, and a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process is provided.
The present invention has adopted following technical proposal to solve its technical problem: a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process, is characterized in that comprising the steps:
(1) to construction foundation pit carry out the division of operating area, the both sides width≤125m of every operating area;
(2) at the side, edge of operating area successively building is erect from bottom to top draining curtain wall and collecting well, the height that this draining curtain wall and collecting well are every layer is the above 0.5～1m of every layer of hydraulic reclamation face, this collecting well and draining curtain wall are connected, installing submersible pump in collecting well, and outlet pipe is drawn;
(3) to hydraulic reclamation soft clay in operating area, hydraulic reclamation THICKNESS CONTROL is in 0.8～1.5m;
(4) the flexible water drainage plate that on the hydraulic reclamation soft clay layer in reaching the operating area of thickness, level is laid, these flexible water drainage plate two ends are inserted in draining curtain wall and are connected with draining curtain wall;
(5) repeat (2) (3) (4) step, until hydraulic reclamation soft clay is to specifying elevation, then shallow skin soil layer or the blowing-filling sludge of preloading 0.4～0.45m on last layer flexible water drainage plate, wherein, after hydraulic reclamation soft clay layer 2m, submersible pump can be opened and draw water;
(6) after hydraulic reclamation completes, at draining curtain wall top, sand cushion is set, in this sand cushion, buries vacuum pipe network underground, and connect vacuum jet pump, then lay sealing film sealing;
(7) check that draining curtain wall and collecting well are without after leaking, unlatching vacuum jet pump vacuumizes, to specifying termination condition to stop.
In the present invention and prior art with plastic draining board as vertical drainage passage, top filler preloading and apply vacuum as saturated dredger soft soil is carried out to discharging consolidation processing mode the comparing of drainage power, has outstanding technique effect:
1, the present invention utilizes layering hydraulic reclamation soft clay lifting step by step, and the feature of layered arrangement horizontal draining board, while constructing, utilize the selfweight stress of saturated dredger soft soil to carry out draining, greatly reduce energy consumption, construction period also becomes effective drainage period that ground is processed, accelerated the formation of Soil Body, more traditional overall duration is short;
2, needn't diaphragm seal and drainage blanket be set on top layer, full operating area, only draining curtain wall need be set in operating area, the sand cushion that the fine sand of use or the about whole district of grit material face cover 20% in, can save lot of materials and construction period;
3, only above draining curtain wall, arrange that SLD and enforcement vacuumize, vacuumize region very little, be beneficial to management and control, energy consumption is low;
4, without professional equipment, lay band drain, only use artificial just can lay;
5, between drainage period, band drain is with foundation settlement, can effectively prevent the unfavorable variation that tradition vertically sets that band drain bends after foundation settlement, well hinders the band drain performance degradations such as rising, while having avoided vertical drainage plate to set, smear effect, further ensure the performance of band drain;
6, utilize the deadweight draining of saturated dredger soft soil, can prevent that shallow-layer and band drain compacted zone around from forming, guarantee that Soil Body is good, improve soil body drainability;
7, because the thicker deadweight of soil layer is larger, drainage power is just larger, and drainage effect is more obvious, can solve the undesirable problem of conventional vacuum method deep soil treatment effect;
8, in relatively traditional vertical drainage plate method ground without reinforcement effect, band drain horizontal positioned in the present invention, fill stratum has been played to good reinforced action, can effectively improve the bearing capacity of the soil body, cause is with the sedimentation of ground basic horizontal, without bending, change in theory, as need after-treatment, without again setting band drain;
9, can accelerate the method flexible combination of drainings with existing other, as can be at top combination loading etc.
Accompanying drawing explanation
Fig. 1 is the structural representation of operating area of the present invention.
Fig. 2 is the top plan view of operating area of the present invention.
Fig. 3 is the perspective view of operating area of the present invention.
Fig. 4 is operating area of the present invention partial sectional view.
Fig. 5 is the stereochemical structure sectional drawing of another embodiment of the present invention operating area.
In figure, each sequence number is expressed as:
1-flexible water drainage plate; 2-draining curtain wall; 3-collecting well; 4-vacuum jet pump; 5-soft clay; 6-shallow skin soil layer; 7-sand cushion; 8-vacuum pipe network; 9-sealing film.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it is that main ground carries out discharging consolidation processing that the present invention is applicable to the remoldability ultra-soft soil (soft clay of moisture content > 80%, index of plasticity > 20) of take hydraulic reclamation recently or banket, and it mainly comprises the steps:
(1) to construction foundation pit carry out the division of operating area, the both sides width≤125m of every operating area;
(2) at the side, edge of operating area successively building is erect from bottom to top draining curtain wall 2 and collecting well 3, this draining curtain wall 2 and collecting well 3 height of every layer are the above 0.5～1m of every layer of hydraulic reclamation face, this collecting well 3 is connected with draining curtain wall 2, and the interior installing submersible pump of collecting well 3 is also drawn outlet pipe (not shown in FIG.);
(3) to hydraulic reclamation soft clay 5 in operating area, hydraulic reclamation THICKNESS CONTROL is in 0.8～1.5m;
(4) the flexible water drainage plate 1 that on the hydraulic reclamation soft clay layer in reaching the operating area of thickness, level is laid, these flexible water drainage plate 1 two ends are inserted in draining curtain wall 2 and are connected with draining curtain wall 2;
(5) repeat (2) (3) (4) step, until hydraulic reclamation soft clay 5 is to specifying elevation, then shallow skin soil layer 6 or the blowing-filling sludge of preloading 0.4～0.45m on last layer flexible water drainage plate 1, wherein, after hydraulic reclamation soft clay layer 2m, submersible pump can be opened and draw water;
(6) after hydraulic reclamation completes, at draining curtain wall 2 tops, sand cushion 7 is set, in this sand cushion 7, buries vacuum pipe network 8 underground, and connect vacuum jet pump 4, then lay sealing film 9 sealings;
(7) check that draining curtain wall 2 and collecting well 3 are without after leaking, unlatching vacuum jet pump 4 vacuumizes, to specifying termination condition to stop.
The fine sand that draining curtain wall 2 use water flowings of the present invention are good or grit class coarse granule form, and these draining curtain wall 2 minimum widiths are 0.5m, can appropriately adjust depending on the height of draining curtain wall 2.
Flexible water drainage plate 1 of the present invention every spacing in layer is 0.8～1.5m.Flexible water drainage plate 1 can be selected base processing band drain routinely, and its model is: SPB-B, and SPB-C, SPB-D, or select drainage belt and the little band drain of large flux.
Collecting well 3 of the present invention is evenly arranged in draining curtain wall 2 according to the calculating of displacement, and 3 end of collecting well height is high in 2 ends of draining curtain wall.
Vacuum jet pump 4 of the present invention according to construction speed, requires in vacuum pipe network 8 and the water content of barged-in fill is evenly arranged substantially, and is set to suitable with every 800～1000 square metres of quantity of placing in operating area.
Draining curtain wall 2 of the present invention and collecting well 3, be arranged on two of edge, operating area side or surrounding sides in opposite directions.
When described draining curtain wall 2 is at two of edge, operating area in opposite directions during side arrangement, upper and lower two-layer adjacent flexible water drainage plate 1 is for being arranged in parallel.
In order to increase drainage effect, also can oblique increase placement of flexible band drain 1 in corner, operating area.
With reference to Fig. 5, another embodiment of the present invention, when the surrounding side arrangement of described draining curtain wall 2 at edge, operating area, upper and lower two-layer adjacent flexible water drainage plate 1 can be arranged in parallel, or is interlaced arrangement with reference to upper and lower two-layer adjacent flexible water drainage plate 1 in Fig. 5.
Draining curtain wall 2 of the present invention and collecting well 3 top seal modes are carried out with reference to the encapsulating method of conventional vacuum preloading.
During draining of the present invention, general minute two stages implemented.First stage relies on the selfweight stress draining during blowing-filling sludge and is extracted out by submersible pump in collecting well, second stage is arranged and is enabled vacuum jet pump, vacuumize forced-ventilated water, now submersible pump also needs to open and draw water in good time according to observed case, reduces water level in draining curtain wall.
The present invention utilizes soil body selfweight stress and negative pressure of vacuum to drive quickening foundation soil discharging consolidation, in processing layer, the moving line of the water of foundation soil is the band drain motion of vertically laying towards level substantially, again through band drain horizontal transport to the backward upper extraction of draining curtain wall, thereby reduce the water content of foundation soil, improve the intensity of ground.
Claims (8)
1. for a discharging consolidation method for hydraulic-filled soft clay consolidation process, it is characterized in that comprising the steps:
(1) to construction foundation pit carry out the division of operating area, the both sides width≤125m of every operating area;
(2) at the side, edge of operating area successively building is erect from bottom to top draining curtain wall and collecting well, the height that this draining curtain wall and collecting well are every layer is the above 0.5～1m of every layer of hydraulic reclamation face, this collecting well and draining curtain wall are connected, installing submersible pump in collecting well, and outlet pipe is drawn;
(3) to hydraulic reclamation soft clay in operating area, hydraulic reclamation THICKNESS CONTROL is in 0.8～1.5m;
(4) the flexible water drainage plate that on the hydraulic reclamation soft clay layer in reaching the operating area of thickness, level is laid, these flexible water drainage plate two ends are inserted in draining curtain wall and are connected with draining curtain wall;
(5) repeat (2) (3) (4) step, until hydraulic reclamation soft clay is to specifying elevation, then shallow skin soil layer or the blowing-filling sludge of preloading 0.4～0.45m on last layer flexible water drainage plate, wherein, after hydraulic reclamation soft clay layer 2m, submersible pump can be opened and draw water;
(6) after hydraulic reclamation completes, at draining curtain wall top, sand cushion is set, in this sand cushion, buries vacuum pipe network underground, and connect vacuum jet pump, then lay sealing film sealing;
(7) check that draining curtain wall and collecting well are without after leaking, unlatching vacuum jet pump vacuumizes, to specifying termination condition to stop.
2. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 1, is characterized in that: described draining curtain wall and collecting well, be arranged on two of edge, operating area side or surrounding sides in opposite directions.
3. according to a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process described in claim 1 or 2, it is characterized in that: described draining curtain wall forms with the good fine sand of water flowing or grit class coarse granule, and this draining curtain wall minimum widith is 0.5m.
4. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 1, is characterized in that: described flexible water drainage plate every spacing in layer is 0.8～1.5m.
5. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 2, it is characterized in that: described draining curtain wall is at two of edge, operating area in opposite directions during side arrangement, and upper and lower two-layer adjacent flexible water drainage plate is for being arranged in parallel.
6. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 2, it is characterized in that: described draining curtain wall is when the surrounding side arrangement at edge, operating area, and upper and lower two-layer adjacent flexible water drainage plate is to be arranged in parallel or upper and lower two-layer adjacent flexible water drainage plate is interlaced arrangement.
7. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 1, is characterized in that: described collecting well is evenly arranged in draining curtain wall, and at the bottom of collecting well, height is high at the bottom of draining curtain wall.
8. a kind of discharging consolidation method for hydraulic-filled soft clay consolidation process according to claim 1, it is characterized in that: described vacuum jet pump is evenly arranged in vacuum pipe network, and with every 800～1000 square metres of quantity settings of placing in operating area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134647.9A CN104110024B (en) | 2013-04-18 | 2013-04-18 | Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310134647.9A CN104110024B (en) | 2013-04-18 | 2013-04-18 | Drainage consolidation method for reinforcement treatment of hydraulic filling soft clay |
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| CN104110024A true CN104110024A (en) | 2014-10-22 |
| CN104110024B CN104110024B (en) | 2015-12-02 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338711A (en) * | 2017-06-20 | 2017-11-10 | 中交天津港湾工程研究院有限公司 | A kind of construction method that road is built on soft soil foundation |
| CN109706914A (en) * | 2019-01-21 | 2019-05-03 | 吴慧明 | It is a kind of to be layered the blast-filled ground method for processing foundation drained downwards |
| CN109826159A (en) * | 2019-03-11 | 2019-05-31 | 广东海工建设工程有限公司 | Hydraulic reclamation region soft base method for rapidly reinforcing and structure |
| CN112411795A (en) * | 2020-11-06 | 2021-02-26 | 中国港湾工程有限责任公司 | Method for treating foundation in hydraulic filling soft and weak area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980061918A (en) * | 1996-12-31 | 1998-10-07 | 임철웅 | Construction method of waste dumping and its device for preventing environmental pollution |
| CN102071675A (en) * | 2011-01-10 | 2011-05-25 | 广东省建筑科学研究院 | Soft soil foundation consolidation method combining drainage pile loading prepressing and deep mixing piles |
| CN102226335A (en) * | 2011-04-18 | 2011-10-26 | 中交四航工程研究院有限公司 | Foundation treatment method for controlling post-construction settlement and deformation of soft soil |
| CN102926375A (en) * | 2011-08-10 | 2013-02-13 | 同济大学 | Sludge discharge field constructing method for speeding up dehydration, solidification and stabilization of dredged sediment |
-
2013
- 2013-04-18 CN CN201310134647.9A patent/CN104110024B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980061918A (en) * | 1996-12-31 | 1998-10-07 | 임철웅 | Construction method of waste dumping and its device for preventing environmental pollution |
| KR100201320B1 (en) * | 1996-12-31 | 1999-06-15 | 임철웅 | Construction method of filled-up-land for solid waste treatment plant and soild waste treatment plant |
| CN102071675A (en) * | 2011-01-10 | 2011-05-25 | 广东省建筑科学研究院 | Soft soil foundation consolidation method combining drainage pile loading prepressing and deep mixing piles |
| CN102226335A (en) * | 2011-04-18 | 2011-10-26 | 中交四航工程研究院有限公司 | Foundation treatment method for controlling post-construction settlement and deformation of soft soil |
| CN102926375A (en) * | 2011-08-10 | 2013-02-13 | 同济大学 | Sludge discharge field constructing method for speeding up dehydration, solidification and stabilization of dredged sediment |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338711A (en) * | 2017-06-20 | 2017-11-10 | 中交天津港湾工程研究院有限公司 | A kind of construction method that road is built on soft soil foundation |
| CN109706914A (en) * | 2019-01-21 | 2019-05-03 | 吴慧明 | It is a kind of to be layered the blast-filled ground method for processing foundation drained downwards |
| CN109826159A (en) * | 2019-03-11 | 2019-05-31 | 广东海工建设工程有限公司 | Hydraulic reclamation region soft base method for rapidly reinforcing and structure |
| CN109826159B (en) * | 2019-03-11 | 2024-05-10 | 广东海工建设工程有限公司 | Quick reinforcement method and structure for soft foundation of hydraulic filling area |
| CN112411795A (en) * | 2020-11-06 | 2021-02-26 | 中国港湾工程有限责任公司 | Method for treating foundation in hydraulic filling soft and weak area |
| WO2022095881A1 (en) * | 2020-11-06 | 2022-05-12 | 中国港湾工程有限责任公司 | Foundation treatment method for weak hydraulic-fill region |
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Effective date of registration: 20211112 Address after: No. 850, Pudong Avenue, Pudong New Area, Shanghai 200120 Patentee after: CCCC Shanghai channel survey, design and Research Institute Co., Ltd Patentee after: CCCC dredging technology and equipment National Engineering Research Center Co., Ltd Address before: No. 850, Pudong Avenue, Pudong New Area, Shanghai 200120 Patentee before: CCCC Shanghai channel survey, design and Research Institute Co., Ltd |
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Effective date of registration: 20220512 Address after: 200120 No. 850, Pudong Avenue, Pudong New Area, Shanghai Patentee after: SHANGHAI WATERWAY ENGINEERING DESIGN AND CONSULTING Co.,Ltd. Address before: 200120 No. 850, Pudong Avenue, Pudong New Area, Shanghai Patentee before: SHANGHAI WATERWAY ENGINEERING DESIGN AND CONSULTING Co.,Ltd. Patentee before: CCCC dredging technology and equipment National Engineering Research Center Co., Ltd |