CN106958447A - It is a kind of that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall - Google Patents
It is a kind of that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall Download PDFInfo
- Publication number
- CN106958447A CN106958447A CN201710095876.2A CN201710095876A CN106958447A CN 106958447 A CN106958447 A CN 106958447A CN 201710095876 A CN201710095876 A CN 201710095876A CN 106958447 A CN106958447 A CN 106958447A
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- China
- Prior art keywords
- steam
- borehole wall
- curing
- freezing shaft
- shaft concrete
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
Abstract
The present invention discloses a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, including steam curing cylinder and steam generator, curing in airtight condition space is formed between the steam curing cylinder and the borehole wall, steam pipeline is installed on the steam (vapor) outlet of the steam generator, the steam pipeline is turned on by steam air flue and the curing in airtight condition space fluid, the present invention produces steam using steam generator, maintenance can be heated and be humidified to the freezing shaft concrete ectonexine borehole wall, ensure the temperature and wettability of the freezing shaft concrete ectonexine borehole wall；Using the aeration ring of quality of rubber materials, it is ensured that the sealing between curing means and the pit shaft borehole wall, the inflation nozzle being connected with air line in pit shaft is provided with aeration ring, without specially connecting gas ducting, resource is saved；Temperature Humidity Sensor is set in maintenance space, the humiture of maintenance interior volume can be detected in time.
Description
Technical field
The present invention relates to underground mine engineer technical field of construction；More particularly, to a kind of to freezing shaft concrete
The ectonexine borehole wall carries out steam-cured device.
Background technology
At present, freezing shaft outer shaft wall does not do any maintenance, Air Temperature in pit shaft during being tunneled due to freezing shaft
Degree is relatively low, is just directly exposed after the outer shaft wall demoulding in relatively low environment temperature, borehole wall aquation heat leakage is very fast, in outer wall coagulation
Native inside easily forms larger thermograde, under temperature stress and Action of Gravity Field, and the easily development of outer wall concrete forms ring
Crack；Freezing shaft inner layer well wall thickness is larger, especially major diameter vertical bottom inner layer well wall, and strength grade is high, and thickness is big, is
Mass concrete, after inwall concreting, the heat of hydration largely discharges in the short time, and shaft in wall surface can not accomplish to cover
Layer maintenance, takes watering spray to carry out maintaining process to the borehole wall more, and temperature is had taken up in inwall maintenance in spite of many mines
Water curing, but because spray-water consumption is a large amount of, warm water, which is persistently supplied, has certain difficulty, and water temperature control has suitable difficulty, with
Occur directly directly washing away borehole wall phenomenon using cold water as normal, so artificially formed with surface in inwall inside concrete region
The larger temperature difference, causes inner wall surface more tiny thermal cracking occur, influences borehole wall quality；At present, there is shaft in wall table
Face is conserved using foam：Patent No. " 2015103528875 ", patent name are " freezing shaft concrete inner layer borehole wall foam
Curing means ", can solve directly to use cold water directly wash away the borehole wall cause internal-wall concrete region artificially formed with surface compared with
The big temperature difference, causes the problem of more tiny thermal cracking occurs in inner wall surface, but the shortcoming for using foam to conserve is：
Because in form removal disk position adjustment, curing means can be with moving up and down, when maintenance cylinder is descending in pit shaft, wire brush
Bristle is often easily scratched with the borehole wall so that bristles bend or fracture, so as to influence the effect of fitting of wire brush and the borehole wall, is sealed
Performance is bad, and then makes foam solution consumption excessive；And foam needs fine configuration, the maintenance effect that can be only achieved is caused
Man power and material's cost can increase.
The content of the invention
Freezing shaft outer shaft wall and inner layer well wall concrete can be entered it is an object of the present invention to provide one kind
Row maintenance so that Temperature and Humidity Control is simple and convenient during the maintenance borehole wall, sealing is good and saves the steam of human and material resources
The device of maintenance.
To reach above-mentioned purpose, the present invention uses following technical proposals：
It is a kind of that steam-cured device, including steam curing cylinder and steam are carried out to the freezing shaft concrete ectonexine borehole wall
Generator, forms on curing in airtight condition space, the steam (vapor) outlet of the steam generator between the steam curing cylinder and the borehole wall and pacifies
Equipped with steam pipeline, the steam pipeline is turned on by steam air flue and the curing in airtight condition space fluid；Steam generation
Device possesses production steam and humidification function, the freezing shaft concrete ectonexine borehole wall can be heated and humidified simultaneously, and
And the function of thering is reliable electric leakage, ground protection and water shortage to automatically power off.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the steam curing cylinder bag
Include sealing mechanism, lower sealing mechanism and inner seal mechanism, the upper sealing mechanism, the lower sealing mechanism, the inner side
The curing in airtight condition space is formed between sealing mechanism and the borehole wall.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the upper sealing mechanism bag
One or more aeration rings are included, the lower sealing mechanism includes one or more aeration rings；The aeration ring is located at the inner side
Between sealing mechanism and the borehole wall；And be tightly fastened with the inner seal mechanism；It can be realized using multiple aeration rings multiple close
Envelope so that sealing effectiveness is more preferable.
Above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the aeration ring is rubber
Aeration ring, inflated rubber circle is flexible, can automatically adjust shape at any time according to the rough and uneven in surface of the borehole wall, keep always with well
It is brought into close contact between wall, sealing property is fabulous；Inflation nozzle and releasing pressure automatically vent valve are provided with the inflated rubber circle；Work as institute
When stating inflated rubber circle inner inflatable and expanding more than certain pressure, the releasing pressure automatically vent valve starts to deflate, it is ensured that the rubber
Glue aeration ring uses safety.
Above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the inflation nozzle passes through ore deposit
With air line fluid communication in snap joint and freezing shaft；Without still further connecting loading line, resource is saved.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the inner seal mechanism
Including Rod Bracing circle and side seal, together with the side seal is relatively fixed with the Rod Bracing circle；Using round steel
Bracing ring keeps the face shaping of maintenance cylinder.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the inner seal mechanism
It is connected below hanging scaffold or form removal disk, and with the hanging scaffold or the form removal disk.
Above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the side seal is
The bottom of PVC protective cloths, the hanging scaffold or the form removal disk is provided with maintenance cylinder hanging circle, the upper edge of the PVC protective cloths
It is connected with the maintenance cylinder hanging circle；With good sealing, prevent steam leakage and be free to folded.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the side seal bottom
Channel-section steel foundation ring is provided with, the side seal bottom sides edge is fixedly connected with the channel-section steel foundation ring, the hanging scaffold or the form removal
The bottom of disk is provided with suspention lockset hanging ring, and the channel-section steel foundation ring passes through suspending steel wire rope or iron chains with the suspention lockset hanging ring
Connection, one end of the suspending steel wire rope or iron chains is fixedly connected with the channel-section steel foundation ring, the suspending steel wire rope or iron chains
The reel connection of the other end and hoist engine；It is installed with platform on the inside of the channel-section steel foundation ring, the platform is from the channel-section steel bottom
The inner side edge of circle extends along to the radial center of the channel-section steel foundation ring, and the steam generator is laid on the platform；It is described
Steam generator is connected by hanging steel rope and water pipe with the hanging scaffold or the form removal disk；The channel-section steel foundation ring and the well
Channel-section steel crash-proof bracket is provided between wall；For preventing the cylinder of steam curing described in form removal disk lifting process side too close to well
Wall, and the situation that respective side is separated with the borehole wall occurs.
It is above-mentioned a kind of to the steam-cured device of freezing shaft concrete ectonexine borehole wall progress, the curing in airtight condition space
Temperature and Humidity sensor is inside provided with, the humiture to monitor the curing in airtight condition space, the Temperature and Humidity sensing
The output end of device and PLC input are connected, and the control signal output of the PLC passes through cable and the steam generator
Control signal input is connected；The PLC is arranged on the hanging scaffold or the form removal disk；On the hanging scaffold or the form removal disk
Offer normally closed maintenance channel mouthful.
Beneficial effects of the present invention are as follows：
The a kind of of the present invention carries out steam-cured device to the freezing shaft concrete ectonexine borehole wall, using steam curing
Mode, can be conserved to the freezing shaft concrete ectonexine borehole wall, steam curing apparatus production steam, to freezing shaft
The concrete ectonexine borehole wall is heated and humidified, it is ensured that the temperature and wettability of the freezing shaft concrete ectonexine borehole wall；Adopt
With the aeration ring of quality of rubber materials, it is ensured that the sealing of curing means and the pit shaft borehole wall, it is provided with aeration ring and pit shaft
The inflation nozzle of interior air line connection, without specially connecting gas ducting, saves resource；Humiture is set to pass in maintenance space
Sensor, the humiture of maintenance interior volume can be detected in time；And steam curing apparatus can as needed be adjusted with folded
The entire length of whole steam curing apparatus.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is a kind of outer shaft wall concrete that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall
The overall structure diagram of steam curing apparatus.
Fig. 2 is a kind of inner layer well wall concrete that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall
The overall structure diagram of steam curing apparatus.
Fig. 3 is a kind of inner seal mechanism knot that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall
Structure schematic diagram.
In figure：1- steam generators, the 2- boreholes wall, 3- curing in airtight condition space, 4- maintenance cylinder hanging circles, 5- steam pipelines,
Sealing mechanism under the upper sealing mechanisms of 6-, 7-, 8-PVC protective cloths, 9- inflation nozzles, 10- releasing pressure automatically vent valves, 11- Rod Bracings
Circle, 12- suspention lockset hanging rings, 13- cables, 14- channel-section steels foundation ring, 15- channel-section steel crash-proof brackets, 16- Temperature and Humidity sensors,
17- platforms, 18-PLC, 19- hanging scaffolds, 20- form removal disks, 21- air lines, 22- maintenance channels mouthful, 23- suspending steel wire ropes or iron
Chain, 24- outer wall templates, 25- inner wall forms, 26- hanging steel ropes and water pipe.
Embodiment
In order to illustrate more clearly of the present invention, the present invention is done further with reference to preferred embodiments and drawings
It is bright.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
As shown in Figure 1, 2, 3, the present embodiment is a kind of steam-cured to the progress of the freezing shaft concrete ectonexine borehole wall
Device, including steam curing cylinder and steam generator 1, curing in airtight condition space 3 is formed between the steam curing cylinder and the borehole wall 2,
Steam pipeline 5 is installed, the steam pipeline 5 passes through steam air flue 4 and institute on the steam (vapor) outlet of the steam generator 1
State the fluid communication of curing in airtight condition space 3；The steam curing cylinder includes upper sealing mechanism 6, lower sealing mechanism 7 and inner seal machine
Structure, forms described closed foster between the upper sealing mechanism 6, the lower sealing mechanism 7, the inner seal mechanism and the borehole wall 2
Protect space 3；The upper sealing mechanism 6 includes one or more aeration rings, and the lower sealing mechanism 7 includes one or more inflations
Circle；The aeration ring is located between the inner seal mechanism and the borehole wall 2, and the aeration ring is simultaneously tight with the inner seal mechanism
Close fixation；The aeration ring is to be provided with inflation nozzle 9 and releasing pressure automatically vent valve on inflated rubber circle, the inflated rubber circle
10；The inflation nozzle 9 passes through the fluid communication of air line 21 in mining snap joint and freezing shaft.
The inner seal mechanism includes Rod Bracing circle 11 and side seal, the side seal and the Rod Bracing
Circle 11 is relatively fixed together；The inner seal mechanism is located at below hanging scaffold 19 or form removal disk 20, and with the hanging scaffold 19
Or the form removal disk 20 is connected；The side seal is the bottom peace of PVC protective cloths 8, the hanging scaffold 19 or the form removal disk 20
Equipped with maintenance cylinder hanging circle 4, the upper edge of the PVC protective cloths 8 is connected with the maintenance cylinder hanging circle 4；The side seal
Bottom is provided with channel-section steel foundation ring 14, and the side seal bottom sides edge is fixedly connected with the channel-section steel foundation ring 14, the hanging scaffold 19
Or the bottom of the form removal disk 20 is provided with suspention lockset hanging ring 12, the channel-section steel foundation ring 14 leads to the suspention lockset hanging ring 12
Cross suspending steel wire rope or iron chains 23 is connected, one end of the suspending steel wire rope or iron chains 23 is fixed with the channel-section steel foundation ring 14 to be connected
Connect, the other end of the suspending steel wire rope or iron chains 23 and the reel of hoist engine are connected；The fixed peace in the inner side of channel-section steel foundation ring 14
Equipped with platform 17, the platform 17 prolongs from the inner side edge of the channel-section steel foundation ring 14 along the radial center to the channel-section steel foundation ring 14
Stretch, the steam generator 1 is placed on the platform 17；The steam generator 1 by hanging steel rope and water pipe 26 with
The hanging scaffold 19 or the form removal disk 20 are connected；Channel-section steel crash-proof bracket is provided between the channel-section steel foundation ring 14 and the borehole wall 2
15；Temperature and Humidity sensor 16, the output end of the Temperature and Humidity sensor 16 are provided with the curing in airtight condition space 3
It is connected with PLC18 input, the control signal output of the PLC18 passes through the control of cable 13 and the steam generator 1
Signal input part connection processed；The PLC18 is arranged on the hanging scaffold 19 or the form removal disk 20；The hanging scaffold 19 described is torn open
Normally closed maintenance channel mouthful 22 is offered on mould 20.
As shown in Figure 1, 2, the freezing shaft concrete ectonexine borehole wall is entered using the steam-cured device of the present embodiment
The step of row steam curing：
(1) inflation nozzle 9 on aeration ring is quickly connected by mining snap joint with the air line 21 in freezing shaft,
Realize and aeration ring is inflated, aeration ring is closely fitted on the borehole wall 2 and side seal after inflation so that upper inflation
The curing in airtight condition space 3 of annular is formed between circle, lower aeration ring, the borehole wall 2 and side seal, when the expansion of aeration ring inner inflatable is super
When crossing certain pressure, the releasing pressure automatically vent valve 10 on aeration ring will start automatic deflation, it is ensured that aeration ring uses safety.
(2) steam generator 1 is opened, the steam that steam generator 1 is produced passes sequentially through the steam pipeline 5 and described
Steam air flue enters in curing in airtight condition space 3 and carries out steam curing, the steam to the freezing shaft concrete ectonexine borehole wall
Generator 1 has reliable electric leakage and ground protection, and with water shortage automatic circuit break function.
(3) temperature and humidity in curing in airtight condition space 3 is detected by temperature-humidity monitoring sensor 16, and handle is detected
Data feedback to PLC18, when humiture is less than PLC18 setting value, PLC18 will automatic steam generator 1, when
When humiture reaches PLC18 setting value, PLC18 then can steam off generator 1 automatically, realization is automatically controlled.
(4) hanging scaffold 19 or the form removal disk 20 drive steam curing cylinder to be conserved up or down in freezing shaft
The inside and outside layer borehole wall 2, when running into the position for having depression inside the borehole wall 2, the reduction of aeration ring air pressure inside, at this moment inflation nozzle 9 will be certainly
It is dynamic that aeration ring is inflated so that aeration ring is brought into close contact with the borehole wall 2 all the time；When running into the position for having projection inside the borehole wall 2, fill
Air ring air pressure inside increase, at this moment releasing pressure automatically vent valve 10 will automatic deflation, not only cause aeration ring protected all the time with the borehole wall 2
The laminating of equal extent is held, and aeration ring will not be damaged due to extruding.
(5) after maintenance is finished, hoist engine is started, the reel of hoist engine winds the suspending steel wire rope or iron chains 23 so that
The relatively described hanging scaffold 19 in the channel-section steel foundation ring 14 or the form removal disk 20 are moved upwards, so that PVC protective cloths 8 are folded up,
The folded of maintenance cylinder can be realized, the length of maintenance cylinder can be adjusted as needed in practice of construction.
Obviously, the above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not pair
The restriction of embodiments of the present invention, for those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms, all embodiments can not be exhaustive here, it is every to belong to this hair
Row of the obvious change or variation that bright technical scheme is extended out still in protection scope of the present invention.
Claims (10)
1. a kind of carry out steam-cured device to the freezing shaft concrete ectonexine borehole wall, it is characterised in that is supported including steam
Casing and steam generator (1), form curing in airtight condition space (3), the steam hair between the steam curing cylinder and the borehole wall (2)
Steam pipeline (5) is installed on the steam (vapor) outlet of raw device (1), the steam pipeline (5) by steam air flue with it is described close
Close maintenance space (3) fluid communication.
2. it is according to claim 1 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the steam curing cylinder includes upper sealing mechanism (6), lower sealing mechanism (7) and inner seal mechanism, described close
The curing in airtight condition space is formed between sealing mechanism (6), the lower sealing mechanism (7), the inner seal mechanism and the borehole wall (2)
(3)。
3. it is according to claim 2 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the upper sealing mechanism (6) includes one or more aeration rings, the lower sealing mechanism (7) includes one or many
Individual aeration ring；The aeration ring is located between the inner seal mechanism and the borehole wall (2), and close with the inner seal mechanism
It is fixed.
4. it is according to claim 3 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the aeration ring is that inflation nozzle (9) and releasing pressure automatically deflation are provided with inflated rubber circle, the inflated rubber circle
Valve (10).
5. it is according to claim 4 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the inflation nozzle (9) passes through air line (21) fluid communication in mining snap joint and freezing shaft.
6. it is according to claim 2 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the inner seal mechanism includes Rod Bracing circle (11) and side seal, the side seal and the round steel
Bracing ring (11) is relatively fixed together.
7. it is according to claim 6 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
Be characterised by, the inner seal mechanism is located at hanging scaffold (19) or form removal disk (20) below, and with the hanging scaffold (19) or institute
State form removal disk (20) connection.
8. it is according to claim 7 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the side seal is PVC protective cloths (8), the bottom of the hanging scaffold (19) or the form removal disk (20) is provided with
Cylinder hanging circle (4) is conserved, the upper edge of the PVC protective cloths (8) is connected with the maintenance cylinder hanging circle (4).
9. it is according to claim 8 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, the side seal bottom is provided with channel-section steel foundation ring (14), the side seal bottom sides edge and the channel-section steel bottom
Circle (14) is fixedly connected, and the bottom of the hanging scaffold (19) or the form removal disk (20) is provided with suspention lockset hanging ring (12), described
Channel-section steel foundation ring (14) is connected with the suspention lockset hanging ring (12) by suspending steel wire rope or iron chains (23), the suspending steel wire rope
Or one end of iron chains (23) is fixedly connected with the channel-section steel foundation ring (14), the other end of the suspending steel wire rope or iron chains (23) with
The reel connection of hoist engine；It is installed with platform (17) on the inside of the channel-section steel foundation ring (14), the platform (17) is from the groove
The inner side edge of steel foundation ring (14) extends along to the radial center of the channel-section steel foundation ring (14), and the steam generator (1) is placed in
On the platform (17)；The steam generator (1) passes through hanging steel rope and water pipe (26) and the hanging scaffold (19) or described
Form removal disk (20) is connected；Channel-section steel crash-proof bracket (15) is provided between the channel-section steel foundation ring (14) and the borehole wall (2).
10. it is according to claim 9 it is a kind of steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall, its
It is characterised by, Temperature and Humidity sensor (16), the Temperature and Humidity sensor is provided with the curing in airtight condition space (3)
(16) output end is connected with the input of PLC (18), and the control signal output of the PLC (18) passes through cable (13) and institute
State the control signal input connection of steam generator (1)；The PLC (18) is arranged on the hanging scaffold (19) or the form removal disk
(20) on；Normally closed maintenance channel mouthful (22) is offered on the hanging scaffold (19) or the form removal disk (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611187395 | 2016-12-20 | ||
| CN2016111873956 | 2016-12-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106958447A true CN106958447A (en) | 2017-07-18 |
| CN106958447B CN106958447B (en) | 2020-05-01 |
Family
ID=59480954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710095876.2A Active CN106958447B (en) | 2016-12-20 | 2017-02-22 | Device for carrying out steam curing on inner and outer layer well walls of frozen shaft concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106958447B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982594A (en) * | 2021-11-08 | 2022-01-28 | 安徽理工大学 | Autoclaved curing device and method for manufacturing and autoclaved curing ultrahigh-strength well wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011047111A (en) * | 2009-08-25 | 2011-03-10 | Jfe Civil Engineering & Construction Corp | Method for constructing concrete wall formed on inner wall surface of vertical shaft |
| CN104948193A (en) * | 2015-06-24 | 2015-09-30 | 内蒙古伊泰广联煤有限责任公司 | Maintenance for foam in inner-layer well wall concrete of freezing shaft |
| CN206477851U (en) * | 2016-12-20 | 2017-09-08 | 内蒙古伊泰广联煤化有限责任公司 | It is a kind of that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall |
-
2017
- 2017-02-22 CN CN201710095876.2A patent/CN106958447B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011047111A (en) * | 2009-08-25 | 2011-03-10 | Jfe Civil Engineering & Construction Corp | Method for constructing concrete wall formed on inner wall surface of vertical shaft |
| CN104948193A (en) * | 2015-06-24 | 2015-09-30 | 内蒙古伊泰广联煤有限责任公司 | Maintenance for foam in inner-layer well wall concrete of freezing shaft |
| CN206477851U (en) * | 2016-12-20 | 2017-09-08 | 内蒙古伊泰广联煤化有限责任公司 | It is a kind of that steam-cured device is carried out to the freezing shaft concrete ectonexine borehole wall |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982594A (en) * | 2021-11-08 | 2022-01-28 | 安徽理工大学 | Autoclaved curing device and method for manufacturing and autoclaved curing ultrahigh-strength well wall |
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| Publication number | Publication date |
|---|---|
| CN106958447B (en) | 2020-05-01 |
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