CN108104138A - A kind of ground source well backfill system and earth-filling method - Google Patents
A kind of ground source well backfill system and earth-filling method Download PDFInfo
- Publication number
- CN108104138A CN108104138A CN201711350773.2A CN201711350773A CN108104138A CN 108104138 A CN108104138 A CN 108104138A CN 201711350773 A CN201711350773 A CN 201711350773A CN 108104138 A CN108104138 A CN 108104138A
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- China
- Prior art keywords
- grouting pipe
- grouting
- pipe
- well
- ground
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/12—Back-filling of foundation trenches or ditches
Abstract
The present invention relates to a kind of ground source well backfill system and earth-filling methods, belong to Di Yuanjing backfill construction fields.Technical solution：Including：Mixer, grouting pump, Grouting Pipe, double U heat exchangers and carry pipe machine, the mixer is connected with the grouting pump, the grouting pump is connected with described Grouting Pipe one end, the Grouting Pipe other end is connected with double U heat exchangers, the pipe machine that carries is connected with the Grouting Pipe, for promoting the Grouting Pipe.Advantageous effect is：Ground of the present invention source well backfill system and earth-filling method grout material, by the slurry of overflow, progressively discharge original air and moisture in well upwards from the upward high pressure grouting filling in deep-well bottom, backfill ground source well is not easy to plug, air discharge is thorough, and backfill compactness is high, and heat transfer effect is more preferable.
Description
Technical field
Possession source of the present invention well backfill construction field more particularly to a kind of ground source well backfill system and earth-filling method.
Background technology
Ground source heat pump technology has been widely used, with being particularly perpendicularly buried pipe formula source due to its energy saving in China
Heat pump techniques need drilling largely to exchange heat deep-well, and embedment heat exchanger tube is then needed with the good backfill material filling of heat conductivility
It is closely knit, but a part is backfilled using nature at present, and the slip casting that Grouting Pipe is placed on well head by a part backfills, this two kinds of methods are all held
Easily for obstruction in the middle part of well, air row is not net, and backfill effect is poor, causes heat transfer effect bad, also has small part to use bottom
Slip casting earth-filling method though compactness can be solved the problems, such as, is lifted up Grouting Pipe speed, excessive velocities cause because being unable to control it
Slip casting nozzle is higher than pulp surface, backfills leakiness, speed is excessively slow, and Grouting Pipe can be caused to be embedded in well and do not pulled out not come out.
The content of the invention
In order to solve feed back in the prior art, easily obstruction is in the middle part of well, and air row is not net, and backfill effect is poor, heat exchange
Effect is bad, the problems such as being unable to control hoisting grouting pipe speed, and the present invention provides a kind of ground source well and backfills system and earth-filling method,
Grout material is from the filling of the upward high pressure grouting in deep-well bottom, by the slurry of overflow, progressively upwards in discharge well original air and
Moisture, backfill ground source well are not easy to plug, and air discharge is thorough, and backfill compactness is high, and heat transfer effect is more preferable.
Technical solution is as follows：
A kind of ground source well backfill system, including：Mixer, grouting pump, Grouting Pipe, double U heat exchangers and pipe machine is carried, it is described to stir
It mixes machine to connect with the grouting pump, the grouting pump is connected with described Grouting Pipe one end, the Grouting Pipe other end and double U
Heat exchanger connects, and the pipe machine that carries is connected with the Grouting Pipe, for promoting the Grouting Pipe.
Further, filler batch box is further included, for measuring the backfilling material for being put into the mixer.
Further, controller is further included, the controller is connected with the grouting pump and the pipe machine that carries, for controlling
The grouting pump and described carry pipe machine.
Further, the controller is PLC control system.
Further, the grouting pump is screw grouting pump.
Present invention additionally comprises a kind of ground source well earth-filling method, step is as follows：
Packing volume needed for S1, calculating adds in filler in mixer by several times；
S2, Grouting Pipe are inserted into ground source bottom together with double U heat exchangers；
S3, grout material are filled by Grouting Pipe from the upward high pressure grouting in deep-well bottom；
S4, Grouting Pipe is stepped up, by the slurry of overflow, progressively discharges original air and moisture in well upwards；
S5, up to ground source, well head has grout material outflow, completes the backfill of entire deep-well.
Further, the method for hoisting grouting pipe is gradation lift method, makes Grouting Pipe apart from shaft bottom X meters, divides Y promotion,
Z meters are promoted every time.
Further, the method for hoisting grouting pipe is dynamic lift method, and Grouting Pipe starts slip casting, wait to starch apart from shaft bottom X meters
After N meters from slip casting nozzle of identity distance, Grouting Pipe starts at the uniform velocity to be promoted, and at the same time slip casting, it is ensured that and slip casting nozzle is in below pulp surface,
Apart from N meters of pulp surface.
Further, it is as follows that packing volume method is calculated in S1；
A1, ground source well body product is calculated：
V1=S1*h1
Wherein：V1 is ground source well body product, and S1 is Di Yuan shaft bottoms area, and h is ground source well height；
A2, double U heat exchanger volumes are calculated：
V2=S2*h2*n
Wherein：V2 is double U heat exchanger volumes, and S2 is single heat exchanger floor space, and h2 is single heat exchanger length, and n is to change
Hot device radical；
A3, computational theory can return packing volume：
V3=V1-V2
Wherein：V3 can return packing volume for theory；
A4, calculating can actually return packing volume：
V=V3*80%
Wherein：V is that can actually return packing volume.
Further, the promotion speed of Grouting Pipe is：
V=q-p/S1-S2*n
Wherein：V is the promotion speed of Grouting Pipe, and q is the slurry flow of known Grouting Pipe, and p is in known Grouting Pipe
Aqueous flow in slurries, S1 are Di Yuan shaft bottoms area, and S2 is single heat exchanger floor space, and n is heat exchanger radical；
Grouting Pipe start promoted before stand-by period be：
T=(X+N)/V
Wherein：T is that Grouting Pipe starts the stand-by period before being promoted, and X is distance of the Grouting Pipe to shaft bottom, and N is slip casting nozzle
Distance apart from pulp surface, V are the promotion speed of Grouting Pipe.
The beneficial effects of the invention are as follows：
Ground of the present invention source well backfill system and earth-filling method grout material are filled from the upward high pressure grouting in deep-well bottom,
By the slurry of overflow, progressively original air and moisture in discharge well, backfill ground source well are not easy to plug upwards, and air discharge is thorough
Bottom, backfill compactness is high, and heat transfer effect is more preferable.
Description of the drawings
Fig. 1 backfills system structure diagram for present invention ground source well；
Fig. 2 is 3 schematic diagram of the embodiment of the present invention；
In figure：1. mixer, 2. grouting pumps, 3. Grouting Pipes, 4. ground source wells, 5. pairs of U heat exchangers, 6. filler batch boxes.
Specific embodiment
Embodiment 1
A kind of ground source well backfill system, including：Mixer 1, grouting pump 2, Grouting Pipe 3, double U heat exchangers 5 and pipe machine is carried, institute
It states mixer 1 and the grouting pump 2 connects, the grouting pump 2 is connected with described 3 one end of Grouting Pipe, 3 other end of Grouting Pipe
It is connected with double U heat exchangers 5, the pipe machine that carries is connected with the Grouting Pipe 3, for promoting the Grouting Pipe 3.
Further, filler batch box 6 is further included, for measuring the backfilling material for being put into the mixer 1.
Further, controller is further included, the controller is connected with the grouting pump 2 and the pipe machine that carries, for controlling
It makes the grouting pump 2 and described carries pipe machine.
Further, the controller is PLC control system.
Further, the grouting pump 2 is screw grouting pump.
Present invention additionally comprises a kind of ground source well earth-filling method, step is as follows：
Packing volume needed for S1, calculating adds in filler in mixer 1 by several times；
S2, Grouting Pipe 3 are inserted into ground source bottom with double U heat exchangers 5 together；
S3, grout material are filled by Grouting Pipe 3 from the upward high pressure grouting in deep-well bottom；
S4, Grouting Pipe 3 is stepped up, by the slurry of overflow, progressively discharges original air and moisture in well upwards；
S5, up to ground source, well head has grout material outflow, completes the backfill of entire deep-well.
Further, the method for hoisting grouting pipe 3 is gradation lift method, and Grouting Pipe 3 is made to divide Y times and carry apart from shaft bottom X meters
It rises, promotes Z meters every time.
Further, the method for hoisting grouting pipe 3 is dynamic lift method, and Grouting Pipe 3 starts slip casting, treat apart from shaft bottom X meters
Pulp surface is after N meters of slip casting nozzle, and Grouting Pipe starts at the uniform velocity to be promoted, and at the same time slip casting, it is ensured that slip casting nozzle be in pulp surface with
Under, apart from N meters of pulp surface.
Further, it is as follows that packing volume method is calculated in S1；
A1, ground source well body product is calculated：
V1=S1*h1
Wherein：V1 is ground source well body product, and S1 is Di Yuan shaft bottoms area, and h is ground source well height；
A2, double U heat exchanger volumes are calculated：
V2=S2*h2*n
Wherein：V2 is double U heat exchanger volumes, and S2 is single heat exchanger floor space, and h2 is single heat exchanger length, and n is to change
Hot device radical；
A3, computational theory can return packing volume：
V3=V1-V2
Wherein：V3 can return packing volume for theory；
A4, calculating can actually return packing volume：
V=V3*80%
Wherein：V is that can actually return packing volume.
Further, the promotion speed of Grouting Pipe 3 is：
V=q-p/S1-S2*n
Wherein：V is the promotion speed of Grouting Pipe 3, and q is the slurry flow of known Grouting Pipe, and p is known Grouting Pipe 3
Aqueous flow in middle slurries, S1 are Di Yuan shaft bottoms area, and S2 is single heat exchanger floor space, and n is heat exchanger radical；
Grouting Pipe start promoted before stand-by period be：
T=(X+N)/V
Wherein：T is that Grouting Pipe 3 starts the stand-by period before being promoted, and X is the distance that Grouting Pipe 3 arrives shaft bottom, and N is Grouting Pipe
Distance of the mouth apart from pulp surface, V are the promotion speed of Grouting Pipe 3.
Embodiment 2
A kind of ground source well earth-filling method backfills construction using bottom slip casting, and Grouting Pipe 3 is inserted together with double U heat exchangers 5
Enter deep-well bottom, grout material is progressively former in discharge well upwards by the slurry of overflow from the upward high pressure grouting filling in deep-well bottom
Some air and moisture；Marginal not slurry side carries pipe, until ground source well head has grout material outflow, it was demonstrated that the backfill of entire deep-well is completed,
It has backfilled closely knit.
The speed of hoisting grouting pipe is that the volume inserted according to backfill material determines, as shared by the volume and heat exchanger of deep-well
Volume calculates the volume of backfill material, and the height of backfill material is calculated further according to the volume being backfilling into during slip casting in well, according to
The height of backfill material is that can determine the hoisting depth of Grouting Pipe.
Embodiment 3
As shown in Figure 2, Grouting Pipe 3 is inserted into 4 bottom of ground source well, 5 meters away from shaft bottom of slip casting nozzle with double U heat exchangers 5 together.
According to the volume shared by the volume of deep-well and heat exchanger, the volume of backfill material is calculated, backfill material is measured through filler
It is put into six times in mixer 1 after 6 metering of bucket, each equivalent, backfill material is close each time is all pumped into Di Yuanjing by grouting pump 2
After 4, backfill material is added in into mixer 1 from filler batch box 6 again.
The pipe-pulling speed of stringent control Grouting Pipe during slip casting, too air row is not net in easy well soon, and too slow filler holds
Underground pipe is easily squeezed, to ensure the degree of packing, has not noted preceding not tube drawing per tank material, is just started until the grouting of complete tank siccative finishes
Tube drawing, it is ensured that Grouting Pipe is embedded in below pulp surface.
According to calculating, a tank material about 0.2m has often been noted3Siccative pulls out about 15 meters in Grouting Pipe, backfill is calculated according to front
Expect volume, every mouthful of well takes around six tanks backfill material, and Grouting Pipe has 5 meters of height away from shaft bottom, for the first time 10 meters of tube drawing, second and third,
4th, five each 15 meters of tube drawings, for No. the 6th tube drawing not with rice number as controlling to picture, mortar to be seen overflows well head, then will note
It starches pipe all to extract, Grouting Pipe is equipped with 5 apparent scale marks, marks using red green spray painting.
Embodiment 4
By taking 100 meter source wells as an example：
Packing volume needed for S1, calculating adds in filler in mixer by several times；
Ground source well body product：V1=S*h=3.14* (0.146/2)2* 100=1.67m3,
Ground source well diameter 0.146m, deep 100m,
V1-ground source well body product m3
S-Di Yuan shaft bottoms area m2
H-ground source well height m
Double U heat exchanger volumes：V2=Sh*n=1/4*3.14* (0.025/2)2* 104=0.2m3,
Double U pipe diameters 0.025m, deep 104m,
V2-bis- U heat exchanger volumes m3
S-single heat exchanger floor space m2
H-single heat exchanger length m
N-heat exchanger radical, this project are 4,
V3=V1-V2=1.67-0.2=1.47m3
V3-can theoretically return packing volume m3
This is calculated as siccative volume, because backfill material need to add water to stir, therefore, siccative institute volume is the 80% of calculating total volume,
It is as qualified
Backfilling siccative volume is：1.47*0.8=1.2m3；
S2, Grouting Pipe are inserted into ground source bottom together with double U heat exchangers；
S3, grout material are filled by Grouting Pipe from the upward high pressure grouting in deep-well bottom；
S4, Grouting Pipe is stepped up, by the slurry of overflow, progressively discharges original air and moisture in well upwards；
Grouting pump is q=0.1m per second flow3(wherein the volume of water is 0.04m to/min3/min)
Because Di Yuan shaft bottoms area it is known that the height per minute filled out for h=(0.1-0.04)/
(3.14*(0.146/2)2)=3.6m/min, by double U heat exchangers floor space very littles in this present embodiment, so this
Ignore at place.
Because Grouting Pipe is away from bottom 5m, technique needs pipe below 5 meters of liquid level during slip casting, therefore,
10/3.6=2.7min, therefore after water pump 2.7 minutes is started, is carried pipe machine and carries pipe and carried out with v=3.6m/min speed
Pipe is carried, Grouting Pipe can be made to be constantly in below pulp surface 5m, it is ensured that Grouting Pipe is consistent with water pump injection speed, both will not be too fast, makes
Pipe is higher by liquid level, and Grouting Pipe will not also be made to be embedded in backfill material slowly excessively, and grouting pump backfills bolt special formula grouting pump for ground source well.
S5, up to ground source, well head has grout material outflow, completes the backfill of entire deep-well.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of ground source well backfills system, which is characterized in that including：Mixer (1), grouting pump (2), Grouting Pipe (3), double U are changed
Hot device (5) and pipe machine is carried, the mixer (1) and the grouting pump (2) connection, the grouting pump (2) and the Grouting Pipe (3)
One end connects, and Grouting Pipe (3) other end is connected with double U heat exchangers (5), described to carry pipe machine and the Grouting Pipe (3)
Connection, for promoting the Grouting Pipe (3).
2. ground as described in claim 1 source well backfills system, which is characterized in that filler batch box (6) is further included, for measuring
It is put into the backfilling material of the mixer (1).
3. ground as described in claim 1 source well backfills system, which is characterized in that further includes controller, the controller and institute
It states grouting pump (2) to connect with the pipe machine that carries, for controlling the grouting pump (2) and described carrying pipe machine.
4. ground as claimed in claim 3 source well backfills system, which is characterized in that the controller is PLC control system.
5. such as claim 1-4 any one of them source well backfill system, which is characterized in that the grouting pump (2) is screw rod
Formula grouting pump.
6. a kind of ground source well earth-filling method, which is characterized in that step is as follows：
Packing volume needed for S1, calculating adds in filler in mixer (1) by several times；
S2, Grouting Pipe (3) are inserted into ground source bottom with double U heat exchangers (5) together；
S3, grout material are filled by Grouting Pipe (3) from the upward high pressure grouting in deep-well bottom；
S4, Grouting Pipe (3) is stepped up, by the slurry of overflow, progressively discharges original air and moisture in well upwards；
S5, up to ground source, well head has grout material outflow, completes the backfill of entire deep-well.
7. ground as claimed in claim 6 source well earth-filling method, which is characterized in that the method for hoisting grouting pipe (3) carries for gradation
The method of liter, makes Grouting Pipe (3) apart from shaft bottom X meters, divides Y promotion, promotes Z meters every time.
8. ground as claimed in claim 6 source well earth-filling method, which is characterized in that the method for hoisting grouting pipe (3) carries for dynamic
The method of liter, Grouting Pipe (3) start slip casting, after pulp surface is apart from N meters of slip casting nozzle, Grouting Pipe starts at the uniform velocity to carry apart from shaft bottom X meters
It rises, and at the same time slip casting, it is ensured that slip casting nozzle is in below pulp surface, apart from N meters of pulp surface.
9. ground as claimed in claim 6 source well earth-filling method, which is characterized in that it is as follows that packing volume method is calculated in S1；
A1, ground source well body product is calculated：
V1=S1*h1
Wherein：V1 is ground source well body product, and S1 is Di Yuan shaft bottoms area, and h is ground source well height；
A2, double U heat exchanger volumes are calculated：
V2=S2*h2*n
Wherein：V2 is double U heat exchanger volumes, and S2 is single heat exchanger floor space, and h2 is single heat exchanger length, and n is heat exchanger
Radical；
A3, computational theory can return packing volume：
V3=V1-V2
Wherein：V3 can return packing volume for theory；
A4, calculating can actually return packing volume：
V=V3*80%
Wherein：V is that can actually return packing volume.
10. ground as claimed in claim 8 source well earth-filling method, which is characterized in that the promotion speed of Grouting Pipe (3) is：
V=(q-p)/(S1-S2*n)
Wherein：V is the promotion speed of Grouting Pipe (3), and q is the slurry flow of known Grouting Pipe, and p is known Grouting Pipe (3)
Aqueous flow in middle slurries, S1 are Di Yuan shaft bottoms area, and S2 is single heat exchanger floor space, and n is heat exchanger radical；
Grouting Pipe start promoted before stand-by period be：
T=(X+N)/V
Wherein：T is that Grouting Pipe (3) starts the stand-by period before being promoted, and X is the distance that Grouting Pipe (3) arrives shaft bottom, and N is Grouting Pipe
Distance of the mouth apart from pulp surface, V are the promotion speed of Grouting Pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350773.2A CN108104138A (en) | 2017-12-15 | 2017-12-15 | A kind of ground source well backfill system and earth-filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711350773.2A CN108104138A (en) | 2017-12-15 | 2017-12-15 | A kind of ground source well backfill system and earth-filling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108104138A true CN108104138A (en) | 2018-06-01 |
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ID=62216305
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711350773.2A Pending CN108104138A (en) | 2017-12-15 | 2017-12-15 | A kind of ground source well backfill system and earth-filling method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316860A (en) * | 1996-05-29 | 1997-12-09 | Nippon Steel Corp | Excavated groove earth retaining method in construction method of underground buried pipe |
| CN1887778A (en) * | 2006-04-17 | 2007-01-03 | 山东建筑大学 | Backfill to buried pipe heat exchanger through hole |
| CN104631463A (en) * | 2015-01-14 | 2015-05-20 | 武汉东方建设集团有限公司 | Ground source heat pump deep well backfill grouting method |
| CN105927271A (en) * | 2016-06-15 | 2016-09-07 | 青岛建设集团有限公司 | Grouting backfilling system and grouting backfilling method for vertical shafts in vertical heat exchangers |
| CN207794101U (en) * | 2017-12-15 | 2018-08-31 | 大连中盈能源管理有限公司 | A kind of ground source well backfills system |
-
2017
- 2017-12-15 CN CN201711350773.2A patent/CN108104138A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09316860A (en) * | 1996-05-29 | 1997-12-09 | Nippon Steel Corp | Excavated groove earth retaining method in construction method of underground buried pipe |
| CN1887778A (en) * | 2006-04-17 | 2007-01-03 | 山东建筑大学 | Backfill to buried pipe heat exchanger through hole |
| CN104631463A (en) * | 2015-01-14 | 2015-05-20 | 武汉东方建设集团有限公司 | Ground source heat pump deep well backfill grouting method |
| CN105927271A (en) * | 2016-06-15 | 2016-09-07 | 青岛建设集团有限公司 | Grouting backfilling system and grouting backfilling method for vertical shafts in vertical heat exchangers |
| CN207794101U (en) * | 2017-12-15 | 2018-08-31 | 大连中盈能源管理有限公司 | A kind of ground source well backfills system |
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Application publication date: 20180601 |