CN112921950A - Method for treating soft soil foundation by using solar energy prepressing combined heating method - Google Patents
Method for treating soft soil foundation by using solar energy prepressing combined heating method Download PDFInfo
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- CN112921950A CN112921950A CN202110119331.7A CN202110119331A CN112921950A CN 112921950 A CN112921950 A CN 112921950A CN 202110119331 A CN202110119331 A CN 202110119331A CN 112921950 A CN112921950 A CN 112921950A
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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
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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
- E02D2300/0035—Aluminium
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- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention provides a method for treating a soft soil foundation by utilizing a solar energy prepressing combined heating method, which comprises the following steps: A. well arrangement: arranging well points according to design requirements, drilling or flushing a well at the well points, arranging well pipes with meshes, arranging three adjacent well points in an equilateral triangle, and paving sand bags on the surface of a soft soil foundation to form a sand cushion layer; B. placing: selecting a U-shaped exchange tube with proper length according to the depth of a well point, assembling the U-shaped exchange tube and a heat exchange tube together, and placing a heating plate of a treatment device on a sand cushion layer; C. and (3) counterweight: placing a balancing weight on the object placing table according to the design requirement; D. heating: heated water is conveyed to the U-shaped exchange pipe through a solar heat collector or a heating water tank in the treatment device, and cold and heat exchange is carried out between the U-shaped exchange pipe and the well pipe; E. draining: and heating the soft soil foundation to convert the water content of the soft soil foundation from a liquid state to a gas state, and collecting the gas water from the soft soil foundation to the sand cushion layer.
Description
Technical Field
The invention belongs to the technical field of buildings, and relates to a method for treating a soft soil foundation by utilizing a solar energy prepressing combined heating method.
Background
The definition of the highway industry standard in China on the soft soil foundation refers to a soft soil layer with low strength and high compression amount, and most of the soft soil layer contains certain organic substances. Because the soft soil has low strength and large sinking and hiding amount, great harm is often brought to road engineering, and if the treatment is improper, great influence is caused to the construction and the use of a road. The soft soil is fine soil deposited on coastal areas, lakes and marshes, valley areas and beaches and having high natural water content, large pore ratio, high compressibility and low shear strength. The high-viscosity natural water-content concrete has the characteristics of high natural water content, large natural pore ratio, high compressibility, low shear strength, small consolidation coefficient, long consolidation time, high sensitivity, high disturbance, poor water permeability, complex soil layer distribution, large difference of physical and mechanical properties among layers and the like.
After retrieval, for example, chinese patent document discloses a fast "high vacuum densification" soft foundation treatment method [ application No.: 201010125670.8, respectively; publication No.: CN 101775795a ]. The method for treating the soft foundation by rapid high-vacuum densification is characterized by comprising the following steps: the first step is as follows: inserting a plastic drainage plate wrapped by geotextile into a soft foundation to be treated, wherein the upper end of the plastic drainage plate is closed by a cover, and the cover is provided with an interface for connecting a hose and is connected to a vacuum-pumping system through the hose; the second step is that: covering the interface of the hose and the cover at the upper end of the plastic drainage plate by clay to ensure that the interface is compact and airtight; the third step: and starting a vacuumizing system, and carrying out cross densification construction combining variable energy dynamic compaction with vacuumizing for multiple times.
The method has high requirement on environment and high treatment difficulty, so that the method for treating the soft soil foundation by utilizing the solar energy pre-pressing and heating combined method is necessary.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for treating a soft soil foundation by utilizing a solar energy prepressing combined heating method, which has the characteristic of good foundation treatment effect.
The purpose of the invention can be realized by the following technical scheme: a method for treating a soft soil foundation by utilizing a solar energy prepressing combined heating method is characterized by comprising the following steps:
A. well arrangement: arranging well points according to design requirements, drilling or flushing a well at the well points, arranging well pipes with meshes, arranging three adjacent well points in an equilateral triangle, and paving sand bags on the surface of a soft soil foundation to form a sand cushion layer;
B. placing: selecting a U-shaped exchange tube with proper length according to the depth of a well point, assembling the U-shaped exchange tube and a heat exchange tube together, and placing a heating plate of a treatment device on a sand cushion layer;
C. and (3) counterweight: unfolding a storage table in the processing device, and placing a balancing weight on the storage table according to design requirements;
D. heating: heated water is conveyed to the U-shaped exchange pipe through a solar heat collector or a heating water tank in the treatment device, and cold and heat exchange is carried out between the U-shaped exchange pipe and the well pipe;
E. draining: the soft soil foundation is heated to ensure that the moisture of the soft soil foundation is changed from liquid state to gas state, and the gas water is collected to the sand cushion layer from the soft soil foundation, thereby reducing the water content of the soft soil foundation and enhancing the strength of the soft soil foundation.
The processing apparatus includes hot plate and heat supply source, the hot plate include upper plate and hypoplastron, upper plate and hypoplastron are together fixed through a plurality of spliced poles, are fixed with hot exchange pipe on the hypoplastron, hot exchange pipe one end is the water inlet, the hot exchange pipe other end be the delivery port, water inlet and delivery port be linked together through pipeline and heat supply source, the heat supply source set up on the upper plate, hypoplastron lower part department still be provided with a plurality of U type exchange pipes perpendicularly, U type exchange pipe and hot exchange pipe intercommunication, and U type exchange pipe links together through detachable construction with hot exchange pipe.
Adopt this structure, place this processing apparatus on the sand bed course of this soft ground, insert the sand well of soft ground with U type exchange pipe in, the hot plate can extrude soft ground downwards, through the heat supply source with the heat through hot exchange pipe carry U type exchange pipe in, under the pressure effect of device itself and the effect of the improvement of ground temperature, can make the water in the soft ground turn into the gaseous state, discharge with higher speed for the soil body concreties, excellent in use effect.
The U-shaped exchange tubes and the heat exchange tubes are connected together through a detachable structure, so that the U-shaped exchange tubes can be selected and used suitably according to different depths of the sand well.
The heat exchange tubes are arranged on the lower plate in a serpentine shape, the heat exchange tubes are in contact with the lower plate, and the lower plate is made of aluminum materials.
By adopting the structure, the heat exchange tube can quickly transfer heat to the soft foundation, and the heat conduction is quick.
The solar heat collector is used as the heat supply source, the body of the solar heat collector can be detachably fixed on the upper plate, the water outlet pipe of the solar heat collector is communicated with the water inlet through the first connecting pipe, the conveying pump is arranged at the position of the water inlet, and the water inlet pipe of the solar heat collector is communicated with the water outlet through the second connecting pipe.
By adopting the structure, the heat in the environment can be collected through the solar heat collector on a sunny day, so that resources such as electric energy and the like do not need to be consumed additionally, and the hot water is continuously conveyed to the heat exchange pipe through the conveying pump after the water is heated and warmed by the obtained heat through the solar heat collector.
The utility model discloses a heating water tank, including water inlet, water outlet, foretell connecting pipe two is connected on one of them port of three-way valve two, the upper plate on still can dismantle and be provided with heating water tank, heating water tank in be provided with electric heating pipe, heating water tank's advance water piping connection on another port of three-way valve one, heating water tank's outlet pipe connect on another port of three-way valve two.
By adopting the structure, under the bad weather such as cloudy days, the water in the heating water tank is heated and heated by the electric heating pipe, the whole heat exchange pipe is ensured to be always provided with hot water, and the whole device can normally operate.
Detachable construction includes adapter sleeve, sealing washer and a plurality of compression bar, hot exchange pipe on have a plurality of connecting portions of downward convex, and the cross-section of connecting portion is the shape of falling T, sealing washer sliding sleeve establish on connecting portion, and the cross-section of sealing washer is the shape of falling T, the adapter sleeve establish on connecting portion, link to each other through the screw thread between adapter sleeve and the U type switching tube tip, connecting portion on still install supplementary ring, compression bar middle part and supplementary ring rotate to be connected, compression bar upper end pass through wire rope and adapter sleeve and link to each other, and the compression bar lower extreme can offset with the sealing washer lower part and lean on.
By adopting the structure, the U-shaped exchange tube end is connected with the connecting sleeve through threads, the connecting sleeve is driven by the U-shaped exchange tube to move downwards under the action of the gravity of the U-shaped exchange tube, and the sealing ring can move upwards under the action of the pressing rod, so that the sealing performance between the U-shaped exchange tube and the connecting part can be ensured, and the sealing is reliable.
The utility model discloses a set up the platform, including upper plate, connecting rod, thing platform, lower plate, upper plate end portion still articulates there is the thing platform of putting, put and still have the connecting rod supporting component who is used for supporting between thing platform middle part and the upper plate, the thing platform lateral part of putting install the gyro wheel, the thing bench of putting still be fixed with the bolt, hypoplastron end portion be fixed with bolt matched with positioning seat.
By adopting the structure, the counter weight block can be placed on the object placing table as required, so that the whole device has enough downward pressure; simultaneously, when needs transport, through will putting thing platform downward swing, insert the bolt in the positioning seat, can conveniently remove whole device through the gyro wheel.
The heating water tank comprises a left box body and a right box body, a rail is horizontally fixed on the upper plate, the left box body and the right box body are arranged on the rail in a sliding mode, the left box body and the right box body are communicated through a telescopic elastic tube, a mounting plate is further fixed in the middle of the rail, an auxiliary motor is fixed on the mounting plate, an output shaft of the auxiliary motor is vertically upward, the vertical end portion of the auxiliary motor is connected with a driving disc, an uneven annular groove is formed in the driving disc, a left guide pillar matched with the annular groove is installed on the lower portion of the left box body, a right guide pillar matched with the annular groove is installed on the lower portion of the right box body, a linkage pillar is further fixed on the driving disc, and the linkage pillar can abut against the lower portion of the telescopic elastic tube.
Adopt this structure, through designing into movable structures such as left box and right box with heating water tank, drive the driving-disc through auxiliary motor and rotate, the driving-disc can make left box and right box rock about to can make the temperature in the heating water tank keep the uniformity, stirring effect is good.
Compared with the prior art, the method for treating the soft soil foundation by utilizing the solar energy prepressing combined heating method has the following advantages: by adopting the method, the drainage consolidation of the soil body can be accelerated, the requirement on the use environment of the equipment is low, the equipment can compact the soft soil foundation, and the foundation treatment effect is good.
Drawings
FIG. 1 is a schematic representation of the steps of the process of the present invention.
FIG. 2 is a schematic view of the placement of well sites in the present invention.
Fig. 3 is a schematic plan view of the processing apparatus.
FIG. 4 is a schematic perspective view of the heat exchange tube in the treatment apparatus.
Fig. 5 is a schematic plan view of the heating plate in the processing apparatus.
Fig. 6 is a schematic plan view of a detachable structure in the processing apparatus.
Fig. 7 is a schematic plan view of a heating water tank in the treatment apparatus.
Fig. 8 is a schematic plan view of a drive plate in the processing apparatus.
In the figure, 1, a heating plate; 1a, an upper plate; 1b, a lower plate; 1c, connecting columns; 2. a second three-way valve; 3. a heat exchange tube; 3a, a connecting part; 4. a water outlet pipe; 5. a second connecting pipe; 6. a solar heat collector; 7. heating the water tank; 7a, a left box body; 7b, a right box body; 7c, a telescopic elastic cylinder; 8. a first connecting pipe; 9. a water inlet pipe; 10. a first three-way valve; 11. a delivery pump; 12. a U-shaped exchange tube; 13. a roller; 14. a placing table; 15. a bolt; 16. a connecting rod support assembly; 17. positioning seats; 18. connecting sleeves; 19. a wire rope; 20. a hold down bar; 21. an auxiliary ring; 22. a seal ring; 23. a left guide post; 24. a linkage column; 25. an auxiliary motor; 26. a drive disc; 26a, an annular groove; 27. a right guide post; 28. a track.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-2, the method for treating soft soil foundation by using solar energy pre-pressing and heating method comprises the following steps:
A. well arrangement: arranging well points according to design requirements, drilling or flushing a well at the well points, arranging well pipes with meshes, arranging three adjacent well points in an equilateral triangle, and paving sand bags on the surface of a soft soil foundation to form a sand cushion layer;
B. placing: selecting a U-shaped exchange tube with proper length according to the depth of a well point, assembling the U-shaped exchange tube and a heat exchange tube together, and placing a heating plate of a treatment device on a sand cushion layer;
C. and (3) counterweight: unfolding a storage table in the processing device, and placing a balancing weight on the storage table according to design requirements;
D. heating: heated water is conveyed to the U-shaped exchange pipe through a solar heat collector or a heating water tank in the treatment device, and cold and heat exchange is carried out between the U-shaped exchange pipe and the well pipe;
E. draining: the soft soil foundation is heated to ensure that the moisture of the soft soil foundation is changed from liquid state to gas state, and the gas water is collected to the sand cushion layer from the soft soil foundation, thereby reducing the water content of the soft soil foundation and enhancing the strength of the soft soil foundation.
As shown in fig. 3-8, the treatment device comprises a heating plate 1 and a heat supply source, the heating plate 1 comprises an upper plate 1a and a lower plate 1b, the upper plate 1a and the lower plate 1b are fixed together through a plurality of connecting columns 1c, a heat exchange tube 3 is fixed on the lower plate 1b, one end of the heat exchange tube 3 is a water inlet, the other end of the heat exchange tube 3 is a water outlet, the water inlet and the water outlet are communicated with the heat supply source through a pipeline, the heat supply source is arranged on the upper plate 1a, a plurality of U-shaped exchange tubes 12 are vertically arranged at the lower part of the lower plate 1b, the U-shaped exchange tubes 12 are communicated with the heat exchange tubes 3, and the U; adopt this structure, place this processing apparatus on the sand bed course of this soft ground, insert U type exchange tube 12 in the sand well of soft ground, hot plate 1 can be to soft ground extrusion downwards, through the heat supply source with heat through heat exchange tube 3 carry U type exchange tube 12 in, under the pressure effect of device itself and the effect of the improvement of ground temperature, can make the water in the soft ground turn into the gaseous state, discharge with higher speed for the soil body concreties, excellent in use effect.
The U-shaped exchange tubes 12 and the heat exchange tubes 3 are connected together through a detachable structure, so that the suitable U-shaped exchange tubes 12 can be selected according to different depths of the sand well.
The heat exchange tubes 3 are arranged on the lower plate 1b in a serpentine shape, and the heat exchange tubes 3 are in contact with the lower plate 1b, and the lower plate 1b is made of aluminum; by adopting the structure, the heat exchange tube 3 can quickly transfer heat to the soft foundation, and the heat conduction is quick.
The heat supply source is a solar thermal collector 6, the body of the solar thermal collector 6 can be detachably fixed on the upper plate 1a, a water outlet pipe 4 of the solar thermal collector 6 is communicated with a water inlet through a first connecting pipe 8, a conveying pump 11 is arranged at the water inlet, and a water inlet pipe 9 of the solar thermal collector 6 is communicated with a water outlet through a second connecting pipe 5; by adopting the structure, the solar heat collector 6 can collect heat in the environment on fine days, so that resources such as electric energy and the like do not need to be additionally consumed, and after the solar heat collector 6 heats water by adopting the obtained heat, the hot water is continuously conveyed to the heat exchange pipe 3 by the conveying pump 11.
A first three-way valve 10 is arranged at the water inlet, a second three-way valve 2 is arranged at the water outlet, a first connecting pipe 8 is connected to one port of the first three-way valve 10, a second connecting pipe 5 is connected to one port of the second three-way valve 2, a heating water tank 7 can be detachably arranged on the upper plate 1a, an electric heating pipe is arranged in the heating water tank 7, a water inlet pipe 9 of the heating water tank 7 is connected to the other port of the first three-way valve 10, and a water outlet pipe 4 of the heating water tank 7 is connected to the other port of the second; adopt this structure, under adverse weather such as cloudy day, heat the intensification through electric heating pipe to the water in the heating water tank 7, ensure that whole hot-water exchange pipe 3 department has hot water all the time to can make whole device use can normal operating.
The detachable structure comprises a connecting sleeve 18, a sealing ring 22 and a plurality of pressing rods 20, wherein in the embodiment, the sealing ring 22 is a commercially available existing product; the heat exchange tube 3 is provided with a plurality of connecting parts 3a protruding downwards, the cross sections of the connecting parts 3a are inverted T-shaped, the sealing ring 22 is slidably sleeved on the connecting parts 3a, the cross section of the sealing ring 22 is inverted T-shaped, the connecting sleeve 18 is sleeved on the connecting parts 3a, the connecting sleeve 18 is connected with the end part of the U-shaped exchange tube 12 through threads, the connecting parts 3a are further provided with auxiliary rings 21, the middle part of the pressing rod 20 is rotatably connected with the auxiliary rings 21, the upper end of the pressing rod 20 is connected with the connecting sleeve 18 through a steel wire rope 19, and the lower end of the pressing rod 20 can abut against the lower part; by adopting the structure, the end part of the U-shaped exchange tube 12 is in threaded connection with the connecting sleeve 18, the U-shaped exchange tube 12 drives the connecting sleeve 18 to move downwards under the action of the self gravity of the U-shaped exchange tube 12, and the sealing ring 22 can move upwards under the action of the pressing rod 20, so that the sealing performance between the U-shaped exchange tube 12 and the connecting part 3a can be ensured, and the sealing is reliable.
The end part of the upper plate 1a is also hinged with a placing table 14, a connecting rod supporting component 16 for supporting is further arranged between the middle part of the placing table 14 and the upper plate 1a, the side part of the placing table 14 is provided with a roller 13, a bolt 15 is further fixed on the placing table 14, and the end part of the lower plate 1b is fixedly provided with a positioning seat 17 matched with the bolt 15; by adopting the structure, the counter weight block can be placed on the object placing table 14 according to the requirement, so that the whole device has enough downward pressure; meanwhile, when the device needs to be carried, the object placing table 14 swings downwards, the bolt 15 is inserted into the positioning seat 17, and the whole device can be conveniently moved through the roller 13.
The heating water tank 7 comprises a left tank body 7a and a right tank body 7b, a track 28 is horizontally fixed on the upper plate 1a, the left tank body 7a and the right tank body 7b are arranged on the track 28 in a sliding mode, the left tank body 7a and the right tank body 7b are communicated through a telescopic elastic cylinder 7c, a mounting plate is further fixed in the middle of the track 28, an auxiliary motor 25 is fixed on the mounting plate, an output shaft of the auxiliary motor 25 is vertically upward, the vertical end portion of the auxiliary motor 25 is connected with a driving disc 26, uneven annular grooves 26a are formed in the driving disc 26, a left guide pillar 23 matched with the annular groove 26a is mounted at the lower portion of the left tank body 7a, a right guide pillar 27 matched with the annular groove 26a is mounted at the lower portion of the right tank body 7b, a linkage pillar 24 is further fixed on the driving disc 26, and the linkage pillar 24 can abut against the lower; adopt this structure, through designing into movable structures such as left box 7a and right box 7b with heating water tank 7, drive driving-disc 26 through auxiliary motor 25 and rotate, driving-disc 26 can make left box 7a and right box 7b rock about to can make the temperature in the heating water tank 7 keep the uniformity, stirring effect is good.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although more 1, a hot plate is used herein; 1a, an upper plate; 1b, a lower plate; 1c, connecting columns; 2. a second three-way valve; 3. a heat exchange tube; 3a, a connecting part; 4. a water outlet pipe; 5. a second connecting pipe; 6. a solar heat collector; 7. heating the water tank; 7a, a left box body; 7b, a right box body; 7c, a telescopic elastic cylinder; 8. a first connecting pipe; 9. a water inlet pipe; 10. a first three-way valve; 11. a delivery pump; 12. a U-shaped exchange tube; 13. a roller; 14. a placing table; 15. a bolt; 16. a connecting rod support assembly; 17. positioning seats; 18. connecting sleeves; 19. a wire rope; 20. a hold down bar; 21. an auxiliary ring; 22. a seal ring; 23. a left guide post; 24. a linkage column; 25. an auxiliary motor; 26. a drive disc; 26a, an annular groove; 27. a right guide post; 28. track, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (5)
1. A method for treating a soft soil foundation by utilizing a solar energy prepressing combined heating method is characterized by comprising the following steps:
A. well arrangement: arranging well points according to design requirements, drilling or flushing a well at the well points, arranging well pipes with meshes, arranging three adjacent well points in an equilateral triangle, and paving sand bags on the surface of a soft soil foundation to form a sand cushion layer;
B. placing: selecting a U-shaped exchange tube with proper length according to the depth of a well point, assembling the U-shaped exchange tube and a heat exchange tube together, and placing a heating plate of a treatment device on a sand cushion layer;
C. and (3) counterweight: unfolding a storage table in the processing device, and placing a balancing weight on the storage table according to design requirements;
D. heating: heated water is conveyed to the U-shaped exchange pipe through a solar heat collector or a heating water tank in the treatment device, and cold and heat exchange is carried out between the U-shaped exchange pipe and the well pipe;
E. draining: the soft soil foundation is heated to ensure that the moisture of the soft soil foundation is changed from liquid state to gas state, and the gas water is collected to the sand cushion layer from the soft soil foundation, thereby reducing the water content of the soft soil foundation and enhancing the strength of the soft soil foundation.
2. The method for treating soft soil foundation by using solar energy through the combined heating and prepressing method according to claim 1, wherein the treatment device comprises a heating plate and a heat supply source, the heating plate comprises an upper plate and a lower plate, the upper plate and the lower plate are fixed together through a plurality of connecting columns, a heat exchange tube is fixed on the lower plate, one end of the heat exchange tube is a water inlet, the other end of the heat exchange tube is a water outlet, the water inlet and the water outlet are communicated with the heat supply source through pipelines, the heat supply source is arranged on the upper plate, a plurality of U-shaped exchange tubes are vertically arranged at the lower part of the lower plate, the U-shaped exchange tubes are communicated with the heat exchange tubes, and the U-shaped exchange tubes and the heat exchange tubes are connected together through a.
3. The method of claim 1, wherein the heat exchange tubes are arranged on a lower plate in a serpentine shape, and the heat exchange tubes are in contact with the lower plate, and the lower plate is made of aluminum.
4. The method for treating soft soil foundation by utilizing solar energy precompression and combined heating as claimed in claim 1, wherein the heat supply source is a solar collector, the body of the solar collector is detachably fixed on the upper plate, the water outlet pipe of the solar collector is communicated with the water inlet through a first connecting pipe, the water inlet is provided with a delivery pump, and the water inlet pipe of the solar collector is communicated with the water outlet through a second connecting pipe.
5. The method for treating soft soil foundation by utilizing solar energy prepressing combined heating method according to claim 1, characterized in that the water inlet is provided with a first three-way valve, the water outlet is provided with a second three-way valve, the connecting pipe is connected with one port of the first three-way valve, the connecting pipe is connected with one port of the second three-way valve, the upper plate is also detachably provided with a heating water tank, the heating water tank is internally provided with an electric heating pipe, the water inlet pipe of the heating water tank is connected with the other port of the first three-way valve, and the water outlet pipe of the heating water tank is connected with the other port of the second three-way valve.
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| CN112921950B (en) | 2022-03-08 |
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