CN202039878U - Steel bar mesh shell bracket for underground roadway - Google Patents
Steel bar mesh shell bracket for underground roadway Download PDFInfo
- Publication number
- CN202039878U CN202039878U CN201120058633XU CN201120058633U CN202039878U CN 202039878 U CN202039878 U CN 202039878U CN 201120058633X U CN201120058633X U CN 201120058633XU CN 201120058633 U CN201120058633 U CN 201120058633U CN 202039878 U CN202039878 U CN 202039878U
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- steel bar
- reinforcing bar
- steel
- fixing rings
- ring
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Abstract
The utility model relates to a steel bar mesh shell bracket for a underground roadway, wherein two steel bar external fixing rings are connected through a steel bar clamping ring in a coaxial manner; the radius of the steel bar clamping ring is slightly less than the radius of the two steel bar external fixing rings, and steel bar internal fixing rings are respectively arranged in the steel bar external fixing rings and the steel bar clamping ring; the two steel bar external fixing rings are connected through a plurality of steel bars so that one steel bar mesh layer is formed; the three coaxial steel bar internal fixing rings are connected through the steel bars so that the steel bar mesh layer is formed; and finally the steel bar external fixing rings, the steel bar internal fixing rings and the steel bar clamping ring are connected crosswise through the multiple steel bars so that the steel bar mesh shell bracket is formed and a plurality of steel bar mesh shell brackets can be connected in turn through bolts end to end. The steel bar mesh shell bracket has the beneficial effects that the steel amount is saved by more than 50 percent compared with a section steel bracket, and the steel bar mesh shell bracket is a continuous three-dimensional support structure, therefore the space stability is greatly strengthened. The bracket is more convenient and faster to install than the common section steel bracket.
Description
Technical field
The utility model relates to a kind of steel mesh reinforcement shell support, relates in particular to a kind of steel mesh reinforcement shell support that is used for underground passage.
Background technology
Long trend, big exploiting field arrangement are adopted in some collieries of China in recent years, and mainly the transportation and the big lane of the return air length of service are very long, and the later stage also will be stood back production dynamic pressure influence, thereby very high to the roadway support technical requirements.Enterprise makes every effort to improve work efficiency, reduces cost, and generally sprays supporting as the first-selected support form in high stressed soft rock tunnel with the anchor net, constantly carries out technological innovation simultaneously, improves its supporting reliability.
In the soft-rock tunnel engineering, because anchor pole commonly used is short partially, reasons such as anchored force is on the low side, the past mainly lays particular emphasis on the improvement of bolt-spary supports structure country rock inside is reinforced, and is dark as strengthening anchor, high-strength anchoring, or adopt technology such as slip casting anchoring, and the strength and stiffness of having ignored the concrete spray coating structure improve, spray-up structural strength and rigidity amplification are little, the enabling capabilities that is the country rock surface is not obviously strengthened, so be difficult to control effectively surrouding rock deformation with loosening.Metallic support belongs to passive protecting, has good contractibility energy, and the surface support ability is strong; But generally can not reinforce, cause support cost greatly to improve country rock inside.Press the situation of aggravating at the underground mining degree of depth, scientific circles and engineering circle are being sought rational soft rock roadway support form always with continuing to increase.
Summary of the invention
The purpose of this utility model has been to provide a kind of steel mesh reinforcement shell support that is used for underground passage, this steel mesh reinforcement shell has absorbed the superior mechanical property of shell structure, the wire lath of the anchor net in tunnel spray supporting and protection structure laminate or sheet is reformed into a kind of space net shell structure of uniqueness, have the advantage of thin shell structures and structural system composed of bar concurrently, and place spray-up to form steel mesh reinforcement shell concrete structure it, this structure has been given full play to the advantage of reinforcing bar and two kinds of materials of concrete, make whole steel mesh reinforcement shell concrete structure and same span, other structures with material are compared, and can bear same load with much smaller thickness and material.After the construction, the whole tunnel support system presents continuous hyperbolic arch form again, makes supporting more scientific and reasonable.It has the dual characteristics of active support and passive protecting concurrently, has possessed certain contractibility simultaneously again, is a kind of semi-rigid supporting rational in infrastructure therefore.
The utility model is achieved like this, it comprises reinforcing bar external fixation ring, the reinforcing bar snap ring, retainer ring in the reinforcing bar, it is characterized in that reinforcing bar snap ring of coaxial connection between two reinforcing bar external fixation rings, the radius of described reinforcing bar snap ring is slightly less than the radius of reinforcing bar external fixation ring, and be respectively equipped with retainer ring in the reinforcing bar in reinforcing bar external fixation ring and the reinforcing bar snap ring, connect some reinforcing bars between the two reinforcing bar external fixation rings and form one deck steel mesh reinforcement, in three coaxial reinforcing bars between the retainer ring also connecting reinforcement form one deck steel mesh reinforcement, last reinforcing bar external fixation ring, in the reinforcing bar between retainer ring and the reinforcing bar snap ring in length and breadth some reinforcing bars of interconnection form steel mesh reinforcement shell support, several steel mesh reinforcement shell supports can connect by bolt by head and the tail successively.
Technique effect of the present utility model is: its rolled steel dosage is saved more than 50% than shape steel bracket, and is the continuous three-dimensional braced structures, and spatial stability strengthens greatly.The installation of support is more convenient than plain edition steel bracket, and installation rate is fast.This technology is at Deep Soft Rock Tunnel, abutment area and adopt ground and carried out type approval test respectively under the press strip spare, all achieve complete success, the tunnel long-term stability, need not reprocess, the supporting expense is than adopting the spray of common anchor net to add shape steel bracket or other Support Method savings 50% such as anchor cable and wall rock grouting, remarkable in economical benefits.This supporting and protection structure pattern is various adjustable, in light weight, the down-hole simple installation, and bearing area is big, and good stability is the optimal selection of all kinds of soft rock roadway supports.
Description of drawings
Fig. 1 is a lateral view of the present utility model.
Fig. 2 is a sectional drawing of the present utility model.
Fig. 3 is a stereogram of the present utility model.
The specific embodiment
As Fig. 1, Fig. 2, shown in Figure 3, the utility model is achieved like this, reinforcing bar snap ring 2 of coaxial connection between two reinforcing bar external fixation rings 1, the radius of described reinforcing bar snap ring 2 is slightly less than the radius of reinforcing bar external fixation ring 1, and be respectively equipped with retainer ring 3 in the reinforcing bar in reinforcing bar external fixation ring 1 and the reinforcing bar snap ring 2, connect some reinforcing bars between the two reinforcing bar external fixation rings 1 and form one deck steel mesh reinforcement, in three coaxial reinforcing bars between the retainer ring 3 also connecting reinforcement form one deck steel mesh reinforcement, last reinforcing bar external fixation ring 1, in the reinforcing bar between retainer ring 3 and the reinforcing bar snap ring 2 in length and breadth some reinforcing bars of interconnection form steel mesh reinforcement shell support, several steel mesh reinforcement shell supports can connect by bolt by head and the tail successively, after installing, can provide stronger setting load to country rock immediately, and certain contracted yielding property energy is arranged, be applicable to the more unsettled soft-rock tunnel of supporting.On high ground stress soft rock stress tunnel, deep, stratum strong dilatancy is arranged or stride under the mal-conditions such as adopting the dynamic pressure influence, after setting up steel mesh reinforcement shell support continuously, but complement anchor pole and spray and mix to doubt soil also, form wire-shell bolting shotcrete combined supporting structure, utilize the shear stress that draws in the thin spray-up of steel mesh reinforcement shell weakening, utilize anchor pole that net shell spray-up and country rock are unified again, thereby support capacity is improved greatly.
Claims (1)
1. steel mesh reinforcement shell support that is used for underground passage, it comprises reinforcing bar external fixation ring, the reinforcing bar snap ring, retainer ring in the reinforcing bar, it is characterized in that reinforcing bar snap ring of coaxial connection between two reinforcing bar external fixation rings, the radius of described reinforcing bar snap ring is slightly less than the radius of reinforcing bar external fixation ring, and be respectively equipped with retainer ring in the reinforcing bar in reinforcing bar external fixation ring and the reinforcing bar snap ring, connect some reinforcing bars between the two reinforcing bar external fixation rings and form one deck steel mesh reinforcement, in three coaxial reinforcing bars between the retainer ring also connecting reinforcement form one deck steel mesh reinforcement, last reinforcing bar external fixation ring, in the reinforcing bar between retainer ring and the reinforcing bar snap ring in length and breadth some reinforcing bars of interconnection form steel mesh reinforcement shell support, several steel mesh reinforcement shell supports can connect by bolt by head and the tail successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120058633XU CN202039878U (en) | 2011-03-08 | 2011-03-08 | Steel bar mesh shell bracket for underground roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120058633XU CN202039878U (en) | 2011-03-08 | 2011-03-08 | Steel bar mesh shell bracket for underground roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202039878U true CN202039878U (en) | 2011-11-16 |
Family
ID=44967327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120058633XU Expired - Fee Related CN202039878U (en) | 2011-03-08 | 2011-03-08 | Steel bar mesh shell bracket for underground roadway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202039878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196548A (en) * | 2014-07-23 | 2014-12-10 | 中国矿业大学(北京) | Combined cross support |
-
2011
- 2011-03-08 CN CN201120058633XU patent/CN202039878U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196548A (en) * | 2014-07-23 | 2014-12-10 | 中国矿业大学(北京) | Combined cross support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20120308 |