CN1163660C - Reinforcing bar netted chock and netted-shell bolting and shotcrete support - Google Patents
Reinforcing bar netted chock and netted-shell bolting and shotcrete support Download PDFInfo
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- CN1163660C CN1163660C CNB001191012A CN00119101A CN1163660C CN 1163660 C CN1163660 C CN 1163660C CN B001191012 A CNB001191012 A CN B001191012A CN 00119101 A CN00119101 A CN 00119101A CN 1163660 C CN1163660 C CN 1163660C
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Abstract
The present invention relates to a reinforcing bar netted-shell chock and a netted-shell bolt-spray support, which belongs to the technical field of the supports of mine tunnels and tunnels. The present invention solves the technical problems of supporting the mine tunnel by a space netted-shell structure and reinforcing thin concrete lining, greatly reduces supporting cost and increases supporting capacity. The technology is mainly characterized in that a netted-shell structural object in an arched plate shape or in a flat plate shape with connecting plates at both ends welded by reinforcing bars is used as a chock component; a plurality of components are connected into a chock by screw bolts; chocks are continuously assembled. The chocks not only can independently support general mine tunnels, but also can support soft rock tunnels and large cross-section tunnels by combining with bolting rods and spraying layers into netted-shell bolt-spray structures.
Description
Invention field
The invention belongs to the engineering construction technical field, it relates to a kind of steel mesh reinforcement shell support that is used for lane, supporting mine and tunnel, the invention still further relates to a kind of wire-shell bolting shotcrete supporting method with anchor pole, steel mesh reinforcement shell support and the common supporting weak surrounding rock of sprayed mortar.
Background technology
When in soft stratum, building mine working, because geostatic pressure row, the stability of braced structures and supporting capacity need to strengthen significantly, colliery Deep Soft Rock Tunnel for example, the enabling capabilities of anchor net spray supporting and protection structure commonly used is significantly not enough, generally adds shape steel bracket again with the anchor spray or wall rock grouting or long anchor cable etc. carry out combined supporting.Similar situation is also arranged in the construction of tunnel.Like this, the supporting work post extends and expense must increase considerably, and the supporting operation is also complicated.Another kind of technology path is the supporting and protection structure lightness, and as the development and the application of reinforcing bar lattice support, it is the laced beam arch structure thing that is welded into reinforcing bar, has alleviated weight support frame, has reduced the support cost.Former West Germany develops this support nineteen eighty-three, and is applied in West Germany, Austria, Switzerland tunnel and subway engineering and (sees Braum, W.M (1983).Lattice?Girders?Offer?Economy?AndPerformance?For?Tunnel?Support?Tunnels?&?Tunnelling，May，15/5，19-22)。China uses reinforcing bar lattice support to make the cage of reinforcement of first lining cutting the eighties (to see 1987 (4) first in the Beijing Metro engineering, ≤ tunnel construction 〉=, the development of large span lattice steel bow member structure is identified by office's level with application), then in railway and highway tunnel engineering, also be applied.To the nineties, this kind form of structure is also used (see that Pang Jun is brave etc., the research of tunnel support technology in the bad rock stratum of the region of high stress, the northeast colliery engineering, 1994, NO 4,18/13) to some extent in the rock roadway in coal mine road, and its form of structure never has big variation.
Though reinforcing bar lattice support has lightweight advantage, has weakened the stability of support simultaneously, cause whole unstability because of local distortion easily.This has limited its range of application greatly, generally its frame of putting more energy into of making spray-up is only arranged, but concrete is still the vulnerable area of supporting, integrated support limited ability system between frame, be difficult to bear strong deformation ground and press, therefore do not have widely-usedly at the coal-mine soft-rock roadway engineering.The effective way that overcomes reinforcing bar lattice support shortcoming is that it is developed into underground latticed shell structure, the advantage light when keeping it heavy, that rolled steel dosage is few, and the spatial stability and the supporting capacity that add improve greatly.
Summary of the invention
The objective of the invention is to each several parts such as coupling bar between the camber of common metal support, wire lath, frame are merged the space net shell structure of forming integral body, be designed to light-duty steel mesh reinforcement mould component, in order to form steel mesh reinforcement shell support, its stability and supporting capacity obviously strengthen than canopy formula reinforcing bar lattice support, the general mine working of supporting separately, the supporting expense is than using shaped steel muscle support to reduce significantly, also be fit to form the wire-shell bolting shotcrete structure by itself and anchor pole, sprayed mortar, pressure soft rock tunnel, supporting highland, workings subject to dy namic pressure and tunnel etc.
The basic building block of steel mesh reinforcement shell support is the arc plate shape net mould component 1 and plate shaped net mould component 2 that reinforcing bar is welded into.The both sides of every Pin member are that the gusset piece 3 of 3-5 bolt hole is made and had to the frame 20, two of the lattice formed of reinforcing bar for the steel plate plate, are carriage with lattice frame and two steel plate, are supporting the double steel bar net of inside.Its outer reinforcement net 9 is arc surfaced or planar shaped graticules, can be directly and the surface, tunnel fit, internal layer steel mesh reinforcement 10 is the continuous arch nets of arch net or multiple spurs, by it my layer steel mesh reinforcement is carried in the span of arch and being supported.The reinforcing bar in length and breadth of double steel bar net and interlayer bearing rod etc. are in space crossed combination, form numerous little spans space bow member, and link each other and form stable housing, can bear three-dimensional load and dynamic load, adding it is the stronger supporting frame of rigidity all around, thereby every Pin structure has stability and all stronger three dimensional support structure of enabling capabilities of one's own.
Every steel mesh reinforcement shell support is by the correct assembly unit of the above-mentioned net mould component of 3-6 Pin, form with Bolt Connection.Itself has certain flexible yielding property energy, in addition, can also embed wooden or rubber mat plate at the member place of connecing, and makes support that certain contractibility also be arranged.That the profile of support can be is trapezoidal, arch, sealing water chestnut arch or circle etc., selects for use arc plate shape net shell net mould component or plate shaped net mould component to assemble according to the drift section shape.The external surface of support directly is adjacent to the surface, tunnel, does not need to establish backboard or steel mesh reinforcement in addition, should use sprayed mortar or other charges to tamp but super sky digs the crack.Assembly unit continuously do not need to set up connector between frame, thereby its installation procedure is simpler than metal shed between frame and the frame.Simultaneously, it is again continuous support, and resistance to overturning and enabling capabilities are stronger, medium stable reaching under the more unsettled wall rock condition, and can be separately in order to one mine working of supporting.
When formation condition is very poor, the common anchor spray can be constituted jointly the wire-shell bolting shotcrete structure with steel mesh reinforcement shell support, carry out roadway support, its composition mode and common anchor net spray supporting are similar, that is carry out initial support with anchor stalk, continous way steel mesh reinforcement shell support and thin spray-up earlier, spray a layer concrete subsequently again steel mesh reinforcement shell support is covered, finish permanent support.The difference of wire-shell bolting shotcrete supporting and common anchor net spray supporting is: first, increased substantially the support force of initial support, when the flexibility of utilizing steel mesh reinforcement shell support self discharges a part of surrouding rock deformation, provide uniformly powerful to the country rock surface again and support, can prevent wall rock loosening and lose globality; Second, after the multiple pneumatically placed concrete, spray-up is that fragment packets is trapped among within numerous little span space net shells, what concrete was suffered draws shear stress little, intensity can be given full play to, toughness strengthens to some extent, but the reducer coupling head of support makes spray-up that certain contractibility also be arranged simultaneously, presses and presses with adopting thereby make spray-up can bear the shifting ground.
The technology of steel mesh reinforcement shell support and wire-shell bolting shotcrete supporting realizes, key is that its arc pulls the form of structure of shape net mould component 1 and plate shaped net mould component 2.In order to make support be easy to processing and manufacturing, and can adapt to the supporting needs of different roadway engineering conditions, the invention provides four kinds of latticed shell structure forms, be respectively described below:
Light-duty inner bearing type net mould component.The outer reinforcement net 9 of this part kind net mould component is by straight section horizontal-associate muscle 14 welding formings of four vertical iliacus 12 with some equidistant placement.Internal layer steel mesh reinforcement 10 by two chord members 11 add two interior iliacus 13, with arc horizontal-associate muscle 15 welding formings of some equidistant placement.The longitudinal reinforcement of arc plate shape net shell all curves circular arc, and the longitudinal reinforcement of plate shaped net shell all is straight muscle; Chord member 11 constitutes the side of steel mesh reinforcement 10, and its spacing is slightly larger than two vertical bone rebar spacings of steel mesh reinforcement 9 sides; Two interior iliacus are positioned at horizontal arch middle part, its spacing is slightly less than steel mesh reinforcement 9 middle parts two vertical iliacus spacings, and arc horizontal-associate spacing equates with the straight section horizontal-associate muscle spacing of steel mesh reinforcement 9.The assembling mode of net shell is, with four zigzag setback muscle 16 steel mesh reinforcement 9 supports are stood in steel mesh reinforcement 10 tops, make internal layer arc horizontal-associate and outer straight section horizontal-associate muscle position staggered up and down, the node of internal layer steel mesh reinforcement and the node of outer reinforcement are about the space becomes, crisscrossly arrange arrangement, every setback muscle becomes just in time can carry over a pair of longitudinal reinforcement up and down, laterally tiltedly upright with the node corresponding welding of increment with steel mesh reinforcement, respectively weld a gusset piece 3 at net shell two ends then, constitute a Pin arc plate shape or a plate shaped support element.The design feature of this kind net shell is that the every side of member is a chord member, a vertical iliacus.And the two purlin formula lattice frames 20 formed of setback muscle, simultaneously, the support of the profile of tooth of four setback muscle is stood into numerous little span space frames to horizontal-associate muscle frame up and down, and is connected into whole space net shell by longitudinal reinforcement.The spatial stability of member is good, certain supporting capacity is arranged, but flexibility is stronger, is suitable for forming the falsework of general mine working and the cage of reinforcement of spray-up.Reinforced inner bearing type net mould component.The outer reinforcement net 9 of this kind net shell is by straight section horizontal-associate muscle 14 welding formings of the vertical iliacus 12 of the six roots of sensation with some equidistant placement, internal layer steel mesh reinforcement 10 still by two chord members 11 add two interior iliacus 13, with arc horizontal-associate muscle 15 welding formings of some equidistant placement, but the chord member spacing reduces, it is horizontal wide by 4/5 to make the horizontal span of arch equal steel mesh reinforcement 9, its two interior iliacus still are configured in horizontal arch middle part, and the spacing of the two vertical iliacus in gap ratio steel mesh reinforcement 9 middle parts is smaller.With six roots of sensation zigzag setback muscle 16 steel mesh reinforcement 9 is supported on steel mesh reinforcement 10 tops, makes chord member 11 just in time be arranged in the below of each two vertical root iliacus of outer both sides; The position of each arc horizontal-associate muscle and straight section horizontal-associate muscle is handed over anchor up and down, and the node of inside and outside two-layer steel mesh reinforcement is about the space becomes, hand over anchor to arrange in length and breadth.The configuration mode of setback muscle is: stand between interior iliacus 13 and the outer middle two vertical iliacus with two setback muscle framves, it is one group with two setback muscle in addition, to descend increment in twos and close and be welded on the chord member, the horizontal held separate of last increment two vertical iliacus of outer every side.The pad of each setback muscle overlaps with the node of double steel bar net all accordingly.A gusset piece 3 is still respectively welded at two ends at the net shell, forms a Pin arc plate shape or a plate shaped support element.The design feature of this kind net shell and light-duty inner bearing type net shell are similar substantially, that is within frame.Reinforcing bar in length and breadth and four setback muscle cross-join by the double steel bar net form numerous little span space frames, and link each other and form space net shell, the difference of it and light-duty inner bearing type net shell shell is: the horizontal span of arch of net shell reduces, it is the lattice frame 20 of del that every side of dawn has respectively been formed cross section by a chord member, two vertical iliacus and two setback muscle, thereby the stability of member each several part is all strengthened, can increase substantially the supporting capacity of member, can be in order to form steel mesh reinforcement shell support, extremely unstable mine working of supporting and large cross-section tunnel etc.
Light-duty coupling formula net mould component.The characteristics of this kind net shell are: add that with 14,1 arc horizontal-associate muscle 15 of 1 straight section horizontal-associate muscle two V muscle 17 are one group, give and make one pair of flat bridge shape frame 18, its V-arrangement muscle is welded in the straight-bar two ends as the bridge leg, arched ribs is welded between two legs, and will encircle the stage casing of the stage casing of arc and straight-bar and close welding, with strengthen across rigidity.In addition, shape requirement by member prepares vertical iliacus 12 of the six roots of sensation and two chord members 11, during assembling net shell, earlier with two chord member location, thereon equidistant placement, laterally stride vertical position welding and connect some pairs of flat bridge shape framves, then the vertical iliacus of the six roots of sensation equidistantly is arranged on each flat bridge shape frame, is welded into the outer reinforcement net 9 of arc surfaced or planar shaped, so just formed the lattice frame 20 of internal layer steel mesh reinforcement 10 and member both sides simultaneously with the straight section cross bar.Its steel mesh reinforcement 10 is to be added outer middle two vertical iliacus, formed with each arc horizontal-associate muscle connection by two chord members, and coupling is associated in the middle part of steel mesh reinforcement 9, its lattice frame 20 by chord member add two vertical bones of outer every side, muscle by V-arrangement bridge leg frame upright and, the cross section is a del.Respectively weld a gusset piece 3 at last at net shell two ends and form a Pin support element.This net shell has saved interior iliacus and inner bay stud, but has strengthened the horizontal kiln crown of internal layer steel mesh reinforcement, thereby guarantees that the net shell still has good spatial stability and stronger three-dimensional supporting capacity.Can be in order to form steel mesh reinforcement shell support, the general mine working of supporting also can spray the associating use with common anchor, supporting soft-rock tunnel and pressure tunnel.
Light-duty multi-arch type net mould component.The composition of this kind net shell and light-duty coupling connection formula net shell are similar, that is earlier with straight section horizontal-associate muscle 14, arc horizontal-associate muscle 15 and V-arrangement muscle 17 give makes some pairs of plane crane span structures 18, per two V-arrangement muscle are as the bridge leg, be welded in the two ends of a straight section horizontal-associate muscle respectively, arc horizontal-associate muscle of welding between the bridge leg is to strengthen across the middle part support force.Its arc horizontal-associate muscle has two kinds of rises: a kind of rise is bigger, arch arc stage casing can be directly with straight section horizontal-associate muscle stage casing and close welding, another kind of rise is high half of bridge, welding two short sections are stood and are supportted side by side at arch arc middle part. supporting the stage casing of straight section horizontal-associate muscle.Longitudinal reinforcement still is the vertical iliacus 12 of the six roots of sensation and two chord members 11, and the interior iliacus 12 of arch is striden by two companies of curving of preparation that still need in addition.During assembling net shell, with two chord member location, equidistantly arrange thereon earlier, laterally stride vertical position welding and connect some pairs of flat bridge shape framves 18, and stand one pair low arch-shaped every two pairs high arch-shaped setting up.Then two companies are striden arch in-seam flaccidity of tendon and muscle between the horizontal arch that inserts each plane crane span structure, be welded into to connect with two kinds of arc horizontal-associate muscle of height and stride dome shape internal layer steel mesh reinforcement 10.Again the vertical iliacus of the six roots of sensation equidistantly is arranged on each flat bridge shape frame, be welded into outer reinforcement net 9 with straight section horizontal-associate muscle, and respectively weld a slice gusset piece 3 at net shell two ends, just having formed external surface is cambered surface or planar shaped steel mesh reinforcement, inner for even striding the dome net, both sides are three purlin formula lattice frames, and two ends have a Pin support element of gusset piece.This member not only spatial stability is strong, and utilizes the continuous dome net of little span fully to weaken the suffered flexural stress of reinforcing bar, and the supporting capacity of member is improved.It both can form steel mesh reinforcement shell support, an expansion mine working also is suitable for supportting afterwards earlier and sprays separately, utilizes numerous little span dome net shells to make concrete cage of reinforcement, increase substantially the enabling capabilities of spray-up, the extremely unstable tunnel of supporting, workings subject to dy namic pressure and large-section underground etc.
Above-mentioned steel mesh reinforcement shell support is compared with existing roadway support structure, has the following advantages:
1. the rolled steel dosage of support is few, and is in light weight, easy for installation, and under same engineering specifications, the supporting expense is than using shape steel bracket to fall
Low more than 40%.
2. the basic building block of support is made with the reinforcing bar weldering, structural seriesization, and material source is wide, is easy to processing, and general factories and miness can be processed system on the spot
Make.
3. the mechanical property of support is superior, and existing certain flexibility allows pressure energy, very strong spatial stability and enabling capabilities is arranged again, and be continuous
The space braced structures, mine working that can the various section configurations of supporting, large-section underground and tunnel etc.
4. steel mesh reinforcement shell support adds anchor pole and spray-up and forms the wire-shell bolting shotcrete structure, can weaken effectively spray-up suffered draw shear stress, fully send out
Wave concrete intensity, strengthen the toughness of spray-up, can press in order to the supporting highland.Roadway with large deformation and back production workings subject to dy namic pressure, and
Support process is simple, and the supporting expense can reduce significantly.
Description of drawings
Fig. 1 is a steel mesh reinforcement shell support phantom drawing;
Fig. 2 is shape of a hoof close-network shell bolt-spary supports structural plan figure;
Fig. 3 is light-duty inner bearing type net mould component vertical view;
Fig. 4 is light-duty inner bearing type net mould component I-I line sectional view;
Fig. 5 is an arc template net mould component II-II line section sectional view;
Fig. 6 is plate shaped net mould component II-II line sectional view;
Fig. 7 is net mould component gusset piece welding figure;
Fig. 8 is net mould component node welding figure;
Fig. 9 is reinforced inner bearing type net mould component vertical view;
Figure 10 is reinforced inner bearing type net mould component I-I line sectional view;
Figure 11 is light-duty coupling connection formula net mould component vertical view;
Figure 12 is light-duty coupling connection formula net mould component I-I line sectional view;
Figure 13 is flat bridge shape shelf structure figure;
Figure 14 is light-duty multi-arch type net mould component vertical view;
Figure 15 is a multi-arch type net mould component I-I line sectional view;
Figure 16 is an arc plate shape multi-arch type net mould component II-II line sectional view;
Preferred forms
By the following examples, in conjunction with the accompanying drawings, implementation of the present invention is described further:
Embodiment one
Present embodiment is under the IV of less stable class circle rock condition, uses steel mesh reinforcement shell support to replace shape steel bracket supporting stalk arched tunnel, and every support adds Bolt Connection and forms, as shown in Figure 1 by the correct assembly unit of 3-4 Pin net mould component.New pick tunnel can be carried out supporting construction in the following manner, carries out work plane supporting when interim with the anchor pole of spacing 1.0-1.2M earlier.Hysteresis work plane suitably distance is installed steel mesh reinforcement shell support continuously, whenever installs one.Closely knit with the secretion that is about to backbreak, fitted in rack outer surface and tunnel surface.Next frame support is installed then.Spacing not between frame and the frame supports continuously to country rock.If engineering specifications need seal the surface, tunnel, then execute the thin-lift concrete of spray thickness 20-30mm at last, with the outer reinforcement net covering of steel mesh reinforcement shell support, finish permanent support.
Present embodiment requires steel mesh reinforcement shell support stability strong, enabling capabilities should reach the respective level of U18-29 shape steel bracket, thereby its arc plate shape net mould component and plate shaped net mould component employing Figure 11-light-duty coupling connection formula net mould component shown in Figure 13, scantling is: bottom width 560-640mm, top width 700-800mm, thickness 120-150mm.Bar gauge is: chord member diameter 18-24mm, vertical iliacus diameter 10-14mm, flat bridge shape frame bar diameter 6-8mm.Gusset piece thickness 6-8mm, every meter net shell quantity of reinforcement 12-20kg.
Embodiment two.
Present embodiment is under unsettled V class surrounding rock condition, carries out roadway support with closed wire-shell bolting shotcrete structure, and drift section is the water chestnut arch, the crown of every steel mesh reinforcement shell support, both sides Qu Qiang, and each forms end arch with a Pin arc plate shape net mould component.The banjo fixing butt jointing place of member all embeds a wood and expands backing plate and add bolt again and connect.The composition form of supporting and protection structure as shown in Figure 2, sequence of construction is: after the tunnel excavates, earlier carry out work plane temporary lining with the anchor pole of spacing 1.0-1.2M and the thin spray-up of thickness 20mm, hysteresis work plane suitably distance is installed steel mesh reinforcement shell support continuously, to strengthen support force, discharge a part of surrouding rock deformation simultaneously to top group.Execute the concrete of spray thickness 80-120mm then, Double-level Reticulated Shell is all covered.Form top group wire-shell bolting shotcrete supporting and protection structure.The planted agent lays end arch net shell and concrete at last, in case of necessity, can set up end anchor pole.The net shell is encircleed at the end and floor strata joins together.
In the present embodiment, steel mesh reinforcement shell support should have good stable and certain enabling capabilities, before multiple pneumatically placed concrete, can make country rock discharge a part of distortion gradually and loose damage does not take place, after spraying concrete, the steel mesh reinforcement shell can surround the spray-up burst again, and it is very strong and the liner structure of certain toughness arranged to form support force.Use light-duty inner bearing type net mould component or light-duty multi-arch type net mould component can both reach this kind supporting effect.This example selects for use the light-duty inner bearing type net shell of Fig. 3-shown in Figure 5 as support element, and scantling is: bottom width 600-800mm, top width 520-720mm, thickness 120-150mm.Bar gauge is: chord member diameter 14-20mm, interior iliacus and vertical iliacus diameter 8-12mm, horizontal-associate muscle and setback muscle diameter 6-8mm.Every meter net shell of gusset piece thickness 6-7mm quantity of reinforcement 12-16kg.
Embodiment three
Present embodiment is under highland pressure, extremely unstable wall rock condition, carry out roadway support with closed wire-shell bolting shotcrete structure, drift section is the water chestnut arch, the crown of every steel mesh reinforcement shell support, both sides Qu Qiang, end arch are still respectively formed with a Pin arc plate shape net mould component, the joint of member embeds sheeting caps, adds bolt again and connects.The composition of supporting and protection structure still as shown in Figure 2, its sequence of construction is identical with embodiment three.
In the present embodiment.The stability of steel mesh reinforcement shell support and enabling capabilities should further be strengthened than embodiment three, reach before multiple pneumatically placed concrete and can bear the country rock strong deformation, can provide support country rock again, after spraying concrete, the steel mesh reinforcement shell can effectively weaken spray-up suffered draw shear stress, give full play to concrete supporting capacity.Therefore.The light-duty multi-arch type net shell of selecting Figure 14-shown in Figure 16 for use is as support element, and scantling is: bottom width 560-640mm, top width 700-890mm, thickness 120-200mm.Bar gauge is: chord member diameter 18-24mm, interior iliacus and vertical iliacus diameter 10-14mm, orthopedic the bar diameter 6-10mm in plane.Gusset piece thickness 6-8mm, every meter net shell quantity of reinforcement 14-24kg.
Embodiment four
Present embodiment is under unstable wall rock condition, with wire-shell bolting shotcrete structural support large-section underground and tunnel.The chamber section is the stalk arch, and every steel mesh reinforcement shell support vault is made up of 2 Pin arc plate shape net mould components, and each is made up of the both sides stalk the plate shaped net mould component of a Pin.Whole steel mesh reinforcement support composition form is not with end arch as shown in Figure 1.The sequence of construction of anchor pole, spray-up and steel mesh reinforcement shell support can be according to the use needs of chamber, making underplate concrete but do not need to act as a planted agent still as described in the embodiment two.
In the present embodiment, steel mesh reinforcement shell support must have very strong stability and enabling capabilities, and reinforced inner bearing type net mould component all can adopt shown in Figure 14-arcading net mould component shown in Figure 16 or Fig. 9-10.This example is selected reinforced inner bearing type net mould component for use, and scantling is: bottom width 560-640mm, top width 700-800mm, thickness 150-200mm.Bar gauge is: chord member and interior iliacus diameter 22-26mm, vertical iliacus diameter 12-16mm, horizontal-associate muscle and setback muscle diameter 8-10mm.Gusset piece thickness 6-8mm, every meter net shell quantity of reinforcement 20-30kg.
Claims (2)
1 one kinds of steel mesh reinforcement shell supports with sub-mine working and tunnel, the basic building block of steel mesh reinforcement shell support is arc plate shape net mould component (1) and plate shaped net mould component (2), the member two ends are welded with the gusset piece (3) in strap bolt hole, add bolted on connection by several net mould components and form a steel mesh reinforcement shell support, can embed wooden in the joint or rubber mass backing plate (5), make support except itself having certain flexible yielding property energy, also have certain contractibility; Steel mesh reinforcement shell support is characterised in that: the both sides of its arc plate shape and plate shaped net mould component are the lattice frame (20) that reinforcing bar is formed, with lattice frame (20) and gusset piece (3) is periphery, welding the double steel bar net, outer reinforcement net (9) is arc surfaced or planar shaped graticules, it can be fitted with the surface, tunnel, internal layer steel mesh reinforcement (10) is the continuous arch net of arch or multispan, it is supporting the middle part of steel mesh reinforcement (9), and with skin in length and breadth reinforcing bar form numerous little spans space bow member, integral body becomes stable three dimensional network shell structure thing.
2. use the wire-shell bolting shotcrete supporting method in anchor pole, sprayed mortar and common supporting mine working of the described steel mesh reinforcement shell of claim 1 support and tunnel, the working procedure of wire-shell bolting shotcrete method of support is: after the tunnel excavates, install anchor pole earlier and set up steel mesh reinforcement shell support continuously, and cover outer reinforcement net (9) with the thin layer sprayed mortar, jointly weak surrounding rock is carried out initial support by them, pneumatically placed concrete all covers steel mesh reinforcement shell support again subsequently, finishes permanent support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001191012A CN1163660C (en) | 2000-06-11 | 2000-06-11 | Reinforcing bar netted chock and netted-shell bolting and shotcrete support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001191012A CN1163660C (en) | 2000-06-11 | 2000-06-11 | Reinforcing bar netted chock and netted-shell bolting and shotcrete support |
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| CN1306150A CN1306150A (en) | 2001-08-01 |
| CN1163660C true CN1163660C (en) | 2004-08-25 |
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| CNB001191012A Expired - Fee Related CN1163660C (en) | 2000-06-11 | 2000-06-11 | Reinforcing bar netted chock and netted-shell bolting and shotcrete support |
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2000
- 2000-06-11 CN CNB001191012A patent/CN1163660C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102140920A (en) * | 2011-02-10 | 2011-08-03 | 上海师范大学 | Tunnel bionic reinforcement bridge |
| CN102140920B (en) * | 2011-02-10 | 2014-04-23 | 上海师范大学 | Tunnel bionic reinforcement bridge |
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