CN110486018B - Lattice type composite shaft structure and construction method - Google Patents

Lattice type composite shaft structure and construction method Download PDF

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Publication number
CN110486018B
CN110486018B CN201910750374.8A CN201910750374A CN110486018B CN 110486018 B CN110486018 B CN 110486018B CN 201910750374 A CN201910750374 A CN 201910750374A CN 110486018 B CN110486018 B CN 110486018B
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steel
shaft
lattice
concrete layer
beams
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CN110486018A (en
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张程华
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Xian University of Science and Technology
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Xian University of Science and Technology
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Priority to GB1917229.5A priority patent/GB2590076B/en
Priority to PCT/CN2019/103527 priority patent/WO2021026971A1/en
Publication of CN110486018A publication Critical patent/CN110486018A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D5/00Lining shafts; Linings therefor
    • E21D5/11Lining shafts; Linings therefor with combinations of different materials, e.g. wood, metal, concrete
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D5/00Lining shafts; Linings therefor
    • E21D5/12Accessories for making shaft linings, e.g. suspended cradles, shutterings

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Wood Science & Technology (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Piles And Underground Anchors (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention provides a lattice type composite shaft structure and a construction method, which relate to the coal mining technology and comprise an outer shaft and an inner shaft, wherein the inner shaft is arranged in the outer shaft, and the outer wall of the inner shaft is connected with the inner wall of the outer shaft into a whole through concrete; outside pit shaft comprises two first section of thick bamboo walls and two second section of thick bamboo walls that encircle and mutual interval set up in proper order, first section of thick bamboo wall includes first steel-concrete layer and sets up the heated board at first steel-concrete layer outer wall, second section of thick bamboo wall includes second steel-concrete layer and sets up the heated board at second steel-concrete layer outer wall, first steel-concrete layer and second steel-concrete layer all include shaped steel skeleton and the concrete of pouring around shaped steel skeleton, the inside both ends on first steel-concrete layer inwards shrink and form a spacing groove, the inside both ends on second steel-concrete layer outwards extend form one with spacing groove complex stopper. The structure can improve the defects of the existing structure, effectively defend the damage caused by earthquake action, and enhance the shockproof and disaster reduction capability of the coal mine shaft in China.

Description

Lattice type composite shaft structure and construction method
Technical Field
The invention relates to a coal mining technology, in particular to a lattice type composite shaft structure and a construction method.
Background
With the rapid development of economic construction in China, the energy demand is greater and greater, the problem of energy shortage is more and more serious, and new energy needs to comprehensively replace the traditional energy and needs to be on a day-to-day basis. In terms of the composition of energy at the present stage of China, coal energy still occupies a main position. Therefore, newly building a batch of large coal mines is an urgent task at present.
However, with the exhaustion of shallow coal resources and the deep excavation, the construction of new mines in deep and superficial soil layers is an important problem to be solved urgently for the coal mine construction. Along with the increase of surface soil thickness, the problem that the design of the well wall is difficult to solve appears, no matter the design of the outer well wall or the inner well wall, the too big or too high concrete intensity grade of well wall thickness will appear in the design of considering frost heaving pressure and full water pressure. Meanwhile, the existing shaft engineering support basically adopts reinforced concrete as a shaft wall material, the construction is generally carried out by binding a reinforcing mesh, supporting a formwork and pouring concrete, the problems of large quantity of reinforcing mesh binding work in a construction site and large quantity of supporting formwork and pouring concrete work exist, and in the traditional shaft wall construction process, the initial strength of the shaft wall after the shaft wall is poured is weak, the strength cannot meet the design requirement, cracks are easily generated under the repeated action of explosive load, the actual strength of the shaft wall is reduced, and the engineering quality hidden danger is caused.
Accordingly, the present application provides a lattice composite wellbore structure and method of construction.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a lattice type composite shaft structure.
In order to achieve the above purpose, the invention provides the following technical scheme:
the lattice type composite shaft structure comprises a plurality of outer shaft bodies and a plurality of inner shaft bodies, wherein the outer shaft bodies are connected in sequence from top to bottom, the outer shaft bodies are arranged in an excavated shaft hole, the outer walls of the outer shaft bodies are abutted against the shaft hole, the inner shaft bodies are arranged in the outer shaft bodies, and the outer walls of the inner shaft bodies and the inner walls of the outer shaft bodies are connected into a whole through concrete;
the outer side shaft is composed of at least two first shaft walls and two second shaft walls, and the first shaft walls and the second shaft walls are arranged at intervals;
the first cylinder wall comprises a first reinforced concrete layer and an insulation board arranged on the outer wall of the first reinforced concrete layer, the second cylinder wall comprises a second reinforced concrete layer and an insulation board arranged on the outer wall of the second reinforced concrete layer, the first reinforced concrete layer and the second reinforced concrete layer both comprise a steel skeleton and concrete poured around the steel skeleton, two ends of the interior of the first reinforced concrete layer contract inwards to form a limiting groove, two ends of the interior of the second reinforced concrete layer extend outwards to form a limiting block matched with the limiting groove, the two first cylinder walls and the two second cylinder walls are sequentially arranged in a surrounding manner and are spaced from each other, and the limiting block is clamped with the limiting groove;
the support strength of the outer side mineshafts is sequentially enhanced from top to bottom.
Preferably, shaped steel skeleton includes from the top down a plurality of curved steel type lattice roof beam that evenly set up and sets up perpendicularly a plurality of steel type lattice columns of steel type lattice column both sides, steel type lattice column and steel type lattice roof beam pass through the reinforcement.
Preferably, at least 4 steel lattice columns at the bottom of each outer side shaft extend outwards to form a plugging end, a plugging hole matched with the plugging end is reserved at the top of each outer side shaft, and the two adjacent outer side shafts are connected through the plugging ends and the plugging holes.
Preferably, at least 4 steel type lattice columns at the top and the bottom of each outer side shaft extend outwards to form a plug end, the top and the bottom of each outer side shaft further comprise a plurality of crown beams, the top surface and the bottom surface of each crown beam are provided with at least four mounting holes matched with the plug ends, one crown beam is arranged between every two adjacent outer side shafts, and every two adjacent outer side shafts are connected with the crown beams through the plug ends and the mounting holes.
Preferably, the cross section of the steel type lattice column and the cross section of the steel type lattice beam of the lower outer shaft are respectively larger than the cross section of the steel type lattice column and the cross section of the steel type lattice beam of the upper outer shaft.
Preferably, the distance between the steel lattice columns of the lower outer shaft and the distance between the steel lattice beams are respectively smaller than the distance between the steel lattice columns of the upper outer shaft and the distance between the steel lattice beams.
Preferably, the inner side shaft comprises an inner cylinder steel reinforcement framework, and inner layer concrete is poured around the inner cylinder steel reinforcement framework.
Preferably, the outer wall of the heat-insulation plate is provided with a waterproof roll layer, and a graphite material is coated outside the waterproof roll layer.
Another object of the present invention is to provide a method for constructing a lattice type composite shaft, comprising the steps of:
prefabricating the outer well bore on a non-construction site:
step 1: binding the steel type lattice columns and the steel type lattice beams to form a steel skeleton;
step 2: laying an insulation board and erecting a template to form a pouring cavity;
and step 3: placing the profile steel framework into a pouring cavity, and pouring concrete;
and 4, step 4: arranging a waterproof roll layer on the outer layer of the heat insulation plate, and smearing a graphite material on the outer layer of the waterproof roll layer;
hoisting the outer side shaft on the construction site:
and 5: hoisting the outer side mineshafts into the holes of the excavated mines from large to small according to the diameters of the steel type lattice columns and the steel type lattice beams or from small to large according to the distance between the steel type lattice columns of the outer side mineshafts and the distance between the steel type lattice beams; or one crown beam is hoisted between two adjacent outer side well shafts up and down;
casting the inner side shaft in a construction site:
step 6: binding the inner cylinder steel bars to form an inner cylinder steel bar framework;
and 7: and (4) supporting a formwork and pouring concrete to the inner cylinder steel reinforcement framework in a segmented manner from bottom to top.
Preferably, a plurality of crown beams are further included, and in the step 5, a plurality of the outer well bores and the crown beams are sequentially hoisted to the well in the mine cave at intervals.
The lattice type composite shaft structure and the construction method provided by the invention have the following beneficial effects:
(1) the outer side shafts are multiple, the outer side shafts are sequentially connected from top to bottom, the supporting strength of the outer side shafts is sequentially enhanced from top to bottom, the supporting strength of the shafts is set according to the depth of a mine, the problem that the wall thickness of a well is too large or the concrete strength grade is too high is solved, the engineering optimization idea is realized, and the great waste caused by the fact that the section and reinforcing bars of the traditional shafts are completely the same from top to bottom is avoided;
(2) the supporting strength of the outer side mineshafts is sequentially enhanced from top to bottom, and members with different mechanical properties are respectively used for expected damage parts and unexpected damage parts, so that multi-channel seismic fortification and functional differentiation of the structure are realized, the damage caused by the earthquake action is effectively prevented, and the seismic resistance and disaster reduction capability of the mineshafts of the coal mine in China are enhanced;
(3) the method has the advantages that the steps of binding the profile steel framework of the outer side shaft, supporting the formwork, pouring concrete and the like are carried out on a non-construction site, the problems of large engineering quantity of a mine construction site, large supporting formwork and large concrete pouring engineering quantity are solved, the building strength is high, the control is easy, the problems that cracks are easily generated under the repeated action of explosive loads and the actual strength of the well wall in the traditional well wall construction process are reduced, and the engineering quality hidden danger is greatly reduced.
Drawings
FIG. 1 is a top view of a first cartridge wall;
FIG. 2 is a top view of the second cartridge wall;
FIG. 3 is a top view of the outer wellbore;
FIG. 4 is a plan view of the steel skeleton;
FIG. 5 is a schematic view of the structure of an outer wellbore in accordance with example 1 of the present invention;
FIG. 6 is a schematic representation of a lattice composite wellbore structure of example 1 of the present invention;
FIG. 7 is a schematic diagram of the structure of an outer wellbore in accordance with example 2 of the present invention;
fig. 8 is a schematic structural view of a crown beam of embodiment 2 of the present invention;
figure 9 is a schematic representation of a lattice composite wellbore structure of example 2 of the present invention.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
The invention provides a lattice type composite shaft structure, which particularly comprises a plurality of outer shaft bodies and inner shaft bodies 1 as shown in figures 1 to 6, wherein the outer shaft bodies are connected in sequence from top to bottom, the outer shaft bodies are arranged in an excavated hole, the outer walls of the outer shaft bodies are abutted against the hole, the inner shaft bodies 1 are arranged in the outer shaft bodies, and the outer walls of the inner shaft bodies and the inner walls of the outer shaft bodies are connected into a whole through concrete; in the embodiment, the outer side shaft is prefabricated in a non-construction site, the prefabricated outer side shaft is directly pulled to a construction site for hoisting, and the inner side shaft 1 is directly constructed after the outer side of the outer side shaft of the construction site is hoisted.
Specifically, the outer side shaft is composed of at least two first cylinder walls 3 and two second cylinder walls 4, and the first cylinder walls 3 and the second cylinder walls 4 are arranged at intervals; the outer side shaft is divided into four parts, so that hoisting in the later period is facilitated.
As shown in fig. 1 to 3, in this embodiment, two first cylinder walls 3 and two second cylinder walls 4 are provided, each first cylinder wall 3 includes a first reinforced concrete layer and a heat insulation board 5 disposed on an outer wall of the first reinforced concrete layer, each second cylinder wall 4 includes a second reinforced concrete layer and a heat insulation board 5 disposed on an outer wall of the second reinforced concrete layer, each of the first reinforced concrete layer and the second reinforced concrete layer includes a steel skeleton and concrete 6 poured around the steel skeleton, two ends of the inside of the first reinforced concrete layer contract inwards to form a limiting groove 7, two ends of the inside of the second reinforced concrete layer extend outwards to form a limiting block 8 matched with the limiting groove 7, the two first cylinder walls 3 and the two second cylinder walls 4 are sequentially arranged around and spaced from each other, and the limiting block 8 is clamped with the limiting groove 7; the plurality of outer wellbores sequentially increase in support strength from top to bottom. The limiting grooves 7 and the limiting blocks 8 which are clamped with each other are arranged, so that the adjacent first cylinder wall 3 and the second cylinder wall 4 are restricted with each other and are not easy to move, and the installation efficiency is ensured on the premise of increasing the installation strength; meanwhile, the supporting strength of the outside shafts is sequentially enhanced from top to bottom, the supporting strength of the shafts is set according to the depth of a mine, the problem that the wall thickness of the well is too large or the concrete strength grade is too high is solved, the idea of engineering optimization is realized, and the problem that the cross section and the reinforcing bars of the traditional shaft are completely the same from top to bottom to cause great waste is avoided.
Further, as shown in fig. 4, in the present embodiment, the steel skeleton includes a plurality of arc-shaped steel lattice beams 11 uniformly arranged from top to bottom and a plurality of steel lattice columns 12 vertically arranged at both sides of the steel lattice column 12, and the steel lattice columns 12 and the steel lattice beams 11 are bound by the reinforcing steel bars 13.
In order to improve the stability, as shown in fig. 5, in this embodiment, at least 4 steel lattice columns 12 at the bottom of each outer shaft extend outward to form a plugging end 14, a plugging hole 15 matched with the plugging end 14 is reserved at the top of each outer shaft, and two adjacent outer shafts are connected through the plugging end 14 and the plugging hole 15.
Specifically, in order to avoid the problem of great waste caused by the fact that the section and the reinforcing bars of the traditional shaft are completely the same from top to bottom, in this embodiment, the cross section of the steel lattice column 12 and the cross section of the steel lattice beam 11 of the lower outer shaft are respectively larger than the cross section of the steel lattice column 12 and the cross section of the steel lattice beam 11 of the upper outer shaft, and as the ground pressure decreases, the steel lattice column 12 and the steel lattice beam 11 are degraded into the steel keel.
Or the problem of great waste caused by the fact that the cross section and the reinforcing bars of the traditional shaft are completely the same from top to bottom is solved through another mode, namely the distance between the steel type lattice columns 12 of the shaft on the outer side below and the distance between the steel type lattice beams 11 are respectively smaller than the distance between the steel type lattice columns 12 of the shaft on the outer side above and the distance between the steel type lattice beams 11, namely the installation density of the steel type lattice columns 12 and the steel type lattice beams 11 is changed from bottom to top. Through the difference of the cross sections or the intervals of the steel type lattice columns 12 and the steel type lattice beams 11, the idea of engineering optimization is realized, the strength of a shaft is improved, materials are saved, members with different mechanical properties are respectively used for expected damaged parts and unexpected damaged parts, the multi-channel earthquake-proof fortification and functional differentiation of the structure are realized, the damage caused by earthquake action is effectively prevented, and the earthquake-proof and disaster-reducing capacity of the shaft of a coal mine in China is enhanced.
In this embodiment, the inner wellbore 1 includes an inner tube steel reinforcement cage, and inner layer concrete is poured around the inner tube steel reinforcement cage. The inner cylinder steel reinforcement framework is a common steel reinforcement keel, the strength requirement of the inner side shaft 1 is low, and the construction is completed by binding the inner cylinder steel reinforcement framework on site and pouring concrete.
In order to improve the performance of the shaft structure, in this embodiment, the outer wall of the heat insulation board 5 is provided with a waterproof roll layer 9, and the waterproof roll layer 9 is externally coated with a graphite material 10. This embodiment will keep warm, waterproof one shot forming improves pit shaft life, effectively solves the pit shaft seepage problem, and smooth graphite class material is applied paint with a brush to waterproof roll-up 9 outsides, reduces the pit shaft later stage and subsides the deformation.
In a construction site, a plurality of outer side well bores are hoisted as required, and as shown in fig. 6, the structure of two outer side well bores is schematically shown after installation.
The embodiment also provides a construction method of the lattice type composite shaft structure, which specifically comprises the following steps:
prefabricating an outer side shaft on a non-construction site:
step 1: binding the steel lattice columns 12 and the steel lattice beams 11 to form a steel section framework;
step 2: laying an insulation board 5 and erecting a template to form a pouring cavity;
and step 3: placing the profile steel framework into a pouring cavity, and pouring concrete 6;
and 4, step 4: a waterproof roll layer 9 is arranged on the outer layer of the heat insulation plate 5, and a graphite material 10 is coated on the outer layer of the waterproof roll layer 9;
hoisting the outer shaft on the construction site:
and 5: hoisting a plurality of outer side mineshafts into the holes of the excavated mines from large to small according to the diameters of the steel type lattice columns 12 and the steel type lattice beams 11 or from small to large according to the distance between the steel type lattice columns 12 of the outer side mineshafts and the distance between the steel type lattice beams 11;
casting the inner side shaft 1 in the construction site:
step 6: binding the inner cylinder steel bars to form an inner cylinder steel bar framework;
and 7: and (5) supporting the formwork and pouring concrete 6 to the reinforcement cage of the inner cylinder in a segmented manner from bottom to top.
Example 2
As shown in fig. 7 to 9, in order to reduce the difficulty of hoisting, in this embodiment, at least 4 steel lattice columns 12 at the top and bottom of each outer wellbore extend outward to form a splicing end 14, and the embodiment further includes a plurality of crown beams 16, at least four mounting holes 17 matched with the splicing end 14 are respectively formed in the top surface and the bottom surface of each crown beam 16, one crown beam 16 is arranged between two adjacent upper and lower outer wellbores, two adjacent upper and lower outer wellbores are connected with the crown beams 16 through the splicing ends 14 and the mounting holes 17, and the rest of the structure is the same as that of embodiment 1, which is not described herein again. The height of the crown beam 16 is lower than that of the outside shaft, the inserting end 14 and the installing hole 17 are easily, quickly and accurately positioned and inserted into each other in the hoisting process, the hoisting efficiency is improved, and meanwhile, the crown beam 16 plays a transition role, so that the supporting strength and the stability are further improved. In a construction site, a plurality of outer side well bores and the crown beam 16 are hoisted at intervals according to needs, and as shown in fig. 9, the structure of the two outer side well bores is schematically shown after installation.
The construction method of the lattice type composite shaft structure comprises the following specific steps:
prefabricating an outer side shaft on a non-construction site:
step 1: binding the steel lattice columns 12 and the steel lattice beams 11 to form a steel section framework;
step 2: laying an insulation board 5 and erecting a template to form a pouring cavity;
and step 3: placing the profile steel framework into a pouring cavity, and pouring concrete;
and 4, step 4: a waterproof roll layer 9 is arranged on the outer layer of the heat insulation plate 5, and a graphite material 10 is coated on the outer layer of the waterproof roll layer 9;
hoisting the outer shaft on the construction site:
and 5: and hoisting a plurality of outer side mineshafts and crown beams 16 into the holes of the excavated mine at intervals in sequence from large to small according to the diameters of the steel type lattice columns 12 and the steel type lattice beams 11 or according to the distance between the steel type lattice columns 12 of the outer mineshafts and the distance between the steel type lattice beams 11 from small to large.
Casting an inner side shaft in a construction site:
step 6: binding inner cylinder steel bars;
and 7: and (5) supporting a formwork and pouring concrete.
In this embodiment, the casting of the inner well bore is a sectional casting from bottom to top.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims (9)

1. A lattice type composite shaft structure is characterized by comprising a plurality of outer shaft bodies and a plurality of inner shaft bodies (1), wherein the outer shaft bodies are connected in sequence from top to bottom, the outer shaft bodies are arranged in an excavated well hole, the outer walls of the outer shaft bodies are abutted against the well hole, the inner shaft bodies (1) are arranged in the outer shaft bodies, and the outer walls of the inner shaft bodies and the inner walls of the outer shaft bodies are connected into a whole through concrete;
the outer side shaft is composed of at least two first cylinder walls (3) and two second cylinder walls (4), and the first cylinder walls (3) and the second cylinder walls (4) are arranged at intervals;
the first cylinder wall (3) comprises a first reinforced concrete layer and a heat insulation board (5) arranged on the outer wall of the first reinforced concrete layer, the second cylinder wall (4) comprises a second reinforced concrete layer and a heat insulation board (5) arranged on the outer wall of the second reinforced concrete layer, the first reinforced concrete layer and the second reinforced concrete layer both comprise a steel skeleton and concrete (6) poured around the steel skeleton, two ends of the interior of the first reinforced concrete layer contract inwards to form a limiting groove (7), two ends of the interior of the second reinforced concrete layer extend outwards to form a limiting block (8) matched with the limiting groove (7), the two first cylinder walls (3) and the two second cylinder walls (4) are sequentially arranged in a surrounding manner and spaced manner, and the limiting block (8) is clamped with the limiting groove (7);
the support strength of the outer side mineshafts is sequentially enhanced from top to bottom.
2. A lattice composite shaft structure according to claim 1, characterized in that the steel skeleton comprises a plurality of curved steel lattice beams (11) arranged evenly from top to bottom and a plurality of steel lattice columns (12) arranged vertically on both sides of the steel lattice beams (11), the steel lattice columns (12) and the steel lattice beams (11) being tied by means of steel reinforcement bars (13).
3. The lattice composite shaft structure as claimed in claim 2, wherein at least 4 steel lattice columns (12) at the bottom of each outer shaft extend outwards to form a plugging end (14), a plugging hole (15) matched with the plugging end (14) is reserved at the top of each outer shaft, and two adjacent outer shafts are connected through the plugging ends (14) and the plugging holes (15).
4. The lattice composite shaft structure according to claim 3, characterized in that at least 4 steel lattice columns (12) at the top and bottom of each outer shaft extend outwards to form a plug end (14), and the structure further comprises a plurality of crown beams (16), the top and bottom surfaces of each crown beam (16) are provided with at least four mounting holes (17) matched with the plug end (14), one crown beam (16) is arranged between two adjacent outer shafts, and two adjacent outer shafts are connected with the crown beams (16) through the plug ends (14) and the mounting holes (17).
5. A lattice composite wellbore structure according to claim 4, characterized in that the cross-section of the steel lattice columns (12) and the cross-section of the steel lattice beams (11) of the lower outer wellbore are larger than the cross-section of the steel lattice columns (12) and the cross-section of the steel lattice beams (11) of the upper outer wellbore, respectively.
6. A lattice composite shaft structure according to claim 4, characterized in that the spacing between the steel lattice columns (12) and the spacing between the steel lattice beams (11) of the lower outer shaft are smaller than the spacing between the steel lattice columns (12) and the spacing between the steel lattice beams (11) of the upper outer shaft, respectively.
7. The lattice composite shaft structure according to claim 4, characterized in that the inner shaft (1) comprises an inner cylinder steel reinforcement cage around which an inner layer of concrete is cast.
8. The lattice composite shaft structure according to claim 4, characterized in that the insulation board (5) is provided with a waterproof roll layer (9) on the outer wall, and the waterproof roll layer (9) is coated with a graphite-like material (10).
9. A method of constructing a lattice composite wellbore structure according to any one of claims 1 to 8, comprising the steps of:
prefabricating the outer well bore on a non-construction site:
step 1: binding the steel lattice columns (12) and the steel lattice beams (11) to form a steel section framework;
step 2: laying an insulation board (5) and erecting a template to form a pouring cavity;
and step 3: placing the section steel framework into a pouring cavity, and pouring concrete (6);
and 4, step 4: arranging a waterproof roll layer (9) on the outer layer of the heat insulation plate (5), and smearing a graphite material (10) on the outer layer of the waterproof roll layer (9);
hoisting the outer side shaft on the construction site:
and 5: hoisting the outer side mineshafts into the holes of the excavated mines from small to large according to the diameters of the steel type lattice columns (12) and the steel type lattice beams (11) or according to the distance between the steel type lattice columns (12) of the outer side mineshafts and the distance between the steel type lattice beams (11); or hoisting one crown beam (16) between two adjacent outer side well bores up and down;
casting the inner shaft (1) in a construction site:
step 6: binding the inner cylinder steel bars to form an inner cylinder steel bar framework;
and 7: and (3) supporting the formwork and pouring concrete (6) to the inner cylinder steel reinforcement framework in a segmented manner from bottom to top.
CN201910750374.8A 2019-08-14 2019-08-14 Lattice type composite shaft structure and construction method Active CN110486018B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201910750374.8A CN110486018B (en) 2019-08-14 2019-08-14 Lattice type composite shaft structure and construction method
GB1917229.5A GB2590076B (en) 2019-08-14 2019-08-30 Lattice composite shafts structure and construction method therefor
PCT/CN2019/103527 WO2021026971A1 (en) 2019-08-14 2019-08-30 Lattice composite wellbore structure and construction method therefor

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Application Number Priority Date Filing Date Title
CN201910750374.8A CN110486018B (en) 2019-08-14 2019-08-14 Lattice type composite shaft structure and construction method

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CN110486018B true CN110486018B (en) 2020-07-31

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