CN111648795A - Underground chamber supporting structure and underground chamber - Google Patents
Underground chamber supporting structure and underground chamber Download PDFInfo
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- CN111648795A CN111648795A CN202010494648.4A CN202010494648A CN111648795A CN 111648795 A CN111648795 A CN 111648795A CN 202010494648 A CN202010494648 A CN 202010494648A CN 111648795 A CN111648795 A CN 111648795A
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- chamber
- reinforced concrete
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- side wall
- arch
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- 230000008093 supporting effect Effects 0.000 title claims abstract description 29
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 62
- 239000011378 shotcrete Substances 0.000 claims abstract description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 34
- 239000011435 rock Substances 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 12
- 238000005553 drilling Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 4
- 230000002787 reinforcement Effects 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000035882 stress Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000668854 Howardia biclavis Species 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- -1 mudstone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/006—Lining anchored in the rock
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/183—Supporting means for arch members, not provided for in E21D11/22
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention provides a chamber supporting structure and a chamber, comprising: reinforced concrete and a reinforced concrete arch frame arranged outside the chamber; the reinforced concrete arch center comprises an arch beam arranged outside the top end of the chamber, upright columns arranged at two ends of the bottom of the arch beam and a foundation part arranged at the bottoms of the upright columns; the upright post is arranged on the outer side wall of the chamber; the arched beams and the upright posts form an integrated structure with the top end of the chamber and the side wall of the chamber by pouring reinforced concrete. By utilizing the method, the problem that the conventional combined support mode of the shotcrete net, the anchor cable and the reinforced concrete is poor in support effect in a thick and large soft rock stratum, the anchor cable needs to be subjected to a drawing test, and the construction cost of the anchor cable is high can be solved; equipment for drilling and erecting anchor cables needs a larger construction space; the side walls of the middle lower part of the chamber are supported less; the sealing difficulty is high, the construction quality is not controlled well, and the like.
Description
Technical Field
The invention relates to the technical field of mine engineering support, in particular to a chamber support structure and a chamber.
Background
Along with the continuous deepening of the mining depth of mines in China, the influence of the three-high one disturbance on the surrounding rock of the deep tunnel is more and more obvious; meanwhile, as the mining scale is continuously enlarged, the excavation section of the underground chamber is larger and larger. The excavation and support of the deep large-section underground chamber are dynamic construction processes which change along with time and space, the stress of surrounding rock of the underground chamber presents nonlinear characteristics, the stress concentration is obvious, and the damage range of the surrounding rock is large. The large-section chamber is usually served for the whole mine, the service life is long, the function is important, the chamber stability is one of the main factors restricting the high-efficiency and safe production of the mine, and therefore the underground large-section chamber support is one of the key points for ensuring the safe production of the mine. Therefore, when the site of the mine engineering is selected, the position with better rock stratum condition is generally selected to arrange the large-section chamber.
From the existing large-section chamber support design, most of combined supports contain anchor rope supports, and the support effect is good. When the rock stratum is better, a combined supporting mode of a jet anchor net, an anchor cable or an anchor cable and concrete is adopted; when the rock stratum condition is poor, adopting a combined supporting mode of a jet anchor net, an anchor cable and reinforced concrete; the anchor cable plays a great role in the supporting mode. However, due to the influence of the arrangement of the mine engineering system, some large-section chambers can only be excavated in thick and large soft rocks (such as mudstone, coal beds and sandstone, and the conditions of the rock formations which are easily weathered or become soft when meeting water), and the anchor cable supporting effect is not ideal under the conditions.
For the large-section underground chamber, a supporting mode of a spray anchor net, an anchor rope and reinforced concrete is adopted, and the large-section underground chamber has the following defects:
1. the anchor cable needs to be subjected to a drawing test, so that the cost for constructing the anchor cable is high;
2. equipment for drilling and erecting anchor cables needs a larger construction space;
3. anchor cable support areas are generally chamber arch parts and the upper parts of the side walls, and the middle-lower side walls are supported less;
4. the anchor cable of the arch part of the construction chamber is difficult to control, especially the anchor cable mortar anchoring time is long, the sealing difficulty of the opening is large, and the construction quality is difficult to control;
5. the supporting effect of the anchor cable in the thick and large soft rock stratum can not be ensured, and the condition of poor effect or even failure occurs.
Disclosure of Invention
In view of the above problems, the invention aims to provide a chamber supporting structure and a chamber, so as to solve the problems that the existing combined supporting mode of a shotcrete net, an anchor cable and reinforced concrete is poor in supporting effect in a thick and large soft rock stratum, the anchor cable needs to be subjected to a drawing test, and the cost of constructing the anchor cable is high; equipment for drilling and erecting anchor cables needs a larger construction space; the side walls of the middle lower part of the chamber are supported less; the sealing difficulty is high, the construction quality is not controlled well, and the like.
The invention provides a supporting structure of an underground chamber, which comprises reinforced concrete and a reinforced concrete arch center arranged outside the underground chamber; the reinforced concrete arch center comprises an arch beam arranged outside the top end of the chamber, upright columns arranged at two ends of the bottom of the arch beam and a base part arranged at the bottoms of the upright columns; the upright posts are arranged on the outer side wall of the chamber; the arched girders and the upright posts form an integrated structure with the top end of the chamber and the side wall of the chamber through the pouring of the reinforced concrete.
In addition, the preferable scheme is that the reinforced concrete arch center further comprises a spray anchor net arranged outside the reinforced concrete arch center.
In addition, it is preferable that the shape of the arched girder is the same as the shape of the ceiling of the chamber.
In addition, the preferred scheme is that the arched beam is formed by bundling at least two beam reinforcing steel bars through beam reinforcing steel bars; and/or the upright post is formed by bundling at least two post reinforcing steel bars through post reinforcing steel bars.
In addition, the preferable scheme is that the arched beam is connected with the top end of the chamber in a lap joint mode through the beam reinforcing bars; the upright posts are connected with the side wall of the chamber through the post reinforcing bars in a lap joint mode.
In addition, preferably, the arched girders and the upright posts form an integrated structure with the inner side of the top end of the chamber and the side wall of the chamber through pouring of the reinforced concrete on the inner side of the top end of the chamber and the inner side wall of the chamber.
In addition, it is preferable that the arched girder is lap-jointed to the pillar.
Further, it is preferable that the foundation portion includes a foundation bed and a pillar fixing structure provided on a top of the foundation bed.
The invention provides an underground chamber, which comprises an underground chamber main body and an underground chamber bottom plate arranged at the bottom of the underground chamber main body; the lateral wall and the top end of the chamber main body are provided with the chamber supporting structure.
In addition, it is preferable that the foundation portion is provided on the chamber floor.
According to the technical scheme, the chamber supporting structure and the chamber provided by the invention are characterized in that a reinforced concrete arch center is arranged outside the chamber through reinforced concrete; the reinforced concrete arch center comprises an arch beam arranged outside the top end of the chamber, upright posts arranged at two ends of the bottom of the arch beam and a foundation part arranged at the bottoms of the upright posts; the upright post is arranged on the outer side wall of the chamber; the arched beams and the upright posts form an integrated structure with the top end of the chamber and the side wall of the chamber by pouring reinforced concrete. The construction can be synchronously poured with the chamber wall, and the support structure has good integrity; in the process of supporting, no large-scale mechanical operation exists; the reinforced concrete arch frame reinforces the top and the side wall of the chamber, so that the stability of the whole chamber can be ensured; the method has the advantages of small construction space, small construction difficulty, good control of construction quality, contribution to the stabilization of the whole surrounding rock and the excavation of the underground chamber, low cost and the like.
To the accomplishment of the foregoing and related ends, one or more aspects of the invention comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the invention. These aspects are indicative, however, of but a few of the various ways in which the principles of the invention may be employed. Further, the present invention is intended to include all such aspects and their equivalents.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of a chamber supporting structure according to an embodiment of the present invention;
FIG. 2 is a schematic view of section II-II of FIG. 1;
fig. 3 is a schematic view of section III-III of fig. 1.
In the attached drawing, 1-chamber main body, 11-chamber bottom plate, 2-reinforced concrete arch center, 21-arched beam, 22-upright post, 23-foundation part, 3-reinforced concrete, 4-spray anchor net and 5-bracket upright post.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Aiming at the problems that the existing combined support mode of the shotcrete net, the anchor cable and the reinforced concrete is poor in support effect in a thick and large soft rock stratum, the anchor cable needs to be subjected to a drawing test, and the construction cost of the anchor cable is high; equipment for drilling and erecting anchor cables needs a larger construction space; the side walls of the middle lower part of the chamber are supported less; the chamber supporting structure and the chamber can solve the problems that the prior combined supporting mode of the shotcrete net, the anchor rope and the reinforced concrete has poor supporting effect on thick and large soft rock layers, and the anchor rope needs to be subjected to a drawing test, so that the construction anchor rope cost is high; equipment for drilling and erecting anchor cables needs a larger construction space; the side walls of the middle lower part of the chamber are supported less; the sealing difficulty is high, the construction quality is not controlled well, and the like.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to illustrate the chamber supporting structure and the chamber provided by the present invention, fig. 1 shows the structure of the chamber supporting structure of the embodiment of the present invention; FIG. 2 shows the structure of section II-II of FIG. 1; fig. 3 shows the structure of section III-III of fig. 1.
As shown in fig. 1 to 3, the supporting structure of the chamber provided by the invention comprises a reinforced concrete 3 and a reinforced concrete arch frame 2 arranged outside the chamber; the reinforced concrete arch center 2 comprises an arch beam 21 arranged outside the top end of the chamber, upright posts 22 arranged at two ends of the bottom of the arch beam 21 and a base part 23 arranged at the bottom of the upright posts 22; the upright posts 22 are arranged on the outer side wall of the chamber; the arched girders 21 and the upright columns 22 form an integrated structure with the top end of the chamber and the side wall of the chamber through pouring of the reinforced concrete 3.
The underground chamber is characterized in that the underground chamber is formed by reinforced concrete 3 and a reinforced concrete arch center 2 arranged outside the underground chamber; the reinforced concrete arch center 2 comprises an arch beam 21 arranged outside the top end of the chamber, upright posts 22 arranged at two ends of the bottom of the arch beam 21 and a base part 23 arranged at the bottom of the upright posts 22; the upright posts 22 are arranged on the outer side wall of the chamber; the arched girders 21 and the upright posts 22 form an integrated structure with the top end of the chamber and the side wall of the chamber by pouring reinforced concrete 3. The construction can be synchronously poured with the chamber wall, and the support structure has good integrity; in the process of supporting, no large-scale mechanical operation exists; the reinforced concrete arch frame reinforces the top and the side wall of the chamber, so that the stability of the whole chamber can be ensured; the method has the advantages of small construction space, small construction difficulty, good control of construction quality, contribution to the stabilization of the whole surrounding rock and the excavation of the underground chamber, low cost and the like.
The reinforced concrete arch center 2 calculates the falling height of the loose ring according to the loose ring theory to obtain the external force load of the whole chamber; in the width direction of the vertical chamber, the number and the spacing of the reinforced concrete arches are reasonably arranged, the spacing meets the construction space, and the specification of the reinforced concrete arches is not required to be too large; and calculating the overall dimension, concrete grade and reinforcing parameters of each reinforced concrete arch according to the external load of each reinforced concrete arch, wherein the overall dimension, concrete grade and reinforcing parameters comprise arch beam design, upright column design and foundation design.
As a preferable scheme of the invention, the reinforced concrete arch center comprises a spray anchor net 4 arranged outside the reinforced concrete arch center 2. Determining related technical parameters of the shotcrete net 4 according to an engineering class ratio method and by combining the span and height of the chamber, the rock engineering quality grade and the technical specification of the geotechnical anchor rod and shotcrete support engineering; the technical parameters comprise the thickness and the strength grade of the sprayed concrete, and the specification and the arrangement distance of the anchor rods. The spray anchor net 4 can seal the rock stratum to prevent the rock stratum from weathering and falling off, and can reinforce the broken loose ring to enable the loose ring to form a natural rock arch to resist external stress.
As a preferred aspect of the present invention, the shape of the arched beam 21 is the same as the shape of the roof of the chamber. The combination of the two is better.
As a preferred scheme of the invention, the arched beam 21 is formed by bundling at least two beam reinforcements through beam reinforcement; and/or, the column 22 is formed from at least two column reinforcements bundled by a column reinforcement. In order to make the reinforced concrete arch 2 reach the bearing strength required by construction, the design process can be set according to the calculation of related technical parameters, but in general, in order to ensure the bearing strength of the reinforced concrete arch 2, the arch beam 21 is composed of at least two beam reinforcements, and the upright column 22 is composed of at least two column reinforcements. The beam reinforcing bars and the column reinforcing bars not only play a role in binding the beam reinforcing bars and the column reinforcing bars, but also are used for being lapped with the reinforcing bars of the underground chambers.
As the preferred scheme of the invention, the arched beam 21 is connected with the top end of the chamber in a lap joint manner through a beam reinforcement and a top reinforcement of the chamber; the pillars 22 are connected with the side wall of the chamber by the pillar reinforcement and the side wall reinforcement of the chamber in an overlapping way. In the construction process, the reinforcing bars (beam reinforcing bars and column reinforcing bars) of the reinforced concrete arch centering 2 are overlapped with the chamber wall reinforcing bars (top and side walls) of the chamber according to the design, so that the integrity of the reinforced concrete arch centering 2 and the chamber wall of the chamber is ensured.
As a preferred aspect of the present invention, the arched girders 21 and the pillars 22 form an integrated structure with the inside of the top end of the chamber and the side walls of the chamber by casting the reinforced concrete 3 on the inside of the top end of the chamber and the inside walls of the chamber. Pouring is carried out on the inner side wall of the chamber, so that construction is more convenient, and the appearance of the chamber is not influenced.
In a preferred embodiment of the present invention, the arched beam 21 is connected to the upright 22 in an overlapping manner. The arched girder 21 and the upright post 22, the upright post 22 and the base part 23 can be lapped according to the design through reinforcing bars, and the integrity of the reinforced concrete arch center 2 is ensured.
As a preferred aspect of the present invention, the base portion 23 includes a base plate and a pillar fixing structure provided on the top of the base plate. The stand column is convenient to build through the foundation slab and the stand column fixing structure. Wherein, the stress of the foundation slab should be less than the compressive strength of the rock, otherwise, the size of the foundation slab should be increased.
The invention provides a chamber, which comprises a chamber main body 1 and a chamber bottom plate 11 arranged at the bottom of the chamber main body 1; the chamber supporting structure 2 as described above is provided on the side wall and the top end of the chamber body 11.
The underground chamber is characterized in that the underground chamber is formed by reinforced concrete 3 and a reinforced concrete arch center 2 arranged outside the underground chamber; the reinforced concrete arch center 2 comprises an arch beam 21 arranged outside the top end of the chamber, upright posts 22 arranged at two ends of the bottom of the arch beam 21 and a base part 23 arranged at the bottom of the upright posts 22; the upright posts 22 are arranged on the outer side wall of the chamber; the arched girders 21 and the upright posts 22 form an integrated structure with the top end of the chamber and the side wall of the chamber by pouring reinforced concrete 3. The construction can be synchronously poured with the chamber wall, and the support structure has good integrity; in the process of supporting, no large-scale mechanical operation exists; the reinforced concrete arch frame reinforces the top and the side wall of the chamber, so that the stability of the whole chamber can be ensured; the method has the advantages of small construction space, small construction difficulty, good control of construction quality, contribution to the stabilization of the whole surrounding rock and the excavation of the underground chamber, low cost and the like.
As a preferred aspect of the present invention, the foundation portion 23 is provided on the chamber floor 11. The foundation part 23 is fixed on the chamber bottom plate 11, and can reinforce the chamber bottom plate 11 to prevent the chamber from generating uneven settlement.
As a preferable scheme of the present invention, a corbel column 5 is provided on the sidewall of the chamber body 1. The bracket upright post 5 can support the side wall of the chamber main body 1.
According to the concrete embodiment, the chamber supporting structure and the chamber provided by the invention are characterized in that the reinforced concrete and the reinforced concrete arch center arranged outside the chamber are adopted; the reinforced concrete arch center comprises an arch beam arranged outside the top end of the chamber, upright posts arranged at two ends of the bottom of the arch beam and a foundation part arranged at the bottoms of the upright posts; the upright post is arranged on the outer side wall of the chamber; the arched beams and the upright posts form an integrated structure with the top end of the chamber and the side wall of the chamber by pouring reinforced concrete. The construction can be synchronously poured with the chamber wall, and the support structure has good integrity; in the process of supporting, no large-scale mechanical operation exists; the reinforced concrete arch frame reinforces the top and the side wall of the chamber, so that the stability of the whole chamber can be ensured; the method has the advantages of small construction space, small construction difficulty, good control of construction quality, contribution to the stabilization of the whole surrounding rock and the excavation of the underground chamber, low cost and the like.
The chamber support structure and chamber proposed according to the present invention are described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the chamber support structure and chamber of the invention described above without departing from the scope of the invention. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (10)
1. A supporting structure of an underground chamber is characterized by comprising reinforced concrete and a reinforced concrete arch center arranged outside the underground chamber; wherein the content of the first and second substances,
the reinforced concrete arch center comprises an arch beam arranged outside the top end of the chamber, upright columns arranged at two ends of the bottom of the arch beam and a foundation part arranged at the bottoms of the upright columns;
the upright posts are arranged on the outer side wall of the chamber;
the arched girders and the upright posts form an integrated structure with the top end of the chamber and the side wall of the chamber through the pouring of the reinforced concrete.
2. The chamber support structure of claim 1, further comprising a shotcrete mesh disposed outside the reinforced concrete arch.
3. The chamber support structure of claim 1,
the shape of the arched beam is the same as that of the top end of the chamber.
4. The chamber support structure of claim 1,
the arched girder is formed by bundling at least two girder reinforcing steel bars through girder reinforcing steel bars; and/or the presence of a gas in the gas,
the upright post is formed by bundling at least two post reinforcing steel bars through post reinforcing steel bars.
5. The chamber support structure of claim 4,
the top ends of the arched beams and the chamber are connected with the top end reinforcing bar of the chamber in a lap joint mode through the beam reinforcing bar;
the upright posts are connected with the side wall of the chamber through the post reinforcing bars in a lap joint mode.
6. The chamber support structure of claim 5,
the arched beams and the upright posts form an integrated structure with the inner side of the top end of the chamber and the side wall of the chamber through pouring of the reinforced concrete on the inner side of the top end of the chamber and the inner side wall of the chamber.
7. The chamber support structure of claim 1, wherein the arched beams are in overlapping connection with the columns.
8. The chamber support structure of claim 1,
the foundation portion comprises a foundation slab and an upright post fixing structure arranged at the top of the foundation slab.
9. The chamber comprises a chamber main body and a chamber bottom plate arranged at the bottom of the chamber main body; wherein the chamber support structure of any one of claims 1 to 8 is provided on the side walls and the top end of said chamber body.
10. The chamber of claim 9,
the foundation part is arranged on the chamber bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494648.4A CN111648795A (en) | 2020-06-03 | 2020-06-03 | Underground chamber supporting structure and underground chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010494648.4A CN111648795A (en) | 2020-06-03 | 2020-06-03 | Underground chamber supporting structure and underground chamber |
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| Publication Number | Publication Date |
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| CN111648795A true CN111648795A (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010494648.4A Pending CN111648795A (en) | 2020-06-03 | 2020-06-03 | Underground chamber supporting structure and underground chamber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832817A (en) * | 2021-01-27 | 2021-05-25 | 兖州中材建设有限公司 | Underground chamber ore bin supporting structure and construction process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150259942A1 (en) * | 2014-03-13 | 2015-09-17 | Henry Crichlow | Concrete shell construction method |
| CN205805579U (en) * | 2016-05-26 | 2016-12-14 | 西安科技大学 | Coal mine inclined shaft dark cave section excavation supporting constructing structure |
| CN109488347A (en) * | 2018-10-25 | 2019-03-19 | 浙江省隧道工程公司 | A kind of excavation construction method for special formation chamber |
| CN110159323A (en) * | 2019-05-09 | 2019-08-23 | 中国葛洲坝集团第一工程有限公司 | The construction method fixed with steel arch-shelf is excavated suitable for extra-large cross-section underground chamber |
| CN212614773U (en) * | 2020-06-03 | 2021-02-26 | 中国恩菲工程技术有限公司 | Underground chamber supporting structure and underground chamber |
-
2020
- 2020-06-03 CN CN202010494648.4A patent/CN111648795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150259942A1 (en) * | 2014-03-13 | 2015-09-17 | Henry Crichlow | Concrete shell construction method |
| CN205805579U (en) * | 2016-05-26 | 2016-12-14 | 西安科技大学 | Coal mine inclined shaft dark cave section excavation supporting constructing structure |
| CN109488347A (en) * | 2018-10-25 | 2019-03-19 | 浙江省隧道工程公司 | A kind of excavation construction method for special formation chamber |
| CN110159323A (en) * | 2019-05-09 | 2019-08-23 | 中国葛洲坝集团第一工程有限公司 | The construction method fixed with steel arch-shelf is excavated suitable for extra-large cross-section underground chamber |
| CN212614773U (en) * | 2020-06-03 | 2021-02-26 | 中国恩菲工程技术有限公司 | Underground chamber supporting structure and underground chamber |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832817A (en) * | 2021-01-27 | 2021-05-25 | 兖州中材建设有限公司 | Underground chamber ore bin supporting structure and construction process thereof |
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