CN112065446B - Construction method of secondary lining trolley for oversized longitudinal slope tunnel - Google Patents
Construction method of secondary lining trolley for oversized longitudinal slope tunnel Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 33
- 239000004567 concrete Substances 0.000 claims abstract description 19
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000005484 gravity Effects 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 112
- 239000010959 steel Substances 0.000 claims description 112
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 235000014121 butter Nutrition 0.000 claims description 2
- 238000009415 formwork Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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Abstract
The invention discloses a construction method of a secondary lining trolley of an oversized longitudinal slope tunnel, which comprises the following steps: an anti-skid stop block is arranged at the bottom of one end of the longitudinal beam on the trolley; reinforcing the end template; after the trolley is in place, locking the trolley walking system by using an iron shoe; in order to prevent the trolley from overturning downwards when the first section of second lining concrete is poured, a balance weight is added at the tail part of a portal frame of the trolley; in the construction process, a stabilizing assembly is arranged for stabilizing the trolley so as to prevent the risks of 'sliding' and 'head warping' of the trolley and the like; the stabilizing assembly comprises an anti-sliding structure, a supporting lead screw structure positioned at the bottom of the trolley and a supporting structure used for supporting the trolley along the gravity direction; according to the construction method of the secondary lining trolley of the large-gradient tunnel, the anti-skidding stop blocks are arranged, the end formwork is reinforced, and the stability of the structure of the trolley can be improved; through setting up firm subassembly, can effectively increase the stability of platform truck on the rail, avoid it to take place accidents such as swift current car, improve the efficiency of construction, reduce construction cost.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to a construction method of a secondary lining trolley of an oversized longitudinal slope tunnel.
Background
In tunnel construction, secondary lining generally adopts the platform truck to be under construction, carries out the construction through the platform truck, and the efficiency of construction is high. In the construction process of the trolley method, in order to enable the trolley to walk without the risk of sliding, the maximum longitudinal slope of the road tunnel is generally required to be not more than 4%, and the maximum longitudinal slope of the railway tunnel is not more than 2%; when the gradient of the ramp on which the tunnel is located is larger than the value, the tunnel is called an oversized longitudinal slope tunnel. In the construction of the tunnel with the oversized longitudinal slope, on one hand, due to the gravity action of the trolley, on the other hand, downward and horizontal component forces exist in the trolley in the concrete pouring process, so that the trolley can run and tilt, and other risks are caused, and potential safety hazards are brought.
In order to ensure the construction safety, the cast-in-place formwork support method is generally adopted for construction in the construction of the oversized longitudinal slope tunnel, but the method has the defects of more construction procedures, more manpower input, long construction period, high cost and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a construction method of a secondary lining trolley for an oversized longitudinal slope tunnel.
In order to achieve the purpose, the invention adopts the technical scheme that:
a construction method of a secondary lining trolley of an oversized longitudinal slope tunnel comprises the following steps:
s1, top die anti-slip: when the trolley travels on a ramp and concretes, in order to prevent the vault template from separating from the portal frame from slipping downwards due to the obliquely downward gravity component, an anti-skid stop block is arranged at the bottom of the lower end of the upper longitudinal beam of the trolley;
s2, reinforcing an end die: a plurality of circumferential reinforcing steel pipes are fixed along the radial direction of the end template and are fixed together through steel pipe main ridges; preferably, the distribution density of the plurality of hoop reinforcement steel pipes increases as the distance between the plurality of hoop reinforcement steel pipes and the inverted arch decreases, namely, the lower end is encrypted; the steel pipe main ridges are arranged into two lines to form double steel pipe main ridges, so that the structural stability is better;
s3, locking a trolley traveling system by using iron shoes after the trolley is in place; in order to prevent the trolley from overturning downwards when the first section of second lining concrete is poured, a balance weight is applied to the tail part of the portal frame of the trolley; furthermore, a method for adding a balance weight at the tail part of the portal of the trolley is to adopt a hole outside loader and an automobile balance weight to pull. The reason is that the trolley is stabilized in a counterweight mode because the trolley does not have the condition of chain block traction and gliding prevention when the first section of second lining is poured with concrete;
in the construction process, a stabilizing assembly is arranged for stabilizing the trolley so as to prevent the risks of 'sliding' and 'head warping' of the trolley and the like; the stabilizing assembly comprises an anti-sliding structure, a supporting lead screw structure positioned at the bottom of the trolley and a supporting structure used for supporting the trolley along the gravity direction; wherein:
the anti-sliding structure comprises a chain block, an inverted arch ground anchor and a pull ring, wherein the inverted arch ground anchor is embedded in an inverted arch, and the pull ring is fixed on a lower longitudinal beam of the trolley; one end of the inverted chain is connected with an inverted arch ground anchor, and the other end of the inverted chain is connected with the pull ring; furthermore, eight groups of anti-sliding structures are arranged, wherein four groups are respectively arranged at two ends of the trolley, and two groups are respectively arranged at two sides of each end of the trolley; four groups positioned on the upper section of the slope are synchronously and uniformly released downwards, and four groups positioned on the lower section of the slope are reversed for use;
the supporting lead screw structure comprises a plurality of lead screws fixed at the bottom of the trolley and double-spliced I-shaped steel which is fixed on the steel rail and used for supporting the lead screws, and the double-spliced I-shaped steel is provided with a rail passing hole matched with the steel rail; a plurality of fixing bolts are embedded in the inverted arch, and the steel rail is fixed on the top surface of the inverted arch through the fixing bolts; further, the method for embedding the fixing bolt comprises the following steps: welding the bottom of the fixing bolt on a longitudinal steel bar of the inverted arch, then coating grease on a thread head section of the fixing bolt, and winding and wrapping the thread head section by using a transparent adhesive tape so as to protect the thread head from being polluted by concrete; when the steel rail is fixed, the transparent adhesive tape is removed; the steel rail is firmly fixed by using the buckle type fastener.
The supporting structure comprises a horizontal supporting platform arranged in an inverted arch and a wedge-shaped adjusting steel box positioned between the horizontal supporting platform and a trolley lower longitudinal beam, a plurality of reinforcing rib plates are fixed in the wedge-shaped adjusting steel box, and the overall strength of the wedge-shaped adjusting steel box is improved through the reinforcing rib plates; the upper end surface of the wedge-shaped adjusting steel box is parallel to an inclined plane where the bottom surface of the lower longitudinal beam of the trolley is located, and the wedge-shaped adjusting steel box can support the trolley in the vertical direction, so that the inertia effect of the trolley caused by gravity is reduced, and the trolley is in a relatively stable state; furthermore, a supporting leg is fixed at the top of the horizontal supporting table, and the wedge-shaped adjusting steel box is abutted against the top of the supporting leg;
after the trolley is in place, the hydraulic ejector rod is unloaded by returning oil of the hydraulic system in time, and the hydraulic ejector rod is prevented from being damaged due to bias voltage, so that the normal use of the trolley is prevented from being influenced.
As a preferable technical scheme, in the step S3, in the construction process, the template of the trolley and the constructed lining are subjected to lap joint treatment to increase the friction force between the trolley and the lining; and the pouring length of the secondary lining concrete of each section can be reduced;
as a preferred technical scheme, in the step S3, the stabilizing assembly further comprises an insurance steel wire rope, an inclined strut steel pipe and an end steel rail limiting plate; one end of the safety steel wire rope is fixedly connected with a lower longitudinal beam of the trolley, the other end of the safety steel wire rope is fixedly connected with an inverted arch ground anchor, the safety steel wire rope is provided with a length adjusting tightener, and the length of the safety steel wire rope is adjusted along with the downward movement of the trolley by adjusting the length tightener in the downward movement process of the trolley, so that the safety steel wire rope can be used for preventing the trolley from sliding due to the failure of a guide chain when the trolley travels downward, and has a double-safety effect; the inclined strut steel pipe is positioned at the lower section of the inverted arch slope, one end of the inclined strut steel pipe is supported on the trolley, and the other end of the inclined strut steel pipe is supported on the steel rail; the end steel rail limiting plate is arranged at the lower end part of the steel rail, the bottom of the end steel rail limiting plate is fixed in the inverted arch, and the end steel rail limiting plate has the function of enhancing the stability of the steel rail.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the construction method of the secondary lining trolley of the oversized longitudinal slope tunnel, the anti-skidding stop blocks are arranged on the upper longitudinal beams of the trolley, so that the vault template can be prevented from slipping downwards due to the influence of the slope and separated from the portal due to the downward component force of the slope, and local fine adjustment can be performed.
(2) According to the invention, the end template is reinforced through the annular reinforcing steel pipe and the steel pipe main edge, so that the stability of the trolley structure is improved, and the stability is better.
(3) The stability of the trolley on the steel rail can be effectively improved by arranging the stable components such as the anti-sliding structure, the supporting lead screw structure, the supporting structure and the like, and accidents such as sliding and overturning of the trolley caused by overlarge gradient of the ramp are avoided.
(4) The trolley construction method provided by the invention can overcome the defects of long construction period, high cost and the like in the construction of a cast-in-place formwork support method, remarkably improve the construction efficiency and accelerate the construction progress; meanwhile, the personnel investment can be reduced, and the construction cost is reduced.
Drawings
FIG. 1 is a front view of a trolley in a tunnel;
FIG. 2 is a schematic view of an end form reinforcement structure;
FIG. 3 is a side cross-sectional view of the trolley in the tunnel;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a schematic structural view of a support screw structure and a support structure;
FIG. 6 is a schematic structural diagram of a double-spliced I-shaped steel;
FIG. 7 is an indication diagram of the matching of double-spliced I-shaped steel and a steel rail;
FIG. 8 is a perspective view of a wedge-shaped adjusting steel box;
reference numerals: 100-trolley, 101-upper longitudinal beam, 102-lower longitudinal beam, 103-vault template, 104-end template, 200-inverted arch and 300-steel rail; 3-an anti-skid block, 4-a hoop reinforced steel pipe, 5-a steel pipe main ridge, 6-an iron shoe, 71-an anti-rolling structure, 711-a chain block, 712-an inverted arch ground anchor, 713-a pull ring, 72-a support screw structure, 721-a screw, 722-double-spliced I-steel, 723-a rail passing hole, 73-a support structure, 731-a horizontal bearing platform, 732-a wedge-shaped adjusting steel box, 733-a reinforcing rib plate, 734-a support leg, 8-a fixing bolt, 9-a steel rail, 11-a safety steel wire rope, 12-an inclined support steel pipe and 13-an end steel rail limiting plate.
Detailed Description
The invention is further described with reference to the following figures and examples. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
In the present invention, "fixed", "fixedly connected", "attached", and the like mean that two members connected to each other are fixed to each other, and are generally fixed to each other by welding, screws, or gluing.
In the description of the present invention, the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Engineering background
The cross section form of the Huaneng Qingyang coal electric rice family slope tunnel adopts a straight wall semicircular arch shape, and the net section size is as follows: clear width x clear height =4.0m x 3.6m. The tunnel exit section K2+ 2278-K2 +263.869 is a downhill of-28.675%, and belongs to an ultra-large longitudinal slope tunnel, and due to the fact that the construction period is short, the whole hydraulic lining trolley is adopted for construction, the self weight of the trolley is 46 tons, the gravity center of the two-lining construction trolley is close to the front, and the risks of 'vehicle sliding' and 'head warping' exist.
A construction method of a secondary lining trolley of an oversized longitudinal slope tunnel comprises the following steps:
s1, top die anti-slip: referring to fig. 1, when a trolley 100 travels on a slope and concrete is poured, an anti-skid block 3 is installed at the bottom of the lower end of a longitudinal beam 102 on the trolley; the anti-skid block 3 can not only prevent the vault template 103 from separating from the portal frame and sliding downwards due to the inclined downward component force under the influence of the slope, but also perform local fine adjustment;
s2, reinforcing an end die: referring to fig. 2, a plurality of hoop reinforcement steel pipes 4 are fixed along the radial direction of the end formwork 104, and the plurality of hoop reinforcement steel pipes 4 are fixed together by steel pipe main ridges 5; preferably, the distribution density of the plurality of hoop reinforcement steel pipes 4 increases as the distance between the hoop reinforcement steel pipes and the inverted arch decreases, i.e., the lower end is encrypted; the steel pipe main ridges 5 are arranged in two ways to form double steel pipe main ridges, so that the structural stability is better;
s3, referring to the figures 3-8, after the trolley is in place, locking the trolley traveling system by using the iron shoes 6; in order to prevent the trolley from overturning downwards when the first section of second lining concrete is poured, a balance weight is applied to the tail part of the portal frame of the trolley; the method for adding the balance weight to the tail part of the gantry of the trolley comprises the following steps: the tunnel outside loader and the automobile counterweight pulling are adopted. The reason is that the trolley is stabilized in a counterweight mode because the trolley does not have the condition of chain block traction and gliding prevention when the first section of second lining is poured with concrete;
in the construction process, a stabilizing assembly is arranged for stabilizing the trolley so as to prevent the risks of 'sliding' and 'head warping' of the trolley and the like; the stabilizing assembly comprises an anti-sliding trolley structure 71, a supporting lead screw structure 72 positioned at the bottom of the trolley and a supporting structure 73 for supporting the trolley along the gravity direction; wherein:
the anti-rolling structure 71 comprises a chain block 711, an inverted arch ground anchor 712 embedded in an inverted arch 200 and a pull ring 713, wherein the pull ring 713 is fixed on a lower longitudinal beam 102 of the trolley; one end of the inverted chain 711 is connected with an inverted arch ground anchor 712, and the other end of the inverted chain 711 is connected with a pull ring 713; furthermore, the anti-sliding structure 71 is provided with eight groups, wherein two ends of the trolley are provided with four groups respectively, and two sides of each end of the trolley are provided with two groups respectively; four groups positioned on the upper section of the slope are synchronously and uniformly released downwards, and four groups positioned on the lower section of the slope are reversed for use;
the supporting lead screw structure 72 comprises a plurality of lead screws 721 fixed at the bottom of the trolley and double-spliced I-shaped steel 722 fixed on the steel rail 300 and used for supporting the lead screws, and the double-spliced I-shaped steel 722 is provided with a rail passing hole 723 matched with the steel rail 300; a plurality of fixing bolts 8 are embedded in the inverted arch 200, and the steel rail 200 is fixed on the top surface of the inverted arch through the fixing bolts 8; further, the method for embedding the fixing bolt comprises the following steps: welding the bottom of the fixing bolt 8 on a longitudinal steel bar of the inverted arch, then smearing butter on a thread head section of the fixing bolt, and winding and wrapping the thread head section by using a transparent adhesive tape so as to protect the thread head from being polluted by concrete; when the steel rail is fixed, the transparent adhesive tape is removed; finally, the steel rail is firmly fixed by using the buckle type fastener.
The supporting structure 73 comprises a horizontal supporting platform 731 arranged in the inverted arch 200 and a wedge-shaped adjusting steel box 732 positioned between the horizontal supporting platform 731 and the trolley lower longitudinal beam 102, a plurality of reinforcing ribs 733 are fixed in the wedge-shaped adjusting steel 732, and the overall strength of the wedge-shaped adjusting steel box 732 is improved through the reinforcing ribs 733; the upper end surface of the wedge-shaped adjusting steel box 732 is parallel to the inclined plane where the bottom surface of the lower longitudinal beam 102 of the trolley is located, and the wedge-shaped adjusting steel box 732 can support the trolley 100 in the vertical direction, so that the inertia effect of the trolley caused by gravity is reduced, and the trolley is in a relatively stable state; further, a supporting leg 734 is fixed on the top of the horizontal supporting platform 731, and the wedge-shaped adjusting steel box 732 abuts against the top of the supporting leg 734;
in the construction process, after the trolley is in place, the hydraulic ejector rod needs to be unloaded by returning oil of the hydraulic system in time, and the hydraulic ejector rod is prevented from being damaged due to bias voltage, so that the normal use of the trolley is prevented from being influenced.
In step S3, in a preferable embodiment, in the construction process, a template of the trolley and a constructed lining are subjected to lap joint treatment to increase friction between the trolley and the lining; and the pouring length of the secondary lining concrete of each section can be reduced; in the project, the lapping distance of lapping treatment is 1.5 m, the pouring length of each section of secondary lining concrete is controlled within 9 m, and the pouring height of the concrete is controlled not to exceed 1m per hour; concrete grout returning pipes are pre-embedded in the arch crown of the upward slope section of the trolley, so that whether the concrete at the arch crown is compacted or not can be observed;
preferably, in step S3, the stabilizing assembly further includes a safety steel wire rope 11, an inclined strut steel pipe 12, and an end rail limiting plate 13; one end of the safety steel wire rope 11 is fixedly connected with the lower longitudinal beam 102 of the trolley, the other end of the safety steel wire rope is fixedly connected with the inverted arch ground anchor 712, the safety steel wire rope 11 is provided with a length adjusting tightener (not shown in the figure), and the length of the safety steel wire rope is adjusted along with the downward movement of the trolley by adjusting the length tightener in the downward movement process of the trolley, so that the safety steel wire rope can be used for preventing the trolley from sliding caused by the failure of a guide chain when the trolley travels downward, and has a double-safety function; in the construction process of the project, the inclined strut steel pipe is a phi 108 steel pipe, and the left side and the right side are respectively provided with two inclined strut steel pipes; the inclined strut steel pipe 12 is positioned at the lower section of the inverted arch slope, one end of the inclined strut steel pipe 12 is supported on the trolley, and the other end of the inclined strut steel pipe 12 is supported on the steel rail 300; the end steel rail limiting plate 13 is arranged at the lower end part of the steel rail, the bottom of the end steel rail limiting plate 13 is fixed in the inverted arch 200, and the end steel rail limiting plate has the function of enhancing the stability of the steel rail.
By arranging the stable components such as the anti-sliding structure 71, the supporting screw rod structure 72, the supporting structure 73 and the like, the stability of the trolley on the steel rail can be effectively improved, and accidents such as sliding and overturning of the trolley caused by overlarge gradient of the ramp are avoided. The trolley construction method provided by the invention can overcome the defects of long construction period, high cost and the like in the construction of a cast-in-place formwork support method, remarkably improve the construction efficiency and accelerate the construction progress; meanwhile, the personnel investment can be reduced, and the construction cost is reduced.
Claims (8)
1. A construction method of a secondary lining trolley of an oversized longitudinal slope tunnel is characterized by comprising the following steps: the method comprises the following steps:
s1, when a trolley travels on a ramp and concrete is poured, in order to prevent a vault template from separating from a portal and sliding downwards due to the downward oblique gravity component, an anti-skid stop block is installed at the bottom of the lower end of an upper longitudinal beam of the trolley;
s2, fixing a plurality of annular reinforcing steel pipes along the radial direction of the end template, wherein the plurality of annular reinforcing steel pipes are fixed together through steel pipe main ridges;
s3, locking the trolley traveling system by using the iron shoes after the trolley is in place; in order to prevent the trolley from overturning downwards when the first section of second lining concrete is poured, a balance weight is applied to the tail part of the portal frame of the trolley; in the construction process, a stabilizing assembly is arranged for stabilizing the trolley; the stabilizing assembly comprises an anti-sliding structure, a supporting lead screw structure positioned at the bottom of the trolley and a supporting structure used for supporting the trolley along the gravity direction; wherein:
the anti-sliding structure comprises a chain block, an inverted arch ground anchor and a pull ring, wherein the inverted arch ground anchor is embedded in an inverted arch, and the pull ring is fixed on a lower longitudinal beam of the trolley; one end of the inverted chain is connected with an inverted arch ground anchor, and the other end of the inverted chain is connected with the pull ring;
the support lead screw structure comprises a plurality of lead screws fixed at the bottom of the trolley and double-spliced I-shaped steel fixed on the steel rail and used for supporting the lead screws, and the double-spliced I-shaped steel is provided with a rail passing hole matched with the steel rail; a plurality of fixing bolts are pre-embedded in the inverted arch, and the steel rail is fixed on the top surface of the inverted arch through the fixing bolts;
the supporting structure comprises a horizontal supporting platform arranged in the inverted arch and a wedge-shaped adjusting steel box positioned between the horizontal supporting platform and the trolley lower longitudinal beam; the upper end face of the wedge-shaped adjusting steel box is parallel to an inclined plane where the bottom face of the lower longitudinal beam of the trolley is located.
2. The method of claim 1, wherein: in step S2, the distribution density of the plurality of hoop reinforcement steel pipes increases as the distance between the hoop reinforcement steel pipes and the inverted arch decreases; the main edge of the steel pipe is arranged into two channels.
3. The method of claim 1, wherein: in the step S3, a method for applying the balance weight to the tail part of the portal frame of the trolley is to adopt a hole outside loader and an automobile balance weight to pull.
4. The method of claim 1, wherein: in the step S3, eight groups of anti-sliding structures are arranged, wherein four groups are respectively arranged at two ends of the trolley, and two groups are respectively arranged at two sides of each end of the trolley; and a plurality of reinforcing rib plates are fixed in the wedge-shaped adjusting steel box.
5. The method of claim 1, wherein: in step S3, the method for embedding the fixing bolt includes: welding the bottom of the fixing bolt on a longitudinal steel bar of the inverted arch, then smearing butter on a thread head section of the fixing bolt, and winding and wrapping the thread head section by using a transparent adhesive tape so as to protect the thread head from being polluted by concrete; when the steel rail is fixed, the transparent adhesive tape is removed.
6. The method of claim 1, wherein: in the step S3, in the construction process, the template of the trolley and the constructed lining are subjected to lap joint treatment so as to increase the friction force between the trolley and the lining.
7. The method of claim 1, wherein: in the step S3, the stabilizing assembly further comprises a safety steel wire rope, an inclined strut steel pipe and an end steel rail limiting plate; one end of the safety steel wire rope is fixedly connected with a lower longitudinal beam of the trolley, the other end of the safety steel wire rope is fixedly connected with the inverted arch ground anchor, and a wire tightener for adjusting the length is arranged on the safety steel wire rope; the inclined strut steel pipe is positioned at the lower section of the inverted arch slope, one end of the inclined strut steel pipe is supported on the trolley, and the other end of the inclined strut steel pipe is supported on the steel rail; the end steel rail limiting plate is arranged at the lower end part of the steel rail, and the bottom of the end steel rail limiting plate is fixed in the inverted arch.
8. The method of claim 1, wherein: in the step S3, the top of the horizontal supporting table is fixedly provided with a supporting leg, and the wedge-shaped adjusting steel box is abutted against the top of the supporting leg.
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| CN202010904089.XA CN112065446B (en) | 2020-09-01 | 2020-09-01 | Construction method of secondary lining trolley for oversized longitudinal slope tunnel |
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| CN202010904089.XA CN112065446B (en) | 2020-09-01 | 2020-09-01 | Construction method of secondary lining trolley for oversized longitudinal slope tunnel |
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| CN112065446B true CN112065446B (en) | 2022-11-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH459900A (en) * | 1966-07-07 | 1968-07-15 | Atlas Copco Ab | Method for producing a tie rod in the ground, and device for carrying out the method |
| BE848594A (en) * | 1976-10-15 | 1977-03-16 | AUXILIARY SUPPORT FOR THE PASSAGE FROM PRUNING TO THE GALLERY, | |
| CN206722855U (en) * | 2017-05-08 | 2017-12-08 | 中国水利水电第一工程局有限公司 | The anti-skidding current mobile steel mould trolley of inclined shaft concrete |
| CN207634089U (en) * | 2017-11-22 | 2018-07-20 | 陕西中铁延惠机械有限公司 | A kind of High angle tunnel double-lining formwork jumbo device |
| CN109339101A (en) * | 2018-11-21 | 2019-02-15 | 杭州江润科技有限公司 | Cast-in-place pipe gallery and construction method |
-
2020
- 2020-09-01 CN CN202010904089.XA patent/CN112065446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH459900A (en) * | 1966-07-07 | 1968-07-15 | Atlas Copco Ab | Method for producing a tie rod in the ground, and device for carrying out the method |
| BE848594A (en) * | 1976-10-15 | 1977-03-16 | AUXILIARY SUPPORT FOR THE PASSAGE FROM PRUNING TO THE GALLERY, | |
| CN206722855U (en) * | 2017-05-08 | 2017-12-08 | 中国水利水电第一工程局有限公司 | The anti-skidding current mobile steel mould trolley of inclined shaft concrete |
| CN207634089U (en) * | 2017-11-22 | 2018-07-20 | 陕西中铁延惠机械有限公司 | A kind of High angle tunnel double-lining formwork jumbo device |
| CN109339101A (en) * | 2018-11-21 | 2019-02-15 | 杭州江润科技有限公司 | Cast-in-place pipe gallery and construction method |
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| CN112065446A (en) | 2020-12-11 |
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