CN212250051U - Mine method tunnel supporting construction of operation high-speed railway is worn down - Google Patents
Mine method tunnel supporting construction of operation high-speed railway is worn down Download PDFInfo
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- CN212250051U CN212250051U CN202022156754.XU CN202022156754U CN212250051U CN 212250051 U CN212250051 U CN 212250051U CN 202022156754 U CN202022156754 U CN 202022156754U CN 212250051 U CN212250051 U CN 212250051U
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Abstract
The utility model discloses a mine method supporting structure for running high-speed rail by underpass, which comprises a pipe curtain structure, primary support and secondary lining; the secondary lining is positioned on the inner side of the primary support, and the pipe curtain structure is positioned on the outer side of the primary support and distributed on the top and the side of the primary support structure; temporary support steel frames which are transversely and vertically staggered are further arranged in the tunnel and are used as temporary supports for tunnel excavation; the top of the constructed section structure at the two ends of the tunnel is respectively provided with a tip ring beam structure, and the two ends of the pipe curtain structure are fixed on the corresponding tip ring beam structure as supporting points. The utility model discloses a preliminary bracing, temporary support jointly regard as tunnel supporting construction with secondary lining, for ordinary mine method tunnel, have control settlement ability reinforce, construction safe and reliable's advantage.
Description
Technical Field
The utility model belongs to the technical field of mine method tunnel construction, more specifically relates to a wear mine method tunnel supporting construction of operation high-speed railway down.
Background
With the rapid development of traffic infrastructure construction, newly-built tunnels meet the complex working conditions of more and more ground structures such as railways, buildings, roads and the like. Particularly, when the railway line in the underpass operation, especially a high-speed railway, is improperly selected by engineering measures, large ground surface settlement or uneven settlement can be caused, the line is deformed to exceed the limit and needs to be operated at a limited speed, and a large safety accident is caused if the line is deformed to exceed the limit, so that the life and property safety of people is seriously threatened.
At the present stage, the cross section of each type of tunnel is large, on one hand, the faced geological condition is relatively complex, on the other hand, the measures which can be taken are limited due to the limitation of the line arrangement condition, and although the application of the shield construction method has high construction speed and mature technology, the shield construction method is not economical in the construction of short-distance and large-section tunnels. The pipe curtain is used as a construction measure for crossing roads, railways, structures, airports and the like, can greatly reduce the influence of construction on ground activities and other underground construction and pipelines, and has the advantages of no noise and vibration during construction, no need of reducing underground water level, no influence on normal use of upper construction, effective control of ground settlement, reduction of influence on the surrounding environment and the like.
However, the method of using the pipe curtain to wear important facilities at the present stage has the following problems: for rectangular tunnels with extremely high requirements on settlement control, such as a low-speed rail, the construction of jacking or open excavation and cast-in-place after track underpinning is generally adopted, and the construction by a mining method is only selected. Firstly, the conventional pipe curtain auxiliary underground excavation construction technology only depends on a pipe curtain structure as an advance support for a rectangular section tunnel, and the safety of the tunnel in the construction period and the safety of a ground surface building structure are difficult to guarantee; secondly, for the projects such as a low-speed rail penetrating machine which is extremely sensitive to stratum settlement, the conventional pipe curtain method tunnel construction may cause overlarge stratum settlement to influence the operation of railways, corresponding auxiliary measures are required to be taken for processing in the aspect of settlement control, and meanwhile, the safety problem of large-section tunnel construction is solved by combining the situation that the section form and the size of the tunnel at the present stage are various.
SUMMERY OF THE UTILITY MODEL
To prior art's above defect or improvement demand, the utility model provides a wear mine method tunnel supporting construction of operation high-speed railway down adopts the pipe curtain structure as leading supporting construction in advance, and the pipe curtain both ends are fixed through the tip circle roof beam structure that has set up on the construction section, combines preliminary bracing and secondary lining, for ordinary mine method tunnel, has the control and subsides the ability reinforce, construction safe and reliable's advantage.
In order to realize the aim, the mine method supporting structure for running high-speed rail by underpass comprises a pipe curtain structure, primary support and secondary lining; wherein the content of the first and second substances,
the secondary lining is positioned on the inner side of the primary support, and the pipe curtain structure is positioned on the outer side of the primary support and distributed on the top and the side of the primary support structure; temporary support steel frames which are transversely and vertically staggered are further arranged in the tunnel and are used as temporary supports for tunnel excavation;
the top of the constructed section structure at the two ends of the tunnel is respectively provided with a tip ring beam structure, and the two ends of the pipe curtain structure are fixed on the corresponding tip ring beam structure as supporting points.
Furthermore, a primary support steel frame is arranged in the primary support, one end of a vertical temporary support steel frame is fixed with the primary support steel frame at the top, and the other end of the vertical temporary support steel frame is supported at the bottom of the tunnel; two ends of the transverse temporary support steel frame are respectively fixed on the primary support steel frames at two transverse sides of the tunnel.
Furthermore, the joints of the temporary support steel frames and the primary support steel frames and the joints of the transverse temporary support steel frames and the vertical temporary support steel frames are fixed by steel frame joints.
Furthermore, a foot locking steel pipe is further arranged at the joint of the transverse and vertical temporary support steel frame.
Furthermore, the temporary support steel frame divides the section of the tunnel into a plurality of parts, so that when the tunnel is excavated, according to the divided parts, the tunnel excavation is carried out according to the sequence of the two sides, the middle and the top and the bottom.
Furthermore, a plurality of end ring beam supporting piles are arranged at the bottom of the end ring beam structure.
Furthermore, a waterproof device is arranged at the joint of the pipe curtain structure and the end ring beam structure.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the utility model discloses a wear mine method tunnel supporting construction of operation high-speed railway down adopts the pipe curtain structure as leading preliminary supporting construction, and the pipe curtain both ends are fixed through the tip circle beam structure that has set up on the construction section, combines preliminary bracing and secondary lining, for ordinary mine method tunnel, has that control settlement ability is strong, construction safe and reliable's advantage.
(2) The utility model discloses a wear mine method tunnel supporting construction of operation high-speed railway down, inside interval sets up the crisscross interim support steelframe of anyhow, and support the support fixed connection in steelframe and preliminary bracing temporarily, can play the interim supporting role when excavating to the rectangle tunnel terminal surface on the one hand through the interim support steelframe, on the other hand is cut apart into a plurality of parts with the terminal surface through the interim support steelframe temporarily, make whole construction use the interim support steelframe as the boundary, press earlier in the middle of both sides back, the subsection segmentation excavates under the earlier upper and lower back.
Drawings
Fig. 1 is a schematic diagram of a mine method supporting structure of a low-pass operation high-speed rail according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a steel frame and an excavation sequence related to a mine-method supporting structure for running a high-speed rail under a tunnel according to an embodiment of the present invention;
fig. 3 is a schematic view of a longitudinal section structure of a mine-method supporting structure for running high-speed rail by underpass in an embodiment of the present invention;
fig. 4 is a schematic structural view of an end ring beam and a support pile related to a mine-method support structure for running high-speed rail under the ground in an embodiment of the present invention;
fig. 5 is the embodiment of the utility model provides a wear the pipe curtain structural connection sketch that the mining method supporting construction of operation high-speed railway relates to down.
In all the figures, the same reference numerals denote the same features, in particular: the method comprises the following steps of 1-pipe curtain structure, 2-primary support, 3-secondary lining, 4-primary support steel frame, 5-temporary support steel frame, 6-secondary lining construction joint, 7-steel frame joint, 8-locking steel pipe, 9-constructed section structure, 10-excavation face, 11-end ring beam structure and 12-end ring beam support pile.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean that, for example, they may be fixedly connected or detachably connected or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Aiming at the defects of a common mining method construction method, the application provides a tunnel supporting structure of primary supporting, temporary supporting and secondary lining combined supporting for an operation high-speed railway and the like which are penetrated under a tunnel and are sensitive to sedimentation, and a construction method of adopting a pipe curtain as a pre-supporting and adopting subsection excavation in the tunnel. Wherein, fig. 1 is the utility model discloses a wear mine method supporting construction of operation high-speed railway under. As shown in the figure, the utility model discloses wear mine method supporting construction of operation high-speed railway down, including pipe curtain structure 1, preliminary bracing 2, secondary lining 3, preliminary bracing steelframe 4, support steelframe 5 and tip collar tie beam structure 11 etc. temporarily.
Specifically, the secondary lining 3 is located on the inner side of the primary support 2, and the secondary lining 3 is separately arranged on the top and the side of the inner side of the primary support 1 and also arranged on the bottom surface of the tunnel. The pipe curtain structures 1 are located on the outer side of the primary support 2 and distributed on the top and the side edges of the primary support 2, the mutual connection structural schematic diagram between the pipe curtain structures 1 is shown in fig. 5, and two adjacent pipe curtain structures 1 are connected through mutually matched connecting pieces.
Fig. 2 is a schematic diagram of a cross section of a steel frame and an excavation sequence related to a mine method supporting structure for running a high-speed rail downwards, as shown in fig. 2, a primary supporting steel frame 4 is arranged in a primary support 2, the mine method supporting structure of the present invention further comprises a temporary supporting steel frame 5, the temporary supporting steel frame 5 is transversely and vertically arranged in a staggered manner, wherein one end of the vertical temporary supporting steel frame 5 is fixed with the primary supporting steel frame 4 at the top through a steel frame joint 7, and the other end of the vertical supporting steel frame 5 is supported at the bottom of a tunnel; two ends of a transverse temporary support steel frame 5 are respectively fixed on primary support steel frames 4 at two sides of the tunnel and are fixed through steel frame joints 7; handing-over department between horizontal and vertical temporary support steelframe 5, the steelframe that passes through equally connects 7 fixedly to handing-over department still is equipped with lock foot steel pipe 8, further strengthens strutting in the tunnel. In the tunnel longitudinal direction, temporary support steel frames 5 are arranged at certain intervals.
The temporary support steel frame 5 is at least provided with one in the transverse direction, at least two in the vertical direction, in a preferred embodiment of the utility model, two temporary support steel frames 5 are vertically arranged, one temporary support steel frame 5 is transversely arranged, the transverse and vertical primary support steel frames divide the rectangular section of the excavated tunnel into six parts, when the tunnel is excavated, the soil body on the upper parts of the two transverse sides is excavated firstly, the lower soil body corresponding to the two transverse sides is excavated, the soil body above the middle part is excavated, and finally the soil body at the bottom in the middle part is excavated; namely, the two sides are arranged first, the middle is arranged second, and the upper part is arranged first, and the lower part is arranged second. The utility model discloses a mine method supporting construction is applicable to the rectangle section tunnel, because rectangle section transverse span is longer, the soil body at middle part can act as the supporting role, is favorable to improving the stability of excavation in-process.
The secondary lining is divided into four parts from e to g, namely a top section, a bottom section and two side surface sections; after the soil body excavation from a to d is finished, secondary lining is carried out according to the sequence of e, f and g, namely according to the sequence of a bottom section, a side section and a top section.
Fig. 3 is the utility model discloses under wear the mine method supporting construction longitudinal section structural schematic of operation high-speed railway. Fig. 4 is the utility model discloses wear the tip collar tie beam and the support pile structural sketch that the mining method supporting construction of operation high-speed railway relates to under. The utility model discloses a mine method tunnel supporting construction, the open cut method is adopted at the tunnel both ends, can construct the foundation ditch of working well or slope excavation in advance to as tunnel construction's working face, carry out tunnel construction respectively from the tunnel both ends. The top of the section structure 9 that has been constructed at both ends is equipped with tip collar tie beam structure 11 respectively for the pipe curtain structure 1 at fixed top is equipped with the steel reinforcement cage in the pipe curtain structure 1 and is used for pouring into the concrete, in order to increase supporting construction's rigidity, pipe curtain structure 1 both ends are fixed in on the tip collar tie beam structure 11 and are regarded as stable strong point, have reduced the settlement of tunnel excavation in-process. The bottom of the end ring beam structure 11 is transversely provided with a plurality of end ring beam supporting piles 12 which play a role in temporarily supporting the end ring beam structure 11.
Preferably, the joint of the pipe curtain structure 1 and the end ring beam structure 11 is provided with a waterproof device, so as to play a role in waterproof and water-proof.
The utility model discloses a wear mine method supporting construction of operation high-speed railway down adopts the pipe curtain structure as leading preliminary supporting construction, and the pipe curtain both ends are fixed through the tip circle beam structure that has set up on the construction section, combines preliminary bracing and secondary lining, for ordinary mine method tunnel, has that control settlement ability is strong, construction safe and reliable's advantage.
The utility model discloses a wear mine method supporting construction of operation high-speed railway down, inside interval sets up the crisscross interim support steelframe of anyhow, and support the support fixed connection in steelframe and preliminary bracing temporarily, can play the interim supporting role when excavating to the rectangle tunnel terminal surface on the one hand through the interim support steelframe, on the other hand is cut apart into a plurality of parts with the terminal surface through the interim support steelframe temporarily for whole construction uses the interim support steelframe as the boundary, press earlier in the middle of both sides back, the subsection segmentation excavates under the earlier upper and lower back.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (7)
1. A mine method supporting structure for running high-speed rail under a tunnel is characterized by comprising a pipe curtain structure (1), a primary support (2) and a secondary lining (3); wherein the content of the first and second substances,
the secondary lining (3) is positioned on the inner side of the primary support (2), and the pipe curtain structure (1) is positioned on the outer side of the primary support (2) and distributed on the top and the side edges of the primary support (2); temporary support steel frames (5) which are transversely and vertically staggered are further arranged in the tunnel and are used as temporary supports for tunnel excavation;
the top of the tunnel two-end constructed section structure is respectively provided with a tip ring beam structure (11), and the two ends of the pipe curtain structure (1) are fixed on the corresponding tip ring beam structure (11) as supporting points.
2. The mining method supporting structure of a underpass operation high-speed railway according to claim 1, wherein a primary supporting steel frame (4) is arranged in the primary support (2), one end of a vertical temporary supporting steel frame (5) is fixed with the primary supporting steel frame (4) at the top, and the other end of the vertical temporary supporting steel frame is supported at the bottom of a tunnel; two ends of the transverse temporary support steel frame (5) are respectively fixed on the primary support steel frames (4) at two transverse sides of the tunnel.
3. The mining method supporting structure of a underpass high-speed railway according to claim 2, wherein the joint of the temporary support steel frame (5) and the primary support steel frame (4) and the joint of the transverse and vertical temporary support steel frames (5) are fixed by steel frame joints (7).
4. The mine-method supporting structure for running high-speed rails downwards according to any one of claims 1 to 3, wherein a locking steel pipe (8) is further arranged at the joint of the transverse and vertical temporary supporting steel frames (5).
5. The mining method supporting structure of a underpass operating high-speed railway according to claim 4, characterized in that the temporary supporting steel frame (5) divides the tunnel section into a plurality of sections.
6. The mining method supporting structure of a underpass operating high-speed railway according to claim 1 or 5, characterized in that a plurality of end ring beam supporting piles (12) are arranged at the bottom of the end ring beam structure (11).
7. The mining method supporting structure for underpass operation of high-speed railway according to claim 6, characterized in that a waterproof device is arranged at the joint of the pipe curtain structure (1) and the end ring beam structure (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022156754.XU CN212250051U (en) | 2020-09-27 | 2020-09-27 | Mine method tunnel supporting construction of operation high-speed railway is worn down |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022156754.XU CN212250051U (en) | 2020-09-27 | 2020-09-27 | Mine method tunnel supporting construction of operation high-speed railway is worn down |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997646A (en) * | 2020-09-27 | 2020-11-27 | 中铁第四勘察设计院集团有限公司 | Mine method tunnel supporting structure for running high-speed rail through lower part and construction method thereof |
| CN111997646B (en) * | 2020-09-27 | 2024-07-09 | 中铁第四勘察设计院集团有限公司 | Mine tunnel supporting structure for running high-speed rail downwards and construction method thereof |
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2020
- 2020-09-27 CN CN202022156754.XU patent/CN212250051U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997646A (en) * | 2020-09-27 | 2020-11-27 | 中铁第四勘察设计院集团有限公司 | Mine method tunnel supporting structure for running high-speed rail through lower part and construction method thereof |
| CN111997646B (en) * | 2020-09-27 | 2024-07-09 | 中铁第四勘察设计院集团有限公司 | Mine tunnel supporting structure for running high-speed rail downwards and construction method thereof |
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