CN206785401U - A kind of screw type assembled tunnel structure - Google Patents
A kind of screw type assembled tunnel structure Download PDFInfo
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- CN206785401U CN206785401U CN201720668273.2U CN201720668273U CN206785401U CN 206785401 U CN206785401 U CN 206785401U CN 201720668273 U CN201720668273 U CN 201720668273U CN 206785401 U CN206785401 U CN 206785401U
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Abstract
A kind of screw type assembled tunnel structure, including section of jurisdiction, the section of jurisdiction has the radian that matches with tunnel inner wall along tunnel ring, four end faces of the section of jurisdiction are the joint face being connected with adjacent section of jurisdiction, and two joint faces of the section of jurisdiction perpendicular to tunnel longitudinal direction are the helicoid for meeting lead angle and pitch relation, the radian and helicoid of the section of jurisdiction make polylith section of jurisdiction helically arrange assembled formation tunnel structure, and the tunnel structure after assembly can be along tunnel Longitudinal extending, the present apparatus reduces single excavated section, shorten the time that sky is faced in face exposure, reduce the construction machinary equipment scale of construction.
Description
Technical field
Tunneling and underground engineering field is the utility model is related to, specifically a kind of screw type assembled tunnel structure.
Background technology
In tunneling and underground engineering, assembled tunnel structure is a kind of conventional structure type, is typically applied with Mechanical Method
Work is engaged, and these machineries mainly include development machine, shield machine and push-bench.The common feature of these methods is must be vertical
Tunnel structure is assembled after full face tunneling on the face of tunnel axis, its weak point there are following several respects：One is due to
Full face tunneling area is very big, and face country rock free face is big, duration length, when stability of rock-soil body is very poor, in order to protect
Hold face stably to generally require to take the measures such as pre support, soil pressure or mud and water balance, adds additional construction costs, reduce
Work efficiency；Second, the Rock And Soil in the range of whole tunnel contour, all using cutter broken rock, tool wear outstanding problem is, it is necessary to frequently
Shut down and change cutter, it is less economical；Third, in order to ensure the smooth development of full face tunneling and assembling, supporting special-purpose machinery is set
The standby scale of construction is big, cost is high, it is difficult to be applied in, in short tunnel.Reduce single excavated section, shorten face exposure face sky when
Between, reduce construction machinary equipment the scale of construction, be improve assembled tunnel structure adaptability urgent need to resolve the problem of.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of diminution single excavated section, shortens face exposure
Face the time of sky, reduce the screw type assembled tunnel structure of the construction machinary equipment scale of construction.
A kind of screw type assembled tunnel structure, including section of jurisdiction, the section of jurisdiction have and tunnel inner wall along tunnel ring
The radian to match, four end faces of the section of jurisdiction are the joint face being connected with adjacent section of jurisdiction, and the section of jurisdiction perpendicular to
Two joint faces of tunnel longitudinal direction are the helicoid for meeting lead angle and pitch relation, and the radian and helicoid of the section of jurisdiction make
Polylith section of jurisdiction helically arranges assembled formation tunnel structure, and the tunnel structure after assembly can be along tunnel Longitudinal extending.It is described
Section of jurisdiction can change section of jurisdiction longitudinal length by the lead angle and pitch for two end faces for adjusting Vertical tunnel longitudinal direction, with control
The longitudinal length that tunnel excavates every time；The ring width of the section of jurisdiction can be then changed according to stability of rock-soil body, with control
The ring width that tunnel processed excavates every time.
The section of jurisdiction bilateral or one side on ring and/or longitudinal direction are provided with tongue and groove.Tongue and groove can improve the stability of connection.
The section of jurisdiction is provided with four end faces and bolt hole is provided with tongue and groove for the bolt hole of connection or the section of jurisdiction,
Adjacent section of jurisdiction is connected by the connecting bolt being arranged in bolt hole.
Due to the condition of Rock And Soil can be enclosed in one only near tunneling structure using said structure, the utility model
Under assembled, substantially reduce Rock And Soil exposure face sky time, protect the stability of tunnel surrounding, improve tunnel and apply
The security of work；The longitudinal length and ring width of section of jurisdiction can adjust according to surrounding rock stability, enhance prefbricated tunnel lining and exist
Applicability in Different Strata condition；Tunnel only has the minimum a part of Rock And Soil of outer layer to be crushed using Tool in Cutting, drops significantly
The low quantities of cutter broken rock, the corresponding plant equipment scale of construction can also greatly reduce.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the schematic diagram of the assembled shaping of the utility model；
Fig. 3 is the schematic diagram that the utility model section of jurisdiction is provided with longitudinal tongue and groove；
Fig. 4 is the schematic diagram that the utility model section of jurisdiction is provided with ring tongue and groove and longitudinal tongue and groove；
Fig. 5 is the excavation in zones schematic diagram in the utility model screw type assembled tunnel；
Fig. 6 is the construction method schematic diagram in the utility model screw type assembled tunnel.
In figure：1-section of jurisdiction；2-connecting bolt；3-helix；4-longitudinal tongue and groove；5-ring link bolt hole；6—
Longitudinally connected bolt hole；7-ring tongue and groove；8-outer ring ring spiral excavation area；9-inner ring forward direction excavation area；10-circulation is opened
Dig into chi；11-back-grouting filling bed.
Embodiment
The utility model is described further with reference to the accompanying drawings and examples.Following circumferences are referred to along tunnel
It is circumferential, axially refer to along tunnel axial direction.
As shown in Figures 1 to 6, a kind of screw type assembled tunnel structure, tunnel structure are filled by section of jurisdiction 1 by connecting bolt 2
With into；The section of jurisdiction is being provided with the radian that matches with tunnel inner wall, four end faces of the section of jurisdiction along tunnel circumferential direction
It is the joint face being connected with adjacent section of jurisdiction, the section of jurisdiction 1 is to meet pitch and spiral in the joint face perpendicular to tunnel longitudinal direction
The curved surface of angular dependence, in other words, this curve refer to that section of jurisdiction when assembled on tunnel, can connect along tunnel longitudinal direction
Junction is provided with a radian, and radian, the radian of axial direction and the inclination angle of joint face that section of jurisdiction is circumferential, and multi-disc section of jurisdiction could be caused along tunnel
Helically arrange towards tunnel precession direction when road is circumferentially assembled, assembled so as to which multi-disc section of jurisdiction 1 can surround tunnel inner wall screw type
Into a complete face of cylinder, in other words, the path that multi-disc section of jurisdiction 1 is installed forms helix 3；It is adjacent referring to Fig. 3 and Fig. 4
Outside the one side of section of jurisdiction 1 is by the way that installation connecting bolt 2 is attached in ring link bolt hole 5 and longitudinally connected bolt hole 6,
Unidirectional (longitudinal tongue and groove 4) or two-way tongue and groove (longitudinal tongue and groove 4 and ring tongue and groove 7) are additionally provided with to increase coupling stiffness.Provided with enterprise
The section of jurisdiction 1 of mouth, using the overall structure shown in Fig. 3, or it can use and overlapped shown in Fig. 4 by double-deck section of jurisdiction according to manufacturing conditions
The combining structure of formation；The section of jurisdiction 1 can change section of jurisdiction longitudinal length by adjusting lead angle and pitch, to control tunnel
The longitudinal length that road excavates every time；The section of jurisdiction width can also be changed according to stability of rock-soil body, to control tunnel every
The width of secondary excavation.
Screw type assembled tunnel structure is assembled by section of jurisdiction 1 and connecting bolt 2, due to the front/rear end of section of jurisdiction 1
It is helical buckling, the circular construction joint for the screw type assembled tunnel structure being assembled into is helix 3, thus with section of jurisdiction 1
Quantity be continuously increased, tunnel structure circumferentially with longitudinal direction constantly extension, ultimately form complete tunnel.
Referring to Fig. 5 and Fig. 6, the construction method of screw type assembled tunnel structure is as follows：
The whole tunnel cross-section for needing to excavate is divided into outer ring ring spiral excavation area 8 and inner ring forward direction excavation area 9.Outer ring
Ring spiral excavation area 8 is excavated in advance using cutter broken rock or artificial broken rock mode, and inner ring forward direction excavation area 9 is in relevant position
Section of jurisdiction 1 it is assembled it is good, there is safety guarantee after, drilling and blasting method, static blasting method or excavation are used according to the selection of the intensity of Rock And Soil
Machine, milling digging machine universal machine excavate.The thickness of outer ring ring spiral excavation area 8 considers both sides one based on the thickness of section of jurisdiction 1
Fixed working space and determine, outside exceeds the space of section of jurisdiction 1, by secondary grouting, forms back-grouting filling bed 11 to protect
Demonstrate,prove structure safety.
The construction procedure of screw type assembled tunnel structure is：1. in outer ring to spiral excavation area 8 along the direction of helix 3
Excavate a circulation and excavate drilling depth 10；2. excavate assembled one piece of section of jurisdiction 1 in the space of drilling depth 10 in circulation；3. in the outside of section of jurisdiction 1
Carry out slip casting and form back-grouting filling bed 11.Repeat the above steps, tunnel structure is constantly pushed away forward along the direction of helix 3
Enter.The size of drilling depth 10 is excavated in circulation, determines that stability is poorer, and value is smaller according to the stability of Rock And Soil, otherwise value is got over
Greatly.The size of section of jurisdiction 1 should excavate drilling depth 10 with circulation and match.
Claims (3)
1. a kind of screw type assembled tunnel structure, including section of jurisdiction, it is characterised in that：The section of jurisdiction along tunnel ring have with
The radian that tunnel inner wall matches, four end faces of the section of jurisdiction are the joint face being connected with adjacent section of jurisdiction, and the pipe
Two joint faces of the piece perpendicular to tunnel longitudinal direction are the helicoid that meets lead angle and pitch relation, the radian of the section of jurisdiction and
Helicoid makes polylith section of jurisdiction helically arrange assembled formation tunnel structure, and the tunnel structure after assembly can longitudinally prolong along tunnel
Stretch.
2. screw type assembled tunnel structure according to claim 1, it is characterised in that：The section of jurisdiction in ring and/or
Bilateral or one side are provided with tongue and groove on longitudinal direction.
3. screw type assembled tunnel structure according to claim 2, it is characterised in that：The section of jurisdiction is set on joint face
Have and be provided with bolt hole on tongue and groove for the bolt hole of connection or the section of jurisdiction, adjacent section of jurisdiction passes through the company that is arranged in bolt hole
Connecting bolt connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668273.2U CN206785401U (en) | 2017-06-09 | 2017-06-09 | A kind of screw type assembled tunnel structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720668273.2U CN206785401U (en) | 2017-06-09 | 2017-06-09 | A kind of screw type assembled tunnel structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206785401U true CN206785401U (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720668273.2U Active CN206785401U (en) | 2017-06-09 | 2017-06-09 | A kind of screw type assembled tunnel structure |
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| CN (1) | CN206785401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023306A (en) * | 2017-06-09 | 2017-08-08 | 中南大学 | A kind of screw type assembled tunnel structure and its construction method |
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2017
- 2017-06-09 CN CN201720668273.2U patent/CN206785401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023306A (en) * | 2017-06-09 | 2017-08-08 | 中南大学 | A kind of screw type assembled tunnel structure and its construction method |
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