CN107326925A - One kind manufacture ground end heat exchange chamber method - Google Patents
One kind manufacture ground end heat exchange chamber method Download PDFInfo
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- CN107326925A CN107326925A CN201710601635.0A CN201710601635A CN107326925A CN 107326925 A CN107326925 A CN 107326925A CN 201710601635 A CN201710601635 A CN 201710601635A CN 107326925 A CN107326925 A CN 107326925A
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- heat exchange
- exchange chamber
- ground end
- pile tube
- end heat
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/11—Geothermal energy
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Paleontology (AREA)
- Mining & Mineral Resources (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Sustainable Development (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Road Paving Structures (AREA)
Abstract
One kind manufacture ground end heat exchange chamber method, comprises the following steps：S1, pass through pile tube in below ground and inject cement mortar formation cap layer and foot mat；S2, the pressure break formation heat exchange chamber between cap layer and foot mat；By above step in ground end formation heat exchange chamber.By using elder generation cap layer and foot mat are prepared in subsurface, then the scheme of heat energy chamber is formed by pressure break between cap layer and foot mat, can be in heat exchange chamber of the ground end formation with larger heat exchange area, greatly improve the heat exchange efficiency of below ground, utilization efficiency of heat energy is improved, and uses the program, is limited smaller by geological conditions, success rate is higher, and comprehensive construction cost is relatively low.During the method for the present invention is particularly suitable for use in using air as the scheme of heat transferring medium.
Description
Technical field
It is particularly a kind of to be used to manufacture ground end heat exchange chamber method the present invention relates to geothermal energy utilization field.
Background technology
It is in the prior art that circulation takes 40 ~ 50 DEG C of underground hot water to be heated into practical scheme, but the program
Requirement to landform is higher, is only applicable to region of the hot spring resource compared with horn of plenty.In ground end certain limit, substantially it is in 13 ~
Under 25 DEG C of constant temperatures, then often 100 meters of decline, temperature substantially increases by 3 ~ 6 DEG C, utilizes the heat energy of ground end to carry out the temperature of construction
Regulation, is the energy utilization patterns of a cleaning and environmental protection.
The A of Chinese patent literature CN 101939598, it is proposed that a kind of geothermal apparatus, using double-jacket tube water circulation
Scheme, the heat energy of ground end and construction are swapped, and the problem of existing be, the under ground portion heat exchange efficiency of this structure compared with
It is low, and the energy consumption of water circulation is higher.
What author Zhang Qing 2014 was delivered《Enhanced geothermal system artificial fracturing study mechanism and application》, describe and utilize pressure
Cracking method is under special hot dry rock orographic condition, and ground depth is more than the scheme that 2000 meters of heat energy collection is utilized.But should
Method is mainly used in the position that ground depth is more than 2000 meters, and construction cost is high, and failure probability is larger, and countries in the world are also still
It is under test.The geological conditions of part region is complex, and various orographic conditions are simultaneously deposited, and the application of the program exists larger
Technical difficulty.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of manufacture ground end heat exchange chamber method, can be in geological conditions
Complex region, forms a kind of heat exchange chamber for being used to exchange heat, and cost is relatively low, and success rate is high.
In order to solve the above technical problems, the technical solution adopted in the present invention is：One kind manufacture ground end heat exchange chamber method,
Comprise the following steps：
S1, pass through pile tube in below ground and inject cement mortar formation cap layer and foot mat；
S2, the pressure break formation heat exchange chamber between cap layer and foot mat；
By above step in ground end formation heat exchange chamber.
It is preferred that scheme in, heat exchange chamber locates below ground level at 10 ~ 1900 meters.
It is preferred that scheme in, heat exchange chamber locates below ground level at 10 ~ 500 meters.
It is preferred that scheme in, described cement mortar is slow setting cement mortar, and the presetting period is more than 24h.
It is preferred that scheme in, described cement mortar includes following components by weight：Silicate mineral powder 30 ~
40 parts, 10 ~ 20 parts of pozzolanic activity powder, anhydrous 5 ~ 10 parts of sulphoaluminate phase powder, silicon oxide particle 35 ~ 55
Part, 0.5 ~ 1.5 part of naphthalenesulfonate formaldehyde condensation compound, 0.2 ~ 0.5 part of retarder, 0.1 ~ 0.4 part of water-loss reducer.
It is preferred that scheme in, described cement mortar also includes following components in parts by weight：30 ~ 80 parts of iron sand.
It is preferred that scheme in, in step s3, pressure break use riverfrac treatment or proppant pressure break.
It is preferred that scheme in, in fracturing process, according to pressure loss situation, segmentation injection cement mortar or proppant.
It is preferred that scheme in, described pile tube is multiple, and the heat exchange chamber formed between each pile tube is interconnected.
It is preferred that scheme in, the pile tube positioned at the heat exchange chamber edge interconnected respectively inputs pile tube and efferent duct
Stake, the pile tube between input pile tube and output pile tube is closed.
A kind of manufacture ground end heat exchange chamber method that the present invention is provided, cap layer and bottom are prepared by using elder generation in subsurface
Bed course, then between cap layer and foot mat by pressure break formation heat energy chamber scheme, can ground end formation have compared with
The heat exchange chamber of big heat exchange area, greatly improves the heat exchange efficiency of below ground, improves utilization efficiency of heat energy, and use the party
Case, is limited smaller, success rate is higher by geological conditions, and comprehensive construction cost is relatively low.The present invention method be particularly suitable for use in
Air is as in the scheme of heat transferring medium.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples：
Fig. 1 is manufactures the structural representation of single heat energy chamber in the present invention.
Structural representation when Fig. 2 is two heat energy chamber work of manufacture in the present invention.
Structural representation when Fig. 3 is three heat energy chamber work of manufacture in the present invention.
Fig. 4 is the horizontal cross-section schematic diagram in the present invention during multiple heat energy chamber work.
In figure：Pile tube 1, inputs pile tube 101, exports pile tube 102, closes pile tube 103, cap layer 2, foot mat 3, heat energy chamber
Room 4, ground 5.
Embodiment
Embodiment 1：
As in Fig. 1 ~ 4, one kind manufacture ground end heat exchange chamber method comprises the following steps：
S1, on ground 5 below by way of pile tube injection cement mortar formation cap layer 2 and foot mat 3；
Cement mortar is injected laterally from pile tube, the faces end head plugging of pile tube, according to topographic structure and the difference of depth, grouting pressure
For 5 ~ 50MPa, the driving depth of pile tube is at 10 ~ 1900 meters of below ground.The slip casting depth being preferred to use in this example is 100 meters
~ 200 meters or so of position, grouting pressure is 30MPa, and the difference in height of cap layer 2 and foot mat 3 is between 5 ~ 20 meters.It is preferred that
In scheme, described cement mortar is slow setting cement mortar, and the presetting period is more than 24h.It is preferred to use the presetting period in this example big
In 72h cement mortar.Thus scheme, it is to avoid cement mortar premature set, so as to influence the transverse direction of cap layer 2 and foot mat 3
Spreading range.The problem of to avoid the occurrence of the line development of slip casting crack, scheme preferably, cap layer 2 and foot mat 3 are using multiple
The mode of delamination pour slurry.It is preferred that scheme, using first upper end slip casting and then lower end slip casting, grouting pressure is incrementally increased, and forms perpendicular
To the cap layer 2 or foot mat 3 that section is class triangle disk-like structure；
Or first lower end slip casting and then upper end slip casting, grouting pressure incrementally increases, and it is class del plate-like to form vertical cross-section
The cap layer 2 or foot mat 3 of structure；
Or first upper/lower terminal, then again in the middle of slip casting mode, forms top cover of the vertical cross-section for class rhombus disk-like structure
Layer 2 or foot mat 3；
It is preferred that scheme in, described cement mortar includes following components by weight：Silicate mineral powder 30 ~ 40
Part, 10 ~ 20 parts of pozzolanic activity powder, anhydrous 5 ~ 10 parts of sulphoaluminate phase powder, 35 ~ 55 parts of silicon oxide particle, naphthalene
0.5 ~ 1.5 part of sulfonate and formaldehyde condensation product, 0.2 ~ 0.5 part of retarder, 0.1 ~ 0.4 part of water-loss reducer.
Or 30 ~ 40 parts of silicate mineral powder, 10 ~ 20 parts of pozzolanic activity powder, anhydrous sulphoaluminate phase
5 ~ 10 parts of powder, 35 ~ 55 parts of alumina ceramic grain, 0.5 ~ 1.5 part of naphthalenesulfonate formaldehyde condensation compound, retarder 0.2 ~
0.5 part, 0.1 ~ 0.4 part of water-loss reducer.The cost of the program is higher, but compression strength and heat conductivility are more preferably.
In above-mentioned scheme, retarder is preferred to use sugar calcium or lignosulfonates, and water-loss reducer is preferred to use cellulose ether.
In further preferred scheme, described cement mortar also includes following components in parts by weight：30 ~ 80 parts of iron sand
It is used as aggregate.Thus scheme, further improves the heat conductivility of cement mortar.
S2, the pressure break formation heat exchange chamber 4 between cap layer 2 and foot mat 3；
It is preferred that scheme in, heat exchange chamber 4 is located at ground below 5 at 10 ~ 1900 meters.
It is preferred that scheme in, heat exchange chamber 4 is located at ground below 5 at 10 ~ 500 meters.
Heat exchange chamber 4 in this example is located at ground below 5 at 100 meters ± 10 meters.
It is preferred that scheme in, pressure break use riverfrac treatment or proppant pressure break.Frac pressure is less than the slip casting in step s1
Pressure.
In further preferred scheme, in fracturing process, according to pressure loss situation, segmentation injection cement mortar or branch
Support agent.I.e. according to pressure loss situation, when using riverfrac treatment, segmentation injection cement mortar or proppant, to block distal end
Crack.When using proppant pressure break, segmentation injects cement mortar to block distal end crack.Proppant using quartz sand, iron sand,
One or more and the slurries of water formation in glass marble or bauxite ceramic particle.
By above step in ground end formation heat exchange chamber.
It is preferred that scheme in, described pile tube is multiple, and the heat exchange chamber 4 formed between each pile tube is interconnected.
It is preferred that scheme in, the pile tube positioned at the edge of heat exchange chamber 4 interconnected respectively inputs pile tube 101 and defeated
Go out pile tube 102, the pile tube 1 between input pile tube 101 and output pile tube 102 is closed.It is preferred that, will by the way of cement grout
The closing of pile tube 1 for inputting pile tube 101 and exporting between pile tube 102 turns into closing pile tube 103, and Grouting Cement herein is using condensation
The cement of speed, rate of set is higher than foregoing cement mortar, and thus structure, extends transfer path, and strengthen heat
The support strength of energy chamber 4.
Embodiment 2：
On the basis of embodiment 1, more detailed construction procedure is as follows：
1st, landform is selected, and target landform is the geological conditions mixed at hilly country, 100 meters of ground end for sandstone and granite.
2nd, pile tube 1 is squeezed into drilling equipment, at 100 meters of ground end, with many multilayer injection cement mortar shapes of 10 ~ 30 MPa
Into the cap layer 2 of vertical cross-section substantially equilateral triangle disk-like structure；
3rd, after cap layer 2 after 10d solidifies, at about 110 meters of ground end, formed vertically with many multilayer slip castings of 10 ~ 30 MPa
The foot mat 3 of section substantially del disk-like structure；
4th, after foot mat 3 after 10d solidifies, with 15 ~ 25 MPa, at about 105 meters of ground end, with proppant pressure break formation heat energy
Chamber 4, frac pressure is 15 ~ 25 MPa.When forming heat energy chamber 4, best one-shot forming, it is to avoid multiple pressure break makes the expansion in crack
Open coverage of the scope beyond cap layer 2 and foot mat 3.If one-shot forming fails, rate of set is injected with 1 ~ 6 MPa pressure
Faster cement, rate of set is higher than foregoing cement mortar.After initial set, failure heat energy chamber 4 neighbouring height and position again
Secondary progress pressing crack construction operation.Until forming satisfied heat energy chamber 4.
5th, preferably, as shown in Figure 2, the shaping heat energy chamber 4 again at 30 meters of heat energy chamber 4 outermost radius, makes two
The individual marginal portion of heat energy chamber 4 intersects and connected, in fracturing process, and pile tube 1 before need to continue to carry out pressurize auxiliary pressure break
Construction.
6th, persistently form new heat energy chamber 4 and interconnect, with being stepped up for heat energy chamber 4, heat energy chamber 4 into
The risk of type construction is significantly increased, and the heat energy chamber 4 generally interconnected does not exceed 5.
7th, the connected state tested from pile tube 1 between each heat energy chamber 4, after test is errorless, middle pile tube 1 is in the milk
Closure turns into closing pile tube 103, filling process, using the faster cement mortar of rate of set, using 1 ~ 6 MPa grouting pressure
Cement mortar is avoided to block the heat energy chamber 4 where closing pile tube 103 in power, work progress.
8th, the pile tube 1 at two edges is left, respectively as input pile tube 101 and output pile tube 102, wherein inputting pile tube
101 access high pressure positive blowers carry out air blast, and output pile tube 102 is connected with the heat exchanging pipe of construction, after heat exchange, from construction
Top air exhauster be vented directly in air.After tested, outdoor temperature be 3 DEG C, indoor temperature be 10 DEG C under the conditions of, input pipe
The temperature that stake 101 inputs wind is 4 DEG C, and output pile tube 102 output wind speed is 13 ~ 20 meter per seconds, and the temperature of output wind is 25 DEG C, ground
Bottom point heat transfer effect is ideal, with practical value.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the limitation for the present invention, this hair
Technical characteristic in the technical scheme that bright protection domain should be recorded with claim, including the technical scheme of claim record
Equivalents are protection domain.Equivalent substitution i.e. within this range is improved, also within protection scope of the present invention.
Claims (10)
1. one kind manufacture ground end heat exchange chamber method, it is characterized in that comprising the following steps：
S1, on ground（5）Below by way of pile tube injection cement mortar formation cap layer（2）And foot mat（3）；
S2, in cap layer（2）With foot mat（3）Between pressure break formation heat exchange chamber（4）；
By above step in ground end formation heat exchange chamber.
2. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that：Heat exchange chamber（4）Positioned at ground
Face（5）Below at 10 ~ 1900 meters.
3. a kind of manufacture ground end heat exchange chamber method according to claim 2, it is characterized in that：Heat exchange chamber（4）Positioned at ground
Face（5）Below at 10 ~ 500 meters.
4. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that：Described cement mortar is slow
Solidifying cement mortar, the presetting period is more than 24h.
5. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that described cement mortar includes
Following components by weight：30 ~ 40 parts of silicate mineral powder, 10 ~ 20 parts of pozzolanic activity powder, anhydrous sulphur aluminic acid
5 ~ 10 parts of salt mineral powder, 35 ~ 55 parts of silicon oxide particle, 0.5 ~ 1.5 part of naphthalenesulfonate formaldehyde condensation compound, retarder 0.2 ~
0.5 part, 0.1 ~ 0.4 part of water-loss reducer.
6. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that described cement mortar is also wrapped
Include following components in parts by weight：30 ~ 80 parts of iron sand.
7. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that：In step s3, pressure break is used
Riverfrac treatment or proppant pressure break.
8. a kind of manufacture ground end heat exchange chamber method according to claim 7, it is characterized in that：In fracturing process, according to
Pressure loss situation, segmentation injection cement mortar or proppant.
9. a kind of manufacture ground end heat exchange chamber method according to claim 1, it is characterized in that：Described pile tube to be multiple,
The heat exchange chamber formed between each pile tube（4）Interconnect.
10. a kind of manufacture ground end heat exchange chamber method according to claim 9, it is characterized in that：Positioned at changing for interconnecting
Hot chamber（4）The pile tube at edge, respectively inputs pile tube（101）With output pile tube（102）, input pile tube（101）With efferent duct
Stake（102）Between pile tube（1）Closing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710601635.0A CN107326925B (en) | 2017-07-21 | 2017-07-21 | A kind of manufacture ground end heat exchange chamber method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601635.0A CN107326925B (en) | 2017-07-21 | 2017-07-21 | A kind of manufacture ground end heat exchange chamber method |
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| CN107326925A true CN107326925A (en) | 2017-11-07 |
| CN107326925B CN107326925B (en) | 2018-07-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103090571A (en) * | 2013-01-06 | 2013-05-08 | 姚亚明 | Method of circular mining geothermal resources |
| CN104695926A (en) * | 2014-12-30 | 2015-06-10 | 王作韬 | Low temperature geothermal energy production technique method |
| US20160146482A1 (en) * | 2012-07-24 | 2016-05-26 | Gary Scott Peele | Trench-conformable geothermal heat exchange reservoirs and related methods and systems |
| CN106321052A (en) * | 2015-06-30 | 2017-01-11 | 中国石油化工股份有限公司 | Method for mining thin inter bed oil shale |
| CN205939792U (en) * | 2016-07-05 | 2017-02-08 | 河南圆方干热岩勘探开发股份有限公司 | Do exquisite heat transfer system that splits of two straight well people of hot dry rock (EGS) |
-
2017
- 2017-07-21 CN CN201710601635.0A patent/CN107326925B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160146482A1 (en) * | 2012-07-24 | 2016-05-26 | Gary Scott Peele | Trench-conformable geothermal heat exchange reservoirs and related methods and systems |
| CN103090571A (en) * | 2013-01-06 | 2013-05-08 | 姚亚明 | Method of circular mining geothermal resources |
| CN104695926A (en) * | 2014-12-30 | 2015-06-10 | 王作韬 | Low temperature geothermal energy production technique method |
| CN106321052A (en) * | 2015-06-30 | 2017-01-11 | 中国石油化工股份有限公司 | Method for mining thin inter bed oil shale |
| CN205939792U (en) * | 2016-07-05 | 2017-02-08 | 河南圆方干热岩勘探开发股份有限公司 | Do exquisite heat transfer system that splits of two straight well people of hot dry rock (EGS) |
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| CN107326925B (en) | 2018-07-03 |
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