CN203247575U - Stereoscopic combined type dynamic drainage consolidation system used for heterogeneous field soft foundation - Google Patents
Stereoscopic combined type dynamic drainage consolidation system used for heterogeneous field soft foundation Download PDFInfo
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- CN203247575U CN203247575U CN2013201744819U CN201320174481U CN203247575U CN 203247575 U CN203247575 U CN 203247575U CN 2013201744819 U CN2013201744819 U CN 2013201744819U CN 201320174481 U CN201320174481 U CN 201320174481U CN 203247575 U CN203247575 U CN 203247575U
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Abstract
The utility model discloses a stereoscopic combined type dynamic drainage consolidation system used for a heterogeneous field soft foundation. According to the stereoscopic combined type dynamic drainage consolidation system used for the heterogeneous field soft foundation, stereoscopic combined type drainage combining gravity pumping with vacuum pressure drainage is carried out on the heterogeneous field soft foundation to be treated, and dynamic compression is carried out on the heterogeneous field soft foundation to be treated to accelerate drainage consolidation of soft soil. The stereoscopic combined type dynamic drainage consolidation system used for the heterogeneous field soft foundation is a novel dynamic drainage consolidation method which is good in treating effect, short in construction period, low in manufacturing cost, and wide in application range. The stereoscopic combined type dynamic drainage consolidation system used for the heterogeneous field soft foundation is suitable for treatment of heterogeneous field soft foundations with sandy soil mixed with sludgy cohesive soil or floury soil mixed with loam serving as backfill materials, or primitive mud flats with loam mixed with soil layers, and can solve the foundation treatment difficulty caused by lack of heterogeneity.
Description
Technical field
The utility model relates to the geotechnical engineering Soft Soil Subgrade Treatment Techniques category in the building field, relates in particular to a kind of three-dimensional assembly power drain consolidation system and job practices that is applied in the Soft Ground of heterogeneous body place.
Background technology
In recent years, day by day in short supply along with the fast development of China's economic construction and China's land resources, large-scale Tidal Flat Reclamation epeirogenetic engineering is launched in coastal, riverine, the along the lake area of China.This type of place mostly is mixed the filling out of silt particle such as the mud, mucky soil, sandy soil of artificial hydraulic reclamation (or backfill) high-moisture and forms, such heterogeneous body place have lithology level to vertically upward inhomogeneities,: on the one hand hydraulic reclamation (or backfill) material source is complicated, water content is high, variable thickness, the loose character of ultra-soft that intensity is low, the water content of hydraulic reclamation ultra-soft soil is high, is stream mud even mud scum state; This class ultra-soft soil is because of being covered on the primary weak soil under the original beach on the other hand, makes the place form that the soil body that significantly underlies is soft, the softer diadactic structure of the top covering soil body.The permeance property difference of the various trait soil body and cause rate of consolidation different, there are the technical barriers such as differential settlement is obvious, bearing capacity of foundation soil is low, saturated sand liquefaction in the place, must just can become available land resources through the discharging consolidation processing.
For many years, China has accumulated the successful technology of many processing saturated soft soils, as: piling prepressing, vacuum preloading, the vacuum-static(al) discharging consolidation methods such as preloading joint preloading, plastic draining board adds the dynamic water-drainage consolidation methods such as strong rammer, Dewatering dynamic compaction, High vacuum compacting method.But cause the place non-homogeneity because the barged-in fill of various genetic types makes up with primary weak soil, cause its thickness of soft soil, permeance property, underground water proterties all level to have vertically upward notable difference.Adopt these existing soft-soil foundation treatment methods to be difficult to adapt to this type of heterogeneous body place, after this type of heterogeneous body place forms, also be difficult to carry out within a short period of time engineering construction, extremely inadaptable with the economic construction requirement of fast development.
The utility model content
The purpose of this utility model is exactly that heterogeneous body place for the combination of the barged-in fill of various genetic types and primary weak soil provides heterogeneous body place Soft Ground system and the processing method that a kind for the treatment of effect is good, the duration is fast, cost is low, applied widely---three-dimensional assembly power drain consolidation system and job practices.
To achieve these goals, the technical solution of the utility model is: the three-dimensional assembly power drain consolidation system of a kind of heterogeneous body place soft foundation, it comprises drainage system, it is characterized in that: described drainage system comprises the underground horizontal drainage channel and the subsurface grid stratum water flat raft aquaporin that is arranged in the cohesive soil hole of poor permeability that is arranged in good penetrability and has the sand class loose ground of Free water water-head, described underground horizontal drainage channel is connected the gravity pipe well that draws water, and the draw water shaft bottom of pipe well of described gravity is provided with the first submersible pump; Intersection at described subsurface grid stratum water flat raft aquaporin lays connection vertical drainage passage, be provided with vacuum drainpipe in the described vertical drainage passage, described vacuum drainpipe passes the vertical drainage passage and is tightly connected with subsurface grid stratum water flat raft aquaporin, and vacuum drainpipe is connected with vacuum pump.
In such scheme:
The bottom of described vertical drainage passage is provided with the second submersible pump.
Also comprise intending processing the dynamic pressurization system that heterogeneous body place soft foundation applies the dynamic pressurization load.
Described vertical drainage passage is the vertical drainage pipe well that hole diameter is not less than 150mm; Described vertical drainage passage bottom is bag net filtration pipe with holes; The pipe well borehole wall outside backfill thickness of vertical drainage passage is not less than the medium coarse sand drainage layer of 100mm.
The depth of burying of described underground horizontal drainage channel is the most shallow to be lower than incipient stability groundwater table before the precipitation.
In intending the soft soil body in processing heterogeneous body place, be provided with the water-level observation hole.
Described underground horizontal drainage channel is one or more compositions of vacuum filter pipe, plastic draining board, plastic blind-ditch, sandstone french drain, common filter pipe; Subsurface grid stratum water flat raft aquaporin is one or more compositions of vacuum filter pipe, plastic draining board, plastic blind-ditch, sandstone french drain, common filter pipe.
Soft foundation three-dimensional assembly power discharging consolidation method in a kind of heterogeneous body place is characterized in that it comprises following steps:
1), subregion is carried out in the heterogeneous body place, with intend processing mollisol be divided into the loose sandy soil that press from both sides mucky soil, the loose sandy soil that presss from both sides silt and hydraulic reclamation without the interlayer sandy soil;
2), in the loose sandy soil of folder silt, bury the underground horizontal drainage channel underground, set again the gravity pipe well that draws water, draw water pipe well and underground horizontal drainage channel of gravity connected, gravity draw water pipe well enter into hydraulic reclamation without the interlayer sandy soil, arrange the first submersible pump in the draw water shaft bottom of pipe well of gravity, can carry out vertical gravity and draw water;
3), in the loose sandy soil of folder mucky soil, bury the subsurface grid stratum water flat raft aquaporin of single or multiple lift underground, lay the vertical drainage passage in subsurface grid stratum water flat raft aquaporin intersection, and make the vertical drainage passage be communicated with the three-dimensional drainage system of formation with subsurface grid stratum water flat raft aquaporin; Arrange the second submersible pump in the shaft bottom of vertical drainage passage, can carry out vertical gravity and draw water;
4), in the vertical drainage passage, vacuum drainpipe is set, vacuum drainpipe is connected with vacuum pump, can carries out level to vacuum dehydration;
5), by continuous carrying out draw water fixed by vertical gravity and level to the fixed three-dimensional combined water drain that forms of vacuum dehydration, make and intend to process mollisol body structure discharging consolidation within a short period of time and become high-intensity homogeneous artificial foundation soil.
In the loose sandy soil of the folder silt of poor permeability, also employing level is drawn water fixed to vacuum dehydration.
Carry out three-dimensional combined water drain fixed in, carry out dynamic pressurization to intend processing heterogeneous body place soft foundation, the mode of described dynamic pressurization is one or more in strong rammer, vibroroller cmpacting, impact-rolling, the hydraulic pressure compacting.
The utility model is the new type power discharging consolidation method that a kind for the treatment of effect is good, the duration is fast, cost is low, applied widely, be applicable to hydraulic reclamation (backfill) material with sandy soil folder Muddy Bottoms cohesive soil or silt, silt particle mixed fill out and original beach under have the heterogeneous body place Soft Ground such as the mutual soil layer of silt particle, can overcome the ground that the place non-homogeneity brings and process a difficult problem.
Description of drawings
Fig. 1 is the utility model neutral body formula assembly power drain consolidation system schematic diagram;
Fig. 2 is the structural representation of the subsurface grid stratum water flat raft aquaporin in the utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is convenient to be well understood to the utility model, but they do not consist of restriction to the utility model.
The three-dimensional assembly power drain consolidation system of a kind of heterogeneous body place soft foundation as shown in Figure 1, described heterogeneous body place soft foundation is divided into three districts, i.e. the hydraulic reclamation of the loose sandy soil 2 of the folder silt in the loose sandy soil 1 of the folder mucky soil on upper strata, middle level and lower floor without interlayer sandy soil 3.
The three-dimensional assembly power drain consolidation system of the described heterogeneous body of present embodiment place soft foundation, it comprises drainage system, drainage system comprise be arranged in good penetrability and have the Free water water-head the folder silt loose sandy soil 2 underground horizontal drainage channel 4 and be arranged in the first subsurface grid stratum water flat raft Aquaporin-5 (as shown in Figure 2) of loose sandy soil 1 of the folder mucky soil of poor permeability, underground horizontal drainage channel 4 is connected the gravity pipe well 6 that draws water, gravity draw water pipe well 6 pass the loose sandy soil 2 of folder silt and enter lower floor hydraulic reclamation without in the interlayer sandy soil 3, be provided with the first submersible pump 7 in the draw water shaft bottom of pipe well 6 of gravity; Intersection at the first subsurface grid stratum water flat raft Aquaporin-5 lays connection vertical drainage passage 8, and the shaft bottom of vertical drainage passage 8 is provided with the second submersible pump 14; In addition, be provided with vacuum drainpipe 9 in vertical drainage passage 8, vacuum drainpipe 9 passes vertical drainage passage 8 and is tightly connected with the first subsurface grid stratum water flat raft Aquaporin-5, and vacuum drainpipe 9 is connected with vacuum pump 10.
In the present embodiment, also comprise intending processing the dynamic pressurization system 11 that heterogeneous body place soft foundation applies the dynamic pressurization load.
In the present embodiment, vertical drainage passage 8 is not less than the vertical drainage pipe well of 150mm for hole diameter, its part below stable underground water is bag net filtration pipe with holes, is not less than in addition the medium coarse sand drainage layer of 100mm at the pipe well borehole wall outside backfill thickness of vertical drainage passage 8
In the present embodiment, the depth of burying of underground horizontal drainage channel 4 is the most shallow to be lower than incipient stability groundwater table 12 before the precipitation.
Be provided with the water-level observation hole in intend processing the soft soil body in heterogeneous body place, its peephole aperture is not less than 50mm, and the degree of depth reaches design and falls and be not less than 1m below dark.
In the present embodiment, underground horizontal drainage channel 4 and the first subsurface grid stratum water flat raft Aquaporin-5 are one or more compositions of vacuum filter pipe, plastic draining board, plastic blind-ditch, sandstone french drain, common filter pipe.
Soft foundation three-dimensional assembly power discharging consolidation method in a kind of heterogeneous body place is characterized in that it comprises following steps:
1), subregion is carried out in the heterogeneous body place, the heterogeneous body place is divided into the loose sandy soil 2 of the loose sandy soil 1 that presss from both sides mucky soil, folder silt and hydraulic reclamation without interlayer sandy soil 3.
2), in the loose sandy soil 2 of folder silt, bury underground horizontal drainage channel 4 underground, set again the gravity pipe well 6 that draws water, draw water pipe well 6 of gravity is connected with underground horizontal drainage channel 4, gravity draw water pipe well 6 enter into hydraulic reclamation without interlayer sandy soil 3, arrange the first submersible pump 7 in the draw water shaft bottom of pipe well 6 of gravity, can carry out vertical gravity and draw water; By vertical gravity draw water can make the folder loose sandy soil 2 of silt and hydraulic reclamation become high-intensity homogeneous artificial foundation soil without interlayer sandy soil discharging consolidation 3 within a short period of time;
3), in the loose sandy soil 1 of folder mucky soil, bury the first subsurface grid stratum water flat raft Aquaporin-5 of single or multiple lift underground, lay vertical drainage passage 8 in the first subsurface grid stratum water flat raft Aquaporin-5 intersection, and make vertical drainage passage 8 be communicated with the three-dimensional drainage system of formation with the first subsurface grid stratum water flat raft Aquaporin-5; Arrange the second submersible pump 14 in the shaft bottom of vertical drainage passage 8, can carry out vertical gravity and draw water; By vertical gravity draw water can make the folder loose sandy soil 1 of mucky soil and hydraulic reclamation become high-intensity homogeneous artificial foundation soil without interlayer sandy soil discharging consolidation 3 within a short period of time;
4), at the vertical drainage passage 8 interior vacuum drainpipes 9 that arrange, vacuum drainpipe 9 is connected connection with vacuum pump, can carry out level to vacuum dehydration;
5), draw water fixed by continuous carrying out by vertical gravity and level to the fixed three-dimensional combined water drain that forms of vacuum dehydration, the lowering of the underground water level of intending processing mollisol body structure is funnel curve 13, make and intend processing mollisol body structure discharging consolidation within a short period of time, become high-intensity homogeneous artificial foundation soil.
In the loose sandy soil of the folder silt of poor permeability, because the poor permeability on its top, can the employing level draw water fixed to vacuum dehydration, namely the second subsurface grid stratum water flat raft Aquaporin-5 .1 of single or multiple lift is buried on the top in the loose sandy soil of folder silt underground, lay vertical drainage passage 8 in the second subsurface grid stratum water flat raft Aquaporin-5 .1 intersection, and make vertical drainage passage 8 be communicated with the three-dimensional drainage system of formation with subsurface grid stratum water flat raft Aquaporin-5 .1; Vertical drainage passage 8 and vacuum drainpipe 9 be connected with vacuum pump be connected, can carry out level to vacuum dehydration.
Carry out three-dimensional combined water drain fixed in, carry out dynamic pressurization to intend processing heterogeneous body place soft foundation, the mode of described dynamic pressurization is one or more in strong rammer, vibroroller cmpacting, impact-rolling, the hydraulic pressure compacting.
Utility model mechanism of the present utility model is:
Large tracts of land heterogeneous body place, because the obvious non-homogeneity of the type of the soft soil body, architectural characteristic, clay distribution situation, permeance property, underground water proterties, the discharging consolidation condition is changeable when causing Soft Ground, the sandy soil scope permeate well that particle is thick, underground water are easy to discharge in water-head seepage flow mode under gravity state; And the water in the thin cohesive soil of particle is with the pore water in the clay structure with weakly exist in conjunction with the water form, the soil body penetration poor-performing, wherein water needs just can discharge having under the pressure reduction condition, therefore the discharging consolidation of the saturated soft soil body in heterogeneous body place is different from the homogeneous place, must adopt special combination just can reach the purpose of mollisol discharging consolidation.The utility model adopts vertical gravity to draw water and the mode that combines to vacuum dehydration of level at three-dimensional drainage system, different underground water existence forms is under the different drainage conditions, that is: the Free water in the sand class loose ground of good penetrability is discharged in the gravity mode of drawing water under the water-head condition, be in the cohesive soil hole of poor permeability pore water and weak in conjunction with water with the poor sucking-off of negative pressure of vacuum mode mineralization pressure, reach and make the purpose of intending processing the synchronous discharging consolidation of the soft soil body in heterogeneous body place.
Poor for strengthening saturated mollisol drainage procedure Pore Pressure, adopting vertical gravity to draw water and level applies the dynamic pressurization load to intending processing the soft soil body in vacuum dehydration, improve fast the pore water pressure of saturated mollisol, strengthen its with the pressure differential of pumped well and with negative pressure of vacuum stack and promotion discharging consolidation speed.
As another embodiment in this example, vertical drainage passage 8 can be arranged apart with vacuum drainpipe 9, be that vertical drainage passage 8 independent intersections with first a subsurface grid stratum water flat raft Aquaporin-5 part connect, the intersection of another part of vacuum drainpipe 9 and the first subsurface grid stratum water flat raft Aquaporin-5 connects.
The utility model has adopted the underground water proterties that is applicable in the different soft soil bodys and the discharging consolidation mode of permeance property, superpose dynamic pressurization again and changed the seepage flow discharge condition of underground water in the mollisol, impel the discharging consolidation of heterogeneous body mollisol to carry out synchronously, that a kind for the treatment of effect is good, duration is fast, cost is low, new type power drain consolidation system and method applied widely, be applicable to hydraulic reclamation (backfill) material with sandy soil folder Muddy Bottoms cohesive soil or silt, silt particle is mixed fill out and original beach under have the heterogeneous body place Soft Ground such as the mutual soil layer of silt particle, can overcome the ground that the place non-homogeneity brings and process a difficult problem.Compare the advantage such as have that cost per unit can be saved more than 10%, the duration can shorten more than 20%, settlement after construction and relative settlement are little with the conventional method for processing foundation that is used for this kind place, have good social benefit, economic benefit and wide technology application prospect.
Claims (7)
1. three-dimensional assembly power drain consolidation system of heterogeneous body place soft foundation, it comprises drainage system, it is characterized in that: described drainage system comprises the underground horizontal drainage channel and the subsurface grid stratum water flat raft aquaporin that is arranged in the cohesive soil hole of poor permeability that is arranged in good penetrability and has the sand class loose ground of Free water water-head, described underground horizontal drainage channel is connected the gravity pipe well that draws water, and the draw water shaft bottom of pipe well of described gravity is provided with the first submersible pump; Intersection at described subsurface grid stratum water flat raft aquaporin lays connection vertical drainage passage, be provided with vacuum drainpipe in the described vertical drainage passage, described vacuum drainpipe passes the vertical drainage passage and is tightly connected with subsurface grid stratum water flat raft aquaporin, and vacuum drainpipe is connected with vacuum pump.
2. three-dimensional assembly power drain consolidation system according to claim 1, it is characterized in that: the bottom of described vertical drainage passage is provided with the second submersible pump.
3. three-dimensional assembly power drain consolidation system according to claim 1 is characterized in that: also comprise intending processing the dynamic pressurization system that heterogeneous body place soft foundation applies the dynamic pressurization load.
4. three-dimensional assembly power drain consolidation system according to claim 1, it is characterized in that: described vertical drainage passage is the vertical drainage pipe well that hole diameter is not less than 150mm; Described vertical drainage passage bottom is bag net filtration pipe with holes; The pipe well borehole wall outside backfill thickness of vertical drainage passage is not less than the medium coarse sand drainage layer of 100mm.
5. three-dimensional assembly power drain consolidation system according to claim 1 is characterized in that: the depth of burying of described underground horizontal drainage channel is the most shallow to be lower than incipient stability groundwater table before the precipitation.
6. three-dimensional assembly power drain consolidation system according to claim 1 is characterized in that: be provided with the water-level observation hole in intending the soft soil body in processing heterogeneous body place.
7. three-dimensional assembly power drain consolidation system according to claim 1, it is characterized in that: described underground horizontal drainage channel is one or more compositions of vacuum filter pipe, plastic draining board, plastic blind-ditch, sandstone french drain, common filter pipe; Subsurface grid stratum water flat raft aquaporin is one or more compositions of vacuum filter pipe, plastic draining board, plastic blind-ditch, sandstone french drain, common filter pipe.
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| CN2013201744819U CN203247575U (en) | 2013-04-09 | 2013-04-09 | Stereoscopic combined type dynamic drainage consolidation system used for heterogeneous field soft foundation |
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| CN2013201744819U CN203247575U (en) | 2013-04-09 | 2013-04-09 | Stereoscopic combined type dynamic drainage consolidation system used for heterogeneous field soft foundation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215945A (en) * | 2013-04-09 | 2013-07-24 | 武汉二航路桥特种工程有限责任公司 | Stereo combined power drainage solidifying system and method for soft soil foundation of heterogeneous field |
| CN104846803A (en) * | 2015-04-08 | 2015-08-19 | 浙江海洋学院 | Foundation soil consolidation method |
| CN107780407A (en) * | 2017-10-16 | 2018-03-09 | 中亿丰建设集团股份有限公司 | Secondary precipitation union dynamic consolidation soft base processing method |
| CN107907652A (en) * | 2017-09-27 | 2018-04-13 | 上海岩土工程勘察设计研究院有限公司 | A kind of effective extract content computational methods that underground water is repaired for extraction process |
-
2013
- 2013-04-09 CN CN2013201744819U patent/CN203247575U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215945A (en) * | 2013-04-09 | 2013-07-24 | 武汉二航路桥特种工程有限责任公司 | Stereo combined power drainage solidifying system and method for soft soil foundation of heterogeneous field |
| CN103215945B (en) * | 2013-04-09 | 2016-06-08 | 武汉二航路桥特种工程有限责任公司 | The three-dimensional assembly power drain consolidation system of heterogeneous body place soft soil foundation and method |
| CN104846803A (en) * | 2015-04-08 | 2015-08-19 | 浙江海洋学院 | Foundation soil consolidation method |
| CN107907652A (en) * | 2017-09-27 | 2018-04-13 | 上海岩土工程勘察设计研究院有限公司 | A kind of effective extract content computational methods that underground water is repaired for extraction process |
| CN107907652B (en) * | 2017-09-27 | 2020-04-28 | 上海勘察设计研究院(集团)有限公司 | Effective extraction rate calculation method for groundwater remediation by extraction method |
| CN107780407A (en) * | 2017-10-16 | 2018-03-09 | 中亿丰建设集团股份有限公司 | Secondary precipitation union dynamic consolidation soft base processing method |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20131023 Effective date of abandoning: 20160608 |
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