CN208293556U - A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system - Google Patents
A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system Download PDFInfo
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- CN208293556U CN208293556U CN201820360239.3U CN201820360239U CN208293556U CN 208293556 U CN208293556 U CN 208293556U CN 201820360239 U CN201820360239 U CN 201820360239U CN 208293556 U CN208293556 U CN 208293556U
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Abstract
The utility model discloses a kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system, solve the problems, such as that the prior art cannot be effectively reduced the preceding water level of rammer and significantly improve soft soil foundation deep layer weak soil intensity.Compound vertical drainage tube body (2) has been positioned apart from the initial binder course of graded broken stone (3) of 200 millimeters thicks, vertical drainage core pipe (9) are provided in compound vertical drainage tube body (2), tubulose filter membrane (10) are provided between the lateral wall of vertical drainage core pipe (9) and the inner sidewall of compound vertical drainage tube body (2), the top of vertical drainage core pipe (9) is connected with horizontal vacuum drinking-water pipe (8) and vacuum water pump (7), nail type hammer ram (12) is provided between the adjacent compound vertical drainage tube body (2) of two on the top surface of the initial binder course of graded broken stone (3) of 200 millimeters thicks.Soft base soil body settlement after construction after processing is controllable, foundation bearing capacity is obviously improved.
Description
Technical field
The present invention relates to a kind of Soft Ground system, in particular to a kind of deep blowing filling soft soil foundation of large area it is true
Empty dynamic consolidation composite drainage system.
Background technique
Currently, China's Coastal Areas economic construction is quickly grown, reclamation by pumping filling is insufficient to solve industrial land on beach,
It is currently widely used method.The soil body in reclamation by pumping filling region mainly has following characteristics on beach: original state soil body major embodiment
For mud or muddy soft soil, show that shearing strength is low, compressibility is big, void ratio is big, water content is high, rheological characteristic is strong and infiltration
Property difference design feature；The material composition of barged-in fill is more complicated, and majority is dredging silt, clay or silt, has and naturally contains
The soft modeling that water is high, void ratio is big, compressibility is high, shearing strength is low and infiltration coefficient is small moulds configuration state to stream.Therefore, ground
Large deformation and stable problem be the soil body processing when be badly in need of the central issue to be solved.Conventional soft-soil foundation treatment method has
The methods of preloading, vacuum method, dynamic consolidation method, Dynamic Drainage Consolidation Method, the processing method of these soft soil foundations
In the presence of improving, soft base soil body foundation capability is limited, ground effective reinforcement depth is smaller, settlement difference is excessive, it is tight to set requirement
The problems such as lattice, construction cost are expensive, construction takes a long time.Currently, being badly in need of developing one kind and capable of sufficiently meeting covering on high-moisture percentage
Water before rammer can be effectively reduced in the soft foundation processing intensity of barged-in fill and the consolidation process system and method for deformation requirements, this method
Position significantly improves soft soil foundation deep layer weak soil intensity, and constructing should be convenient and efficient.
Summary of the invention
The present invention provides a kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage systems, solve the prior art not
The technical issues of preceding water level of rammer can be effectively reduced and significantly improve soft soil foundation deep layer weak soil intensity.
The present invention is to solve the above technical problem by the following technical programs:
A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system, including original state Soft Soil Layer, in original state Soft Soil Layer
On be provided with the initial binder courses of graded broken stone of 200 millimeters thicks, the compartment of terrain on the initial binder course of graded broken stone of 200 millimeters thicks
It is provided with compound vertical drainage tube body, is provided with vertical drainage core pipe in compound vertical drainage tube body, in compound vertical drainage pipe
It is provided with water inlet on the tube wall of body, water sucking mouth is provided on the tube wall of vertical drainage core pipe, in vertical drainage
Tubulose filter membrane is provided between the lateral wall of core pipe and the inner sidewall of compound vertical drainage tube body, the top of vertical drainage core pipe connects
It is connected to horizontal vacuum drinking-water pipe, the other end of horizontal vacuum drinking-water pipe is linked together with vacuum water pump；It is compound vertical
Drainage conduit body is laid in matrix form, and the spacing between the compound vertical drainage tube body of adjacent two is 8-12 meters；In 200 millis
It is provided with nail type hammer ram between two adjacent compound vertical drainage tube bodies on the top surface of the thick initial binder course of graded broken stone of rice,
Nail type hammer ram is in wire nail shape, and the diameter of the upper cylinder of nail type hammer ram is 2-3 meters, the lower cylinder of nail type hammer ram
Diameter is 1-1.5 meters.
On the initial binder course of graded broken stone of 200 millimeters thicks, by sequence from top to bottom, it is disposed with two-way enhancing
Horizontal grate and the secondary binder course of the graded broken stone of 150 millimeters thicks；It is arranged on the secondary binder course of graded broken stone of 150 millimeters thicks
There is hydraulic reclamation soil layer.
The distance between top and the top surface of hydraulic reclamation soil layer of compound vertical drainage tube body are 100-200 millimeters；
A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system and construction technology, comprising the following steps:
The first step, the compound vertical drainage tube body of production take length longer than foundation treatment depth according to foundation treatment depth
Outer tube of 200 millimeters of the pipe as compound vertical drainage tube body, compartment of terrain processes water inlet on the tube wall of the outer tube, according to
Foundation treatment depth takes length 200 millimeters of pipe longer than foundation treatment depth as vertical drainage core pipe, in vertical drainage core pipe
Tube wall on compartment of terrain process water sucking mouth, vertical drainage core pipe is inserted into the outer tube of compound vertical drainage tube body, and
Tubulose filter membrane is provided between the lateral wall of vertical drainage core pipe and the inner sidewall of compound vertical drainage tube body；
Second step, the initial binder course of graded broken stone that 200 millimeters thicks are laid on original state Soft Soil Layer；
Third step, using manually or mechanically mode, plugged on the initial binder course of graded broken stone make it is compound vertical
Drainage conduit body, the lower end of compound vertical drainage tube body are inserted into the projected depth of basement process, the top of compound vertical drainage tube body
End is higher than 150 millimeters of the top surface of the initial binder course of graded broken stone；Compound vertical drainage tube body be in cells arranged in matrix, adjacent two
Spacing between horizontal vacuum drinking-water pipe is 8-12 meters；
The top of each vertical drainage core pipe is connected together by the 4th step by horizontal vacuum drinking-water pipe, then again and very
Empty pump water pump links together；；
5th step carries out first vacuum Yield rainfall relation operation, when the soil solidifying degree of original state Soft Soil Layer reaches 40%, and surpasses
When pore water pressure elimination reaches 85%, tamping energy dynamic consolidation is carried out to the soil body by nail type hammer ram, tamping force is 6,000,000
Ox/every square metre, until the soil solidifying degree of original state Soft Soil Layer reaches 80%；
6th step, the smooth tamping pit of backfill, remove horizontal vacuum drinking-water pipe and vacuum water pump, complete first vacuum power row
Water consolidation, sleeping crust layer under formation realize the large deformation dynamic water-drainage consolidation of the soft base soil body；
7th step, the two-way enhancing horizontal grate of the soil body topping laying on the initial binder course of graded broken stone and 150 millimeters
The thick secondary binder course of graded broken stone；
8th step is lifted up compound vertical drainage tube body, and the top of compound vertical drainage tube body is made to be higher than graded broken stone
The top of each compound vertical drainage tube body is connected to by horizontal vacuum drinking-water pipe one by 150 millimeters of the top surface of secondary binder course
It links together after rising with vacuum water pump, carries out the operation of secondary vacuum Yield rainfall relation；
9th step reaches 60% when the hydraulic reclamation soil layer degree of consolidation, and when excess pore water pressure elimination reaches 85%, passes through nail type
Hammer ram carries out low energy dynamic consolidation to the soil body, and tamping force is 2,000,000 Ns/every square metre, until the soil solidifying degree of hydraulic reclamation soil layer
Reach 90%, tamping pit is backfilled smooth, removes horizontal vacuum drinking-water pipe and vacuum water pump, extract compound vertical drainage tube body, seal
Foundation drainage pore is closed, secondary vacuum dynamic water-drainage consolidation is completed, realizes the small deformation dynamic water-drainage consolidation of weak soil；
Tenth step, with bull-dozer, to treated, soft soil foundation region carries out levelling of the land, and smooth laggard action edge rolls
It is rolled with static(al).
The bore of compound vertical drainage tube body is 70 millimeters.
The present invention can effectively realize the discharging consolidation of the reclaimed ground with deep soft soil, duration shortening, cost
Rationally, and after processing soft base soil body settlement after construction is controllable, foundation bearing capacity is obviously improved.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the present invention in main view direction；
Fig. 2 is structural schematic diagram of the present invention in overlook direction；
Fig. 3 is the sectional view along A-A in Fig. 2；
Fig. 4 is the structural schematic diagram of the casing 2 that vertically draws water of the invention；
Fig. 5 is the structural schematic diagram of nail type hammer ram 12 of the invention；
Fig. 6 is the structural schematic diagram of nail type hammer ram 12 of the invention in attached apparent direction.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system, including original state Soft Soil Layer 1, in original state Soft Soil Layer
The initial binder course 3 of graded broken stone of 200 millimeters thicks is provided on 1, on the initial binder course 3 of graded broken stone of 200 millimeters thicks between
Ground is provided with compound vertical drainage tube body 2, is provided with vertical drainage core pipe 9 in compound vertical drainage tube body 2, compound vertical
It is provided with water inlet 11 on the tube wall of drainage conduit body 2, is provided with water sucking mouth on the tube wall of vertical drainage core pipe 9,
It is provided with tubulose filter membrane 10 between the lateral wall of vertical drainage core pipe 9 and the inner sidewall of compound vertical drainage tube body 2, it is vertical to arrange
The top of water core pipe 9 is connected with horizontal vacuum drinking-water pipe 8, and the other end of horizontal vacuum drinking-water pipe 8 is connect with vacuum water pump 7
Together；Compound vertical drainage tube body 2 is laid in matrix form, between the compound vertical drainage tube body 2 of adjacent two
Spacing is 8-12 meters；The two adjacent compound vertical drainage pipes on the top surface of the initial binder course 3 of graded broken stone of 200 millimeters thicks
Nail type hammer ram 12 is provided between body 2, nail type hammer ram 12 is in wire nail shape, and the diameter of the upper cylinder of nail type hammer ram 12 is
2-3 meters, the diameter of the lower cylinder 13 of nail type hammer ram 12 is 1-1.5 meters, and water outlet through-hole 14 is provided on nail type hammer ram 12.
The transfer of compound vertical drainage tube body 2 is 9 meters, and advance is 9 meters, and the outer diameter of compound vertical drainage tube body 2 is 0.07 meter.
On the initial binder course 3 of graded broken stone of 200 millimeters thicks, by sequence from top to bottom, it is disposed with two-way increasing
The secondary binder course 5 of graded broken stone of the strong millimeters thick of horizontal grate 4 and 150；In the secondary binder course 5 of the graded broken stone of 150 millimeters thicks
On be provided with hydraulic reclamation soil layer 6.
The distance between top and the top surface of hydraulic reclamation soil layer 6 of compound vertical drainage tube body 2 are 100-200 millimeters；
A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system and construction technology, comprising the following steps:
The first step, the compound vertical drainage tube body 2 of production take length longer than foundation treatment depth according to foundation treatment depth
Outer tube of 200 millimeters of the pipe as compound vertical drainage tube body 2, compartment of terrain processes water inlet 11 on the tube wall of the outer tube,
According to foundation treatment depth, takes length 200 millimeters of pipe longer than foundation treatment depth as vertical drainage core pipe 9, vertically arranging
Compartment of terrain processes water sucking mouth on the tube wall of water core pipe 9, and vertical drainage core pipe 9 is inserted into the outer of compound vertical drainage tube body 2
Guan Zhong, and tubulose filter membrane is provided between the lateral wall of vertical drainage core pipe 9 and the inner sidewall of compound vertical drainage tube body 2
10；
The initial binder course 3 of second step, the graded broken stone that 200 millimeters thicks are laid on original state Soft Soil Layer 1；
Third step, using manually or mechanically mode, plugged on the initial binder course 3 of graded broken stone make it is compound vertical
Drainage conduit body 2, the lower end of compound vertical drainage tube body 2 are inserted into the compound vertical drainage tube body 2 of projected depth of basement process
Top is higher than 150 millimeters of the top surface of the initial binder course 3 of graded broken stone；Compound vertical drainage tube body 2 is in cells arranged in matrix, phase
Spacing between adjacent two horizontal vacuum drinking-water pipes 8 is 8-12 meters；
The top of each vertical drainage core pipe 9 is connected together by horizontal vacuum drinking-water pipe 8 by the 4th step, then again with
Vacuum water pump 7 links together；；
5th step carries out first vacuum Yield rainfall relation operation, the vacuum Yield rainfall relation radial direction shadow of each compound vertical drainage tube body 2
Ringing range is a border circular areas 15, and when the soil solidifying degree of original state Soft Soil Layer 1 reaches 40%, and excess pore water pressure elimination reaches
When to 85%, tamping energy dynamic consolidation is carried out to the soil body by nail type hammer ram 12, high energy tamping force is 6,000,000 Ns/every square metre,
Until the soil solidifying degree of original state Soft Soil Layer 1 reaches 80%, this step using " primary plug, continue precipitation, a drop one is rammed,
Repeatedly ram " technology characteristics；The dynamic consolidation radial direction coverage of each nail type hammer ram 12 is another border circular areas 16.
6th step, the smooth tamping pit of backfill, remove horizontal vacuum drinking-water pipe 8 and vacuum water pump 7, complete first vacuum power
Discharging consolidation, sleeping crust layer under formation realize the large deformation dynamic water-drainage consolidation of the soft base soil body；
The two-way milli of enhancing horizontal grate 4 and 150 of 7th step, the soil body topping laying on the initial binder course 3 of graded broken stone
The thick secondary binder course 5 of graded broken stone of rice；
8th step is lifted up compound vertical drainage tube body 2, so that the top of compound vertical drainage tube body 2 is higher than gradation broken
The top of each compound vertical drainage tube body 2 is connected to by 150 millimeters of the top surface of the secondary binder course 5 of stone by horizontal vacuum drinking-water pipe 8
It links together after together with vacuum water pump 7, carries out the operation of secondary vacuum Yield rainfall relation；
9th step reaches 60% when 6 degree of consolidation of hydraulic reclamation soil layer, and when excess pore water pressure elimination reaches 85%, passes through nail
Type hammer ram 12 carries out low energy dynamic consolidation to the soil body, and tamping force is 2,000,000 Ns/every square metre, until the soil body of hydraulic reclamation soil layer 6
The degree of consolidation reaches 90%, and tamping pit is backfilled to smooth, dismounting horizontal vacuum drinking-water pipe 8 and vacuum water pump 7, the compound vertical row of extraction
Water pipe body 2 closes ground drain tube holes, completes secondary vacuum dynamic water-drainage consolidation, realizes that the small deformation dynamic drainage of weak soil is solid
Knot；
Tenth step, with bull-dozer, to treated, soft soil foundation region carries out levelling of the land, and smooth laggard action edge rolls
It is rolled with static(al).
The bore of compound vertical drainage tube body 2 is 70 millimeters.
Claims (3)
1. a kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system, including original state Soft Soil Layer (1), in original state Soft Soil Layer
(1) the initial binder course of graded broken stone (3) of 200 millimeters thicks is provided on, which is characterized in that in the graded broken stone of 200 millimeters thicks
It has been positioned apart from compound vertical drainage tube body (2) on initial binder course (3), has been provided in compound vertical drainage tube body (2) perpendicular
To draining core pipe (9), water inlet (11) are provided on the tube wall of compound vertical drainage tube body (2), in vertical drainage core
It manages and is provided with water sucking mouth on the tube wall of (9), lateral wall and compound vertical drainage tube body (2) in vertical drainage core pipe (9)
Inner sidewall between be provided with tubulose filter membrane (10), the top of vertical drainage core pipe (9) is connected with horizontal vacuum drinking-water pipe (8),
The other end of horizontal vacuum drinking-water pipe (8) is linked together with vacuum water pump (7)；Compound vertical drainage tube body (2) is
Be square laying, and the spacing between the compound vertical drainage tube body (2) of adjacent two is 8-12 meters；In the gradation of 200 millimeters thicks
There are nail type hammer ram (12), nail type between two adjacent compound vertical drainage tube bodies (2) on the top surface of the initial binder course of rubble (3)
Hammer ram (12) is in wire nail shape, and the diameter of the upper cylinder of nail type hammer ram (12) is 2-3 meters, the lower part of nail type hammer ram (12)
The diameter of cylindrical body (13) is 1-1.5 meters.
2. a kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system according to claim 1, which is characterized in that
On the initial binder course of graded broken stone (3) of 200 millimeters thicks, by sequence from top to bottom, it is horizontal to be disposed with two-way enhancing
The secondary binder course of graded broken stone (5) of grid (4) and 150 millimeters thicks；In the secondary binder course of the graded broken stone of 150 millimeters thicks (5)
On be provided with hydraulic reclamation soil layer (6).
3. a kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system according to claim 2, which is characterized in that
The distance between top and the top surface of hydraulic reclamation soil layer (6) of compound vertical drainage tube body (2) are 100-200 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820360239.3U CN208293556U (en) | 2018-03-16 | 2018-03-16 | A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system |
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| CN201820360239.3U CN208293556U (en) | 2018-03-16 | 2018-03-16 | A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277794A (en) * | 2018-03-16 | 2018-07-13 | 中铁二十局集团第六工程有限公司 | A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system |
| CN110130314A (en) * | 2019-04-04 | 2019-08-16 | 中国电建集团华东勘测设计研究院有限公司 | A kind of drop pump synergy vacuum pre-press reinforcing structure of soft soil foundation |
-
2018
- 2018-03-16 CN CN201820360239.3U patent/CN208293556U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277794A (en) * | 2018-03-16 | 2018-07-13 | 中铁二十局集团第六工程有限公司 | A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system |
| CN110130314A (en) * | 2019-04-04 | 2019-08-16 | 中国电建集团华东勘测设计研究院有限公司 | A kind of drop pump synergy vacuum pre-press reinforcing structure of soft soil foundation |
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