CN102562097A - Three-dimensional asymmetrical supporting system - Google Patents

Three-dimensional asymmetrical supporting system Download PDF

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Publication number
CN102562097A
CN102562097A CN2012100202381A CN201210020238A CN102562097A CN 102562097 A CN102562097 A CN 102562097A CN 2012100202381 A CN2012100202381 A CN 2012100202381A CN 201210020238 A CN201210020238 A CN 201210020238A CN 102562097 A CN102562097 A CN 102562097A
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CN
China
Prior art keywords
support
dimensional
steel tube
concrete
tunnel
Prior art date
Application number
CN2012100202381A
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Chinese (zh)
Inventor
李为腾
李术才
王�琦
李智
王德超
王洪涛
王汉鹏
江贝
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山东大学
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Application filed by 山东大学 filed Critical 山东大学
Priority to CN2012100202381A priority Critical patent/CN102562097A/en
Publication of CN102562097A publication Critical patent/CN102562097A/en

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Abstract

The invention relates to a three-dimensional asymmetrical supporting system, which comprises a plurality of steel tube concrete single racks. The steel tube concrete single racks are connected together via longitudinal connecting beams to form a support in the shape of a tunnel in an encircling manner, a metal screen is laid between the support and a surrounding rock of the tunnel, anchor cable holes are distributed on the longitudinal connecting beams, anchor cables penetrate through the anchor cable holes of the longitudinal connecting beams and the metal screen to outwards extend, and simultaneously anchor rods are arranged in the surrounding rock of the tunnel according to designed inter-row spaces. The three-dimensional asymmetrical supporting system has the advantages that pertinence and supporting ability are high, the structure is simple, devices are connected conveniently, protecting surface area is large, stability is good and stress is reasonable in coordination.

Description

Three-dimensional asymmetric support system
Technical field
The present invention relates to a kind of deep engineering support system, relate in particular to a kind of three-dimensional asymmetric support system that is used for deep tunnel.
Background technology
Along with The development in society and economy, building of underground rock engineering such as coal mine roadway, road and rail tunnel and large hydropower station is more and more, and the situation of deep tunnel that is faced and the big buried depth of chamber crowd, big section also increases gradually.Geostatic stress increases, and water leakage strengthens, and the characteristic of ground temperature rise is obvious, and deep soft rock and joint fragmented rock body supporting difficulty increase day by day., supporting difficult characteristics big to the deep-well tunnel distortion; Support pattern to deep high stressed soft rock large section roadway has carried out particular study both at home and abroad; Experienced from common bolt-spary supports, sprayed steel fibre supporting, flexible steel bracket supporting, but the effect of these support forms not very desirable to forms such as spray of anchor net and flexible steel bracket combined supportings.
Deep tunnel asymmetrical deformation destruction problem highlights; Especially have complicated chambers such as obvious angle, tilted stratum, geological structure influence area, gob side entry, shaft station, ingate and receive under the situation such as the tangible soft-rock tunnel of influence on groundwater at biggest principal stress direction and horizontal plane, deformation of the surrounding rock in tunnel demonstrates tangible non-symmetrical features.In recent years; Research to this problem is actually rare; The correlative study that the asymmetrical deformation of deep tunnel destroys is also very immature, and Shang Weijian destroys the comparatively systematic research of supporting mechanism and supporting countermeasure aspect to the deformation of the surrounding rock in tunnel under the stress effect asymmetricly.
On the whole; The asymmetric large deformation that tunnel and chamber crowd show under deep high stressed soft rock and fragmented rock body condition; Difficult supporting problem; Adopt support pattern commonly used at present to carry out supporting, be difficult to satisfy deep high stress tunnel and chamber crowd's supporting needs, had a strong impact on the production and the safety of deep rock mass engineering project.
Summary of the invention
The objective of the invention is to not enoughly and provide a kind of three-dimensional asymmetric support system to prior art, this system is with strong points, and support capacity is strong, and is simple in structure, install easy to connectly, and it is big to protect surface area, good stability, reasonable stress coordination.Be applicable to various tunnels and chamber crowd's supporting, be particularly useful for the supporting in asymmetrical deformation tunnel, deep.
The technical scheme that the present invention takes is:
Three-dimensional asymmetric support system comprises a plurality of concrete filled steel tube list framves, and this list frame is closed generally speaking; Special circumstances also can be designed to the single frame of non-closure; A plurality of concrete filled steel tube list framves link together through vertical tie-beam and surround the support of roadway shape, are equipped with wire lath between support and the roadway surrounding rock, vertically are furnished with the anchor cable hole on the tie-beam; Anchor cable hole and wire lath that anchor cable passes vertical tie-beam stretch out, and in roadway surrounding rock, are installed on anchor pole by array pitch between design simultaneously.
Described concrete filled steel tube list frame is made up of the inner concrete of loading of square-section hollow steel pipe.The square-section hollow steel pipe is coupled together through the support node by plurality of sections of steel pipes, is convenient to transportation, moves, and support process is simple, practical.Concrete filled steel tube list frame is generally annular, stalk arch or the shape of a hoof.
Described square-section hollow steel pipe tube wall has injected hole and steam vent.
The support unit arrangement of the asymmetric support system of described three-dimensional is designed to asymmetrical according to concrete engineering geological conditions.Sectional dimension and the intensity and toughness that mainly is meant layout and gauge size, the concrete filled steel tube list frame of anchor pole and anchor cable is designed to asymmetrical, the local reinforcement, and weaken the part.
Described concrete is an expansive concrete.
Described vertical tie-beam is the girder steel of a kind of section form for " II " shape, is connected with concrete filled steel tube list frame through vertical node.
Described anchor pole is high-strength pretightning force anchor pole, makes anchor pole produce the extruding pocket to country rock through pretightning force and protects effect.
Described anchor cable is high-strength pretightning force anchor cable, and the anchor cable hole of passing vertical tie-beam anchors in the country rock, makes anchor cable produce the extruding pocket to country rock through pretightning force and protects effect.
The asymmetric support system of three-dimensional of the present invention, owing to comprise concrete filled steel tube list frame, vertical tie-beam, anchor pole, anchor cable and wire lath, for surrounding rock supporting provides a kind of high rigidity and high strength structure; While can be arranged to vertical tie-beam, anchor pole and anchor cable asymmetrical according to concrete geological conditions, and is at reinforced support in key position, pointed strong; Support capacity is strong, and is simple in structure, installs easy to connect; It is big to protect surface area, the advantage that good stability and reasonable stress are coordinated.
Owing to be provided with vertical tie-beam, make support system form the three-dimensional supporting and protection structure in space, can effectively prevent axial the toppling along the tunnel of concrete-filled rectangular steel tube support on the other hand for country rock provides three-dimensional supporting power on the one hand.
The steel tube section of said concrete filled steel tube list frame is a rectangle; Compare with the cylindrical outer shape steel pipe; Rectangular steel pipe has following remarkable advantage: 1. can contact closely, have the bigger surface area that protects relatively with scar, 2. be convenient between each pipe fitting and the assembling between the tubing string be connected; 3. be convenient to be used, strengthen the supporting intensity of support overlying rock with members such as prestress anchorage cable, pallets.
The three-dimensional asymmetric support system of the present invention is applicable to various tunnels and chamber crowd's supporting, is particularly useful for the supporting in asymmetrical deformation tunnel, deep.
Description of drawings
Fig. 1 is the structural representation (elevation) of the three-dimensional asymmetric support system of the present invention;
Fig. 2 is the structural representation (lateral view) of the three-dimensional asymmetric support system of the present invention;
Fig. 3 is a square-section concrete filled steel tube list frame cross sectional representation.
Marginal data: 1-concrete filled steel tube list frame; The vertical tie-beam of 2-; The 3-anchor pole; The 4-anchor cable; The 5-wire lath; 6-support node; 7-longeron node; The 8-tunnel; 9-square-section hollow steel pipe; The 10-concrete; The 11-injected hole; The 12-steam vent.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further specified.
Like Fig. 1-2; Three-dimensional asymmetric support system; Comprise a plurality of concrete filled steel tube list framves 1 (be closed generally speaking, special circumstances also can be designed to the single frame of non-closure), a plurality of concrete filled steel tube list framves 1 link together through vertical tie-beam 2 and surround the support of tunnel 8 shapes; Be equipped with wire lath 5 between support and the roadway surrounding rock; Vertically be furnished with the anchor cable hole on the tie-beam 2, anchor cable hole and wire lath 5 that anchor cable 4 passes vertical tie-beam 2 stretch out, and in roadway surrounding rock, are installed on anchor pole 3 by array pitch between design simultaneously.
Concrete filled steel tube list frame is made up of the square-section hollow steel pipe 9 inner concrete 10 of loading.Shown in Figure 3, square-section hollow steel pipe 9 is coupled together through the support node by plurality of sections of steel pipes.Described square-section hollow steel pipe 9 tube walls have injected hole 11 and steam vent 12.
Behind 8 excavations of tunnel, at first wire lath 5 is laid on 8 surfaces in the tunnel, and skyhook 3 then, anchor in the country rock through the anchoring agent, and apply pretightning force; Install concrete filled steel tube list frame 1 then, on concrete filled steel tube list frame 1, install vertical tie-beam 2, vertically on the tie-beam 2 anchor cable 4 is being installed, and is being applied pretightning force, form the 3 D stereo support system through longeron node 7.
Concrete filled steel tube list frame 1; At first more piece square-section hollow steel pipe 9 is connected to semicircle domes of the closed shallow end through support node 6; Concrete 10 is loaded in the inside of square-section hollow steel pipe 9, has injected hole 11 on the concrete filled steel tube list frame sidepiece tube wall, has steam vent 12 on the top tube wall of concrete filled steel tube list frame; It is inner that coagulating agents such as concrete inject hollow body through injected hole 11, and gas is discharged from steam vent 12.
Decide according to tunnel 8 residing concrete geological conditions the concrete packing density and the position of support units such as concrete filled steel tube list frame 1, vertical tie-beam 2, anchor pole 3, anchor cable 4; At the supporting reinforced support in key position, form pointed three-dimensional asymmetric support system.
The pretightning force of anchor pole 3, anchor cable 4 can produce support action initiatively to roadway surrounding rock; Concrete filled steel tube list frame 1 can produce powerful support action radially to country rock; Vertically tie-beam 2 interconnects concrete-filled rectangular steel tube support 1, produces interaction force longitudinally, prevents that effectively concrete filled steel tube list frame 11 from producing axial the toppling along the tunnel; The effectively distortion of control roadway surrounding rock axial direction along the tunnel forms the three-dimensional control action to roadway surrounding rock simultaneously.
Concrete filled steel tube list frame 1 utilizes square-section hollow steel pipe 9 and the interaction of concrete 10 in loading process that concrete 10 is under the three-dimensional compression chord state, thereby the intensity of concrete 10 is improved, and plasticity and toughness properties are greatly improved.Because square-section hollow steel pipe 9 can avoided or delay to the effect of concrete 10 cripling taking place, thereby guarantees giving full play to of material property simultaneously.
The above; Be merely the preferable specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any technician who is familiar with the present technique field is in the technical scope that the present invention discloses; The variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.

Claims (6)

1. three-dimensional asymmetric support system is characterized in that, comprises a plurality of concrete filled steel tube list framves; Single frame is closed or non-closure; A plurality of concrete filled steel tube list framves link together through vertical tie-beam and surround the support of roadway shape, are equipped with wire lath between support and the roadway surrounding rock, vertically are furnished with the anchor cable hole on the tie-beam; Anchor cable hole and wire lath that anchor cable passes vertical tie-beam stretch out, and in roadway surrounding rock, are installed on anchor pole by array pitch between design simultaneously.
2. the asymmetric support system of three-dimensional according to claim 1 is characterized in that, described concrete filled steel tube list frame is made up of the inner concrete of loading of square-section hollow steel pipe.
3. the asymmetric support system of three-dimensional according to claim 1 is characterized in that, described concrete filled steel tube list frame is annular, stalk arch or the shape of a hoof.
4. the asymmetric support system of three-dimensional according to claim 2 is characterized in that described square-section hollow steel pipe is coupled together through the support node by plurality of sections of steel pipes.
5. the asymmetric support system of three-dimensional according to claim 2 is characterized in that, described square-section hollow steel pipe tube wall has injected hole and steam vent.
6. the asymmetric support system of three-dimensional according to claim 1 is characterized in that, described vertical tie-beam is the girder steel of a kind of section form for " II " shape.
CN2012100202381A 2012-01-30 2012-01-30 Three-dimensional asymmetrical supporting system CN102562097A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852533A (en) * 2012-10-18 2013-01-02 山东大学 High-strength three-dimensional support system of yielding type restriction concrete lagging jack
CN102877862A (en) * 2012-10-18 2013-01-16 山东大学 Confined concrete quantitative yielding lagging jack based on mine U-shaped steel
CN102913254A (en) * 2012-11-01 2013-02-06 济南城建集团有限公司 Concrete-filled steel tube supporting structure, preparation and installation method, and application
CN103422869A (en) * 2013-08-22 2013-12-04 山东科技大学 Jet grouting and anchoring comprehensive construction method of soft rock tunnel
CN103470278A (en) * 2013-09-13 2013-12-25 山东科技大学 Rectangular-section steel-encased concrete support
CN103512805A (en) * 2013-10-22 2014-01-15 安徽理工大学 Pressurizing device for anchor rod pull-out test for simulating surrounding rock stress of anchoring body
CN103775106A (en) * 2014-01-27 2014-05-07 华南理工大学 Structure for reinforcing tunnel by utilizing arch rings and method for reinforcing tunnel
CN104153792A (en) * 2014-07-24 2014-11-19 山东大学 Energy-absorption yield tunnel support system and method suitable for weak broken wall rock
CN104265322A (en) * 2014-09-23 2015-01-07 山东科技大学 Control method of asymmetric deformation of deep mine roadway surrounding rock
CN106801611A (en) * 2015-11-26 2017-06-06 山东科技大学 A kind of deep tunnel supporting new concrete support
CN107461214A (en) * 2016-12-15 2017-12-12 山东科技大学 A kind of asymmetric country rock tunnel balance supporting design method
CN108049891A (en) * 2017-12-08 2018-05-18 东北大学 For building the rectangular steel pipe support system of underground engineering with shallow and its construction method
CN110486069A (en) * 2019-09-10 2019-11-22 华北科技学院 A kind of high working face coal wall caving control structure and construction equipment based on flexibility reinforcing

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JPH09217594A (en) * 1996-02-13 1997-08-19 Fujita Corp Timbering method for tunnel
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CN202500581U (en) * 2012-01-30 2012-10-24 山东大学 Three-dimension asymmetric supporting system

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JPH09217594A (en) * 1996-02-13 1997-08-19 Fujita Corp Timbering method for tunnel
CN102226407A (en) * 2011-05-23 2011-10-26 中铁二院工程集团有限责任公司 Four-line large-span tunnel cable-arch combined primary support structure
CN202500581U (en) * 2012-01-30 2012-10-24 山东大学 Three-dimension asymmetric supporting system

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877862A (en) * 2012-10-18 2013-01-16 山东大学 Confined concrete quantitative yielding lagging jack based on mine U-shaped steel
CN102852533A (en) * 2012-10-18 2013-01-02 山东大学 High-strength three-dimensional support system of yielding type restriction concrete lagging jack
CN102913254B (en) * 2012-11-01 2015-05-20 济南城建集团有限公司 Concrete-filled steel tube supporting structure, preparation and installation method, and application
CN102913254A (en) * 2012-11-01 2013-02-06 济南城建集团有限公司 Concrete-filled steel tube supporting structure, preparation and installation method, and application
CN103422869A (en) * 2013-08-22 2013-12-04 山东科技大学 Jet grouting and anchoring comprehensive construction method of soft rock tunnel
CN103470278A (en) * 2013-09-13 2013-12-25 山东科技大学 Rectangular-section steel-encased concrete support
CN103512805B (en) * 2013-10-22 2015-12-30 安徽理工大学 A kind of pressue device of simulating the anchor rod drawing experiment of anchoring body surrouding rock stress
CN103512805A (en) * 2013-10-22 2014-01-15 安徽理工大学 Pressurizing device for anchor rod pull-out test for simulating surrounding rock stress of anchoring body
CN103775106A (en) * 2014-01-27 2014-05-07 华南理工大学 Structure for reinforcing tunnel by utilizing arch rings and method for reinforcing tunnel
CN104153792A (en) * 2014-07-24 2014-11-19 山东大学 Energy-absorption yield tunnel support system and method suitable for weak broken wall rock
CN104265322A (en) * 2014-09-23 2015-01-07 山东科技大学 Control method of asymmetric deformation of deep mine roadway surrounding rock
CN104265322B (en) * 2014-09-23 2017-02-01 山东科技大学 Control method of asymmetric deformation of deep mine roadway surrounding rock
CN106801611A (en) * 2015-11-26 2017-06-06 山东科技大学 A kind of deep tunnel supporting new concrete support
CN107461214A (en) * 2016-12-15 2017-12-12 山东科技大学 A kind of asymmetric country rock tunnel balance supporting design method
CN108049891A (en) * 2017-12-08 2018-05-18 东北大学 For building the rectangular steel pipe support system of underground engineering with shallow and its construction method
CN110486069A (en) * 2019-09-10 2019-11-22 华北科技学院 A kind of high working face coal wall caving control structure and construction equipment based on flexibility reinforcing

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Application publication date: 20120711