CN102032697A - Process for realizing shallow layer terrestrial heat exchange by utilizing soil nail - Google Patents
Process for realizing shallow layer terrestrial heat exchange by utilizing soil nail Download PDFInfo
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- CN102032697A CN102032697A CN2010105273929A CN201010527392A CN102032697A CN 102032697 A CN102032697 A CN 102032697A CN 2010105273929 A CN2010105273929 A CN 2010105273929A CN 201010527392 A CN201010527392 A CN 201010527392A CN 102032697 A CN102032697 A CN 102032697A
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- soil nailing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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Abstract
The invention discloses a process for realizing shallow layer terrestrial heat exchange by utilizing soil nails. The process comprises the steps: firstly, drilling a plurality of drilled holes (4) on the wall (1) of an upright foundation (3); secondly, selecting a single tube or U-shaped tube heat exchanger (5) according to the diameter of soil nails (2) and actual requirement; thirdly, injecting circulating liquid (10) added with antifreeze agent into the heat exchanger (5); fourthly, injecting cement paste (6) into the drilled holes (4) which are internally provided with the heat exchanger (5) and a steel bar (7); and fifthly spraying concrete onto the terminal of soil nails (2) and the wall (1) which are connected together. The invention has the beneficial effects of reducing cost, saving occupied area, being convenient to construct and mount and improving construction efficiency.
Description
Technical field
The present invention relates to the central a kind of new technology that realizes the exchange and the utilization of geothermal using of slope project, Tunnel Engineering and base pit engineering, particularly a kind of technology of utilizing soil nailing to realize the geothermal using exchange.
Background technology
Soil nailing is to be used for reinforcing or the slender rod piece of the on-the-spot original position soil body of anchoring simultaneously, in side slope that natural side slope or excavation form, foundation ditch original position ground body, be bordering on and be horizontally disposed with the reinforcement rod member and along the domatic concrete topping that is provided with, thereby the mechanical property that makes whole geotechnological system is improved and improves the original position reinforcement technology of side slope, base pit stability, takes boring in the soil usually, inserts deformed bar to be Ribbed Bar and to make along the method for hole total length slip casting.The also available steel pipe of soil nailing, angle steel etc. adopt the method that directly is driven into to insert in the soil as the nail body.Interfacial adhesion or frictional force between the soil nailing dependence and the soil body, passive stressed under the soil body deforms condition, and mainly bear the pulling force effect.
Shallow surface (can be referred to as the face of land can, geothermal using) resembles a huge solar thermal collector, has collected 47% solar energy, utilizes human every year more than 500 times of energy.This low enthalpy heat energy that infinitely, is not subjected to region, resource restriction that is close to is human utilizable clean reproducible energy.And geothermal using does not resemble solar energy and is subjected to climatic effect, does not resemble the restriction that deep geothermal heat is subjected to resource and geologic structure yet.Earth source heat pump (Ground-source heat pump is called for short GSHP) is a characteristic of utilizing geothermal using, wants a green technology of " changes in temperature " to the earth.Earth source heat pump utilizes geothermal energy in earth surface thin solum or the water source as cold (heat) source, to hang down the heat energy transmission by source pump winter transfers in the building that needs heating, by source pump the heat in the building is scattered and disappeared summer and transfer in earth soil or the water source, thereby realizing heat supply in winter, summer refrigeration, is a kind of efficient, environmental protection, energy-conservation air-conditioning equipment.Soil source heat pump is a kind of of earth source heat pump, and it is the earth-source hot-pump system that utilizes the closed cycle of heat in the underground ground.It flows the heat transfer between realization system and the earth by circulation fluid (water or be the anti-icing fluid of main component with water) in the sealing underground buried tube.In the heat supplying process, fluid takes heat to indoor by system from underground collection heat more in the winter time; System's antikinesis when freeze summer promptly from the indoor heat of taking away, is delivered to heat in the underground ground by system again.Therefore, underground coupling heat pump system has kept earth source heat pump to utilize the advantage of the earth as Cooling and Heat Source, does not need groundwater abstraction as the medium that conducts heat simultaneously again.But present perpendicularly buried pipe formula ground source heat pump technology, because perpendicularly buried pipe formula ground source heat pump technology land area is bigger, efficiency of construction is not high, the construction and installation trouble, thus cause the expense height, therefore, the use of perpendicularly buried pipe formula ground source heat pump technology is not very extensive.
Summary of the invention
At the defective of present perpendicularly buried pipe formula ground source heat pump technology, the invention provides a kind of technology of utilizing soil nailing to realize the geothermal using exchange.
To achieve these goals, the technical solution used in the present invention is:
A kind of technology of utilizing soil nailing to realize the geothermal using exchange, the first step is bored several cross-drilled holes on the metope that is arranged on the upright post basic, and cross-drilled hole and horizontal direction angle are at 15-20 °; In second step, select single tube or U type pipe in pipe for use according to the diameter and the actual needs of soil nailing; In the 3rd step, in heat exchanger, inject the circulation fluid that is added with antifreezing agent; In the 4th step, in being equipped with the cross-drilled hole of heat exchanger and reinforcing bar, inside injects cement mortar; The 5th step, gunite concrete on soil nailing end that is connected together and metope;
The 3rd step, described circulation fluid was that volumetric concentration is the ethylene glycol solution of 20%-30%;
The 4th step, described cement mortar was that the ratio of mud is 0.5 cement grout, and cement is normal silicate 425# cement;
Having added volume ratio in the described cement mortar of the 4th step is the bentonite of 3%-5%;
The diameter of the described cross-drilled hole of the first step is 100mm～200mm;
The 3rd step diameter of described reinforcing bar is 15mm～25mm;
The water pipe of top is a water inlet pipe in the described U type pipe in pipe of second step, and the water pipe of below is an outlet pipe.
Beneficial effect of the present invention: the soil nailing of routine and the utilization of geothermal using resource are connected, with the soil nailing of routine carrier as underground buried tube, thereby can avoid digging on the ground the deep hole of many 20-100 rice, reduce cost greatly, saved land area, also improved efficiency of construction, and can make soil nailing construction and earth source heat pump construction integrated, construction install convenience, advantage such as the construction period is short and construction cost is low can be widely used in the closed-loop system pipeline in the earth-source hot-pump system.
Description of drawings
Fig. 1 side structure schematic diagram of the present invention;
Fig. 2 overall structure schematic diagram of the present invention;
Fig. 3 sectional view of the present invention.
The specific embodiment
A kind of technology of utilizing soil nailing to realize the geothermal using exchange, the first step is bored several cross-drilled holes 4 on the metope 1 that is arranged on the upright post basic 3, and cross-drilled hole 4 and horizontal direction angle are at 15-20 °; Second step, select single tube or U type pipe in pipe 5 for use according to the diameter and the actual needs of soil nailing 2, if adopt U type pipe in pipe 5, the water pipe of top is a water inlet pipe 8, the water pipe of below is an outlet pipe 9; In the 3rd step, in heat exchanger 5, inject the circulation fluid 10 that is added with antifreezing agent; In the 4th step, be equipped with to inside and inject cement mortar 6 in the cross-drilled hole 4 of heat exchanger 5 and reinforcing bar 7; The 5th step; gunite concrete on soil nailing 2 ends that are connected together and metope 1; the member of getting in touch at domatic setting of slight slope and soil nailing 2 end connections; form the heat exchange integrated member; gunite concrete is formed the soil nailing surface layer structure; have self-supporting tendency and can prop up retaining that it reinforced the reinforcement zone of body afterwards thereby constitute one, and heat-exchange system is played a protective role.The 3rd step, described circulation fluid 10 was the ethylene glycol solution of 20%-30% for volumetric concentration.The 4th step, described cement mortar 6 was that the ratio of mud is 0.5 cement grout, and cement is normal silicate 425# cement.Having added volume ratio in the described cement mortar 6 of the 4th step is the bentonite of 3-5%.The diameter of the described cross-drilled hole 4 of the first step is 100mm～200mm.The 3rd step diameter of described reinforcing bar 7 is 15mm～25mm.
Wherein the control of pore-forming error is as shown in table 1.
The control of table 1 pore-forming error
| The hole is biased poor | The gradient deviation | The hole depth deviation |
| ±5mm | ±2° | ±50mm |
Operation principle of the present invention is: according to the size of the soil nailing 2 diameters heat exchanger 5 of packing in the soil nailing the inside, heat exchanger 5 inside are full of the circulation fluid 10 that mixes antifreezing agent, effect at earth source heat pump, effect by soil nailing 2 inner loop liquid 10, realize the heat exchange of the soil body-soil nailing-heat exchanger and supporting body of wall, thereby play the effect that effectively utilizes geothermal using and control braced wall body temperature degree.
Beneficial effect of the present invention: the soil nailing of routine and the utilization of geothermal using resource are connected, with the soil nailing of the routine carrier as the subterranean heat exchanger pipe laying, thereby can avoid digging on the ground the deep hole of many 20-100 rice, greatly reduce cost, saved land area, also improved efficiency of construction, and can make nail Construction and earth source heat pump construction integrated, construction install convenience, the advantage such as the construction period is short and construction cost is low can be widely used in the closed-loop system pipeline in the earth-source hot-pump system.
The present invention is suitable for adopting the soil nailing of boring slip casting method construction.
The simple replacement of those skilled in the art and replacing all are within this patent protection domain in this area.
Claims (7)
1. one kind is utilized soil nailing to realize the technology that geothermal using exchanges, and it is characterized in that:
The first step go up to be bored several cross-drilled holes (4) at the metope (1) that is arranged on the upright post basic (3), with the horizontal direction angle at 15-20 °;
In second step, select single tube or U type pipe in pipe (5) for use according to the diameter and the actual needs of soil nailing (2);
In the 3rd step, in heat exchanger (5), inject the circulation fluid (10) that is added with antifreezing agent;
In the 4th step, injection cement mortar (6) in the cross-drilled hole (4) of heat exchanger (5) and reinforcing bar (7) is installed to inside;
In the 5th step, go up gunite concrete at the soil nailing that is connected together (2) end and metope (1).
2. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 1 is characterized in that: the 3rd described circulation fluid of step (10) is the ethylene glycol solution of 20%-30% for volumetric concentration.
3. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 1 and 2 is characterized in that: the 4th described cement mortar of step (6) is that the ratio of mud is 0.5 cement grout, and cement is normal silicate 425# cement.
4. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 3 is characterized in that: having added volume ratio in the 4th described cement mortar of step (6) is the bentonite of 3-5%.
5. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 4, it is characterized in that: the diameter of the described cross-drilled hole of the first step (4) is 100mm～200mm.
6. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 5, it is characterized in that: the diameter of the 3rd described reinforcing bar of step (7) is 15mm～25mm.
7. a kind of technology of utilizing soil nailing to realize the geothermal using exchange according to claim 6 is characterized in that: the water pipe of top is water inlet pipe (8) in the described U type pipe in pipe of second step, and the water pipe of below is outlet pipe (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105273929A CN102032697A (en) | 2010-11-01 | 2010-11-01 | Process for realizing shallow layer terrestrial heat exchange by utilizing soil nail |
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| CN2010105273929A CN102032697A (en) | 2010-11-01 | 2010-11-01 | Process for realizing shallow layer terrestrial heat exchange by utilizing soil nail |
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| CN102032697A true CN102032697A (en) | 2011-04-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061647A (en) * | 2014-07-14 | 2014-09-24 | 马遂根 | Power saving device for energy storage and energy conversion of air conditioner |
| CN105258372A (en) * | 2015-11-06 | 2016-01-20 | 三峡大学 | Geothermal energy collecting and storing device with anchor rod supporting structure |
| CN111677053A (en) * | 2020-05-22 | 2020-09-18 | 同济大学 | Cold region tunnel fire pipeline anti-freezing heat preservation system utilizing geothermal energy |
-
2010
- 2010-11-01 CN CN2010105273929A patent/CN102032697A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061647A (en) * | 2014-07-14 | 2014-09-24 | 马遂根 | Power saving device for energy storage and energy conversion of air conditioner |
| CN105258372A (en) * | 2015-11-06 | 2016-01-20 | 三峡大学 | Geothermal energy collecting and storing device with anchor rod supporting structure |
| CN111677053A (en) * | 2020-05-22 | 2020-09-18 | 同济大学 | Cold region tunnel fire pipeline anti-freezing heat preservation system utilizing geothermal energy |
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Application publication date: 20110427 |