CN100532729C - High vacuum well-points dewatering groundwork treatment method by shallow ramming compaction and deep blasting compaction - Google Patents
High vacuum well-points dewatering groundwork treatment method by shallow ramming compaction and deep blasting compaction Download PDFInfo
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- CN100532729C CN100532729C CNB2007100248721A CN200710024872A CN100532729C CN 100532729 C CN100532729 C CN 100532729C CN B2007100248721 A CNB2007100248721 A CN B2007100248721A CN 200710024872 A CN200710024872 A CN 200710024872A CN 100532729 C CN100532729 C CN 100532729C
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Abstract
The present invention relates to a method for treating various soft soil stratum ground bases. Said method is characterized by adopting underground deep-layer blasting compaction technique and ground surface shallow-layer vibration ramming technique and making them be combined with high-vacuum well-point dewatering technique so as to implement treatment of soft soil stratum ground base with large area.
Description
Technical field
The present invention relates to a kind of large tracts of land deep layer soft soil foundation processing method, particularly a kind of shallow-layer vibration ramming compaction and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation.Possession base processing technology field.
Background technology
Before the present invention makes, in the large-area soft ground processing method, ZL01127046.2 has described a kind of High vacuum compacting method flexible foundation treatment method, promptly adopts the high vacuum well-points dewatering to add the water content that vibroroller cmpacting or dynamic compaction method reduce the processed soil body, to improve the compactness of the soil body.This inventive method construction period is short, and construction cost is low, and treatment effect is better.The major defect of this method is owing to vibroroller cmpacting or rams finite energy by force that ground is handled depth as shallow, generally can only handle 8 meters with the ground within the interior shallow-layer scope.And along with the expansion of every infrastructure scale, especially coastal, riverine and in ground lakeland when carrying out having stable political situation construction such as speedway as harbour, city, soft foundation is darker, not only above 10 meters, even reach 18 meters and more than, under most situations all more than 10 meters.Therefore, above-mentioned patented method can only to 10 meters with interior shallow layer soft soil foundation generation effect, and can't be to soft foundation generation effect more than 10 meters, its application is restricted, also just can't large-scale promotion.Blasting compaction method is one of soft soil foundation reinforcing method, mainly be to cause weak soil compacted by producing shock wave at the weak soil internal explosion, simultaneously because blast also produces excess pore water pressure, if but do not have drainage channel or passage not smooth, excess pore water pressure be difficult for would to dissipate and does not reach the purpose of soil solidifying.
Summary of the invention
The objective of the invention is to overcome above-mentioned two kinds of defectives that method exists separately, absorb its advantage, a kind of shallow-layer vibration ramming compaction and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation that the duration is short, cost is low, the processing degree of depth is dark that have is provided.
The object of the present invention is achieved like this: a kind of shallow-layer vibration ramming compaction and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation is characterized in that: it is to adopt the underground deep layer blasting compaction with the ground machine vibration or ram the mode that shallow-layer is closely knit and high vacuum well-points dewatering three combines by force and carry out the large-area soft ground processing.
Shallow-layer vibration ramming compaction of the present invention and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation, described method for processing foundation has two kinds:
Method one:
Step 4, be abound with well point pipe being reinforced the foundation region ground surface, well point pipe depth of placement 8～18m, the well point pipe links to each other with vacuum pump by total header, the draining of startup vacuum pump.
Method two:
Step 4, withdraw from vibroroller cmpacting machinery or ram equipment by force, be abound with the well point pipe being reinforced the foundation region ground surface, well point pipe depth of placement 8～18m, the well point pipe links to each other with vacuum pump by total header, the draining of startup vacuum pump.
The difference of above-mentioned two kinds of methods is:
Method one: high vacuum well-points dewatering in shallow-layer and deep layer earlier, vibroroller cmpacting or ram shallow layer reinforcement by force then, back boring blast deep layer is reinforced high vacuum well-points dewatering in shallow-layer and deep layer again.Its advantage is: will form crust layer behind the shallow layer reinforcement earlier, deep layer blast impulse wave energy mainly acts on deep layer, makes deep foundation obtain ground extruding better.
Method two: high vacuum well-points dewatering in shallow-layer and deep layer earlier, boring blast deep layer is reinforced then, and after vibration rolls or rams by force shallow layer reinforcement, high vacuum well-points dewatering in shallow-layer and deep layer again.Its advantage is: the pore water that the deep layer blast produces can be poured into ground by shallow-layer smoothly, cooperates the high vacuum well-points dewatering, and it is fixed to accelerate deep foundation.
The present invention adopts deep layer blasting compaction, shallow-layer mechanical oscillation to roll or rams by force with high vacuum well-points dewatering method and organically combines, and vibration of high vacuum well-points dewatering close fit shallow-layer and deep layer blast are finished ground through two to three operation circulations and handled.
The present invention has reduced groundwater table by high vacuum precipitation, reduced the moisture content in the soil body, and active porosity is increased, carry out deep layer blast and combined ground mechanical oscillation or strong the rammer simultaneously, on the one hand the moisture content in the ground skeleton soil is discharged by force, the vibration of blast associating simultaneously makes the soil body skeleton mesopore of increase become closely knit again, the high vacuum well-points dewatering can be united blast the pore water of vibration generation and be discharged rapidly, therefore advantage of the present invention mainly is a synergy, organically combine, combination among the strong ones, and reached 1+1+1〉3 effect.
The present invention is in conjunction with to the processing method of shallow layer soft soil foundation with to the processing method of deep layer soft soil foundation, and the process that whole deep layer soft soil foundation is handled is simple, and the cycle is short, and cost is also low.
In sum, advantage of the present invention and effect are: by organic optimum organization of three kinds of technology, cal rolling vibration or strong rammer and deep layer drill blast forced-ventilated water combine with the vacuum well point precipitation, large tracts of land shallow-layer and deep layer soft soil foundation have been reinforced effectively, handle the degree of depth and can reach more than 18 meters, be specially adapted to barged-in fill, silt foundation, bury in silt or the reinforcing of flour sand interbedded foundation soil base.This method and speed of application are fast, and the reinforcing expense is low, and is simple to operation, the efficiency of construction height, and ground stabilization is effective.
Description of drawings
Fig. 1 is the layout schematic diagram of the inventive method.
Fig. 2 is that the facade of the inventive method is arranged schematic diagram.
Among the figure: well point pipe 1, total header 2, vacuum pump 3, vibroroller cmpacting machinery 4, by force ram equipment 5, explosive hole 6, the blasting charge 7, lead fire lead-in wire 8, sand gravel 9.
The specific embodiment
Embodiment 1:
As Fig. 1,2, large tracts of land is vertically stuck with well point pipe 1 in being reinforced the zone, well point pipe insertion depth 8～18m, and well point pipe 1 is connected to total header 2, and total header 2 links to each other with vacuum pump 3, starts vacuum pump 3 draining dewatering, and shallow layer foundation soil is fixed.Extract well point pipe, arrange vibroroller cmpacting machinery 4 on the regional ground or ram equipment 5 by force being reinforced, Vibration on Start-up rolling compaction machine 4 or ram equipment 5 by force and make that to be reinforced the regional shallow layer foundation soil body closely knit, and shallow soil skeleton mesopore elutriation is gone out.Withdraw from vibroroller cmpacting machinery or ram equipment by force, get out some explosive hole 6 to 8～18m with rig, explosive hole 6 is triangle or quincuncial arrangement, the spacing of explosive hole 6 is 3m to 12m, in explosive hole 6, place the vertical tubular blasting charge 7 of one or a few blocks and draw and lead fire lead-in wire 8 along the degree of depth, stop up separately with sand gravel 9 between the blasting charge 7, explosive in the blasting charge is anti-water plastic explosive, light and lead fire lead-in wire 8 blasting charge 7 in the deep foundation explosive hole that detonates, make the deep foundation soil body closely knit, and deep soil skeleton mesopore elutriation is gone out; Be covered with well point pipe 1 being reinforced the vertical large tracts of land of foundation region ground surface, well point pipe insertion depth 8～18m, the well point pipe links to each other with vacuum pump 2 by total header, start the vacuum pump draining, groundwater table is reduced, the pore water that vibroroller cmpacting or strong rammer and deep layer blast are produced is discharged, and impels the growth of shallow-layer and deep foundation soil consolidation strength.
Embodiment 2:
As Fig. 1,2, the vertical well point pipe 1 that inserts in being reinforced the zone, well point pipe insertion depth 8～18m, well point pipe 1 is connected to total header 2, and total header 2 links to each other with vacuum pump 3, starts vacuum pump 3 draining dewatering, and shallow layer foundation soil is fixed; Extract the well point pipe, get out well point explosive hole 6 to 8～18m with rig, explosive hole 6 is triangle or quincuncial arrangement, the spacing of explosive hole 6 is 3m to 12m, places the vertical tubular blasting charge 7 of one or a few blocks and draws and lead fire lead-in wire 8 along the degree of depth in explosive hole 6, stops up separately with sand gravel 9 between the blasting charge 7, explosive is anti-water plastic explosive in the blasting charge, light and lead fire lead-in wire 8 blasting charge 7 in the deep foundation explosive hole that detonates, make the deep foundation soil body compacted, and deep soil skeleton mesopore elutriation is gone out; Arrange vibroroller cmpacting machinery 4 on the ground or ram equipment 5 by force, Vibration on Start-up rolling compaction machine 4 or ram equipment 5 by force and make that to be reinforced the regional shallow layer foundation soil body closely knit, and shallow soil skeleton mesopore elutriation is gone out.Withdraw from vibroroller cmpacting machinery or ram equipment by force, vertically insert well point pipe 1 being reinforced the foundation region ground surface, well point pipe insertion depth 8～18m, the well point pipe links to each other with vacuum pump 2 by total header, start the vacuum pump draining, groundwater table is reduced, and the pore water that vibroroller cmpacting or strong rammer and deep layer blast are produced is discharged, and impels the growth of shallow-layer and deep foundation soil consolidation strength.
Above-mentioned steps can be carried out repeatedly according to the needs of ground stabilization.
Protection scope of the present invention is not limited only to the description of present embodiment.
Claims (6)
1, a kind of shallow-layer vibration ramming compaction and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation, it is characterized in that: it is to adopt the underground deep layer blasting compaction with the ground machine vibration or ram the mode that shallow-layer is closely knit and high vacuum well-points dewatering three combines by force and carry out the large-area soft ground processing, and described method comprises following processing step:
Step 1, be abound with well point pipe being reinforced the foundation region ground surface, well point pipe depth of placement 8～18m, the well point pipe links to each other with vacuum pump by total header, the draining of startup vacuum pump;
Step 2, extract well point pipe, arrange vibroroller cmpacting machinery on the foundation region ground or ram equipment by force being reinforced, Vibration on Start-up rolling compaction machine or ram equipment by force;
Step 3, withdraw from vibroroller cmpacting machinery or ram equipment by force, get out some explosive holes to 8～18m, place the blasting charge along the inherent different depth of explosive hole place and draw and lead the fire lead-in wire, light and lead the fire lead-in wire blasting charge in the deep foundation explosive hole that detonates with rig;
Step 4, be abound with well point pipe being reinforced the foundation region ground surface, well point pipe depth of placement 8～18m, the well point pipe links to each other with vacuum pump by total header, the draining of startup vacuum pump.
2, a kind of shallow-layer vibration ramming compaction according to claim 1 and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation is characterized in that: described method is finished ground through two to three operation circulations and is handled.
3, a kind of shallow-layer vibration ramming compaction according to claim 1 and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation is characterized in that: place the vertical tubular blasting charge of one or a few blocks (7) along the degree of depth in explosive hole (6).
4, a kind of shallow-layer vibration ramming compaction according to claim 3 and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation is characterized in that: stop up separately with sand gravel (9) between the number bag blasting charge (7).
5, a kind of shallow-layer vibration ramming compaction according to claim 1 and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation, it is characterized in that: described explosive hole (6) is triangle or quincuncial arrangement, and the spacing of each explosive hole (6) is 3m to 12m.
6, a kind of shallow-layer vibration ramming compaction according to claim 1 and deep layer blasting compaction associating high vacuum well-points dewatering method for processing foundation, it is characterized in that: explosive is anti-water plastic explosive in the described blasting charge.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100248721A CN100532729C (en) | 2007-06-28 | 2007-06-28 | High vacuum well-points dewatering groundwork treatment method by shallow ramming compaction and deep blasting compaction |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100248721A CN100532729C (en) | 2007-06-28 | 2007-06-28 | High vacuum well-points dewatering groundwork treatment method by shallow ramming compaction and deep blasting compaction |
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| CN200910135452XA Division CN101538849B (en) | 2007-06-28 | 2007-06-28 | Foundation treatment method combining vibration ramming compaction at shallow layer and blasting compaction at deep layer with well-point dewatering |
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| CN101089297A CN101089297A (en) | 2007-12-19 |
| CN100532729C true CN100532729C (en) | 2009-08-26 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102912806B (en) * | 2012-09-27 | 2016-01-20 | 中交三航局第二工程有限公司 | A kind of construction method of dewatering well |
| CN103774640B (en) * | 2014-02-24 | 2016-03-30 | 北京中科力爆炸技术工程有限公司 | The method of combined type dike shaping blasting treatment of soft foundation for the first time |
| CN106978801B (en) * | 2017-03-22 | 2023-06-06 | 江苏澄工科技有限公司 | Multifunctional vibration air compression pipe and construction method for reinforcing soft soil foundation by using same |
| CN108005055B (en) * | 2017-12-01 | 2019-08-06 | 浙江宏宇工程勘察设计有限公司 | A kind of soft soil foundation burst point cavitation dynamic compaction method and its complexes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065503A (en) * | 1992-01-17 | 1992-10-21 | 中国科学院力学研究所 | The combination of explosion with strong tamping for compacting method of saturated loose sand |
| CN1330189A (en) * | 2001-07-28 | 2002-01-09 | 徐士龙 | 'High-vacuum compacting method' for quickly treaitng soft foundation |
| CN1793519A (en) * | 2005-12-29 | 2006-06-28 | 徐士龙 | Method for treating soft foundition by fast 'high vacuum impacting dense, pile base' compound method |
| CN1818227A (en) * | 2006-03-07 | 2006-08-16 | 张志铁 | Combined method for fastening soft soil ground by dual vacuum prepressing and dynamic extruding method |
| CN1884709A (en) * | 2006-06-21 | 2006-12-27 | 徐士龙 | Quick soft groundsill consolidation method of filling water for prepressing, kinetic differential pressure for discharging water |
| CN1948632A (en) * | 2006-10-19 | 2007-04-18 | 杨静明 | Reinforcement method of deep layer soft soil foundation |
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2007
- 2007-06-28 CN CNB2007100248721A patent/CN100532729C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065503A (en) * | 1992-01-17 | 1992-10-21 | 中国科学院力学研究所 | The combination of explosion with strong tamping for compacting method of saturated loose sand |
| CN1330189A (en) * | 2001-07-28 | 2002-01-09 | 徐士龙 | 'High-vacuum compacting method' for quickly treaitng soft foundation |
| CN1793519A (en) * | 2005-12-29 | 2006-06-28 | 徐士龙 | Method for treating soft foundition by fast 'high vacuum impacting dense, pile base' compound method |
| CN1818227A (en) * | 2006-03-07 | 2006-08-16 | 张志铁 | Combined method for fastening soft soil ground by dual vacuum prepressing and dynamic extruding method |
| CN1884709A (en) * | 2006-06-21 | 2006-12-27 | 徐士龙 | Quick soft groundsill consolidation method of filling water for prepressing, kinetic differential pressure for discharging water |
| CN1948632A (en) * | 2006-10-19 | 2007-04-18 | 杨静明 | Reinforcement method of deep layer soft soil foundation |
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