CN110593891A - Shield tunnel for energy exchange and construction method thereof - Google Patents

Shield tunnel for energy exchange and construction method thereof Download PDF

Info

Publication number
CN110593891A
CN110593891A CN201910860099.5A CN201910860099A CN110593891A CN 110593891 A CN110593891 A CN 110593891A CN 201910860099 A CN201910860099 A CN 201910860099A CN 110593891 A CN110593891 A CN 110593891A
Authority
CN
China
Prior art keywords
energy exchange
exchange tube
liquid inlet
tunnel
liquid outlet
Prior art date
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.)
Pending
Application number
CN201910860099.5A
Other languages
Chinese (zh)
Inventor
胡俊
汪磊
刘勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Railway Times Architectural Design Institute Co Ltd
Original Assignee
China Railway Times Architectural Design Institute Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Railway Times Architectural Design Institute Co Ltd filed Critical China Railway Times Architectural Design Institute Co Ltd
Priority to CN201910860099.5A priority Critical patent/CN110593891A/en
Publication of CN110593891A publication Critical patent/CN110593891A/en
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/08Lining with building materials with preformed concrete slabs
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04Lining with building materials
    • E21D11/08Lining with building materials with preformed concrete slabs
    • E21D11/083Methods or devices for joining adjacent concrete segments
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/40Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24TGEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
    • F24T10/00Geothermal collectors
    • F24T10/10Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
    • F24T10/13Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground using tube assemblies suitable for insertion into boreholes in the ground, e.g. geothermal probes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0046Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
    • F24F2005/0057Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground receiving heat-exchange fluid from a closed circuit in the ground
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/40Geothermal heat-pumps
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/10Geothermal energy

Abstract

The invention discloses a shield tunnel for energy exchange and a construction method thereof, wherein the shield tunnel is formed by sequentially connecting a plurality of tunnel lining structures along the extending direction of the tunnel, and each tunnel lining structure is formed by sequentially connecting a plurality of energy exchange segments along the circumferential direction; energy exchange tube piece includes curved section of jurisdiction body 1, curved cavity steel sheet shell 4 is embedded in 1 outside of the section of jurisdiction body, be equipped with the inner chamber that supplies middle medium to flow in the cavity steel sheet shell 4, cavity steel sheet shell 4 court the both ends of 1 one side of the section of jurisdiction body are equipped with pipy inlet 2 and liquid outlet 3 respectively, inlet 2 includes that the feed liquor props up mouthful and total mouthful 5 of feed liquor. The hollow steel plate shell is directly contacted with the soil in the constant temperature zone, and the heat conductivity of the hollow steel plate shell is better than that of a concrete steel plate, so that the heat exchange efficiency of the hollow steel plate shell is obviously higher than that of the prior art, and the temperature regulation effect is improved.

Description

Shield tunnel for energy exchange and construction method thereof
Technical Field
The invention belongs to the field of tunnels, and particularly relates to a shield tunnel for energy exchange and a construction method thereof.
Background
The ground source heat pump technology utilizes the characteristic that the temperature of underground soil, surface water and underground water is relatively stable, and realizes temperature regulation by exchanging heat with indoor heat in a low-level heat source through consuming electric energy. The ground-based heat pump technology is a good alternative to the existing air conditioning system in terms of reducing operating cost, saving energy and reducing the amount of carbon dioxide discharged.
However, the ground source heat pump technology requires a large enough outdoor area to install the ground heat exchanger, which becomes a major obstacle restricting the popularization and application of the ground source heat pump air conditioning system in the occasions with large building volume ratio. Meanwhile, compared with the traditional air-conditioning system, the economic applicability of the ground source heat pump air-conditioning system is reduced to a certain extent due to the higher drilling cost. Therefore, how to save the outdoor area and reduce the cost and time consumed by the construction such as drilling and the like becomes the technical problem to be solved. In the prior art, in the construction process of some tunnels, the heat exchange structure is arranged in the duct pieces for assembling the tunnels, namely, the heat exchanger is arranged by utilizing the inner space of the duct pieces, so that the temperature of a subway station and a building on the subway station can be regulated, and the construction cost and the space occupied by the ground heat exchanger are reduced. And because the heat exchanger is not directly contacted with the soil of the constant temperature zone where the tunnel is located, the heat exchange efficiency is greatly reduced, and the temperature regulation effect is obviously reduced.
Disclosure of Invention
The invention aims to provide a shield tunnel for energy exchange and a construction method thereof, which aim to solve the problem that a heat exchanger in the prior art is not directly contacted with soil in a constant temperature zone where the tunnel is located, and the heat exchange efficiency is greatly reduced.
The shield tunnel for energy exchange is formed by sequentially connecting a plurality of tunnel lining structures along the extending direction of the tunnel, and each tunnel lining structure is formed by sequentially connecting a plurality of energy exchange segments along the circumferential direction; the energy exchange tube comprises an arc-shaped tube body, the outer side of the tube body is embedded into an arc-shaped hollow steel plate shell, an inner cavity for the flow of the intermediate medium is arranged in the hollow steel plate shell, a tubular liquid inlet and a tubular liquid outlet are respectively arranged at the two ends of one side of the hollow steel plate shell facing the pipe sheet body, the liquid inlet comprises a liquid inlet branch port and a liquid inlet main port, the liquid outlet comprises a liquid outlet branch port and a liquid outlet main port, the liquid inlet branch port is communicated with the liquid outlet branch ports of the adjacent energy exchange tube pieces through a connecting pipe, the liquid inlet of at least one energy exchange tube piece in one tunnel lining structure is a liquid inlet main port, the energy exchange tube sheet adjacent to the liquid inlet main port is provided with a liquid outlet main port, each liquid inlet main port is connected to the liquid inlet main pipe, each liquid outlet main port is connected to the liquid outlet main pipe, the liquid inlet main pipe and the liquid outlet main pipe are connected to a circulating pipeline of a ground source heat pump air conditioning system.
Preferably, the connecting pipe is U-shaped and is located the shield method energy exchange section of jurisdiction is inboard, the inlet manifold with go out the liquid header and be all along the pipeline that the shield tunnel direction extends.
The invention also provides a construction method of the shield tunnel for energy exchange, which comprises the following steps: the energy exchange tube piece enters a field and is subjected to waterproof adhesion; inspecting the duct piece before installation; in the shield tunneling process, a qualified energy exchange segment is hoisted and transported to the erector from a transport vehicle through a segment hoist; mounting the energy exchange tube piece, fastening and connecting the energy exchange tube piece and the energy exchange tube piece through bolts, and connecting the energy exchange tube piece and the energy exchange tube piece; and (3) finishing the installation of the energy exchange segment and continuing to advance to the shield tunneling, repeating the steps to install and connect the next ring of tunnel lining structure, and connecting the liquid inlet main pipe and the liquid outlet main pipe after one section of tunnel is laid and constructed.
Preferably, the step of installing the energy exchange segment is as follows:
1) installing the lowest energy exchange segment, and connecting a longitudinal bolt in time to connect the lining structure of the previous ring of the tunnel;
2) installing the rest energy exchange tube pieces from bottom to top in a left-right symmetrical mode, and connecting and fastening the annular bolts and the longitudinal bolts along with the installation of each energy exchange tube piece;
3) when the capping block is installed, firstly, the energy exchange tube piece is overlapped with 2/3 positions of gaps at the capping position and then radially inserted, the position is adjusted while the energy exchange tube piece is slowly pushed longitudinally, and when the capping block is difficult to install, a lubricant is firstly coated and then the capping block is installed;
4) after the energy exchange tube pieces of the whole ring tunnel lining structure are completely installed, fastening all bolts by using a pneumatic wrench;
5) tightening all hoisting holes to seal and block;
6) connecting all adjacent liquid inlet main ports and liquid outlet branch ports by using connecting pipes, and reserving the liquid inlet main ports and the liquid outlet main ports in the whole-ring tunnel lining structure so as to be connected with the finally connected liquid inlet main pipe and liquid outlet main pipe respectively;
7) after the work is finished, the shield can enter the tunneling of the next ring, and the installation step is repeated;
8) and after the energy exchange tube sheet is separated from the tail end of the shield tunnel, tightening the circumferential bolts and the longitudinal bolts of all the energy exchange tube sheets by using a pneumatic wrench in time.
Preferably, the segment water stop strips, the cork liner and the self-adhesive rubber sheet are adhered on the ground, and the segment water stop strips, the cork liner and the self-adhesive rubber sheet are adhered after being inspected to be qualified; before the water stop strip and the tunnel lining structure are pasted, the contact surface of the pipe piece is thoroughly cleaned, and the water stop strip is pasted and a swelling-retarding agent is applied.
Preferably, the energy exchange tube piece with damage, cracks and the warping phenomenon of the hollow steel plate shell is inspected, the energy exchange tube piece and the water stop strip are protected during hoisting and transportation when the energy exchange tube piece is replaced, the water stop strip at the front end of the last ring of tube piece is inspected before the tube piece is installed, and the energy exchange tube piece is damaged or pre-expanded and needs to be replaced.
Preferably, still will inspect personnel, instrument and site environment before carrying out the installation of energy exchange section of jurisdiction, clear away ponding and mud in the shield shell totally, whether the quantity of the connecting bolt, packing ring, bolt hole seal ring and the hoist and mount hole of inspection energy exchange section of jurisdiction shutoff is complete, and whether the quality is intact, whether the inspection mounting tool is complete and tuber pipe, high pressure positive blower's condition is good.
Preferably, when the energy exchange tube piece is installed, a fine adjustment device is required to be used for adjusting the longitudinal faces of the intrados of the energy exchange tube piece to be installed and the intrados of the installed energy exchange tube piece to be smoothly connected so as to reduce the staggering effect.
The invention has the following advantages:
1. the heat exchange is carried out through a plurality of arc-shaped hollow steel plate shells embedded on the outer side of the annular tunnel lining structure, the inner cavities of the hollow steel plate shells are used for introducing intermediate media for carrying out heat exchange, and all water outlets of the liquid inlet main pipe pass through the liquid inlet main port, the inner cavity of the hollow steel plate shell where the liquid inlet main port is located, the liquid outlet branch port, the liquid inlet branch port and the inner cavities of other hollow steel plate shells until entering the inner cavity of the hollow steel plate shell provided with the liquid outlet main port, and finally enter the liquid outlet main pipe from the liquid outlet main port to realize the circulation of temperature exchange. Because the hollow steel plate shell is in direct contact with the soil in the constant temperature zone, the heat conductivity of the hollow steel plate shell is better than that of a concrete steel plate, so that the heat exchange efficiency of the invention is obviously higher than that of the prior art, and the temperature regulation effect is improved.
2. The hollow steel plate shell covers a large area, a good heat exchange effect is provided, meanwhile, the hollow steel plate shell of the arc-shaped structure covers the outside of the duct piece body and is combined with the duct piece body to ensure enough structural strength, a complex construction mode is not needed in the assembling construction process of the shield tunnel, and the reliability and the efficiency of construction are ensured.
3. Because the hollow steel plate shell as the heat exchanger covers the outer part of the duct piece body, the hollow steel plate shell does not need to be fixed complexly through a fixing piece when the energy exchange duct piece is processed and poured, the processing process of the duct piece is simplified, the pouring difficulty is reduced, and the popularization and the application of the technology are facilitated.
4. If the hollow steel plate shell of part energy exchange segment is damaged and leaked, the connecting pipe can be replaced, the damaged energy exchange segment is skipped over, and a new passage is formed by connecting the energy exchange segment in series. Therefore, the cost is low in the maintenance process, and the use of the whole system is not influenced by the partial hollow steel plate shell.
Drawings
FIG. 1 is a schematic view of a partial structure of a shield tunnel according to the present invention;
FIG. 2 is a cross-sectional view of a shield tunnel of the present invention;
FIG. 3 is a schematic structural view of an energy exchange segment of the present invention;
fig. 4 is a flowchart of a shield tunnel construction method of the present invention.
The reference numerals in the figures are as follows:
1. the liquid inlet device comprises a pipe sheet body, 2, a liquid inlet, 3, a liquid outlet, 4, a hollow steel plate shell, 5, a liquid inlet main port, 6, a liquid outlet main port, 7, a connecting pipe, 8, a liquid inlet main pipe, 9 and a liquid outlet main pipe.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
As shown in fig. 1-4, the present invention provides a tunnel lining structure formed by connecting a plurality of tunnel lining structures in sequence along the extending direction of a tunnel, wherein the tunnel lining structure is formed by connecting a plurality of energy exchange segments in sequence along the circumferential direction; the energy exchange tube comprises an arc-shaped tube piece body 1, an arc-shaped hollow steel plate shell 4 is embedded in the outer side of the tube piece body 1, an inner cavity for the flow of the intermediate medium is arranged in the hollow steel plate shell 4, a tubular liquid inlet 2 and a tubular liquid outlet 3 are respectively arranged at the two ends of one side of the hollow steel plate shell 4 facing the pipe sheet body 1, the liquid inlet 2 comprises a liquid inlet branch port and a liquid inlet main port 5, the liquid outlet 3 comprises a liquid outlet branch port and a liquid outlet main port 6, the liquid inlet branch port is communicated with the liquid outlet branch ports of the adjacent energy exchange tube pieces through a connecting pipe 7, the liquid inlet 2 of at least one energy exchange tube piece in one tunnel lining structure is a liquid inlet main port 5, the energy exchange tube sheet adjacent to the liquid inlet main ports 5 is provided with liquid outlet main ports 6, each liquid inlet main port 5 is connected to a liquid inlet main pipe 8, each liquid outlet main port 6 is connected to a liquid outlet main pipe 9, the liquid inlet main pipe 8 and the liquid outlet main pipe 9 are connected to a circulating pipeline of a ground source heat pump air conditioning system.
And each water outlet of the liquid inlet main pipe 8 passes through the inner cavity of the hollow steel plate shell 4 where the liquid inlet main port 5 and the liquid inlet main port 5 are located, the liquid outlet branch port, the liquid inlet branch port and the inner cavities of other hollow steel plate shells 4 until entering the inner cavity of the hollow steel plate shell 4 provided with the liquid outlet main port 6, and finally enters the liquid outlet main pipe 9 from the liquid outlet main port 6 to realize the circulation of temperature exchange.
The connecting pipe 7 is U-shaped and is positioned on the inner side of the shield method energy exchange tube piece, and the liquid inlet main pipe 8 and the liquid outlet main pipe 9 are both pipelines extending along the direction of the shield tunnel.
The hollow steel plate shell 4 of part of the energy exchange tube sheet is damaged and leaked, the connecting pipe 7 can be replaced, the damaged energy exchange tube sheet is skipped over, and a new passage is formed by connecting in series. Therefore, the cost is low in the maintenance process, and the use of the whole system is not influenced by the partial hollow steel plate shell 4.
The invention also provides a construction method of the shield tunnel for energy exchange, which comprises the following steps: the energy exchange tube piece enters a field and is subjected to waterproof adhesion; inspecting the duct piece before installation; in the shield tunneling process, a qualified energy exchange segment is hoisted and transported to the erector from a transport vehicle through a segment hoist; mounting the energy exchange tube piece, fastening and connecting the energy exchange tube piece and the energy exchange tube piece through bolts, and connecting the energy exchange tube piece and the energy exchange tube piece with the connecting pipe 7; and (3) finishing the installation of the energy exchange segment and continuing to advance to the shield tunneling, repeating the steps to install and connect the next ring of tunnel lining structure, and connecting the liquid inlet main pipe 8 and the liquid outlet main pipe 9 after the laying construction of one section of tunnel. The liquid inlet main pipe 8 and the liquid outlet main pipe 9 can be formed by connecting a plurality of sections of pipelines, each section of pipeline is provided with a pipe joint which extends vertically, the pipe joints are connected with corresponding liquid inlet main ports and liquid outlet main ports to realize the establishment of a loop, the pipelines of each section are connected in sequence to realize that media flow along the direction of a tunnel and can enter the liquid inlet main ports at different positions, and the circulation of heat exchange intermediate media is realized.
Wherein: the steps of energy exchange segment installation are:
1) installing the lowest energy exchange segment, and connecting a longitudinal bolt in time to connect the lining structure of the previous ring of the tunnel; when the energy exchange tube piece is installed, a fine adjustment device is needed to adjust the inner cambered surface longitudinal surfaces of the energy exchange tube piece to be installed and the installed energy exchange tube piece to be smoothly connected so as to reduce the staggering effect.
2) Installing the rest energy exchange tube pieces from bottom to top in a left-right symmetrical mode, and connecting and fastening the annular bolts and the longitudinal bolts along with the installation of each energy exchange tube piece;
3) when the capping block is installed, firstly, the energy exchange tube piece is overlapped with 2/3 positions of gaps at the capping position and then radially inserted, the position is adjusted while the energy exchange tube piece is slowly pushed longitudinally, and when the capping block is difficult to install, a lubricant is firstly coated and then the capping block is installed;
4) after the energy exchange tube pieces of the whole ring tunnel lining structure are completely installed, fastening all bolts by using a pneumatic wrench;
5) tightening all hoisting holes to seal and block;
6) connecting all adjacent liquid inlet main ports 5 and liquid outlet branch ports by using connecting pipes 7, and reserving the liquid inlet main ports 5 and the liquid outlet main ports 6 in the whole-ring tunnel lining structure so as to be connected with a finally connected liquid inlet main pipe 8 and a finally connected liquid outlet main pipe 9 respectively;
7) after the work is finished, the shield can enter the tunneling of the next ring, and the installation step is repeated;
8) and after the energy exchange tube sheet is separated from the tail end of the shield tunnel, tightening the circumferential bolts and the longitudinal bolts of all the energy exchange tube sheets by using a pneumatic wrench in time.
The waterproof pasting process comprises the following steps: adhering the segment water stop strips, the cork liner and the self-adhesive rubber sheet on the ground, and inspecting the segment water stop strips, the cork liner and the self-adhesive rubber sheet to be qualified; before the water stop strip and the tunnel lining structure are pasted, the contact surface of the pipe piece is thoroughly cleaned, and the water stop strip is pasted and a swelling-retarding agent is applied.
Before assembling the energy exchange duct piece, the energy exchange duct piece is inspected, the energy exchange duct piece with damage, cracks and the hollow steel plate shell 4 warping phenomenon is replaced, the energy exchange duct piece and the water stop strip are protected in the hoisting and transporting processes, the water stop strip at the front end of the last ring of duct piece is arranged before the duct piece is installed, and the duct piece is damaged or pre-expanded and needs to be replaced.
Still will inspect personnel, instrument and site environment before carrying out the installation of energy exchange section of jurisdiction, clear away ponding and mud in the shield shell totally, whether the quantity of the connecting bolt, packing ring, bolt hole seal ring and the hoist and mount hole of inspection energy exchange section of jurisdiction shutoff is complete, whether the quality is intact, whether the condition of inspection mounting tool is complete and tuber pipe, high pressure positive blower is good.
Because there are a lot of defects in directly locating the tube sheet with heat transfer structure among the prior art, make pouring of tube sheet more complicated like the joining of heat exchange pipe, be not convenient for set up the manufacturing technology of the above-mentioned energy exchange tube sheet of steel reinforcement cage skeleton, specifically include the following step: cleaning the mould; spraying demoulding oil on the mould; assembling a mould; putting the hollow steel plate shell 4 and the steel bar cage framework into a mold; fixing the mould and then pouring concrete; maintaining; demolding; assembling a three-ring trial; repairing a duct piece;
wherein:
cleaning the die: the steel mould is thoroughly cleaned before the mould is assembled, concrete residues are completely removed, the inner surface is cleaned by matching with a rubber sheet, and the inner surface is cleaned by washing with high-pressure water.
Spraying demolding oil: spraying by using a mist sprayer, and then uniformly wiping by using a rag to uniformly distribute a thin layer of demoulding oil on the inner surface of the mould, and cleaning by using cotton yarn if the demoulding oil flows.
Assembling a module: the quality of the mould, particularly the dimensional accuracy, is extremely important for producing qualified segments and assembling into a lining with accurate dimensions, so the mould assembling quality is strictly controlled.
And mould structure is different with mould commonly used in this scheme, and mould commonly used is gone into in the convenient steel reinforcement cage skeleton hoist and mount of mould, generally can establish the die block with the section of jurisdiction inboard, directly goes into the mould with the steel reinforcement cage skeleton during the group mould. And this scheme insole template is for being located the arc template of 1 extrados of the pipe sheet body, cavity steel sheet shell 4 welds earlier inlet 2 with liquid outlet 3 hoist and mount again and put on the die block, inlet 2 with liquid outlet 3 will fill in earlier the stopper stick that prevents the concrete entering, hang the steel reinforcement cage skeleton again and go into on cavity steel sheet shell 4, later with end mould and side form fixed, detect the interior cambered surface of mould before putting into cavity steel sheet shell 4 and steel reinforcement cage skeleton, must detect the extrados of mould after the well assembled mould. The models of the hollow steel plate shell and the steel reinforcement cage are matched with the model of the mold, and the position of the protective cushion block is accurate.
The concrete pouring method comprises the following specific steps:
1) the concrete mixing proportion must be trial-matched, and tests are carried out to obtain correct curing time and compressive strength;
2) concrete pouring is started, a gantry crane is used for hoisting a concrete bucket filled with waterproof concrete to the position above the mold, and then discharging is carried out in a mode that two ends of the mold are arranged first and then the middle of the mold is arranged later;
3) and starting the attached pneumatic vibrator on the mould for vibration, discharging concrete in batches for vibration, realizing layered vibration, and judging the vibration time when the attached pneumatic vibrator is vibrated, wherein the contact part of the concrete and the side plate is observed, no jet-shaped air or water bubbles exist on the surface of the concrete, the surface can uniformly fluctuate for a proper time, and the vibration time is usually 4-6 min and cannot exceed 8 min.
4) Then, vibrating and compacting by using a vibrating rod, wherein the middle part is arranged at the front end of the vibrating rod, the two sides are arranged at the rear end of the vibrating rod, the vibration time of each vibration point is controlled within 10-20s, and the vibrating rod is slowly pulled out after the vibration is finished so as to reduce bubbles and water holes after the segment is formed;
5) and after all the concrete is vibrated and formed, removing the pressing plate after about 10min according to the air temperature and the concrete condensation condition, and polishing the surface of the concrete.
The smooth surface is divided into three procedures of coarse, medium and fine, wherein the smooth surface is coarse: using an aluminum alloy pressure bar, strickling off redundant concrete, and performing coarse grinding; a medium light surface: polishing the concrete surface by using an ash spoon after the concrete receives water to ensure that the segment is flat and smooth; polishing surface: and (3) using a long spoon for fine smoothing, so that the surface of the segment is bright and has no dust spoon mark, and the error difference of the arc surface evenness of the segment is not more than +/-5 mm.
The curing comprises the following steps:
1) and steam curing: after concrete is vibrated and molded and polished for 2 hours, when slight indentation is pressed on the surface of the concrete by hand, a piece of duct piece outer cambered surface hollow steel plate shell 4 is covered with wet maintenance cloth, canvas for steam is sleeved on a mold, the lower part of the canvas is compacted by a batten at the position contacted with the ground, a thermometer is inserted into a reserved small hole on the canvas sleeve, after the check is correct, the artificial steam is introduced, a steam pipe arranged at the bottom of the mold is fully distributed with the small holes, the steam can be uniformly sprayed from each small hole during steam curing, so that the whole mold is uniformly heated, the temperature is increased at the speed of 15-20 ℃ per hour, shrinkage cracks of the duct piece which is heated too fast are prevented, the maximum maintenance temperature is 50-60 ℃, the temperature is kept for 3-4 hours, the temperature is reduced at the speed of 15-20 ℃ per hour, and the difference between the temperature of the duct piece. Checking the reading on the thermometer every half hour in the whole process, and adjusting the steam input quantity to adjust the temperature when a problem is found;
2) and curing after demolding: and (3) hoisting the pipe piece after demoulding into a pool for maintenance to ensure that the pipe piece is completely soaked in water, wherein the temperature difference between the pipe piece and the water in the pool is not more than 20 ℃ when the pipe piece is put into the pool, the maintenance period is 7d, then performing water spraying maintenance to keep the outside of the pipe piece moist, and performing spray maintenance to 28-day age.
The invention is described above with reference to the accompanying drawings, it is obvious that the specific implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various insubstantial modifications of the inventive concept and solution of the invention, or to apply the inventive concept and solution directly to other applications without modification.

Claims (8)

1. A shield tunnel for energy exchange, characterized in that: the tunnel lining structure is formed by sequentially connecting a plurality of tunnel lining structures along the extending direction of a tunnel, and the tunnel lining structures are formed by sequentially connecting a plurality of energy exchange pipe pieces along the circumferential direction; the energy exchange tube piece comprises an arc-shaped tube piece body (1), an arc-shaped hollow steel plate shell (4) is embedded into the outer side of the tube piece body (1), an inner cavity for medium flowing in the middle is arranged in the hollow steel plate shell (4), the hollow steel plate shell (4) faces towards the two ends of one side of the tube piece body (1) and is respectively provided with a tubular liquid inlet (2) and a liquid outlet (3), the liquid inlet (2) comprises a liquid inlet branch port and a liquid inlet main port (5), the liquid outlet (3) comprises a liquid outlet branch port and a liquid outlet main port (6), the liquid inlet branch port is communicated with the liquid outlet branch port of an adjacent energy exchange tube piece through a connecting pipe (7), the liquid inlet (2) of at least one energy exchange tube piece in one tunnel lining structure is the liquid inlet main port (5), and the energy exchange tube piece adjacent to the liquid inlet main port (5) is provided with, each liquid inlet main port (5) is connected to a liquid inlet main pipe (8), each liquid outlet main port (6) is connected to a liquid outlet main pipe (9), and the liquid inlet main pipe (8) and the liquid outlet main pipe (9) are connected to a circulating pipeline of a ground source heat pump air conditioning system.
2. The shield tunnel for energy exchange of claim 1, wherein: the connecting pipe (7) is U-shaped and is positioned on the inner side of the shield method energy exchange tube piece, and the liquid inlet main pipe (8) and the liquid outlet main pipe (9) are both pipelines extending along the direction of the shield tunnel.
3. A construction method of a shield tunnel performing energy exchange according to claim 1 or 2, characterized in that: the method comprises the following steps: the energy exchange tube piece enters a field and is subjected to waterproof adhesion; inspecting the duct piece before installation; in the shield tunneling process, a qualified energy exchange segment is hoisted and transported to the erector from a transport vehicle through a segment hoist; mounting energy exchange tube pieces, fastening and connecting the energy exchange tube pieces through bolts, and connecting the energy exchange tube pieces with the connecting pipes (7); and (3) finishing the installation of the energy exchange segment and continuing to advance to the shield tunneling, repeating the steps to install and connect the next ring of tunnel lining structure, and connecting the liquid inlet main pipe (8) and the liquid outlet main pipe (9) after one section of tunnel is laid and constructed.
4. The method of constructing a shield tunnel for energy exchange according to claim 3, wherein: the steps of energy exchange segment installation are:
1) installing the lowest energy exchange segment, and connecting a longitudinal bolt in time to connect the lining structure of the previous ring of the tunnel;
2) installing the rest energy exchange tube pieces from bottom to top in a left-right symmetrical mode, and connecting and fastening the annular bolts and the longitudinal bolts along with the installation of each energy exchange tube piece;
3) when the capping block is installed, firstly, the energy exchange tube piece is overlapped with 2/3 positions of gaps at the capping position and then radially inserted, the position is adjusted while the energy exchange tube piece is slowly pushed longitudinally, and when the capping block is difficult to install, a lubricant is firstly coated and then the capping block is installed;
4) after the energy exchange tube pieces of the whole ring tunnel lining structure are completely installed, fastening all bolts by using a pneumatic wrench;
5) tightening all hoisting holes to seal and block;
6) connecting all adjacent liquid inlet main ports (5) and liquid outlet branch ports by using connecting pipes (7), and reserving the liquid inlet main ports (5) and the liquid outlet main ports (6) in the whole ring tunnel lining structure so as to be connected with a finally connected liquid inlet main pipe (8) and a finally connected liquid outlet main pipe (9) respectively;
7) after the work is finished, the shield can enter the tunneling of the next ring, and the installation step is repeated;
8) and after the energy exchange tube sheet is separated from the tail end of the shield tunnel, tightening the circumferential bolts and the longitudinal bolts of all the energy exchange tube sheets by using a pneumatic wrench in time.
5. The method for constructing a shield tunnel for energy exchange according to claim 4, wherein: adhering the segment water stop strips, the cork liner and the self-adhesive rubber sheet on the ground, and inspecting the segment water stop strips, the cork liner and the self-adhesive rubber sheet to be qualified; before the water stop strip and the tunnel lining structure are pasted, the contact surface of the pipe piece is thoroughly cleaned, and the water stop strip is pasted and a swelling-retarding agent is applied.
6. The method of constructing a shield tunnel for energy exchange according to claim 5, wherein: the energy exchange segment is inspected, the energy exchange segment with damage, cracks and the warping phenomenon of the hollow steel plate shell (4) is replaced, the energy exchange segment and the water stop strips are protected in the hoisting and transporting processes, the water stop strip at the front end of the last segment is inspected before the segment is installed, and the segment is damaged or pre-expanded and needs to be replaced.
7. The method of constructing a shield tunnel for energy exchange according to claim 6, wherein: still will inspect personnel, instrument and site environment before carrying out the installation of energy exchange section of jurisdiction, clear away ponding and mud in the shield shell totally, whether the quantity of the connecting bolt, packing ring, bolt hole seal ring and the hoist and mount hole of inspection energy exchange section of jurisdiction shutoff is complete, whether the quality is intact, whether the condition of inspection mounting tool is complete and tuber pipe, high pressure positive blower is good.
8. The method of constructing a shield tunnel for energy exchange according to claim 7, wherein: when the energy exchange tube piece is installed, a fine adjustment device is needed to adjust the inner cambered surface longitudinal surfaces of the energy exchange tube piece to be installed and the installed energy exchange tube piece to be smoothly connected so as to reduce the staggering effect.
CN201910860099.5A 2019-09-11 2019-09-11 Shield tunnel for energy exchange and construction method thereof Pending CN110593891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910860099.5A CN110593891A (en) 2019-09-11 2019-09-11 Shield tunnel for energy exchange and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910860099.5A CN110593891A (en) 2019-09-11 2019-09-11 Shield tunnel for energy exchange and construction method thereof

Publications (1)

Publication Number Publication Date
CN110593891A true CN110593891A (en) 2019-12-20

Family

ID=68858876

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910860099.5A Pending CN110593891A (en) 2019-09-11 2019-09-11 Shield tunnel for energy exchange and construction method thereof

Country Status (1)

Country Link
CN (1) CN110593891A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435334B (en) * 2008-12-16 2010-10-06 上海隧道工程股份有限公司 In-and-out hole segment pipe sheet connecting structure of shield method and construction method thereof
CN102661154A (en) * 2012-05-14 2012-09-12 云南农业大学 Double-layer structural concrete for lining tunnel under condition of terrestrial heat erosion and construction method of double-layer structural concrete
JP2018150697A (en) * 2017-03-10 2018-09-27 鹿島建設株式会社 Ground freezing method, and ground freezing apparatus
CN109184755A (en) * 2018-11-16 2019-01-11 海南大学 A kind of shield tail leakage sealing section of jurisdiction and its construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435334B (en) * 2008-12-16 2010-10-06 上海隧道工程股份有限公司 In-and-out hole segment pipe sheet connecting structure of shield method and construction method thereof
CN102661154A (en) * 2012-05-14 2012-09-12 云南农业大学 Double-layer structural concrete for lining tunnel under condition of terrestrial heat erosion and construction method of double-layer structural concrete
JP2018150697A (en) * 2017-03-10 2018-09-27 鹿島建設株式会社 Ground freezing method, and ground freezing apparatus
CN109184755A (en) * 2018-11-16 2019-01-11 海南大学 A kind of shield tail leakage sealing section of jurisdiction and its construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
祝振南 等: "地热利用型盾构法隧道施工探索——以清华园隧道能源管片设计、制作及安装为例", 《隧道建设(中英文)》 *

Similar Documents

Publication Publication Date Title
US9151417B2 (en) Method and composition for lining a pipe
US7270150B2 (en) Method of lining a pipeline
US20200318774A1 (en) Local repair method combining internally bonded CFRP and polymer grouting for cracks in drainage pipe
US20150114507A1 (en) Method and system for coating a pipe
CN105862660A (en) Full-automatic construction machine of carbon fiber cloth reinforced high-pile wharf beam-type element
CN101822936A (en) High-temperature scale anticorrosion construction method for heat-engine plant desulfurizer
CN103867214A (en) Construction method for carrying out secondary lining and casting in shielded tunnel
CN204492187U (en) A kind of for the sealing locating device bottom concrete wall template
CN104695631A (en) Construction method for spraying polyurea waterproof coating on roof
WO2019015305A1 (en) Flexible flow production line for producing ballastless track slab by means of pre-tensioning method
CN110593891A (en) Shield tunnel for energy exchange and construction method thereof
CN202090619U (en) Combination reinforcing structure of building roofing concrete beam
CN108316942A (en) A kind of tunnel double-lining microcrack reinforcement
CN108622436A (en) A kind of repair method after composite material blade damage
CN205743005U (en) Inflatable adjustable concrete structural slab hole to be provided construction mould
CN205735469U (en) PCCP tube core vertical forming method automation production flow line
CN104439886B (en) A kind of vacuum drying oven diffusion pump cast iron housing crackle strengthening with external bonding device and crackle Bonded Repair method
CN102303369A (en) Process for prefabricating square culvert
CN106273315A (en) Movable-type tubing production system engineering truck
CN105922437A (en) PCCP pipe core vertical molding method automatic production line
CN208058252U (en) Ring orientation prestress repairing and reinforcing system in a kind of pipe
CN205951233U (en) Portable type tubular product production system machineshop car
CN110714782A (en) Shield method energy exchange duct piece and manufacturing process thereof
KR20040031560A (en) Composite frame for repair and reinforcement for inner wall of tunnel
CN107460794A (en) One kind is in the plate-type non-fragment orbit precast construction methods of severe cold area CRTS III

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination