CN106638556A - Heat energy reinforced vacuum preloading soft foundation drainage structure and drainage method - Google Patents
Heat energy reinforced vacuum preloading soft foundation drainage structure and drainage method Download PDFInfo
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- CN106638556A CN106638556A CN201710028541.9A CN201710028541A CN106638556A CN 106638556 A CN106638556 A CN 106638556A CN 201710028541 A CN201710028541 A CN 201710028541A CN 106638556 A CN106638556 A CN 106638556A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
- E02D2300/0032—Steel; Iron in sheet form, i.e. bent or deformed plate-material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a foundation treatment technology, in particular to a heat energy reinforced vacuum preloading soft foundation drainage structure and a drainage method. A vacuum preloading method is used for forming vacuum negative pressure in a soft foundation, and meanwhile, heat energy is conveyed into the soft foundation through a heat energy injecting system by a certain injecting pressure, so that the temperature of the soft foundation in a certain range with a heat energy injecting well as center is increased. According to the thermodynamic principle, the air pressure is lower, the boiling point of water is lower; the water in holes of soft soil can be boiled more quickly to form free-state water vapor; and gas in the holes is heated to expand to accelerate flowing. As the injecting pressure is higher than the pressure of the holes in the soft soil, the injected heat energy drives the free-state water vapor and the thermal expansion gas to permeate to a drainage system in the soft soil and to extract out from the soft foundation by a vacuumizing device, the foundation is settled, and the purposes of shortening the construction period and accelerating the reinforcing rate are achieved.
Description
Technical field
The present invention relates to foundation treatment technology, more particularly to a kind of heat energy strengthen vacuum pre-pressed soft soil foundation discharge structure and
Water discharge method.
Background technology
The eighties in 20th century, so far vacuum preloading reinforcement of soft soil technology was in the very big development of China, substantial amounts of engineering
It was verified that vacuum method becomes one of effective technology of process Soft Clay Foundation.Vacuum method is usually by draining
System, compression system and the part of sealing system three collectively constitute.Vacuum method is first to set on the soft soil foundation to be reinforced
The plastic draining board or sand wick of one determining deviation, then lays on the ground certain thickness sand bedding course, then will be air-locked
Thin film is laid on sand bedding course, by means of the pipeline being embedded in sand bedding course, by vacuum extractor by the gas in the soil body under film
Body and water are extracted out, enable soil body discharging consolidation, reach the purpose of reinforcing.The method is, by atm difference, to be formed in the soil body
Negative vacuum pressure, makes the water in the soil body gentle to vertical drain seepage flow, so as to improve soil body compactness, strengthens the soil body strong
Degree.However, vacuum method still suffers from several weak points when saturation soft clay is processed：1st, vacuum method can apply
Peak load there was only 95kPa or so, such as need high again, then must be used in combination with other soft base processing methods；2nd, due to saturation
Soft clay permeability is low, and the vacuum method construction period is longer, general up to 3～24 months；3rd, vacuum is in transmittance process
Affected by sand bedding course and lost larger, be only capable of forming the thick crust layers of 1m in earth's surface, deep weak soil is unable to reach design requirement
Consolidation effect；4th, plastic draining board top layer filter membrane easily receives surrounding fine grained silting so as to which water passing capacity weakens, vacuum transmission
It is obstructed, so as to cause vacuum method later stage treatment effeciency to reduce；5th, affected larger by construction technology quality control, soil is softer,
It is then easier to produce crack in stabilization zone boundary, cause sealing system to fail.
The content of the invention
An object of the present invention is to provide a kind of heat energy to strengthen vacuum pre-pressed soft soil foundation discharge structure, and the structure can
On a large scale interior raising soft soil foundation temperature, increases the permeability of water and gas in deep soil, with low engineering cost, work of constructing
Skill is simple, the good advantage of discharging consolidation effect.
To achieve these goals, the technical scheme taken is：A kind of heat energy strengthens vacuum pre-pressed soft soil foundation draining
Structure, it is characterised in that：Including heat energy injected system, drainage system and sealing system, the heat energy injected system is included in soft
The some evenly distributed heat energy injection well that is drilled with soil base, the heat energy ascending pipe in heat energy injection well, it is connected to
The heat energy injection pump of heat energy ascending pipe rear end and heat energy produce equipment, and the drainage system includes vaccum-pumping equipment and draining pad
Layer, vaccum-pumping equipment is including the plastic draining board being distributed between adjacent heat energy injection well, positioned at plastic draining board top
Evacuation chimney filter, the evacuation that evacuation chimney filter is linked together supervisor, the vacuum pumping pump that rear end is responsible for positioned at evacuation, institute
State drainage blanket and be arranged on need soft soil foundation surface to be processed, including the working cushion layer and horizontal row water cushion of bottom-up distribution
Layer, the sealing system includes the diaphragm seal being distributed in above horizontal drainage bed course and the sealing for being distributed in drainage system periphery
Ditch, diaphragm seal is extended to along sealing ditch bottom, and evacuation supervisor is provided with membrane device with diaphragm seal contact site；The evacuation
Supervisor and evacuation chimney filter are horizontally embedded in horizontal drainage bed course, and the tube wall of the heat energy ascending pipe is provided with staggered
Dispersion hole, the heat energy injection well arranges pillar during being drilled with the borehole wall, pacifies between heat energy ascending pipe and heat energy injection pump
Dress closes well device, and the top of heat energy injection well arranges the packer of fixed heat energy ascending pipe.
Further, the pillar of the heat energy injection well is rolled using 10mm steel plates, and pillar wall is provided with dispersion hole, shield
Bottom of the tube is provided with the bottom closure of cement mortar cast.
Further, construction monitoring equipment is laid with the soft soil foundation, construction monitoring equipment includes：Temperature sensing
Device, pressure vacuum gauge, single point settlement gage and underground level gauge.
Further, the heat energy ascending pipe tubing adopts high temperature resistant stainless steel pipe, polyfluortetraethylene pipe, plain concrete
One or more in pipe, concrete reinforced pipe.
Heat energy of the present invention strengthens vacuum pre-pressed soft soil foundation discharge structure, by heat energy injection well with certain note
Enter pressure and convey heat energy in soft soil foundation, so that a range of soft soil foundation temperature centered on heat energy injection well
Raise, increase the permeability of water and gas in deep soil, eliminate differential settlement and accelerate Soft Soil Consolidation speed.
Another object of the present invention is to providing a kind of heat energy strengthens vacuum pre-pressed soft soil foundation water discharge method, the method exists
Increase heat energy implantation step, and then interior raising soft soil foundation temperature on a large scale on the basis of conventional vacuum preloading method, increase deep
The permeability of water and gas in the soil body, eliminates differential settlement and accelerates Soft Soil Consolidation speed.
A kind of heat energy strengthens vacuum pre-pressed soft soil foundation water discharge method and specifically includes following steps：
One）Preparation of construction：The barrier of earth's surface, underground and periphery is removed, stabilization zone place is tentatively flattened；
Two）Heat energy injected system is constructed：Heat energy injection well is drilled with to desired depth, drilling well is made in soft soil foundation using boring machine
Inject into well the injection of right angle setting heat energy in heat energy to shaft bottom injection cement mortar cast bottom closure using conduit after the completion of industry
Pipe, and heat energy ascending pipe is fixed in heat energy injection well using packer, while playing the purpose of sealing wellhead；Heat energy injects
The rear end connection heat energy injection pump of pipe, while install that between heat energy ascending pipe and heat energy injection pump well device is closed, heat energy injection
Pump rear end produces equipment and is connected with heat energy；
Three）Drainage system is constructed and construction monitoring implantation of device：On stabilization zone surface chaste tree basketry or geotextiles are laid as work pads
Layer, using mechanical system or manual type the plastic draining board as vertical drain is set between adjacent heat energy injection well,
Construction monitoring equipment is laid in soft soil foundation, horizontal drainage bed course is laid on working cushion layer, in the middle of horizontal drainage bed course
Level laying evacuation supervisor, evacuation chimney filter, evacuation supervisor and evacuation chimney filter are directly connected to, evacuation chimney filter and plastics
Draining board is directly connected to, and evacuation supervisor be connected with vacuum pumping pump, and horizontal drainage course preferably adopts medium coarse sand；
Four）Sealing system is constructed：Sealing ditch is excavated along reinforced soft soil ground area periphery, is sealed in the laying of horizontal drainage mat surface
Film, while installing evacuation supervisor's membrane device, in diaphragm seal periphery embedment sealing ditch, covers thereon cohesive soil and is layered pressure
It is real；
Five）Evacuation：Open vacuum extractor and carry out continuous evacuation, it is ensured that constant 90kPa negative pressure of vacuum is formed under film；
Six）Injection heat energy and monitoring：Open vacuum means to postpone, open heat energy and produce equipment and heat energy injection pump, by heat energy
Injected system injects heat energy in soft soil foundation, and using construction monitoring equipment to work progress in various situations carry out continuously
Monitoring.
Further, step 6）Inject in middle soft soil foundation after heat energy, keep soil body mean temperature at 55-65 DEG C, if
Soil temperature rising is too fast, can stop injecting heat energy and closing heat energy injection well, continues when soil temperature drops to 55-65 DEG C
Injection heat energy.
Further, the heat energy of the heat energy ascending pipe injection is high temperature air, and high temperature air temperature is more than 80 DEG C, heat energy
High 1～the 3MPa of pore water pressure in the injection pressure ratio soft soil foundation of injection well, heat injection speed is 3～5m3/h。
This method forms the negative pressure of vacuum of about 90kPa first with vacuum method in soft soil foundation, then using heat
Energy injected system conveys heat energy with certain injection pressure in soft soil foundation, so that certain centered on heat energy injection well
In the range of soft soil foundation temperature raise.According to thermodynamic principles, air pressure is lower, water boiling point is lower, the pore water in weak soil
Can more quickly seethe with excitement and formed free state water vapour, the gas in hole then expanded by heating and accelerate flowing.In weak soil body
The water vapour and inflation gas of free state are ordered about to drainage system seepage flow, and soft soil foundation is extracted out by drainage system, ground is sent out
Raw sedimentation, reaches the reduction of erection time, improves the purpose for reinforcing speed.
Description of the drawings
Fig. 1 is the principle schematic that a kind of heat energy of the present invention strengthens vacuum pre-pressed soft soil foundation discharge structure.
Symbol description in figure：1 soft soil foundation；2 heat energy injection wells；3 heat energy produce equipment；4 heat energy injection pumps；5 heat energy are noted
Enter pipe；6 packers；7 close well device；8 working cushion layers；9 plastic draining boards；10 construction monitoring equipment；11 horizontal drainage bed courses；12
Evacuation is responsible for；13 evacuation chimney filters；14 sealing ditches；15 diaphragm seals；16 membrane devices；17 vacuum pumping pumps；18 bottoms block.
Specific embodiment
Below in conjunction with the accompanying drawings technical scheme is described further with specific embodiment.
As shown in figure 1, the present invention provides a kind of heat energy strengthens vacuum pre-pressed soft soil foundation discharge structure, including heat energy injection
System, drainage system and sealing system, the heat energy injected system is included in soft soil foundation 1 be drilled with some evenly distributed
Heat energy injection well 2, the heat energy ascending pipe 5 in heat energy injection well, the heat energy injection pump 4 for being connected to heat energy ascending pipe rear end
Equipment 3 is produced with heat energy, the drainage system includes vaccum-pumping equipment and drainage blanket, and vaccum-pumping equipment is adjacent including being distributed in
Heat energy injection well between plastic draining board 9, the evacuation chimney filter 13 positioned at plastic draining board top, by evacuation chimney filter connect
The evacuation supervisor 12 being connected together, the vacuum pumping pump 17 that rear end is responsible for positioned at evacuation, the drainage blanket is arranged on needs
The soft soil foundation surface of process, including the working cushion layer 8 and horizontal drainage bed course 11 of bottom-up distribution, the sealing system bag
The diaphragm seal 15 being distributed in above horizontal drainage bed course and the sealing ditch 14 for being distributed in drainage system periphery are included, diaphragm seal is extended to
Along sealing ditch bottom, evacuation supervisor is provided with membrane device 16 with diaphragm seal contact site；The evacuation supervisor and evacuation
Chimney filter is horizontally embedded in horizontal drainage bed course, and the tube wall of the heat energy ascending pipe is provided with staggered dispersion hole, described
Heat energy injection well arranges pillar during being drilled with the borehole wall, installs between heat energy ascending pipe and heat energy injection pump and closes well device 7,
The top of heat energy injection well arranges the packer 6 of fixed heat energy ascending pipe, is to prevent the borehole wall from collapsing in heat energy injection well drilling process
Collapse, pillar is transferred simultaneously in drilling well, the pillar is rolled using 10mm steel plates, and pillar outer wall is provided with dispersion hole.Pillar bottom
Portion is provided with the bottom closure 18 of cement mortar cast, and construction monitoring equipment 10, construction monitoring equipment are laid with the soft soil foundation
Including：Temperature sensor, pressure vacuum gauge, single point settlement gage and underground level gauge.The heat energy ascending pipe tubing adopts resistance to height
One or more in warm stainless steel tube, polyfluortetraethylene pipe, plain concrete pipe, concrete reinforced pipe.
In Specific construction, hydrogeologic data is investigated first, check electric power system and construction material quality, with clearing
The barrier of table, underground and periphery, measures ground elemental height, in this way rectangle place, it should be ensured that the advance raising in middle part some,
30～50cm of filled slope, the gradient 1%～2%, are tentatively flattened to reinforced soft soil ground area place.Then in soft soil foundation 1
In be drilled with heat energy injection well 2 to desired depth according to design pitch, the right angle setting heat energy ascending pipe 5 in heat energy injection well 2, and
Heat energy ascending pipe 5 is fixed in heat energy injection well 2 using packer 6, while playing the purpose of sealing wellhead.Described heat energy
The arrival end of ascending pipe 5 is connected with the port of export of heat energy injection pump 4, while in the arrival end of heat energy ascending pipe 5 and heat energy injection pump 4
Install between the port of export and close well device 7, the controllable heat energy injection rate when the rising of soft soil foundation temperature is too fast, described heat energy note
Enter pump intake end to be connected with heat energy generation equipment 3, complete the installation of heat energy injected system.
Further, chaste tree basketry or geotextiles are laid as working cushion layer 8 on stabilization zone surface, laying chaste tree basketry is appropriate to the occasion by place
Surrounding is progressively laid to center position, and geotextiles are appropriate to the occasion is progressively laid into area from side for laying.Using mechanical system or
Manual type sets plastic draining board 9 in adjacent heat energy injection well spacing according to square or equilateral triangle arrangement, used as vertical
In line aquaporin, the spacing of plastic draining board is preferably 0.7～1.5m.After the completion of plastic draining board sets, the cloth in soft soil foundation
Facility work monitoring device 10, construction monitoring equipment 10 includes temperature sensor, pressure vacuum gauge, single point settlement gage and level of ground water
Meter, for monitoring soil temperature, vacuum pressure, ground settlement and level of ground water etc..Horizontal drainage is laid on working cushion layer
Bed course 11, course is preferably not more than 5% medium coarse sand using clay content, and its infiltration coefficient is not preferably less than 5 × 10-3cm/s.In level
Drainage blanket by-level laying evacuation supervisor 12, evacuation chimney filter 13, used as horizontal drainage passage, evacuation is responsible for 12 Hes
Evacuation chimney filter 13 is directly connected to, and evacuation chimney filter 13 is directly connected to plastic draining board 9, and evacuation is responsible for and vacuum pumping pump phase
Connection, completes drainage system construction and construction monitoring implantation of device.
Further, sealing system is laid：Sealing ditch 14 is excavated along reinforced soft soil ground area periphery, in horizontal drainage bed course
Two-layer diaphragm seal 15 is laid on surface, and the diaphragm seal length of side should be greater than more than stabilization zone length of side 4m, while installing evacuation supervisor's membrane
Device 16.Embedment after the completion of diaphragm seal 15 is laid is sealed in ditch 14, and cohesive soil and compaction in layers are covered thereon.As in deep soil
With the presence of pervious bed, need to take the deep encapsulating method such as double mixing pile to block pervious bed, mixing pile diameter is not preferably less than
700mm。
Open vacuum pumping pump 17 and carry out continuous evacuation, it is ensured that constant 90kPa negative pressure of vacuum, evacuation are formed under film
The power of pump 17 not preferably less than 7.5kW, often covering vacuum pumping pump 17 can bear area for 500～600m2, then it is by heat energy injection
Unite in soft soil foundation 1 inject high temperature air as heat energy, and to work progress in various situations continuously monitor.Keep
Soil body mean temperature is at 55-65 DEG C or so, if soil temperature rising is too fast, can stop injecting heat energy and by closing well device 7
Heat energy injection well 2 is closed, continues to inject heat energy when soil temperature drops to 55-65 DEG C.High temperature air temperature is more than 80 DEG C, heat
High 1～the 3MPa of pore water pressure in the injection pressure ratio soft soil foundation of energy injection well, charge velocity is 3～5m3/h.The note
Enter the total amount of heat energy, according to soft soil foundation depth, stabilization zone area and reinforcing speed determine.After considering various heat-energy losses, can
Mean temperature of the soft soil foundation after heat energy transmits realization in the range of the radius 10m centered on heat energy injection well is set to be increased to 60
DEG C and more than.
The present invention operation principle be：The vacuum that about 90kPa is formed in soft soil foundation first with vacuum method is born
Pressure, while heat energy is conveyed in soft soil foundation with certain injection pressure by heat energy injected system, so that with heat energy injection
A range of soft soil foundation temperature centered on well is raised.According to thermodynamic principles, air pressure is lower, water boiling point is lower,
Pore water in weak soil can more quickly seethe with excitement and form the water vapour of free state, the gas in hole then expanded by heating and accelerate
Flowing.Due to injecting pressure more than the pore pressure in weak soil, the heat energy for being injected orders about the water of free state in weak soil body and steams
Vapour and inflation gas are evacuated device extraction soft soil foundation to drainage system seepage flow, and ground is settled, and reaches shortening
Duration, the purpose for improving reinforcing speed.
The above, is only highly preferred embodiment of the present invention, and any pro forma restriction is not made to the present invention, is appointed
What those of ordinary skill in the art, under without departing from technical solution of the present invention ambit, using in the method for the disclosure above
Appearance makes many possible variations and modification to technical solution of the present invention, belongs to the scope of claims protection.
Claims (7)
1. a kind of heat energy strengthens vacuum pre-pressed soft soil foundation discharge structure, it is characterised in that：Including heat energy injected system, draining system
System and sealing system, the heat energy injected system be included in be drilled with soft soil foundation some evenly distributed heat energy injection well,
Heat energy ascending pipe in heat energy injection well, the heat energy injection pump for being connected to heat energy ascending pipe rear end and heat energy are produced and set
Standby, the drainage system includes vaccum-pumping equipment and drainage blanket, and vaccum-pumping equipment includes being distributed in adjacent heat energy injection well
Between plastic draining board, the evacuation chimney filter positioned at plastic draining board top, take out true by what evacuation chimney filter linked together
Sky supervisor, the vacuum pumping pump that rear end is responsible for positioned at evacuation, the drainage blanket is arranged on needs soft soil foundation surface to be processed,
Working cushion layer and horizontal drainage bed course including bottom-up distribution, the sealing system includes being distributed on horizontal drainage bed course
The diaphragm seal in face and be distributed in the sealing ditch of drainage system periphery, diaphragm seal is extended to along sealing ditch bottom, evacuation supervisor with
Diaphragm seal contact site is provided with membrane device；The evacuation supervisor and evacuation chimney filter are horizontally embedded in horizontal drainage bed course
In, the tube wall of the heat energy ascending pipe is provided with staggered dispersion hole, and the heat energy injection well is during being drilled with well
Wall arranges pillar, installs between heat energy ascending pipe and heat energy injection pump and closes well device, and the top of heat energy injection well arranges fixed heat
The packer of energy ascending pipe.
2. a kind of heat energy according to claim 1 strengthens vacuum pre-pressed soft soil foundation discharge structure, it is characterised in that：It is described
The pillar of heat energy injection well is rolled using 10mm steel plates, and pillar bottom is provided with the bottom closure of cement mortar cast.
3. a kind of heat energy according to claim 1 strengthens vacuum pre-pressed soft soil foundation discharge structure, it is characterised in that：It is described
Construction monitoring equipment is laid with soft soil foundation, construction monitoring equipment includes：Temperature sensor, pressure vacuum gauge, single-point sedimentation
Meter and underground level gauge.
4. a kind of heat energy according to claim 1 strengthens vacuum pre-pressed soft soil foundation discharge structure, it is characterised in that：It is described
Heat energy ascending pipe tubing is using the one kind in high temperature resistant stainless steel pipe, polyfluortetraethylene pipe, plain concrete pipe, concrete reinforced pipe
Or it is several.
5. a kind of heat energy strengthens vacuum pre-pressed soft soil foundation water discharge method, it is characterised in that：Specifically include following steps：
One）Preparation of construction：The barrier of earth's surface, underground and periphery is removed, stabilization zone place is tentatively flattened；
Two）Heat energy injected system is constructed：Heat energy injection well is drilled with to desired depth, drilling well is made in soft soil foundation using boring machine
Inject into well the injection of right angle setting heat energy in heat energy to shaft bottom injection cement mortar cast bottom closure using conduit after the completion of industry
Pipe, and heat energy ascending pipe is fixed in heat energy injection well using packer, while playing the purpose of sealing wellhead；Heat energy injects
The rear end connection heat energy injection pump of pipe, while install that between heat energy ascending pipe and heat energy injection pump well device is closed, heat energy injection
Pump rear end produces equipment and is connected with heat energy；
Three）Drainage system is constructed and construction monitoring implantation of device：On stabilization zone surface chaste tree basketry or geotextiles are laid as work pads
Layer, using mechanical system or manual type the plastic draining board as vertical drain is set between adjacent heat energy injection well,
Construction monitoring equipment is laid in soft soil foundation, horizontal drainage bed course is laid on working cushion layer, in the middle of horizontal drainage bed course
Level laying evacuation supervisor, evacuation chimney filter, evacuation supervisor and evacuation chimney filter are directly connected to, evacuation chimney filter and plastics
Draining board is directly connected to, and evacuation supervisor be connected with vacuum pumping pump, and horizontal drainage course preferably adopts medium coarse sand；
Four）Sealing system is constructed：Sealing ditch is excavated along reinforced soft soil ground area periphery, is sealed in the laying of horizontal drainage mat surface
Film, while installing evacuation supervisor's membrane device, in diaphragm seal periphery embedment sealing ditch, covers thereon cohesive soil and is layered pressure
It is real；
Five）Evacuation：Open vacuum extractor and carry out continuous evacuation, it is ensured that constant 90kPa negative pressure of vacuum is formed under film；
Six）Injection heat energy and monitoring：Open vacuum means to postpone, open heat energy and produce equipment and heat energy injection pump, by heat energy
Injected system injects heat energy in soft soil foundation, and using construction monitoring equipment to work progress in various situations carry out continuously
Monitoring.
6. a kind of heat energy according to claim 5 strengthens vacuum pre-pressed soft soil foundation water discharge method, it is characterised in that：Step
Six）Inject in middle soft soil foundation after heat energy, keep soil body mean temperature at 55-65 DEG C, if soil temperature rising is too fast, can stop
Only inject heat energy and close heat energy injection well, continue to inject heat energy when soil temperature drops to 55-65 DEG C.
7. a kind of heat energy according to claim 5 strengthens vacuum pre-pressed soft soil foundation water discharge method, it is characterised in that：It is described
The heat energy of heat energy ascending pipe injection is high temperature air, and high temperature air temperature is more than 80 DEG C, and the injection pressure ratio of heat energy injection well is soft
High 1～the 3MPa of pore water pressure in soil base, heat injection speed is 3～5m3/h。
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|---|---|---|---|---|
| CN107338782A (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 processing method of vacuum pre-pressed joint ground heating reinforcing soft ground |
| CN107338784A (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 basement process system of vacuum pre-pressed joint ground heating |
| CN107524137A (en) * | 2017-09-01 | 2017-12-29 | 陕西华路达公路勘察设计有限公司 | A kind of construction technology of deep soft soil treatment |
| CN107829425A (en) * | 2017-11-06 | 2018-03-23 | 汤连生 | One kind tool circulation air emptying function column type forced-ventilated water pipe, device and method |
| CN109736293A (en) * | 2018-12-25 | 2019-05-10 | 浙江华东工程咨询有限公司 | The intelligent information makeup of pressurization heat treatment soft soil foundation is set and method for processing foundation |
| CN110761267A (en) * | 2019-11-18 | 2020-02-07 | 清华大学 | Rapid prepressing and consolidating device and method for underwater soft soil foundation |
| CN111691394A (en) * | 2020-05-19 | 2020-09-22 | 宁波大学 | Pile end soil body reinforcing system |
| CN112281807A (en) * | 2020-09-27 | 2021-01-29 | 江苏鑫泰岩土科技有限公司 | Pressurizing heat-sensitive vaporization phase-change consolidation method and heat-desensitization intermittent evaporator thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107338782A (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 processing method of vacuum pre-pressed joint ground heating reinforcing soft ground |
| CN107338784A (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 basement process system of vacuum pre-pressed joint ground heating |
| CN107524137A (en) * | 2017-09-01 | 2017-12-29 | 陕西华路达公路勘察设计有限公司 | A kind of construction technology of deep soft soil treatment |
| CN107524137B (en) * | 2017-09-01 | 2019-08-02 | 陕西华路达公路勘察设计有限公司 | A kind of construction technology of deep soft soil treatment |
| CN107829425A (en) * | 2017-11-06 | 2018-03-23 | 汤连生 | One kind tool circulation air emptying function column type forced-ventilated water pipe, device and method |
| CN107829425B (en) * | 2017-11-06 | 2023-12-29 | 汤连生 | Device and method for soft foundation drainage consolidation |
| CN109736293A (en) * | 2018-12-25 | 2019-05-10 | 浙江华东工程咨询有限公司 | The intelligent information makeup of pressurization heat treatment soft soil foundation is set and method for processing foundation |
| CN110761267A (en) * | 2019-11-18 | 2020-02-07 | 清华大学 | Rapid prepressing and consolidating device and method for underwater soft soil foundation |
| CN111691394A (en) * | 2020-05-19 | 2020-09-22 | 宁波大学 | Pile end soil body reinforcing system |
| CN112281807A (en) * | 2020-09-27 | 2021-01-29 | 江苏鑫泰岩土科技有限公司 | Pressurizing heat-sensitive vaporization phase-change consolidation method and heat-desensitization intermittent evaporator thereof |
| CN112281807B (en) * | 2020-09-27 | 2022-07-22 | 江苏鑫泰岩土科技有限公司 | Pressurizing heat-sensitive vaporization phase-change consolidation method and heat-desensitization intermittent evaporator thereof |
| CN112502130A (en) * | 2020-11-03 | 2021-03-16 | 广州市设计院 | Soft soil foundation treatment system and soft soil foundation treatment method |
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Application publication date: 20170510 |