CN113756867A - Wind and water pipeline fixing device of underground excavated tunnel and installation method thereof - Google Patents
Wind and water pipeline fixing device of underground excavated tunnel and installation method thereof Download PDFInfo
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- CN113756867A CN113756867A CN202111205407.4A CN202111205407A CN113756867A CN 113756867 A CN113756867 A CN 113756867A CN 202111205407 A CN202111205407 A CN 202111205407A CN 113756867 A CN113756867 A CN 113756867A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 92
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 132
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- 238000010276 construction Methods 0.000 claims description 13
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- 238000002360 preparation method Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Excavating Of Shafts Or Tunnels (AREA)
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Abstract
The invention relates to a wind and water pipeline fixing device for an underground excavated tunnel, which comprises a steel plate support (1), a steel plate bracket and expansion bolts (2), wherein the steel plate support (1) adopts 25a # channel steel and is fixed on the inner wall of the tunnel through the steel plate bracket by the expansion bolts (2); the supporting legs (3) on one side of the steel plate support (1) are connected with the steel plate bracket, the waist (4) of the steel plate support (1) is perpendicular to the extending direction of the wind and water pipeline (5), and a plurality of channels (6) are continuously formed in the waist (4) of the steel plate support (1) and the supporting legs (3) on the other side of the steel plate support. The invention also relates to an installation method of the wind and water pipeline fixing device of the underground excavated tunnel. The invention effectively reduces the safety risk caused by the infirm installation of the wind-water pipeline, ensures the installation quality of the wind-water pipeline and ensures the smoothness and the beauty of the wind-water pipeline.
Description
Technical Field
The invention relates to the technical field of construction of underground excavated tunnels of high-speed railways, highways or subways, in particular to a wind and water pipeline fixing device of an underground excavated tunnel and an installation method thereof.
Background
In the process of building tunnels of high-speed railways, highways or subways, wind and water pipelines are required to be installed, the installation of the wind and water pipelines is a very important process in tunnel construction, and the wind and water pipelines can be installed in all the existing underground excavation tunnel construction.
The installation quality of the wind-water pipeline is not in place, certain potential safety hazards exist, the passage of mechanical vehicles can be influenced in a limited hole space, the risk that the pipeline is broken after being collided by the mechanical vehicles running to influence normal construction exists, and the appearance is not attractive.
At present, a specific device for installing the wind and water pipeline is lacked.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a wind and water pipeline fixing device for an underground excavated tunnel and an installation method thereof. The invention effectively reduces the safety risk caused by the infirm installation of the wind-water pipeline, ensures the installation quality of the wind-water pipeline and ensures the smoothness and the beauty of the wind-water pipeline.
In order to achieve the purpose, the invention provides a wind and water pipeline fixing device for an underground excavated tunnel, which comprises a steel plate support, steel plate brackets and expansion bolts, wherein the steel plate support adopts 25a # channel steel, is arranged at intervals of 3-8m along the tunnel, and is fixed on the inner wall of the tunnel through the steel plate brackets by the expansion bolts; the landing leg and the steel sheet bracket of one side of steel sheet support are connected, the waist perpendicular to geomantic omen pipeline's of steel sheet support extending direction sets up, and set up a plurality of channels in succession on the landing leg of steel sheet support's waist and opposite side, a plurality of channels set up from top to bottom for lay and fixed geomantic omen pipeline.
Preferably, the steel plate bracket is manufactured by the following method:
a. rough rolling, namely rolling a rectangular billet into a U-shaped groove rolled piece, and pre-dividing the waist and the two supporting legs;
b. finish rolling, fully finishing metal distribution of the waist and the two supporting legs, and controlling the size and the shape of a rolled piece to enable the rolled piece to meet the technical requirements;
c. final rolling to stabilize the size and shape of the waist and the two support legs and finish the thermal deformation process; carrying out final processing on the size and the shape to roll out a complete groove-shaped steel plate bracket;
d. setting out, drawing a real pattern of a channel on the complete groove-shaped steel plate bracket according to the shape and the size required by construction, and marking various processing marks to prepare for cutting and blanking the steel plate bracket;
e. cutting, namely placing the steel plate bracket on a cutting machine for slotting and cutting;
f. edge processing, namely cutting the edge of the channel by 1-2mm in order to eliminate edge hardening caused by cutting, and finishing finally;
g. hole making: and drilling holes on the supporting legs connected with the steel plate bracket by using a punching machine, an electric drill and an air drill.
In any of the above embodiments, it is preferable that the steel plate bracket has a size of 250 × 78 × 7mm, an overall height of 900 × 1000mm, and the expansion bolt is M16 × 200 mm.
In any of the above aspects, preferably, the number of the channels is 3 to 5, and the shape of the channels is: and the wind and water pipeline is in an L shape which is rotated by 90 degrees clockwise from the bottom surface of the waist along the extending direction of the wind and water pipeline.
In addition, in order to achieve the above object, the present invention also provides an installation method of the wind and water pipeline fixing device of the underground excavated tunnel, comprising the steps of:
A. drilling holes at the designed position of the inner wall of the tunnel;
B. connecting the steel plate bracket and the steel plate bracket through expansion bolts, and installing the expansion bolts in the drill holes in the step A;
C. fixing the wind-water pipelines in sections in corresponding channels, and then splicing and installing;
D. paving a rubber layer on the contact surface of the wind and water pipeline and the channel to ensure soft contact;
E. painting red and white warning paint on the wind and water pipelines and the steel plate bracket;
F. pipeline signboard is hung neatly to same section, posts water pipe business turn over direction sign.
Preferably, the installation height of the wind and water pipeline fixing device is 2-3m away from the ground of the tunnel, and the thickness of the rubber layer is 5-8mm and is arranged in the center.
In any of the above schemes, preferably, the tunnel where the steel plate bracket is erected has an uneven surface, and needs to be treated in advance to ensure the surface to be flat; the lengths of pipelines are unified before the wind and water pipelines are installed, and the positions of joints are staggered with those of steel plate support channels.
The invention has the beneficial effects that:
1. the invention effectively reduces the safety risk caused by the infirm installation of the wind-water pipeline, ensures the installation quality of the wind-water pipeline and ensures the smoothness and the beauty of the wind-water pipeline.
2. The invention adopts the steel plate bracket to fix and adjust the wind-water pipeline, ensures the stability of the wind-water pipeline, effectively reduces the potential safety hazard of the wind-water pipeline, and has standard and beautiful site construction.
3. The steel plate bracket specially used in the invention ensures the strength and stability of the structure of the bracket, ensures the shape of the bracket, and can effectively improve the product percent of pass and the yield. And the construction process is simple, the cost is low, and the economic benefit is obvious.
Brief description of the drawings
Fig. 1 is a schematic structural view of a wind and water pipeline fixing device of an underground excavated tunnel according to an embodiment of the present invention;
fig. 2 is an overall schematic view of a wind and water pipe fixing device of an underground excavated tunnel in the tunnel according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present application will be described in detail below with reference to the accompanying drawings and the detailed embodiments of the present application, but the following examples are only for the understanding of the present invention, the embodiments and features of the embodiments in the present application can be combined with each other, and the present application can be implemented in various different ways as defined and covered by the claims.
Example 1
Referring to fig. 1 and 2, the wind and water pipeline fixing device for the underground excavated tunnel comprises a steel plate support 1, steel plate brackets and expansion bolts 2, wherein the steel plate support 1 adopts 25a # channel steel, is arranged at intervals of 3-8m along the tunnel, and is fixed on the inner wall of the tunnel through the steel plate brackets and the expansion bolts 2; the landing leg 3 and the steel sheet bracket connection of one side wherein of steel sheet support 1, the waist 4 perpendicular to wind water pipe 5's of steel sheet support 1 extending direction sets up, and set up a plurality of channels 6 in succession on the landing leg 3 of the waist 4 of steel sheet support 1 and opposite side, a plurality of channels 6 set up from top to bottom for lay and fix wind water pipe 5.
The steel plate bracket 1 is manufactured in the following way:
a. rough rolling, namely rolling a rectangular billet into a U-shaped groove rolled piece, and performing presorting on a waist 4 and two supporting legs 3;
b. finish rolling, fully finishing the metal distribution of the waist 4 and the two supporting legs 3, and controlling the size and the shape of a rolled piece to enable the rolled piece to meet the technical requirements;
c. finishing rolling to stabilize the size and shape of the waist 4 and the two support legs 3 and finish the thermal deformation process; carrying out final processing on the size and the shape to roll out a complete groove-shaped steel plate bracket 1;
d. lofting, namely drawing a real pattern of a channel 6 on the complete channel-shaped steel plate bracket 1 according to the shape and the size required by construction, and marking various processing marks to prepare for cutting and blanking of the steel plate bracket 1;
e. cutting, namely placing the steel plate bracket 1 on a cutting machine for slotting and cutting;
f. edge machining, namely cutting the edge of the channel 6 by 1-2mm in order to eliminate edge hardening caused by cutting, and finishing finally;
g. hole making: and drilling holes on the supporting legs 3 connected with the steel plate bracket by using a punching machine, an electric drill and an air drill.
The size of the steel plate bracket 1 is 250 x 78 x 7mm, the overall height is 900 x 1000mm, and the expansion bolts 2 are M16 x 200 mm.
The number of the channels 6 is 3-5, and the shape of the channels 6 is as follows: seen from the bottom surface of the waist 4 in the direction of extension of the wind and water duct 5, is L-shaped, rotated 90 ° clockwise.
In addition, the installation method of the wind and water pipeline fixing device for the underground excavated tunnel comprises the following steps of:
A. drilling holes at the designed position of the inner wall of the tunnel;
B. connecting the steel plate bracket 1 and the steel plate bracket through expansion bolts 2, and installing the expansion bolts 2 in the drill holes in the step A;
C. fixing the wind-water pipelines 5 in sections in corresponding channels 6, and then splicing and installing;
D. a rubber layer 7 is paved on the contact surface of the wind and water pipeline 5 and the channel 6 to ensure soft contact;
E. painting red and white warning paint on the wind and water pipeline 5 and the steel plate bracket 1;
F. pipeline signboard is hung neatly to same section, posts water pipe business turn over direction sign.
The mounting height of the wind-water pipeline fixing device is 2-3m away from the tunnel ground, and the thickness of the rubber layer 7 is 5-8mm and is arranged in the middle.
The surface of the tunnel where the steel plate bracket 1 is erected is uneven, and needs to be treated in advance to ensure the surface to be flat; the lengths of the pipelines are unified before the wind and water pipelines 5 are installed, and the joint positions are staggered from the positions of the steel plate support channels 1.
Example 2
Referring to fig. 1 and 2, the wind and water pipeline fixing device for the underground excavated tunnel comprises a steel plate support 1, steel plate brackets and expansion bolts 2, wherein the steel plate support 1 adopts 25a # channel steel, is arranged at intervals of 3-8m along the tunnel, and is fixed on the inner wall of the tunnel through the steel plate brackets and the expansion bolts 2; the landing leg 3 and the steel sheet bracket connection of one side wherein of steel sheet support 1, the waist 4 perpendicular to wind water pipe 5's of steel sheet support 1 extending direction sets up, and set up a plurality of channels 6 in succession on the landing leg 3 of the waist 4 of steel sheet support 1 and opposite side, a plurality of channels 6 set up from top to bottom for lay and fix wind water pipe 5.
The steel plate bracket 1 is manufactured in the following way:
a. rough rolling, namely rolling a rectangular billet into a U-shaped groove rolled piece, and performing presorting on a waist 4 and two supporting legs 3;
b. finish rolling, fully finishing the metal distribution of the waist 4 and the two supporting legs 3, and controlling the size and the shape of a rolled piece to enable the rolled piece to meet the technical requirements;
c. finishing rolling to stabilize the size and shape of the waist 4 and the two support legs 3 and finish the thermal deformation process; carrying out final processing on the size and the shape to roll out a complete groove-shaped steel plate bracket 1;
d. lofting, namely drawing a real pattern of a channel 6 on the complete channel-shaped steel plate bracket 1 according to the shape and the size required by construction, and marking various processing marks to prepare for cutting and blanking of the steel plate bracket 1;
e. cutting, namely placing the steel plate bracket 1 on a cutting machine for slotting and cutting;
f. edge machining, namely cutting the edge of the channel 6 by 1-2mm in order to eliminate edge hardening caused by cutting, and finishing finally;
g. hole making: and drilling holes on the supporting legs 3 connected with the steel plate bracket by using a punching machine, an electric drill and an air drill.
The size of the steel plate bracket 1 is 250 x 78 x 7mm, the overall height is 900 x 1000mm, and the expansion bolts 2 are M16 x 200 mm.
The number of the channels 6 is 3-5, and the shape of the channels 6 is as follows: seen from the bottom surface of the waist 4 in the direction of extension of the wind and water duct 5, is L-shaped, rotated 90 ° clockwise.
In addition, the installation method of the wind and water pipeline fixing device for the underground excavated tunnel comprises the following steps of:
A. drilling holes at the designed position of the inner wall of the tunnel;
B. connecting the steel plate bracket 1 and the steel plate bracket through expansion bolts 2, and installing the expansion bolts 2 in the drill holes in the step A;
C. fixing the wind-water pipelines 5 in sections in corresponding channels 6, and then splicing and installing;
D. a rubber layer 7 is paved on the contact surface of the wind and water pipeline 5 and the channel 6 to ensure soft contact;
E. painting red and white warning paint on the wind and water pipeline 5 and the steel plate bracket 1;
F. pipeline signboard is hung neatly to same section, posts water pipe business turn over direction sign.
The mounting height of the wind-water pipeline fixing device is 2-3m away from the tunnel ground, and the thickness of the rubber layer 7 is 5-8mm and is arranged in the middle.
The surface of the tunnel where the steel plate bracket 1 is erected is uneven, and needs to be treated in advance to ensure the surface to be flat; the lengths of the pipelines are unified before the wind and water pipelines 5 are installed, and the joint positions are staggered from the positions of the steel plate support channels 1.
In order to further improve the technical effect of the present invention, in this embodiment, the steel blank of the steel plate bracket comprises the following components in parts by weight: cr10-15, Mn2-3, Ni10-12, C0.08-0.1, Si0.5-0.8, P0.01-002, S0.018-0.25, Cu4-5, Zn2-3, Nb0.08-0.1, B0.005-0.008, Ti0.08-0.1, V0.2-0.25, and the balance of Fe and inevitable impurities.
The preparation method of the steel billet comprises the following steps:
(1) pre-desulfurizing, controlling the sulfur content in the desulfurized molten iron;
(2) sequentially adding the batching material containing the even components into an electric arc furnace, electrifying, heating and melting, measuring the content of each component, preliminarily adjusting the content of each component according to the test result, slagging, and slagging off and tapping when the furnace temperature reaches 1700-1720 ℃;
(3) LF refining, wherein during the refining process, the materials are fully stirred for slagging and slagging, and the content of each component is adjusted again;
(4) continuously casting the molten steel into a steel billet under the conditions that the electromagnetic stirring current intensity of a crystallizer is 320-350A, the operating frequency is 5-8HZ, the temperature of a tundish is 1500-1510 ℃, the pulling speed is 1.5-2m/min, the secondary cooling specific water amount is 2-2.2L/kg, and the straightening temperature of a casting blank is 1200-1250 ℃; the secondary cooling specific water amount is as follows: the ratio of the total water consumed in the unit time of the second cooling area of the continuous casting machine to the mass of the casting blank passing through the second cooling area in the unit time is as follows: l/kg, which is an index of the secondary cooling water spray strength of continuous casting;
(5) the temperature of the steel billet is raised to 960-970 ℃ at the speed of 300-305 ℃ per hour, the temperature is kept for 1.5-1.8 hours, and the steel billet is cooled to the room temperature along with air; then raising the temperature to 560 ℃ and 580 ℃ at the rate of 175 ℃ and 185 ℃ per hour, and preserving the temperature for 2-3 hours; heating to 850-; then putting the mixture into liquid nitrogen for treatment for 2 to 3 hours;
(6) sending the steel billet into a heating furnace with the soaking section temperature of 1090-1100 ℃, heating for 100-110 minutes, then keeping the temperature of 890-920 ℃ and the speed of 1.5-2m/s, and carrying out rough rolling for 8-9 passes; then keeping the temperature at 920-950 ℃ and the speed at 9-10m/s, and performing finish rolling for 7-8 passes; keeping the cooling speed at 200-.
The tensile strength of the prepared billet is more than or equal to 920MPa, the yield strength is more than or equal to 900MPa, the billet has excellent low-temperature resistance, can be used for a long time at the temperature of minus 40 ℃, and keeps good mechanical properties.
The process has the characteristics of low production cost, strong process applicability, strong controllability and the like, and the steel billet of the steel plate bracket produced by the invention has the characteristics of high strength, high plastic toughness, good weldability, excellent shock resistance, low strain timeliness and the like, and has the advantages of good oxidation resistance, good intergranular corrosion resistance effect, good mechanical property and excellent comprehensive performance.
Example 3
Referring to fig. 1 and 2, the wind and water pipeline fixing device for the underground excavated tunnel comprises a steel plate support 1, steel plate brackets and expansion bolts 2, wherein the steel plate support 1 adopts 25a # channel steel, is arranged at intervals of 3-8m along the tunnel, and is fixed on the inner wall of the tunnel through the steel plate brackets and the expansion bolts 2; the landing leg 3 and the steel sheet bracket connection of one side wherein of steel sheet support 1, the waist 4 perpendicular to wind water pipe 5's of steel sheet support 1 extending direction sets up, and set up a plurality of channels 6 in succession on the landing leg 3 of the waist 4 of steel sheet support 1 and opposite side, a plurality of channels 6 set up from top to bottom for lay and fix wind water pipe 5.
The steel plate bracket 1 is manufactured in the following way:
a. rough rolling, namely rolling a rectangular billet into a U-shaped groove rolled piece, and performing presorting on a waist 4 and two supporting legs 3;
b. finish rolling, fully finishing the metal distribution of the waist 4 and the two supporting legs 3, and controlling the size and the shape of a rolled piece to enable the rolled piece to meet the technical requirements;
c. finishing rolling to stabilize the size and shape of the waist 4 and the two support legs 3 and finish the thermal deformation process; carrying out final processing on the size and the shape to roll out a complete groove-shaped steel plate bracket 1;
d. lofting, namely drawing a real pattern of a channel 6 on the complete channel-shaped steel plate bracket 1 according to the shape and the size required by construction, and marking various processing marks to prepare for cutting and blanking of the steel plate bracket 1;
e. cutting, namely placing the steel plate bracket 1 on a cutting machine for slotting and cutting;
f. edge machining, namely cutting the edge of the channel 6 by 1-2mm in order to eliminate edge hardening caused by cutting, and finishing finally;
g. hole making: and drilling holes on the supporting legs 3 connected with the steel plate bracket by using a punching machine, an electric drill and an air drill.
The size of the steel plate bracket 1 is 250 x 78 x 7mm, the overall height is 900 x 1000mm, and the expansion bolts 2 are M16 x 200 mm.
The number of the channels 6 is 3-5, and the shape of the channels 6 is as follows: seen from the bottom surface of the waist 4 in the direction of extension of the wind and water duct 5, is L-shaped, rotated 90 ° clockwise.
In addition, the installation method of the wind and water pipeline fixing device for the underground excavated tunnel comprises the following steps of:
A. drilling holes at the designed position of the inner wall of the tunnel;
B. connecting the steel plate bracket 1 and the steel plate bracket through expansion bolts 2, and installing the expansion bolts 2 in the drill holes in the step A;
C. fixing the wind-water pipelines 5 in sections in corresponding channels 6, and then splicing and installing;
D. a rubber layer 7 is paved on the contact surface of the wind and water pipeline 5 and the channel 6 to ensure soft contact;
E. painting red and white warning paint on the wind and water pipeline 5 and the steel plate bracket 1;
F. pipeline signboard is hung neatly to same section, posts water pipe business turn over direction sign.
The mounting height of the wind-water pipeline fixing device is 2-3m away from the tunnel ground, and the thickness of the rubber layer 7 is 5-8mm and is arranged in the middle.
The surface of the tunnel where the steel plate bracket 1 is erected is uneven, and needs to be treated in advance to ensure the surface to be flat; the lengths of the pipelines are unified before the wind and water pipelines 5 are installed, and the joint positions are staggered from the positions of the steel plate support channels 1.
In order to further improve the technical effect of the present invention, in this embodiment, the cutting process in the preparation process of the steel plate bracket 1 is as follows: after the steel plate bracket 1 is placed at a processing position on a cutting machine, the steel plate bracket is clamped by a clamp, engine oil is sprayed on the position to be cut and the peripheral surface of the position to be cut, after waiting for 10-15min, a laser cutter is used for moving cutting and slotting along a preset size, and water mist is sprayed on a cutting surface to cool the cutting surface.
Wherein the laser power for cutting is 2600-. The laser cutter comprises a laser extending longitudinally, a laser jet orifice arranged at the lower end of the laser and provided with openings at two ends, and a focusing mirror positioned in the laser jet orifice.
The cutting process is beneficial to improving the cutting effect and improving the quality of the cut surface. Meanwhile, the energy consumption is reduced, and the cost is reduced.
In addition, in order to ensure the technical effect of the invention, the technical schemes of the above embodiments can be reasonably combined.
According to the embodiment, the safety risk caused by insecure installation of the wind and water pipeline is effectively reduced, the installation quality of the wind and water pipeline is ensured, and smoothness and attractiveness of the wind and water pipeline are ensured.
The invention adopts the steel plate bracket to fix and adjust the wind-water pipeline, ensures the stability of the wind-water pipeline, effectively reduces the potential safety hazard of the wind-water pipeline, and has standard and beautiful site construction.
The steel plate bracket specially used in the invention ensures the strength and stability of the structure of the bracket, ensures the shape of the bracket, and can effectively improve the product percent of pass and the yield. And the construction process is simple, the cost is low, and the economic benefit is obvious.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (7)
1. The fixing device for the wind and water pipelines of the underground excavated tunnel is characterized by comprising a steel plate support (1), steel plate brackets and expansion bolts (2), wherein the steel plate support (1) adopts 25a # channel steel, one channel is arranged at intervals of 3-8m along the tunnel, and the steel plate brackets are fixed on the inner wall of the tunnel through the expansion bolts (2); landing leg (3) and the steel sheet bracket connection of one side wherein of steel sheet support (1), waist (4) perpendicular to geomantic omen pipeline (5) of steel sheet support (1) set up, and set up a plurality of channels (6) in succession on waist (4) of steel sheet support (1) and landing leg (3) of opposite side, a plurality of channels (6) set up from top to bottom for lay and fix geomantic omen pipeline (5).
2. The wind-water pipe fixing device of an underground excavated tunnel according to claim 1, wherein the steel plate bracket (1) is manufactured by:
a. rough rolling, namely rolling a rectangular billet into a U-shaped groove rolled piece, and performing presorting on the waist (4) and the two supporting legs (3);
b. finish rolling, fully finishing the metal distribution of the waist (4) and the two supporting legs (3), and controlling the size and the shape of a rolled piece to enable the rolled piece to meet the technical requirements;
c. finishing rolling to stabilize the size and shape of the waist (4) and the two support legs (3) and finish the thermal deformation process; carrying out final processing on the size and the shape to roll out a complete groove-shaped steel plate bracket (1);
d. lofting, namely drawing a real pattern of a channel (6) on the complete channel-shaped steel plate bracket (1) according to the shape and the size required by construction, and marking various processing marks to prepare for cutting and blanking of the steel plate bracket (1);
e. cutting, namely placing the steel plate bracket (1) on a cutting machine for slotting and cutting;
f. edge machining, namely cutting the edge of the channel (6) for 1-2mm in order to eliminate edge hardening caused by cutting, and finishing finally;
g. hole making: and drilling holes on the supporting legs (3) connected with the steel plate bracket by using a punching machine, an electric drill and an air drill.
3. The wind-water pipe fixing device for the underground excavated tunnel according to claim 1 or 2, wherein the steel plate bracket (1) has a size of 250 x 78 x 7mm, an overall height of 900 x 1000mm, and the expansion bolt (2) has a size of M16 x 200 mm.
4. A wind-water pipe fixing device of an underground excavated tunnel according to claim 3, wherein the number of the channels (6) is 3-5, and the shape of the channels (6) is: the wind and water pipeline (5) is in an L shape which is rotated by 90 degrees clockwise from the bottom surface of the waist (4) along the extending direction of the wind and water pipeline.
5. A method of installing a wind and water pipe fixing device for an underground excavated tunnel according to any one of claims 1 to 4, comprising the steps of:
A. drilling holes at the designed position of the inner wall of the tunnel;
B. connecting the steel plate bracket (1) and the steel plate bracket through expansion bolts (2), and installing the expansion bolts (2) in the drill holes in the step A;
C. fixing the wind-water pipelines (5) in corresponding channels (6) in sections, and then splicing and installing;
D. a rubber layer (7) is paved on the contact surface of the wind and water pipeline (5) and the channel (6) to ensure soft contact;
E. painting red and white warning paint on the wind and water pipeline (5) and the steel plate bracket (1);
F. pipeline signboard is hung neatly to same section, posts water pipe business turn over direction sign.
6. The installation method according to claim 5, wherein the installation height of the wind and water pipeline fixing device is 2-3m from the tunnel ground, and the thickness of the rubber layer (7) is 5-8mm and is arranged in the center.
7. The installation method according to claim 6, characterized in that the tunnel position where the steel plate bracket (1) is erected has an uneven surface, and needs to be treated in advance to ensure the surface to be even; the lengths of pipelines are unified before the wind and water pipelines (5) are installed, and the joint positions are staggered from the positions of the steel plate supports (1).
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| CN113756867B (en) | 2022-05-20 |
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