CN111577320A - High security civil engineering tunnel support - Google Patents
High security civil engineering tunnel support Download PDFInfo
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- CN111577320A CN111577320A CN202010443251.2A CN202010443251A CN111577320A CN 111577320 A CN111577320 A CN 111577320A CN 202010443251 A CN202010443251 A CN 202010443251A CN 111577320 A CN111577320 A CN 111577320A
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- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 23
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000009434 installation Methods 0.000 description 24
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005641 tunneling Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- 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
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- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a high-safety civil engineering tunnel support, which belongs to the field of tunnel support and comprises a plurality of embedded supports and a plurality of jacking support mechanisms, wherein the embedded supports are paved in a tunnel at intervals along the depth direction of the tunnel; the jacking supporting mechanism is arranged at the lower side of the corresponding embedded support and used for adjusting the displacement of the embedded support; the top wall of the embedded support is provided with a plurality of longitudinal beams, each longitudinal beam is provided with a plurality of first anchor rods, and the first anchor rods are arranged on the corresponding longitudinal beams along the depth direction of the tunnel; be provided with round seal assembly on pre-buried support's the inside wall, every seal assembly all extends towards the tunnel depth direction. The mounting efficiency of the pre-buried support is improved through the jacking supporting mechanism, the stability and the bearing capacity of the pre-buried support are improved through the anchor rod, and the waterproof sealing problem of the pre-buried support is solved through the sealing assembly.
Description
Technical Field
The invention relates to the field of tunnel support, in particular to a high-safety civil engineering tunnel support.
Background
In tunnel engineering, in order to ensure the smooth and safe excavation process, equipment is generally adopted for tunneling in sequence, and a support bracket is adopted for supporting the excavated tunnel wall, so that the tunnel wall is prevented from collapsing along with the tunneling of the equipment.
The existing tunnel supporting bracket usually adopts a steel arch or a steel grating arch for supporting, the steel arch is assembled and welded on a tunnel excavation site after being processed in sections, and supporting concrete is sprayed to reinforce the tunnel wall. In the process of assembling and welding the steel arch, the steel arch needs to be manually climbed to the installation position of the inner wall of the tunnel, and then the steel arch of each section is lifted to the installation position to be spliced and installed. Such supporting bracket structure, the installation rate is slow, and because the tunnel cave wall belongs to the excavation initial stage, tunnel country rock structure is unstable, long-time concatenation installation, and the easy risk that takes place the rock mass and drop even collapse seriously influences operation personnel's security.
In addition, in the tunnel excavation process, because there is the clearance between supporting bracket and the excavation equipment, there is the risk of leaking, leaking sand, influences its waterproof sealing nature. Meanwhile, the stability and the bearing capacity of the support bracket will influence the service life of the support bracket.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a high-safety civil engineering tunnel support, which improves the installation efficiency of an embedded support through a jacking support mechanism, improves the stability and the bearing capacity of the embedded support through an anchor rod, and solves the waterproof sealing problem through a sealing assembly.
In order to achieve the above object, the technical solution of the present invention is as follows.
A high-safety civil engineering tunnel support comprises a plurality of pre-buried supports and a plurality of jacking supporting mechanisms,
the embedded supports are laid in the tunnel at intervals along the depth direction of the tunnel;
the jacking supporting mechanism is arranged at the lower side of the corresponding embedded support and used for adjusting the displacement of the embedded support;
the top wall of the embedded support is provided with a plurality of longitudinal beams, each longitudinal beam is provided with a plurality of first anchor rods, and the first anchor rods are arranged on the corresponding longitudinal beams along the depth direction of the tunnel;
be provided with round seal assembly on pre-buried support's the inside wall, every seal assembly all extends towards the tunnel depth direction.
Further, pre-buried support includes:
the top beam is arranged at the top of the tunnel;
the supporting beams are arranged on two sides of the top beam;
every one end of a supporting beam all is provided with a plurality of splice bars, and through a plurality of splice bars with the connection can be dismantled to the tip of roof beam.
Furthermore, a cross beam is arranged on the lower side of the top beam, and two ends of the cross beam are detachably connected with two side walls of the top beam respectively;
the beam is provided with a plurality of reinforcing beams extending towards the top beam, one end of each reinforcing beam is hinged with the beam, and the other end of each reinforcing beam is detachably connected with the top beam.
Furthermore, a plurality of through holes are respectively formed in the two ends of the top beam, one end of each connecting rib is hinged to the corresponding supporting beam, and the other end of each connecting rib is inserted into the corresponding through hole.
Furthermore, each connecting rib is sleeved with a second anchor rod, and each second anchor rod is rotatably connected with the connecting rib.
Further, the bottom of a supporting beam is provided with an installation cavity, an adjusting fastener is arranged in the installation cavity, and the adjusting fastener comprises:
an adjusting nut disposed at a bottom opening of the installation chamber;
an adjusting strut, one end of which is configured in the mounting cavity and is in threaded connection with the adjusting nut;
the adjusting nut is rotatably connected with the bottom opening of the mounting cavity;
the mounting cavity is internally provided with a limiting rod, and the limiting rod is inserted into the end part of the adjusting support column, which is positioned in the mounting cavity, and is movably connected with the adjusting support column.
Further, each of the seal assemblies includes:
the fixing piece is in an inverted U shape and is arranged on the inner wall of the embedded bracket;
2 sealing elements which are respectively arranged on two side walls of the fixed element; each of the seals includes: the elastic rubber plate, the movable pressing plate and the pressing piece;
an included angle alpha is formed between one end of the elastic rubber plate extending towards the depth direction of the tunnel and the fixed end of the elastic rubber plate;
one end of the movable pressing plate, which extends towards the depth direction of the tunnel, is hinged with the fixed end of the movable pressing plate, and a clamp spring is arranged on the hinged end of the movable pressing plate;
one end of the pressing piece sequentially penetrates through the movable pressing plate and the elastic rubber plate and is detachably connected with the side wall of the fixing piece.
Furthermore, the included angle alpha is 110-135 degrees.
Further, the number of the jacking supporting mechanisms is smaller than or equal to that of the embedded supports.
Further, the jacking support mechanism comprises a support frame, a moving assembly and a lifting assembly;
the top of the support frame is provided with a slide rail, and the moving assembly is movably arranged on the slide rail;
the lifting assembly comprises:
the 2 telescopic arms are rotatably arranged on the moving assembly and used for lifting the embedded support;
the supporting grid plate is arranged at the top ends of the 2 telescopic arms and is hinged with the 2 telescopic arms; and
the support arm oil cylinder is arranged on one side of the telescopic arm;
one end of each support arm oil cylinder is hinged with the moving assembly, and the other end of each support arm oil cylinder is hinged with the telescopic arm;
the supporting grid plate is detachably connected with the embedded support.
The invention provides a high-safety civil engineering tunnel support which has the following beneficial effects:
1. the tunnel support structure provided by the invention comprises the embedded support and the jacking support mechanism, and the horizontal and vertical displacement of the embedded support is adjusted through the jacking support mechanism, so that the installation efficiency of the embedded support is improved, and unsafe factors caused by long-time splicing installation are avoided.
2. According to the invention, the plurality of longitudinal beams are arranged at the top of the embedded support, the row of first anchor rods are arranged on the corresponding longitudinal beams, and the first anchor rods are inserted into the tunnel wall to enhance the installation stability and the bearing capacity of the embedded support, so that the embedded support can be stressed uniformly and reinforced. A circle of sealing assembly is arranged on the inner wall of the embedded support and used for solving the waterproof sealing problem in the tunneling and excavating process.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a' of fig. 1.
Fig. 3 is a schematic structural diagram of a top beam and a support beam according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a seal assembly in an embodiment of the invention.
Fig. 5 is a schematic structural diagram of a lifting assembly according to an embodiment of the present invention.
Reference numerals:
100. pre-burying a bracket; 110. a top beam; 111. a through hole; 120. a support beam; 121. installing a chamber; 122. a limiting rod; 130. connecting ribs; 131. a second anchor rod; 140. a cross beam; 141. a reinforcing beam; 150. adjusting the fastener; 151. adjusting the nut; 152. adjusting the strut; 160. a stringer; 161. a first anchor rod; 170. a seal assembly; 171. a fixing member; 172. an elastic rubber plate; 173. a movable pressing plate; 174. a compression member;
200. jacking and supporting mechanisms; 210. a support frame; 211. a slide rail; 220. a moving assembly; 230. a lifting assembly; 231. a telescopic arm; 232. supporting the grid plate; 233. a support arm oil cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a high-safety civil engineering tunnel support according to an embodiment of the present invention. This support is mainly through installing a plurality of pre-buried supports 100 and a plurality of jacking supporting mechanism 200 in the tunnel, adjusts the level of pre-buried support and the displacement of vertical direction through jacking supporting mechanism, and then improves the installation effectiveness of pre-buried support, avoids the emergence of the unsafe factor that long-time concatenation installation brought.
The pre-buried support 100 is laid in the tunnel at intervals along the depth direction of the tunnel and mainly plays a role in supporting the tunnel wall. Wherein, be provided with a plurality of longerons 160 on the roof of pre-buried support 100, all be provided with a plurality of first stock 161 on every longeron 160, a plurality of first stock 161 are laid on the longeron 160 that corresponds along the tunnel depth direction. That is, each longitudinal beam is evenly provided with a plurality of first anchor rods along the depth direction, and the number of the first anchor rods can be determined according to the depth length of a single longitudinal beam. In this embodiment, be provided with a plurality of longerons at the top of pre-buried support, set up one row of first stock on the longeron that corresponds, insert first stock in the tunnel cave wall for strengthen pre-buried support's installation stability and bearing capacity, make pre-buried support can the atress even, be used for consolidating pre-buried support.
In order to avoid the risk of water leakage and sand leakage in the process of tunnel excavation, a circle of sealing assembly 170 is arranged on the inner side wall of the embedded support 100, and each sealing assembly 170 extends towards the depth direction of the tunnel. In the embodiment, a circle of sealing assembly is arranged on the inner wall of the embedded support, so that the waterproof sealing problem in the tunneling and excavating process can be solved.
The jacking support mechanism 200 is disposed at the lower side of the corresponding embedded bracket 100, and is used for adjusting the displacement of the embedded bracket 100. In the specific implementation process, the corresponding embedded support is jacked and supported through the jacking supporting mechanism, and displacement is horizontally adjusted to match the corresponding tunnel wall position, so that the installation efficiency and accuracy of the embedded support are improved.
Referring to fig. 1 to 3, the pre-buried bracket 100 includes a top beam 110 and a support beam 120.
The top beam 110 is arranged at the top of the tunnel; a cross beam 140 is arranged on the lower side of the top beam 110, and two ends of the cross beam 140 are detachably connected with two side walls of the top beam 110 respectively; specifically, the cross beam mainly plays a role in strengthening the stability of the two side walls of the top beam and is used for supporting the two side walls of the top beam. The both ends of crossbeam are provided with right angle shape connecting portion to can dismantle with two right angle shape connecting portions that correspond through the bolt and be connected, the installation of conveniently adjusting. Specifically, a plurality of reinforcing beams 141 extending toward the top beam 110 are disposed on the cross beam 140, one end of each reinforcing beam 141 is hinged to the cross beam 140, and the other end is detachably connected to the top beam 110. The reinforcing beam is used for reinforcing the stability of the cross beam and the top beam so as to reinforce and support two side walls of the top beam. For example, the middle part of the cross beam is provided with a hinge rod connected with the corresponding reinforcing beam, and the reinforcing beam is rotatably connected to the corresponding top beam by measuring and calculating the supporting force so as to equally divide the connecting acting force between the top beam and the cross beam and realize the reinforcing effect on the top beam.
The support beams 120 are disposed at lower ends of both side walls of the top beam 110; during installation, the top beam is supported by the jacking support mechanism 200, and after horizontal adjustment and positioning, the support beams 120 are installed at the lower ends of the two side walls of the top beam to support the top beam 110. Specifically, a plurality of connecting ribs 130 are uniformly arranged on the top end of each supporting beam 120 along the depth direction of the tunnel, and the top end of each supporting beam 120 is detachably connected with the end of the top beam 110 through the plurality of connecting ribs 130, so that the stability of connection between the supporting beams and the top beam is enhanced. For example, the top beam 110 has a plurality of through holes 111 respectively formed at both ends thereof for mounting corresponding connecting ribs, one end of each connecting rib 130 is hinged to the corresponding support beam 120, and the other end thereof is inserted into the corresponding through hole 111. Be provided with the recess on the supporting beam, the splice bar passes through the articulated shaft to be installed in this recess, is provided with the recess model assorted lug rather than corresponding on the back timber, and the through-hole sets up on the lug that corresponds, inserts the recess that corresponds with the lug, inserts the splice bar again in the through-hole, can realize the installation to a supporting beam.
Referring to fig. 3 again, in order to enhance the stability of the support beam and the tunnel wall and further reinforce the top beam, a second anchor rod 131 is sleeved on each connecting rib 130, and each second anchor rod 131 is rotatably connected with the connecting rib 130. During construction, the second anchor rod is inserted into the side wall of the tunnel wall, so that the second anchor rod can play a role in traction and fixation on the connecting ribs, and a supporting beam is further reinforced. For example, the one end that the second stock is close to the splice bar sets up a lantern ring, conveniently embolias the splice bar in, also conveniently adjusts the convenience that the second stock inserted in the hole wall, and the one end that the splice bar was kept away from to the second stock sets up sharp toper stock insert head to insert the hole wall in convenient for.
In order to facilitate the height adjustment of the support beam so as to stably support the top beam, the lower side of the support beam 120 is provided with an adjustment fastener 150. Wherein, the bottom of the support beam 120 is provided with a mounting chamber 121 for mounting the adjusting fastener 150, and the top end of the adjusting fastener 150 is inserted into the mounting chamber 121 to support and adjust the height of the support beam.
Referring again to fig. 2, the adjustment fastener 150 includes an adjustment nut 151 and an adjustment post 152.
The adjusting nut 151 is disposed on the bottom opening of the mounting chamber 121 for rotatably adjusting the height; the adjustment nut 151 is rotatably coupled to the bottom opening of the mounting chamber 121. Specifically, the rotatable joint in adjusting nut's top is on the bottom opening of installation cavity, is also provided with a joint portion that has I shape joint groove on adjusting nut's upside promptly to the joint is on the bottom opening of installation cavity, also can realize adjusting nut and the bottom open-ended rotatable coupling of installation cavity through ball bearing, and plays spacing effect on the bottom opening.
One end of the adjusting strut 152 is disposed in the mounting chamber 121 and is screwed with the adjusting nut 151; specifically, a limiting rod 122 is disposed in the mounting chamber 121, and a lower end of the limiting rod 122 is inserted into an end portion of the adjusting support 152 located in the mounting chamber 121 and movably connected with the adjusting support 152. For example, a mounting notch matched with the limiting rod is arranged at the top end of the adjusting support column, and the limiting rod is mounted in the mounting notch in a limiting way. In the process of screwing the adjusting nut, the adjusting support column and the bottom of the tunnel are rubbed to enable the adjusting support column to have vertical relative displacement, namely, the adjusting nut can drive the adjusting support column and the adjusting nut to generate vertical displacement. In the actual installation process, the adjusting support is always abutted to the bottom of the tunnel, and the supporting beam can be displaced in the vertical direction by rotating the adjusting nut, so that the limiting rod moves towards the direction of the installation notch on the adjusting support.
Referring to fig. 1 and 4, each seal assembly 170 includes a fixture 171 and 2 seals.
The fixing member 171 is in an inverted U shape, and is disposed on the inner wall of the embedded bracket 100 to mount 2 sealing members.
The 2 sealing elements are respectively arranged on two vertical side walls of the fixing member 171 to play a role in sealing, so that the waterproof sealing performance in the tunneling and excavating process is enhanced. Specifically, each seal includes an elastic rubber plate 172, a movable pressure plate 173, and a pressing piece 174.
An included angle α is formed between one end of the elastic rubber plate 172 extending towards the tunnel depth direction and the fixed end thereof; the included angle alpha is 110-135 degrees, thereby forming two oblique elastic waterproof sealing layers.
One end of the movable pressing plate 173 extending in the tunnel depth direction is hinged to the fixed end thereof, and a clamp spring is arranged at the hinged end thereof. Through the clamp spring on the movable pressing plate, the movable end of the movable pressing plate is extruded towards the elastic inclined plane of the elastic rubber plate all the time so as to keep the inclination angle of the elastic rubber plate.
One end of the pressing member 174 passes through the movable pressing plate 173 and the elastic rubber plate 172 in sequence, and is detachably connected to the sidewall of the fixing member 171. The movable pressing plate and the elastic rubber plate are specified through the pressing piece, and the effect of installing and fixing the elastic waterproof sealing layer is achieved.
In the embodiment, the corresponding embedded support is jacked and supported by the jacking supporting mechanism, and the displacement is horizontally adjusted to match the corresponding tunnel wall position, so that the installation efficiency and accuracy of the embedded support are improved. The number of the jacking supporting mechanisms 200 is smaller than or equal to the number of the embedded supports 100, and after one embedded support is installed, the next embedded support can be installed, so that the number of the jacking supporting mechanisms is often smaller than that of the embedded supports in the actual construction process, and the plurality of jacking supporting mechanisms work simultaneously, so that the installation progress of the embedded supports can be accelerated.
Referring to fig. 1 and 5, the jacking leg mechanism 200 includes a support frame 210, a moving assembly 220, and a lifting assembly 230.
The top of the supporting frame 210 is provided with 2 sliding rails 211, and the moving assembly 220 is movably mounted on the sliding rails 211 and moves along the sliding rails 211 to adjust the displacement of the top beam along the depth direction of the tunnel.
The lifting assembly is used for supporting and jacking the top beam, so that the top beam has displacement in the longitudinal direction. Specifically, the lift assembly 230 includes 2 telescopic arms 231, a support grid 232, and an arm cylinder 233.
The 2 telescopic arms 231 are rotatably mounted on the moving assembly 220 and used for lifting the embedded bracket 100.
The arm cylinder 233 is disposed at one side of the telescopic arm 231; the corresponding telescopic arm is rotationally adjusted through the support arm oil cylinder, and the corresponding telescopic arm is supported in an auxiliary mode, so that the stability and the safety of the lifting assembly in the jacking supporting process are improved. Specifically, each arm cylinder 233 has one end hinged to the moving assembly 220 and the other end hinged to the telescopic arm 231.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-safety civil engineering tunnel support is characterized by comprising a plurality of pre-buried supports (100) and a plurality of jacking supporting mechanisms (200),
the embedded supports (100) are paved in the tunnel at intervals along the depth direction of the tunnel;
the jacking supporting mechanism (200) is arranged at the lower side of the corresponding embedded bracket (100) and is used for adjusting the displacement of the embedded bracket (100);
a plurality of longitudinal beams (160) are arranged on the top wall of the embedded support (100), a plurality of first anchor rods (161) are arranged on each longitudinal beam (160), and the first anchor rods (161) are arranged on the corresponding longitudinal beams (160) along the depth direction of the tunnel;
a circle of sealing assembly (170) is arranged on the inner side wall of the embedded support (100), and each sealing assembly (170) extends towards the depth direction of the tunnel.
2. High-safety civil engineering tunnel support according to claim 1, characterised in that the pre-buried support (100) comprises:
a top beam (110) arranged at the top of the tunnel;
support beams (120) provided on both sides of the top beam (110);
one end of each supporting beam (120) is provided with a plurality of connecting ribs (130), and the supporting beams are detachably connected with the end part of the top beam (110) through the connecting ribs (130).
3. High-safety civil engineering tunnel support according to claim 2, characterized in that a cross beam (140) is arranged on the lower side of the top beam (110), and the two ends of the cross beam (140) are respectively detachably connected with the two side walls of the top beam (110);
the cross beam (140) is provided with a plurality of reinforcing beams (141) extending towards the top beam (110), one end of each reinforcing beam (141) is hinged with the cross beam (140), and the other end of each reinforcing beam is detachably connected with the top beam (110).
4. The civil engineering tunnel support with high safety as claimed in claim 2, wherein the top beam (110) is provided with a plurality of through holes (111) at both ends, one end of each connecting rib (130) is hinged with the corresponding supporting beam (120), and the other end is inserted into the corresponding through hole (111).
5. High-safety civil engineering tunnel support according to claim 2, characterised in that a second anchor bar (131) is sleeved on each connecting rib (130), each second anchor bar (131) being rotatably connected with the connecting rib (130).
6. High-safety civil engineering tunnel support according to claim 2, characterised in that the bottom of the supporting beam (120) is provided with a mounting chamber (121), in which mounting chamber (121) is provided an adjustment fastener (150), the adjustment fastener (150) comprising:
an adjusting nut (151) disposed at a bottom opening of the mounting chamber (121);
an adjusting strut (152) having one end disposed in the mounting chamber (121) and screwed with the adjusting nut (151);
the adjusting nut (151) is rotatably connected with the bottom opening of the mounting chamber (121);
a limiting rod (122) is arranged in the mounting cavity (121), and the limiting rod (122) is inserted into the end part of the adjusting support column (152) in the mounting cavity (121) and movably connected with the adjusting support column (152).
7. High-safety civil engineering tunnel support according to claim 1, characterised in that each sealing assembly (170) comprises:
the fixing piece (171) is in an inverted U shape and is arranged on the inner wall of the embedded bracket (100);
2 sealing elements which are respectively arranged on two side walls of the fixing element (171); each of the seals includes: an elastic rubber plate (172), a movable pressing plate (173) and a pressing piece (174);
an included angle alpha is formed between one end of the elastic rubber plate (172) extending towards the depth direction of the tunnel and the fixed end of the elastic rubber plate;
one end of the movable pressing plate (173) extending towards the depth direction of the tunnel is hinged with the fixed end of the movable pressing plate, and a clamp spring is arranged on the hinged end of the movable pressing plate;
one end of the pressing piece (174) sequentially penetrates through the movable pressing plate (173) and the elastic rubber plate (172) and is detachably connected with the side wall of the fixing piece (171).
8. The high-safety civil engineering tunnel support according to claim 7, wherein the size of the included angle α is 110 ° to 135 °.
9. High-safety civil engineering tunnel support according to claim 1, characterized in that the number of jacking and supporting mechanisms (200) is less than or equal to the number of pre-buried supports (100).
10. High safety civil engineering tunnel support according to claim 1, characterised in that the jacking support mechanism (200) comprises a support frame (210), a moving assembly (220) and a lifting assembly (230);
the top of the support frame (210) is provided with a slide rail (211), and the moving assembly (220) is movably arranged on the slide rail (211);
the lifting assembly (230) comprises:
the 2 telescopic arms (231) are rotatably arranged on the moving assembly (220) and used for lifting the embedded bracket (100);
the supporting grid plate (232) is arranged at the top ends of the 2 telescopic arms (231) and is hinged with the 2 telescopic arms (231); and
a support arm oil cylinder (233) arranged on one side of the telescopic arm (231);
one end of each support arm oil cylinder (233) is hinged with the moving assembly (220), and the other end of each support arm oil cylinder is hinged with the telescopic arm (231);
the supporting grid plate (232) is detachably connected with the embedded support (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010443251.2A CN111577320B (en) | 2020-05-22 | 2020-05-22 | High security civil engineering tunnel support |
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| CN202010443251.2A CN111577320B (en) | 2020-05-22 | 2020-05-22 | High security civil engineering tunnel support |
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| CN111577320B CN111577320B (en) | 2022-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682074A (en) * | 2021-01-19 | 2021-04-20 | 中铁九局集团有限公司 | Tunnel waterproof structure and construction method thereof |
| CN113622942A (en) * | 2021-08-05 | 2021-11-09 | 山东高速工程建设集团有限公司 | Supporting device for tunnel construction |
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| WO2008009344A2 (en) * | 2006-06-30 | 2008-01-24 | Skumtech As | Fastening of plastic film and precast concrete parts to anchors |
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| CN208650862U (en) * | 2018-07-31 | 2019-03-26 | 中交基础设施养护集团有限公司 | A kind of anti-collapse suspension device of constructing tunnel |
| CN110331996A (en) * | 2019-07-09 | 2019-10-15 | 山东科技大学 | The purely mechanic semi-automatic mobile laneway temporary support device of one kind and working method |
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| CN112682074A (en) * | 2021-01-19 | 2021-04-20 | 中铁九局集团有限公司 | Tunnel waterproof structure and construction method thereof |
| CN112682074B (en) * | 2021-01-19 | 2023-01-20 | 中铁九局集团有限公司 | Tunnel waterproof structure and construction method thereof |
| CN113622942A (en) * | 2021-08-05 | 2021-11-09 | 山东高速工程建设集团有限公司 | Supporting device for tunnel construction |
| CN113622942B (en) * | 2021-08-05 | 2024-05-03 | 山东高速工程建设集团有限公司 | Supporting device for tunnel construction |
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