CN114046171A - High-strength integrally-cast tunnel ventilation shaft and construction method - Google Patents
High-strength integrally-cast tunnel ventilation shaft and construction method Download PDFInfo
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- CN114046171A CN114046171A CN202111323915.2A CN202111323915A CN114046171A CN 114046171 A CN114046171 A CN 114046171A CN 202111323915 A CN202111323915 A CN 202111323915A CN 114046171 A CN114046171 A CN 114046171A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/12—Accessories for making shaft linings, e.g. suspended cradles, shutterings
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Abstract
The invention relates to the technical field of tunnel ventilation shafts, and provides a high-strength integrally cast tunnel ventilation shaft and a construction method thereof, which comprises a working platform arranged in the ventilation shaft in a moving way, a conveying assembly arranged in the ventilation shaft and a prefabricated mold for the cast prefabricated ventilation shaft, wherein the prefabricated mold comprises a cylindrical first template and a second template, the first template is provided with a template cavity, the second template is arranged in the template cavity, the third template is provided with a structure the same as that of the second template, the third template and the second template are symmetrically arranged in the template cavity, the second template and the third template form a first partition plate casting cavity, the first template, the second template and the third template jointly form a first shaft pouring cavity, the first middle clapboard pouring cavity is communicated with the first shaft pouring cavity, and the rib structure layer is arranged in the first middle clapboard pouring cavity and the first shaft pouring cavity. Through the technical scheme, the problems of poor structural integrity and low construction speed of the shaft in the related technology are solved.
Description
Technical Field
The invention relates to the technical field of tunnel ventilation shafts, in particular to a high-strength integrally-cast tunnel ventilation shaft and a construction method.
Background
In the process of building an extra-long tunnel, in order to improve the environment inside the tunnel and facilitate the construction of the tunnel, the ventilation, slag abandonment and building material transportation and drainage of the tunnel often become the main problems restricting the engineering progress, while the establishment of the inclined shaft can solve the problems, effectively establish the ventilation shaft, effectively improve the construction efficiency and the safety inside the tunnel, in the later operation management of the tunnel, the operation ventilation of the tunnel is realized by the inclined shaft, in the prior art, a shaft is internally provided with a middle partition plate, one shaft can be used for two purposes, the ventilation shaft at the present stage mainly needs to respectively construct the shaft and the middle partition plate, firstly supports the shaft anchor net to the bottom, then builds the middle partition plate, but has poor integrity on the structure and has safety risk, and meanwhile, long-time manual operation needs to be carried out at the shaft bottom, and the templates are spliced on site at the shaft bottom, the construction speed is slow, and the structural strength cannot be guaranteed due to construction conditions.
Disclosure of Invention
The invention provides a high-strength integrally-cast tunnel ventilation shaft and a construction method, and solves the problems of poor structural integrity and low construction speed of a shaft in the related technology.
The technical scheme of the invention is as follows:
the utility model provides a tunnel ventilation shaft that high strength was cast entirely, is in including being used for removing the work platform that sets up in the ventilation shaft and being used for setting up transport assembly in the ventilation shaft, still includes the prefabricated mould that is used for the prefabricated ventilation pit shaft of pouring, prefabricated mould includes
The first template is cylindrical and is provided with a template cavity which is communicated up and down,
a second template arranged in the template cavity,
a third template which has the same structure as the second template, the third template and the second template are symmetrically arranged in the template cavity, the second template and the third template form a first intermediate clapboard casting cavity, the first template, the second template and the third template together form a first shaft casting cavity, the first intermediate clapboard casting cavity is communicated with the first shaft casting cavity,
and the rib structure layer is arranged in the first middle clapboard pouring cavity and the first shaft pouring cavity and is used for pouring a formed concrete layer.
As a further technical solution, the second template and the third template both comprise
A top plate arranged at the top end of the first template,
a bottom plate arranged at the bottom end of the first template,
the arc-shaped plates, the rib plates and the middle plates which are connected in sequence are all arranged between the top plate and the bottom plate, the inner wall of the template cavity and the two arc-shaped plates which are symmetrically arranged jointly form the first shaft pouring cavity, and the two rib plates, the two middle plates, the two top plates and the two bottom plates which are symmetrically arranged are matched to form the first middle clapboard pouring cavity.
As a further technical scheme, the top plate and the bottom plate are both annular baffles and are provided with inclined planes facing the same direction, the top plate is provided with a plurality of through holes, the rib structure layer is provided with a reserved connecting part, the reserved connecting part extends out of the through holes, the bottom plate is provided with a first bulge matched with the through holes and used for enabling the bottom surface of the prefabricated ventilation shaft to form a first groove, and the reserved connecting part is used for extending into the first groove of the adjacent prefabricated ventilation shaft.
As a further technical scheme, the first template is provided with a plurality of protrusions penetrating through the cavity of the template, and the protrusions are used for enabling the side face of the prefabricated ventilation shaft to form a second groove.
As a further technical solution, the conveying assembly comprises
A plurality of bases which are uniformly arranged on the wall of the ventilation shaft and are all arranged in the ventilation shaft from top to bottom, the distances between one surfaces of the bases and the center of the ventilation shaft are equal,
a plurality of rails which are respectively and correspondingly arranged on the base,
and the supporting brackets are arranged on the tracks in a sliding manner, and are matched with each other to clamp the prefabricated ventilation shaft.
As a further aspect, the support bracket comprises
A slider having a third groove fitting the rail, the slider being slidably disposed on the rail through the third groove,
a threaded rod disposed on the slider by a threaded connection,
and the bearing plate is arranged on the threaded rod and moves along with the rotation of the threaded rod.
As a further technical solution, the working platform comprises
The hanging scaffold is provided with a plurality of layers and movably arranged in the ventilation shaft, and the hanging scaffold on the plurality of layers is provided with corresponding installation gaps.
As a further technical scheme, the ventilating shaft structure further comprises two fourth templates which have the same structure as the second template, the fourth templates penetrate through the installation gap, a second middle partition pouring cavity is formed between the two fourth templates, the two fourth templates and the wall of the ventilating shaft form a second shaft pouring cavity, and the second middle partition pouring cavity is communicated with the second shaft pouring cavity.
As a further technical scheme, the plurality of layers of the hanging scaffold are divided into three parts, a first part to a third part are sequentially arranged from top to bottom, the first part is an integral hanging scaffold, the first part and the second part are rigidly connected through an upright post, and the second part and the third part are connected through a flexible connecting piece.
A construction method of a high-strength integrally cast tunnel ventilation shaft comprises the following steps:
A. prefabricating a ventilated shaft: symmetrically placing the second template and the third template in the template cavity of the first template to form a first shaft pouring cavity and a first middle clapboard pouring cavity, after the rib structure layer is arranged in the first shaft pouring cavity and the first middle clapboard pouring cavity, injecting concrete into the first shaft pouring cavity and the first middle clapboard pouring cavity, demoulding after the concrete is cooled, taking out the prefabricated ventilation shaft, and manufacturing the prefabricated ventilation shaft with required quantity according to the above mode,
B. pouring a bottom layer ventilation shaft: arranging the conveying assembly and the working platform in the ventilation shaft, arranging two fourth templates at the bottom of the ventilation shaft through the working platform, enabling the two fourth templates to penetrate through the installation gap, forming a second middle partition plate pouring cavity between the two fourth templates, enabling the two fourth templates and the wall of the ventilation shaft to form a second shaft pouring cavity, pouring concrete into the second shaft pouring cavity and the second middle partition plate pouring cavity, demoulding after the concrete is cooled, and disassembling the fourth templates,
C. assembling the prefabricated ventilation shaft: through the adjustment the threaded rod makes a plurality of the support bracket presss from both sides tightly prefabricated ventilation pit shaft, through hoisting equipment, will prefabricated ventilation pit shaft is followed the track slides to the shaft bottom, prefabricated ventilation pit shaft and bottom cooling's ventilation pit shaft cooperation, the ventilation pit shaft of bottom reserve connecting portion and stretch into prefabricated ventilation pit shaft in the first recess, prefabricated ventilation pit shaft with the wall of a well formation clearance of ventilation shaft injects the concrete into the clearance, the cooperation the second recess forms wholly, sets gradually according to above mode prefabricated ventilation pit shaft up to the ventilation shaft well head.
The working principle and the beneficial effects of the invention are as follows:
in the prior art, a middle partition plate is arranged in a shaft, one shaft can be used for two purposes, the shaft and the middle partition plate are required to be constructed respectively, the shaft anchor net is supported to the bottom firstly, then the middle partition plate is built, the integrity is poor in structure, safety risks exist, long-time manual operation is required to be carried out at the shaft bottom, templates are spliced on the shaft bottom on site, the construction speed is low, and the structural strength cannot be guaranteed due to construction conditions.
The invention solves the problems of poor structural integrity and low construction speed of a shaft in the related technology, designs a high-strength integrally cast tunnel ventilation shaft, manufactures a prefabricated ventilation shaft through a prefabricated mould, and integrally casts by taking the prefabricated ventilation shaft as the mould after splicing the prefabricated ventilation shaft on site, because the prefabricated ventilation shaft can be manufactured in an open area, the operation is more convenient compared with the mould assembly at the shaft bottom, and simultaneously, the manufactured prefabricated ventilation shaft has more complete structure, the problem that the field observation cannot be carried out due to the underground assembly is avoided, so that flaws appear during the casting, meanwhile, the prefabricated ventilation shaft can have a longer barrel body compared with the mould assembled on site at the shaft bottom, the structural integrity is stronger, and the structural strength has better stability compared with the short ventilation shaft at the shaft bottom, the prefabricated ventilation shaft can be simultaneously manufactured in a plurality of open places, so that the manufacturing period is greatly shortened, and the production cost is effectively reduced.
Specific embodiment, first template through the cylindricality is as the ladle body, the diameter of first template will be less than the well head diameter, second template and third template symmetry set up in the template cavity of first template, it pours cavity and intermediate bottom pouring cavity to enclose first pit shaft jointly, it sets up the muscle structural layer to pour cavity and intermediate bottom pouring cavity at the pit shaft of intercommunication, can make the preset ventilation pit shaft of pouring have better integrality, make required quantity back through this kind of mode, transport the back through transport assembly in the well, assemble again, pour to pouring between barrel body and the wall of a well, make the integration more of structure, intensity further promotes, can effectually reduce the time limit for a project through this kind of mode, strengthen structural strength, the effectual manufacturing cost and the time cost of having reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic top view of a prefabricated mold according to the present invention;
FIG. 2 is a schematic cross-sectional view of the prefabricated mold of the present invention;
FIG. 3 is a schematic representation of a prefabricated ventilation wellbore configuration of the present invention;
FIG. 4 is a schematic view of the structure of the conveyor assembly of the present invention;
FIG. 5 is a schematic representation of a vented wellbore configuration of the present invention;
FIG. 6 is a schematic view of the construction of the working platform of the present invention;
in the figure: 1. a ventilation shaft, 2, a working platform, 3, a conveying assembly, 4, a prefabricated ventilation shaft, 5, a prefabricated mould, 6, a first template, 7, a template cavity, 8, a second template, 9, a third template, 10, a first middle clapboard casting cavity, 11, a first shaft casting cavity, 12, a rib structure layer, 13, a top plate, 14, a bottom plate, 15, an arc plate, 16, a rib plate, 17, a middle plate, 18, a bevel surface, 19, a through hole, 20, a reserved connecting part, 21, a first groove, 22, a bulge, 23, a second groove, 24, a base, 25, a rail, 26, a support bracket, 27, a slide, 28, a third groove, 29, a threaded rod, 30, a support plate, 31, a hanging disc, 32, an installation gap, 33, a fourth template, 34, a second middle clapboard casting cavity, 35, a second shaft casting cavity, 36, a first part, 37, a third part, 38 and a second part, 39. a first protrusion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1 to 6, the present embodiment proposes
The utility model provides a tunnel ventilation shaft 1 that high strength was integrally poured, is including being arranged in removing work platform 2 that sets up in ventilation shaft 1 and being arranged in conveying component 3 of ventilation shaft 1, still includes the prefabricated mould 5 that is used for 1 section of thick bamboo of prefabricated ventilation shaft of pouring, and prefabricated mould 5 includes
The first template 6 is cylindrical and is provided with a template cavity 7 which is communicated up and down,
a second template 8, arranged in the template cavity 7,
a third template 9 with the same structure as the second template 8, wherein the third template 9 and the second template 8 are symmetrically arranged in the template cavity 7, the second template 8 and the third template 9 form a first intermediate clapboard casting cavity 10, the first template 6, the second template 8 and the third template 9 together form a first shaft casting cavity 11, the first intermediate clapboard casting cavity 10 is communicated with the first shaft casting cavity 11,
and the rib structure layer 12 is arranged in the first middle clapboard casting cavity 10 and the first shaft casting cavity 11 and is used for casting a formed concrete layer.
In the prior art, a middle partition plate is arranged in a shaft, one shaft can be used for two purposes, the shaft and the middle partition plate are required to be constructed respectively in the 1 tube of the ventilation shaft at the present stage, firstly, a shaft anchor net is supported to the bottom, then, the middle partition plate is built, the integrity is poor in the structural aspect, safety risks exist, long-time manual operation is required to be carried out at the shaft bottom, templates are spliced on the shaft bottom on site, the construction speed is low, and the structural strength cannot be guaranteed due to construction conditions.
In the embodiment, the problems of poor structural integrity and low construction speed of a shaft in the related art are solved by designing a high-strength integrally-cast tunnel ventilation shaft 1, manufacturing a prefabricated ventilation shaft 1 cylinder through a prefabricated mould 5, splicing the prefabricated ventilation shaft 1 cylinders on site, and then integrally casting by using the prefabricated ventilation shaft 1 cylinder as a mould, wherein the prefabricated ventilation shaft 1 cylinder can be manufactured in an open area, so that the operation is more convenient compared with the mould assembly at the shaft bottom, and meanwhile, the manufactured prefabricated ventilation shaft 1 cylinder structure can be more complete, the phenomenon that the field observation cannot be carried out due to underground assembly is avoided, so that flaws are generated during casting, meanwhile, the prefabricated ventilation shaft 1 cylinder can have a longer cylinder body compared with the mould assembled on site at the shaft bottom, the structural integrity is stronger, and the structural strength has better stability compared with a short ventilation shaft 1 cylinder at the shaft bottom, a plurality of prefabricated ventilation shaft 1 section of thick bamboo can be made simultaneously in spacious place, has reduced the preparation time limit for a project by a wide margin, the effectual manufacturing cost that has reduced.
Specific embodiment, first template 6 through the cylindricality is as the ladle body, first template 6's diameter will be less than the well head diameter, second template 8 and third template 9 symmetry set up in first template 6's template cavity 7, it pours cavity 11 and intermediate bottom board and pours the cavity to enclose first pit shaft jointly, it sets up muscle structural layer 12 to pour cavity and intermediate bottom board in the pit shaft of intercommunication and pour the cavity, can make 1 section of thick bamboo of preset ventilating shaft poured have better integrality, make required quantity through this kind of mode after, transport the back through transport assembly 3 in the well, assemble again, pour between barrel body and the wall of a well, make the integration that the structure is more, intensity further promotes, can effectually reduce the time limit for a project through this kind of mode, strengthen structural strength, the effectual manufacturing cost and the time cost of having reduced.
Further, the second template 8 and the third template 9 each comprise
A top plate 13 arranged on the top end of the first template 6,
a bottom plate 14 arranged at the bottom end of the first template 6,
the arc-shaped plates 15, the rib plates 16 and the middle plates 17 which are connected in sequence are all arranged between the top plate 13 and the bottom plate 14, the inner wall of the template cavity 7 and the two arc-shaped plates 15 which are symmetrically arranged jointly form a first shaft pouring cavity 11, and the two rib plates 16, the two middle plates 17, the two top plates 13 and the two bottom plates 14 which are symmetrically arranged jointly form a first middle clapboard pouring cavity 10.
In this embodiment, the form of second template 8 and third template 9 has specifically been refined, roof 13 and bottom plate 14 all have and regard as upper and lower shrouding, there is arc 15 that connects gradually in the centre, gusset 16 and intermediate lamella 17, cavity 11 is pour to two arcs 15 that 7 inner walls of template cavity and symmetry set up enclose into first pit shaft jointly, two gusset 16 that equal symmetry set up, two intermediate lamellas 17, two roof 13 and two bottom plates 14 cooperate to enclose into first median septum and pour cavity 10, can make median septum and pit shaft integrated into one piece through this kind of form, compare separately pouring among the prior art, this scheme has better wholeness, intensity also promotes by a wide margin.
Further, roof 13 and bottom plate 14 are the annular baffle, all have the inclined plane 18 towards same direction, and roof 13 has a plurality of thru hole 19, and muscle structural layer 12 has and reserves connecting portion 20, reserves connecting portion 20 and stretches out from thru hole 19, and bottom plate 14 has the first arch 3922 of a plurality of thru hole 19 of cooperation for make 1 section of thick bamboo bottom surface of prefabricated ventilation shaft form first recess 21, reserve connecting portion 20 and be used for stretching into the first recess 21 of 1 section of thick bamboo of adjacent prefabricated ventilation shaft.
In this embodiment, in order to make the prefabricated ventilation shaft 1 more efficient in splicing, the top plate 13 and the bottom plate 14 are provided as annular baffles, each having a slope 18 facing one side, and in order to make the prefabricated ventilation shaft 1 more efficient in splicing, the shaft can be coaxially arranged by the self gravity through the guiding of the inclined plane 18, the installation of operators is convenient, the installation efficiency is increased, the top plate 13 is provided with a through hole 19 which can lead the reserved connecting part 20 to extend out, the bottom plate 14 is provided with a first groove 21 which is matched with the reserved connecting part 20, in the splicing process, the first groove 21 and the reserved connecting part 20 are accurately matched, in the final pouring process, the reserved connecting part 20 and the first groove 21 are fixed together through pouring liquid, the integrity of a shaft is further improved, through this scheme can make more complete, the installation of structure more convenient, structural strength further promotes.
Further, the first form 6 has a plurality of protrusions 22 penetrating the cavity 7 of the form for forming a second groove 23 in the side of the barrel of the prefabricated ventilation shaft 1.
In this embodiment, in order to make 1 section of thick bamboo of prefabricated ventilating shaft after the concatenation can have better wholeness when pouring, form second recess 23 in the side of 1 section of thick bamboo of prefabricated ventilating shaft, can make 1 section of thick bamboo of prefabricated ventilating shaft and the liquid of pouring of newly pouring form the joint when pouring to realize promoting the structural wholeness, further strengthen the intensity of structure.
Further, the conveying assembly 3 comprises
A plurality of bases 24 which are uniformly arranged on the wall of the ventilation shaft 1 and are arranged in the ventilation shaft 1 from top to bottom, the distances between one surfaces of the plurality of bases 24 and the center of the ventilation shaft 1 are equal,
a plurality of rails 25, which are respectively and correspondingly arranged on the base 24,
and the supporting brackets 26 are provided with a plurality of supporting brackets, the supporting brackets are arranged on the rails 25 in a sliding mode, and the plurality of supporting brackets 26 are matched to clamp the prefabricated ventilation shaft 1.
In this embodiment, in order to make the transport to the pit that prefabricated ventilation shaft can be smooth, a conveying assembly 3 has been set up, through setting up a plurality of base 24 on the wall of a well, thereby make track 25 can keep the plane degree of regulation, make the pit shaft can be more stable when the transportation, set up the supporting piece that can slide on track 25, through a plurality of supporting piece with 1 section of thick bamboo clamp back of prefabricated ventilation shaft, again to the well transportation, simultaneously supporting piece, base 24 and track 25 can stay in the well as muscle structural layer 12, increase the structural strength in the well when pouring, the practicality and the convenience of equipment have further been promoted, make the intensity of structure further promote simultaneously.
Further, support bracket 26 includes
A slide 27 having a third groove 28 for engaging the rail 25, the slide 27 being slidably disposed on the rail 25 via the third groove 28,
a threaded rod 29, which is arranged on the slide 27 by means of a threaded connection,
and a support plate 30 disposed on the threaded rod 29 and moving with the rotation of the threaded rod 29.
In this embodiment, a supporting bracket 26 is refined, a supporting plate 30 with adjustable height is arranged on the supporting member, and the height of the supporting plate 30 is adjusted by the cooperation of the threaded rod 29 and the slide member 27, so that the supporting plate 30 can clamp the prefabricated ventilation shaft 1, the structure is more complete and stable, and the integrity of the equipment is further improved.
Further, the working platform 2 comprises
The hanging scaffold 31 is provided with a plurality of layers and movably arranged in the ventilation shaft 1, and the hanging scaffold 31 on the plurality of layers is provided with corresponding installation gaps 32.
In the embodiment, the working platform 2 is refined, the platform 31 is provided with a plurality of layers of platforms, the platform 31 is provided with an installation gap 32 capable of installing a mold, the mold is assembled in a well through the installation gap 32, a foundation of a ventilation shaft 1 is required to be drilled at the bottommost layer of the shaft bottom in a manner of pouring in the well, and the construction is specifically carried out through the platform 31.
Further, the structure of the ventilating shaft comprises two fourth templates 33 which are the same as the structure of the second template 8, the fourth templates 33 penetrate through the installation gaps 32, a second middle partition plate pouring cavity 34 is formed between the two fourth templates 33, a second shaft pouring cavity 35 is formed by the two fourth templates 33 and the shaft wall of the ventilating shaft 1, and the second middle partition plate pouring cavity 34 is communicated with the second shaft pouring cavity 35.
In this embodiment, two fourth templates 33 are spliced to form a whole second intermediate partition pouring cavity 34 and a second shaft pouring cavity 35 which are communicated with each other, so as to realize integral forming, specifically, an operator performs anchor net supporting on the hanging scaffold 31, assembles a steel structure layer at a specified position, fixes a fourth mold on the steel structure layer after the assembly is completed, and performs pouring treatment after the second intermediate partition pouring cavity 34 and the second shaft pouring cavity 35 which are communicated with each other are formed between the two fourth molds. Compared with the prior art in which the middle partition plate and the shaft are separately poured, the scheme can be used for manufacturing a shaft foundation with a stronger integral structure, and the structural strength of the shaft is further improved.
Further, the plurality of layers of the hanging scaffold 31 are divided into three parts, a first part 36 to a third part 37 are sequentially arranged from top to bottom, the first part 36 is the integral hanging scaffold 31, the first part 36 and the second part 38 are rigidly connected through the upright posts, and the second part 38 and the third part 37 are connected through the flexible connecting pieces.
In this embodiment, in order to make the operation of the operator more convenient, a flexible connecting member is designed, when the operator is at the bottom layer, the flexible connecting member has more degrees of freedom for special situations, so that the hanging scaffold 31 can move according to the idea of the operator, and the work efficiency is further improved.
A construction method of a high-strength integrally cast tunnel ventilation shaft 1 comprises the following steps:
A. 1, prefabricating a ventilation shaft: symmetrically placing a second template 8 and a third template 9 in a template cavity 7 of a first template 6 to form a first shaft pouring cavity 11 and a first middle clapboard pouring cavity 10, arranging a rib structure layer 12 in the first shaft pouring cavity 11 and the first middle clapboard pouring cavity 10, then injecting concrete into the first shaft pouring cavity 11 and the first middle clapboard pouring cavity 10, demoulding after the concrete is cooled, taking out prefabricated ventilation shaft 1 cylinders, and manufacturing the prefabricated ventilation shaft 1 cylinders with required quantity according to the above mode,
B. pouring a bottom ventilation shaft 1 tube: arranging a conveying assembly 3 and a working platform 2 in a ventilation shaft 1, arranging two fourth templates 33 at the bottom of the ventilation shaft 1 through the working platform 2, enabling the two fourth templates 33 to penetrate through an installation gap 32, forming a second middle partition plate pouring cavity 34 between the two fourth templates 33, enabling the two fourth templates 33 and the wall of the ventilation shaft 1 to form a second shaft pouring cavity 35, pouring concrete into the second shaft pouring cavity 35 and the second middle partition plate pouring cavity 34, demoulding and detaching the fourth templates 33 after the concrete is cooled,
C. assembling a prefabricated ventilation shaft 1 cylinder: the prefabricated ventilating shaft 1 barrel is clamped by the plurality of supporting brackets 26 through adjusting the threaded rods 29, the prefabricated ventilating shaft 1 barrel slides to the bottom of the shaft along the rails 25 through the hoisting equipment, the prefabricated ventilating shaft 1 barrel is matched with the ventilating shaft 1 barrel with the cooled bottom, the reserved connecting part 20 of the ventilating shaft 1 barrel at the bottom extends into the first groove 21 of the prefabricated ventilating shaft 1 barrel, a gap is formed between the prefabricated ventilating shaft 1 barrel and the wall of the ventilating shaft 1, concrete is injected into the gap, the prefabricated ventilating shaft 1 barrel is matched with the second groove 23 to form a whole, and the prefabricated ventilating shaft 1 barrel is sequentially arranged until the wellhead of the ventilating shaft 1.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-strength integrally cast tunnel ventilation shaft comprises a working lifting platform (2) arranged in a ventilation shaft (1) in a movable mode and a conveying assembly (3) arranged in the ventilation shaft (1), and is characterized by further comprising a prefabricated mold (5) for a cast prefabricated ventilation shaft (4), wherein the prefabricated mold (5) comprises
A first template (6) which is cylindrical and is provided with a template cavity (7) which is communicated up and down,
a second template (8) arranged in the template cavity (7),
a third template (9) with the same structure as the second template (8), wherein the third template (9) and the second template (8) are symmetrically arranged in the template cavity (7), the second template (8) and the third template (9) form a first middle clapboard casting cavity (10), the first template (6), the second template (8) and the third template (9) jointly form a first shaft casting cavity (11), and the first middle clapboard casting cavity (10) is communicated with the first shaft casting cavity (11),
and the rib structure layer (12) is arranged in the first middle clapboard casting cavity (10) and the first shaft casting cavity (11) and is used for casting a formed concrete layer.
2. A high strength integrally cast tunnel ventilation shaft according to claim 1, wherein the second formwork (8) and the third formwork (9) each comprise
A top plate (13) arranged at the top end of the first template (6),
a bottom plate (14) arranged at the bottom end of the first template (6),
the template cavity is characterized in that arc-shaped plates (15), rib plates (16) and middle plates (17) which are sequentially connected are arranged between the top plate (13) and the bottom plate (14), the inner wall of the template cavity (7) and the two arc-shaped plates (15) which are symmetrically arranged jointly form the first shaft pouring cavity (11), and the two rib plates (16), the two middle plates (17), the two top plates (13) and the two bottom plates (14) which are symmetrically arranged jointly form the first median septum pouring cavity (10).
3. The high-strength integrally cast tunnel ventilation shaft according to claim 2, wherein the top plate (13) and the bottom plate (14) are annular baffles and are provided with inclined surfaces (18) facing the same direction, the top plate (13) is provided with a plurality of through holes (19), the rib structure layer (12) is provided with reserved connecting parts (20), the reserved connecting parts (20) extend out of the through holes (19), the bottom plate (14) is provided with first protrusions (39) matched with the plurality of through holes (19) and used for enabling the bottom surface of the prefabricated ventilation shaft (4) to form first grooves (21), and the reserved connecting parts (20) are used for extending into the first grooves (21) of the adjacent prefabricated ventilation shaft (4).
4. A high strength integrally cast tunnel ventilation shaft according to claim 3, wherein the first form (6) has a plurality of protrusions (22) extending through the form cavity (7) for forming second recesses (23) in the side of the prefabricated ventilation shaft (4).
5. A high strength integrally cast tunnel ventilation shaft according to claim 4, wherein the conveyor assembly (3) comprises
The bases (24) are uniformly arranged on the wall of the ventilation shaft (1) from top to bottom and are arranged in the ventilation shaft (1), the distances between one surfaces of the bases (24) and the center of the ventilation shaft (1) are equal,
a plurality of rails (25) which are respectively and correspondingly arranged on the base (24),
the supporting brackets (26) are arranged on the tracks (25) in a sliding mode, and the supporting brackets (26) are matched to clamp the prefabricated ventilation shaft (4).
6. A high strength integrally cast tunnel ventilation shaft as claimed in claim 5, wherein said support bracket (26) includes
A slider (27) having a third recess (28) cooperating with said rail (25), said slider (27) being slidably arranged on said rail (25) through said third recess (28),
a threaded rod (29) arranged on the slide (27) by means of a threaded connection,
and the bearing plate (30) is arranged on the threaded rod (29) and moves along with the rotation of the threaded rod (29).
7. A high strength integrally cast tunnel ventilation shaft as claimed in claim 6, wherein the working platform (2) comprises
The hanging scaffold (31) is provided with a plurality of layers and movably arranged in the ventilation shaft (1), and the hanging scaffold (31) on the plurality of layers is provided with corresponding installation gaps (32).
8. The high-strength integrally cast tunnel ventilation shaft according to claim 7, further comprising two fourth templates (33) having the same structure as the second template (8), wherein the fourth templates (33) penetrate through the installation gap (32), a second middle partition casting cavity (34) is formed between the two fourth templates (33), the two fourth templates (33) and the shaft wall of the ventilation shaft (1) form a second shaft casting cavity (35), and the second middle partition casting cavity (34) is communicated with the second shaft casting cavity (35).
9. A high strength integrally cast tunnel ventilation shaft according to claim 8, wherein the plurality of layers of said platform (31) are divided into three sections, the first section (36) to the third section (37) are arranged from top to bottom, the first section (36) is an integral platform, the first section (36) and the second section (38) are rigidly connected by a column, and the second section (38) and the third section (37) are connected by a flexible connector.
10. A method of constructing a high strength integrally cast tunnel ventilation shaft using the high strength integrally cast tunnel ventilation shaft of claim 9, comprising the steps of:
A. prefabricating a ventilated shaft: symmetrically placing the second template (8) and the third template (9) in the template cavity (7) of the first template (6) to form a first shaft pouring cavity (11) and a first middle clapboard pouring cavity (10), pouring concrete into the first shaft pouring cavity (11) and the first middle clapboard pouring cavity (10) after the rib structure layer (12) is arranged in the first shaft pouring cavity (11) and the first middle clapboard pouring cavity (10), demoulding after the concrete is cooled, taking out the prefabricated ventilation shaft (4), and manufacturing the prefabricated ventilation shaft (4) with required quantity according to the above mode,
B. pouring a bottom layer ventilation shaft: arranging the conveying assembly (3) and the working platform (2) in the ventilation shaft (1), arranging two fourth templates (33) at the bottom of the ventilation shaft (1) through the working platform (2), enabling the two fourth templates (33) to penetrate through the installation gap (32), forming a second middle partition plate pouring cavity (34) between the two fourth templates (33), enabling the two fourth templates (33) and the wall of the ventilation shaft (1) to form the second shaft pouring cavity (35), pouring concrete into the second shaft pouring cavity (35) and the second middle partition plate pouring cavity (34), and demolding and detaching the fourth templates (33) after the concrete is cooled,
C. assembling the prefabricated ventilation shaft: through the adjustment threaded rod (29), make a plurality of support bracket (26) press from both sides tightly prefabricated ventilation pit shaft (4), through hoisting equipment, will prefabricated ventilation pit shaft (4) are followed track (25) slide to the shaft bottom, prefabricated ventilation pit shaft (4) and bottom cooling's ventilation pit shaft cooperation, the ventilation pit shaft of bottom reserve connecting portion (20) and stretch into prefabricated ventilation pit shaft (4) in first recess (21), prefabricated ventilation pit shaft (4) with the wall of a well formation clearance of ventilation shaft (1), pour into the concrete into the clearance, the cooperation second recess (23) forms wholly, sets gradually according to above mode prefabricated ventilation pit shaft (4) until ventilation shaft (1) well head.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291036A (en) * | 1999-04-08 | 2000-10-17 | Kumagai Gumi Co Ltd | Precast shaft |
| CN101906972A (en) * | 2010-07-23 | 2010-12-08 | 中铁十七局集团第四工程有限公司 | Method for synchronously constructing second shaft wall lining and intermediate baffle of vertical shaft |
| CN103088844A (en) * | 2013-03-04 | 2013-05-08 | 济南城建集团有限公司 | Reinforced concrete inspection well whole prefabricated hoisting construction method |
| CN207582502U (en) * | 2017-06-09 | 2018-07-06 | 西安市恒兴市政工程公司 | A kind of prefabricated assembled circular well |
| CN108825245A (en) * | 2018-08-27 | 2018-11-16 | 中煤第建设有限公司第四十九工程处 | Tunnel ventilation vertical shaft constructing device and construction method |
| CN208981359U (en) * | 2018-09-30 | 2019-06-14 | 广东中林建筑园林工程有限公司 | The gang form structure of the inspection shaft cast-in-place construction of town road pipeline |
| CN211948566U (en) * | 2019-12-31 | 2020-11-17 | 洛阳中天绿色构件有限公司 | Prefabricated pit shaft for municipal administration pipeline inspection well |
-
2021
- 2021-11-10 CN CN202111323915.2A patent/CN114046171B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000291036A (en) * | 1999-04-08 | 2000-10-17 | Kumagai Gumi Co Ltd | Precast shaft |
| CN101906972A (en) * | 2010-07-23 | 2010-12-08 | 中铁十七局集团第四工程有限公司 | Method for synchronously constructing second shaft wall lining and intermediate baffle of vertical shaft |
| CN103088844A (en) * | 2013-03-04 | 2013-05-08 | 济南城建集团有限公司 | Reinforced concrete inspection well whole prefabricated hoisting construction method |
| CN207582502U (en) * | 2017-06-09 | 2018-07-06 | 西安市恒兴市政工程公司 | A kind of prefabricated assembled circular well |
| CN108825245A (en) * | 2018-08-27 | 2018-11-16 | 中煤第建设有限公司第四十九工程处 | Tunnel ventilation vertical shaft constructing device and construction method |
| CN208981359U (en) * | 2018-09-30 | 2019-06-14 | 广东中林建筑园林工程有限公司 | The gang form structure of the inspection shaft cast-in-place construction of town road pipeline |
| CN211948566U (en) * | 2019-12-31 | 2020-11-17 | 洛阳中天绿色构件有限公司 | Prefabricated pit shaft for municipal administration pipeline inspection well |
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| CN114046171B (en) | 2022-08-05 |
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