CN104832180A - Subway interconnecting passage freezing method construction high-efficiency auxiliary cooling method - Google Patents
Subway interconnecting passage freezing method construction high-efficiency auxiliary cooling method Download PDFInfo
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- CN104832180A CN104832180A CN201510186011.8A CN201510186011A CN104832180A CN 104832180 A CN104832180 A CN 104832180A CN 201510186011 A CN201510186011 A CN 201510186011A CN 104832180 A CN104832180 A CN 104832180A
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- Prior art keywords
- cold type
- concrete pipe
- type pipe
- straight tube
- axial straight
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Links
- 238000007710 freezing Methods 0.000 title claims abstract description 44
- 230000008014 freezing Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000001816 cooling Methods 0.000 title abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 238000010792 warming Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 239000004604 Blowing Agent Substances 0.000 claims description 7
- 238000013022 venting Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000004927 clay Substances 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000012267 brine Substances 0.000 description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
- E21D9/002—Injection methods characterised by the chemical composition used
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a subway interconnecting passage freezing method construction auxiliary cooling device comprising cold row pipes which are laid on the internal wall of tunnel concrete pipe sheets. The coil row pipes are composed of axial straight pipes and circumferential arced pipes. The axial straight pipes are downwardly laid in parallel from the top part of the concrete pipe sheets along the axial direction of the concrete pipe sheets with certain spacing distance. The circumferential arced pipes are welded at the two ends of each axial straight pipe. The circumferential arced pipes are laid in parallel along the circumferential direction of the concrete pipe sheets with a certain spacing distance. The two adjacent circumferential arced pipes are connected via a high pressure rubber pipe. The invention also discloses a subway interconnecting passage freezing method construction auxiliary cooling method. Rapid auxiliary cooling is performed on a soil layer behind the pipe sheets by performing the steps that laying amount of the cold row pipes required to be laid in the opposite side tunnel of a main freezing surface on which freezing holes is positioned is calculated, the cold row pipes are laid, cold row pipe striking and pressing testing is performed, temperature measuring points are laid, heat conducting clay is filled and thermal insulation of the cold row pipes is performed. The overall stability and water sealing performance of a frozen soil curtain and safety of the project are enhanced by the subway interconnecting passage freezing method construction auxiliary cooling device and method.
Description
Technical field
The present invention relates to a kind of auxiliary temperature-reducing device and method of Metro Connection Passage construction freezing method.
Background technology
Metro Connection Passage refers to the lateral connection road between subway up-downgoing threaded list road, and its effect runs into emergency for passenger to shift from the tunnel that meets accident to another secure tunnel.Service channel construction freezing method technology; refer to before construction underground structure; by the method for artificial cooling; structure surrounding aqueous stratum is freezed; formed and there is interim carrying and impermeable role and the frost wall meeting engineering construction safety needs, under the protective effect of frost wall, then carry out a kind of construction method that block operation dug by structure.At present, service channel construction freezing method technology is all used widely on the stratum such as moisture weak soil, moisture decomposed rock in city, achieves good economic benefit and social benefit.
Current conventional Metro Connection Passage construction freezing method, consider Frozen Soil Cylinder development speed and cost, many employings be one-sided freezing hole freeze design, and offside easily dispels the heat due to concrete pipe sheet soil layer relative to steel pipe sheet, the cooling rate of the soil body near tunnel duct piece can be affected, thus affect resistance to overturning and the water shutoff of Frozen Soil Cylinder, very large potential risk and harm is brought to engineering, so do not increasing in the design basis of freezing hole, a kind of efficient Insulation is being adopted to be urgent required to improve the freezing efficiency of offside.
Summary of the invention
The resistance to overturning and the water shutoff that the object of the invention is the Frozen Soil Cylinder for solving current Metro Connection Passage construction freezing method one-sided freezing hole freeze design are poor, there is the technical problem of potential security risk.
In order to solve the problems of the technologies described above, the invention provides a kind of auxiliary temperature-reducing device of Metro Connection Passage construction freezing method, described auxiliary temperature-reducing device is located at that freezing hole place is main freezes in the offside tunnel in face, is included in the cold type pipe that tunnel concrete pipe sheet inwall lays; Described cold type pipe is made up of axial straight tube and circumferential arc tube, axial straight tube axially lays with certain spacing downwards from concrete pipe sheet top side by side along concrete pipe sheet, from topmost successively down until the length of the axial straight tube of foot is successively decreased, circumferential arc tube is welded with at the axial straight tube two ends of every root, the circular arc outer diameter of circumference arc tube is identical with the internal diameter of concrete pipe sheet, circumference arc tube lays along concrete pipe sheet circumferencial direction side by side with certain spacing, is connected between adjacent two circumferential arc tubes by high-pressure rubber pipe; On straight tube, venting ball valve is provided with for discharging cold type inner air tube in top axle.
Further, described cold type pipe with the longitudinal centre line of described service channel for axis of symmetry symmetry is laid.
Further, between described axial straight tube and between circumferential arc tube, be filled with heat-conducting daub even uniform.
Further, be equipped with warming plate at described cold type pipe and heat-conducting daub upper surface, adjacent warming plate junction is marked with the blowing agent of isolated air flowing.
Further, described warming plate thickness is 50mm.
Further, the steel plate that described cold type pipe welds 3mm thick by the channel-section steel openend of waist height 75mm is made.
In order to solve the problems of the technologies described above, the present invention also provides a kind of auxiliary temperature-reducing method of Metro Connection Passage construction freezing method, comprises the steps:
(1) calculating need be located at the main amount of laying freezing cold type pipe in the offside tunnel in face in freezing hole place: the thickness first determining service channel Frozen Soil Cylinder vault and tunnel concrete pipe sheet junction Frozen Soil Cylinder, thickness gauge calculates the transfer area of service channel Frozen Soil Cylinder vault and side wall Frozen Soil Cylinder and tunnel concrete pipe sheet accordingly, refrigerating capacity accordingly needed for transfer area calculating, the cold type pipe amount of laying accordingly needed for refrigerating capacity calculating;
(2) lay cold type pipe: hole on tunnel concrete pipe sheet inwall, fixed expansion screw in hole, cold type pipe is fixed on tunnel concrete pipe sheet by setscrew; Described cold type pipe is made up of axial straight tube and circumferential arc tube, axial straight tube axially lays with certain spacing downwards from concrete pipe sheet top side by side along concrete pipe sheet, from topmost successively down until the length of the axial straight tube of foot is successively decreased, circumferential arc tube is welded with at the axial straight tube two ends of every root, the circular arc outer diameter of circumference arc tube is identical with the internal diameter of concrete pipe sheet, circumference arc tube lays along concrete pipe sheet circumferencial direction side by side with certain spacing, is connected between adjacent two circumferential arc tubes by high-pressure rubber pipe; On straight tube, venting ball valve is provided with for discharging cold type inner air tube in top axle;
(3) test suppressed by cold type pipe: use suds to carry out suppressing test, check whether the high-pressure rubber pipe junction between the commissure that axial straight tube and circumferential arc tube connect and circumferential arc tube exists leak source, test pressure value is 0.8MPa, and voltage stabilizing does not fall pressure for 30 minutes for qualified;
(4) point for measuring temperature is laid: evenly lay temperature probe at concrete pipe sheet top and sidewall, wherein top is no less than 3, and sidewall is no less than 2;
(5) fill heat-conducting daub: between axial straight tube and between circumferential arc tube, fill heat-conducting daub even uniform;
(6) cold type pipe insulation: lay warming plate at cold type pipe and heat-conducting daub upper surface, the blowing agent of isolated air flowing is injected in adjacent warming plate junction.
Further, step (1) described cold type pipe with the longitudinal centre line of described service channel for axis of symmetry symmetry is laid.
Further, the described warming plate thickness of step (6) is 50mm.
Further, the steel plate that step (1) described cold type pipe welds 3mm thick by the channel-section steel openend of waist height 75mm is made.
The present invention is on the basis of existing freeze design, add the parts such as cold type pipe, heat-conducting daub, blowing agent, warming plate, temperature probe, through reasonably assembling, by controlling the refrigerating capacity of refrigerating battery, improve resistance to overturning and the safety of service channel frozen construction Frozen Soil Cylinder.The chilled brine supply of cold type pipe is realized by open-work with recovery, is incorporated in the collection in offside tunnel, brine distributing ring, thus incorporates whole freeze cycle loop.After access brine recycling, in reply cold type pipe, the flow of salt solution is monitored.By the control to brine flow and temperature, freezing hole can be assisted to make soil layer quick freezing after concrete pipe sheet, improve resistance to overturning and the water shutoff of Frozen Soil Cylinder, improve the safety of engineering.
Accompanying drawing explanation
Fig. 1 is the tunnel radial cross-section of laying cold type pipe;
Fig. 2 is the axial sectional view in tunnel laying cold type pipe.
In figure: 1 tunnel concrete pipe sheet; 101 section of jurisdiction seams; 2 cold type pipes; 201 axial straight tubes; 202 circumferential arc tubes; 203 high-pressure rubber pipes; 3 soil layers; 4 heat-conducting daubs; 5 service channel longitudinal centre lines; 6 venting ball valves.
Detailed description of the invention
The present invention is further detailed explanation in conjunction with the accompanying drawings and embodiments now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention, and it should not be construed as limitation of the present invention.
As shown in Figure 1-2, auxiliary temperature-reducing device of the present invention is included in the cold type pipe 2 that tunnel concrete pipe sheet 1 inwall lays, cold type pipe 2 is with the longitudinal centre line 5 of service channel for axis of symmetry symmetry is laid, and the steel plate that cold type pipe 2 welds 3mm thick by the channel-section steel openend of waist height 75mm is made, cold type pipe 2 is made up of axial straight tube 201 and circumferential arc tube 201, axial straight tube 201 axially lays with certain spacing downwards from concrete pipe sheet 1 top side by side along concrete pipe sheet 1, from topmost successively down until the length of the axial straight tube 201 of foot is successively decreased, circumferential arc tube 202 is welded with at axial straight tube 201 two ends of every root, the circular arc outer diameter of circumference arc tube 202 is identical with the internal diameter of concrete pipe sheet 1, circumference arc tube 202 lays along concrete pipe sheet 1 circumferencial direction side by side with certain spacing, connected by high-pressure rubber pipe 203 between adjacent two circumferential arc tubes 202, on straight tube 201, venting ball valve 6 is provided with for discharging air in cold type pipe 2 in top axle.Be filled with heat-conducting daub 4 between axial straight tube 201 and between circumferential arc tube 202 even uniform.Be equipped with at the upper surface of cold type pipe 2 and heat-conducting daub 4 warming plate that thickness is 50mm, adjacent warming plate junction is marked with the blowing agent of isolated air flowing.
Auxiliary temperature-reducing method of the present invention comprises the steps:
(1) calculating need be located at the main amount of laying freezing cold type pipe 2 in the offside tunnel in face in freezing hole place: the thickness first determining service channel Frozen Soil Cylinder vault and tunnel concrete pipe sheet 1 junction Frozen Soil Cylinder, thickness gauge calculates the transfer area of service channel Frozen Soil Cylinder vault and side wall Frozen Soil Cylinder and tunnel concrete pipe sheet 1 accordingly, refrigerating capacity accordingly needed for transfer area calculating, refrigerating capacity calculates required cold type pipe 2 amount of laying and the size of cold type pipe 2 accordingly, and computational process is shown below;
Q＝300(L
1d
1+2L
1d
2)；
Q＝Q
g＝qA；
In formula: Q is section of jurisdiction heat-sinking capability, kJ/h;
Qg is the total heat absorption capacity of freezing pipe, kJ/h;
L1, L2 are section of jurisdiction lay length in frozen region, and m, is determined by freeze design.
D1, d2 are for being respectively vault and side wall Frozen Soil Cylinder thickness, and m, is determined by freeze design.
Q is freezing pipe heat absorption coefficient, desirable 1047 ~ 1172kJ/m
2h;
A is freezing pipe total surface area, m
2.
(2) cold type pipe 2 is laid: hole on tunnel concrete pipe sheet 1 inwall, fixed expansion screw in hole, cold type pipe 2 is fixed on tunnel concrete pipe sheet 1 by setscrew, cold type pipe 2 with the longitudinal centre line 5 of service channel for axis of symmetry symmetry is laid, the required chip length covered is determined by the Frozen Soil Cylinder thickness of freeze design, usually lays each ring in frozen region and left and right, the steel plate that cold type pipe 2 welds 3mm thick by the channel-section steel openend of waist height 75mm is made, cold type pipe 2 is made up of axial straight tube 201 and circumferential arc tube 201, axial straight tube 201 axially lays with certain spacing downwards from concrete pipe sheet 1 top side by side along concrete pipe sheet 1, from topmost successively down until the length of the axial straight tube 201 of foot is successively decreased, circumferential arc tube 202 is welded with at axial straight tube 201 two ends of every root, the circular arc outer diameter of circumference arc tube 201 is identical with the internal diameter of concrete pipe sheet 1, circumference arc tube 201 lays along concrete pipe sheet 1 circumferencial direction side by side with certain spacing, connected by high-pressure rubber pipe 203 between adjacent two circumferential arc tubes 201, in top axle, venting ball valve 6 is set on straight tube 201 for discharging air in cold type pipe 2,
(3) test suppressed by cold type pipe 2: use suds to carry out suppressing test, check whether high-pressure rubber pipe 203 junction between the commissure that axial straight tube 201 and circumferential arc tube 201 connect and circumferential arc tube 202 exists leak source, test pressure value is 0.8MPa, and voltage stabilizing does not fall pressure for 30 minutes for qualified;
(4) lay point for measuring temperature: be uniformly distributed temperature probe at concrete pipe sheet 1 top and sidewall, lay lower the temperature temperature in region and cold of cold type pipe 2 for Simultaneous Monitoring and control, wherein 3, top or 4, sidewall 2 or 3;
(5) fill heat-conducting daub 4: between axial straight tube 201 and between circumferential arc tube 202, fill heat-conducting daub 4 even uniform;
(6) cold type pipe 2 is incubated: at the warming plate of cold type pipe 2 and heat-conducting daub 4 upper surface laying depth 50mm, and the blowing agent of isolated air flowing is injected in adjacent warming plate junction.
The chilled brine supply of cold type pipe 2 is realized by open-work with recovery, is incorporated in the collection in offside tunnel, brine distributing ring, thus incorporates whole freeze cycle loop.After access brine recycling, in reply cold type pipe, the flow of salt solution is monitored.By the control to brine flow and temperature, soil layer 3 quick freezing after freezing hole can be assisted to make concrete pipe sheet 1, improves resistance to overturning and the water shutoff of Frozen Soil Cylinder, improves the safety of engineering.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on manual, must determine its technical scope according to right.
Claims (10)
1. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method, described auxiliary temperature-reducing device is located at main the freezing in freezing hole place and, in the offside tunnel in face, is it is characterized in that, is included in the cold type pipe that tunnel concrete pipe sheet inwall lays; Described cold type pipe is made up of axial straight tube and circumferential arc tube, axial straight tube axially lays with certain spacing downwards from concrete pipe sheet top side by side along concrete pipe sheet, from topmost successively down until the length of the axial straight tube of foot is successively decreased, circumferential arc tube is welded with at the axial straight tube two ends of every root, the circular arc outer diameter of circumference arc tube is identical with the internal diameter of concrete pipe sheet, circumference arc tube lays along concrete pipe sheet circumferencial direction side by side with certain spacing, is connected between adjacent two circumferential arc tubes by high-pressure rubber pipe; On straight tube, venting ball valve is provided with for discharging cold type inner air tube in top axle.
2. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method according to claim 1, is characterized in that, described cold type pipe with the longitudinal centre line of described service channel for axis of symmetry symmetry is laid.
3. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method according to claim 1 and 2, is characterized in that, between described axial straight tube and between circumferential arc tube, be filled with heat-conducting daub even uniform.
4. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method according to claim 3, is characterized in that, is equipped with warming plate at described cold type pipe and heat-conducting daub upper surface, and adjacent warming plate junction is marked with the blowing agent of isolated air flowing.
5. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method according to claim 4, is characterized in that, described warming plate thickness is 50mm.
6. the auxiliary temperature-reducing device of Metro Connection Passage construction freezing method according to claim 1, is characterized in that, the steel plate that described cold type pipe welds 3mm thick by the channel-section steel openend of waist height 75mm is made.
7. the auxiliary temperature-reducing method of Metro Connection Passage construction freezing method, is characterized in that, comprise the steps:
(1) calculating need be located at the main amount of laying freezing cold type pipe in the offside tunnel in face in freezing hole place: the thickness first determining service channel Frozen Soil Cylinder vault and tunnel concrete pipe sheet junction Frozen Soil Cylinder, thickness gauge calculates the transfer area of service channel Frozen Soil Cylinder vault and side wall Frozen Soil Cylinder and tunnel concrete pipe sheet accordingly, refrigerating capacity accordingly needed for transfer area calculating, the cold type pipe amount of laying accordingly needed for refrigerating capacity calculating;
(2) lay cold type pipe: hole on tunnel concrete pipe sheet inwall, fixed expansion screw in hole, cold type pipe is fixed on tunnel concrete pipe sheet by setscrew; Described cold type pipe is made up of axial straight tube and circumferential arc tube, axial straight tube axially lays with certain spacing downwards from concrete pipe sheet top side by side along concrete pipe sheet, from topmost successively down until the length of the axial straight tube of foot is successively decreased, circumferential arc tube is welded with at the axial straight tube two ends of every root, the circular arc outer diameter of circumference arc tube is identical with the internal diameter of concrete pipe sheet, circumference arc tube lays along concrete pipe sheet circumferencial direction side by side with certain spacing, is connected between adjacent two circumferential arc tubes by high-pressure rubber pipe; On straight tube, venting ball valve is provided with for discharging cold type inner air tube in top axle;
(3) test suppressed by cold type pipe: use suds to carry out suppressing test, check whether the high-pressure rubber pipe junction between the commissure that axial straight tube and circumferential arc tube connect and circumferential arc tube exists leak source, test pressure value is 0.8MPa, and voltage stabilizing does not fall pressure for 30 minutes for qualified;
(4) point for measuring temperature is laid: evenly lay temperature probe at concrete pipe sheet top and sidewall, wherein top is no less than 3, and sidewall is no less than 2;
(5) fill heat-conducting daub: between axial straight tube and between circumferential arc tube, fill heat-conducting daub even uniform;
(6) cold type pipe insulation: lay warming plate at cold type pipe and heat-conducting daub upper surface, the blowing agent of isolated air flowing is injected in adjacent warming plate junction.
8. the auxiliary temperature-reducing method of Metro Connection Passage construction freezing method according to claim 7, is characterized in that, step (1) described cold type pipe with the longitudinal centre line of described service channel for axis of symmetry symmetry is laid.
9. the auxiliary temperature-reducing method of Metro Connection Passage construction freezing method according to claim 7, is characterized in that, the described warming plate thickness of step (6) is 50mm.
10. the auxiliary temperature-reducing method of Metro Connection Passage construction freezing method according to claim 7, is characterized in that, the steel plate that step (1) described cold type pipe welds 3mm thick by the channel-section steel openend of waist height 75mm is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186011.8A CN104832180B (en) | 2015-04-20 | 2015-04-20 | A kind of method of the efficient auxiliary temperature-reducing of Metro Connection Passage construction freezing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510186011.8A CN104832180B (en) | 2015-04-20 | 2015-04-20 | A kind of method of the efficient auxiliary temperature-reducing of Metro Connection Passage construction freezing method |
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| CN104832180A true CN104832180A (en) | 2015-08-12 |
| CN104832180B CN104832180B (en) | 2017-09-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083645A (en) * | 2018-08-01 | 2018-12-25 | 南宁轨道交通集团有限责任公司 | Shield tunnel and service channel method for synchronously constructing under the conditions of rich water round gravel stratum |
| CN110159275A (en) * | 2019-06-26 | 2019-08-23 | 中交路桥建设有限公司 | Water-rich sand layer geology Metro Thoroughfare freezing hole arragement construction and construction method |
| CN110966020A (en) * | 2019-11-22 | 2020-04-07 | 福州地铁集团有限公司 | Assembled freezing interface reinforced tunnel segment and construction method |
| CN111576484A (en) * | 2020-05-27 | 2020-08-25 | 中铁四局集团有限公司 | Lifting type operation platform for drilling construction of communication channel and preparation method thereof |
| CN112696201A (en) * | 2020-12-28 | 2021-04-23 | 上海市基础工程集团有限公司 | Shield tunnel connecting channel steel pipe sheet tapping and hole sealing construction method |
| CN115977650A (en) * | 2022-11-22 | 2023-04-18 | 安徽理工大学 | Communication freezing system based on plane skew connection channel and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083645A (en) * | 2018-08-01 | 2018-12-25 | 南宁轨道交通集团有限责任公司 | Shield tunnel and service channel method for synchronously constructing under the conditions of rich water round gravel stratum |
| CN110159275A (en) * | 2019-06-26 | 2019-08-23 | 中交路桥建设有限公司 | Water-rich sand layer geology Metro Thoroughfare freezing hole arragement construction and construction method |
| CN110966020A (en) * | 2019-11-22 | 2020-04-07 | 福州地铁集团有限公司 | Assembled freezing interface reinforced tunnel segment and construction method |
| CN111576484A (en) * | 2020-05-27 | 2020-08-25 | 中铁四局集团有限公司 | Lifting type operation platform for drilling construction of communication channel and preparation method thereof |
| CN112696201A (en) * | 2020-12-28 | 2021-04-23 | 上海市基础工程集团有限公司 | Shield tunnel connecting channel steel pipe sheet tapping and hole sealing construction method |
| CN115977650A (en) * | 2022-11-22 | 2023-04-18 | 安徽理工大学 | Communication freezing system based on plane skew connection channel and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104832180B (en) | 2017-09-26 |
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