CN202064979U - Semi-rigidity heterotypical girder anchor cable truss support system in roadway - Google Patents
Semi-rigidity heterotypical girder anchor cable truss support system in roadway Download PDFInfo
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- CN202064979U CN202064979U CN2011201249704U CN201120124970U CN202064979U CN 202064979 U CN202064979 U CN 202064979U CN 2011201249704 U CN2011201249704 U CN 2011201249704U CN 201120124970 U CN201120124970 U CN 201120124970U CN 202064979 U CN202064979 U CN 202064979U
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Abstract
The utility model relates to a semi-rigidity heterotypical girder anchor cable truss support system in a roadway. A metal net is paved on the surface of the roadway; a coal rock roof or a roadway side is provided with a semi-rigidity heterotypical girder anchor cable truss; the semi-rigidity heterotypical girder anchor cable truss comprises heterotypical girders and anchor cables or anchor cables, wherein the heterotypical girders are respectively provided with semi-rigidity nodes; each heterotypical girder is provided with a plurality of anchor cables or anchor rods; the anchor cables or the anchor rods are anchored into a rock stratum after passing through the heterotypical girders and the metal net, and a prestressing force is applied to form an extrusion hold protection action on surrounding rock; and the outer anchor ends of the anchor cables or the anchor rods are respectively provided with a tray and a lockset which are used for enabling the tips of the anchor cables or the anchor rods to be tightly matched with the heterotypical girders. The semi-rigidity heterotypical girder anchor cable truss support system in the roadway has the advantages as follows: 1. The support system has large surface protection area and high rigidity and is not easy to destabilize, and the integrity of the support system is ensured; 2. Steel is saved, the cost is reduced, and the benefit is improved; 3. The strength is high, and the adjustment space of overall support performance is big; And 4. The semi-rigidity nodes are capable of performing a good flexible pressure releasing action, thereby, the stability and the safety of the overall support system are ensured.
Description
Technical field
The utility model relates to a kind of mine timbering field, particularly a kind of semi-rigid special-shaped beam anchor cable truss roadway support system.
Background technology
The colliery tunnel support technology is the key technology in the coal mining at present.Keep adjoining rock stability, preventing the tunnel excessive deformation and destroying is the necessary condition that realizes mine safety, High-efficient Production.Along with mine develops both in depth and in breadth, the roadway support problem shows more and more outstandingly.
At present, BOLTING TECHNOLOGY TO COAL ROADWAY reaches its maturity, and the bolt support scope is applied to IV, V level country rock gradually from I, II, III level country rock.But under these complex conditions particularly for the tunnel of deep high-ground stress large span, roadway roof absciss layer distortion especially severe, only can't the effective support top board by the anchor shaft anchor cable institute that uses at present, top board integral body often takes place help two walls to shear the phenomenon of landing along the lane; Owing to be subjected to high stress, portion of the group distortion of heading is also very big, usually causes the tunnel shrinkage strain to cause the tunnel to use in addition.Particularly for gob side entry driving, the high-performance anchor pole combination supporting technology of using also seems powerless at present.The deflection of lane group is the coal column lateral wall particularly, at the beginning of the pick lane tangible distortion is just arranged, and to recovery phase, deflection reaches more than 70% of total deformation usually, and it is nearly 2/3 that section shrinks, and the tunnel can't be used, even causes security incident.Many work planes are had to stop production and are overhauled the tunnel or dig the tunnel in addition, and not only support cost is very high, and driving speed is low, and brings a lot of potential safety hazards, seriously restricts the quick propelling of coal-face and the raising of mine output and benefit.
The utility model content
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of supporting intensity height is provided, safe, Denver Nuggets speed is fast, when particularly above back fragmentation or top board, having structural belt or absciss layer, can well control top board, improve the supporting stress, avoid the semi-rigid special-shaped beam anchor cable truss roadway support system of occurrence of large-area roof fall accident.
For achieving the above object, the utility model adopts following technical proposals:
A kind of semi-rigid special-shaped beam anchor cable truss roadway support system, be equipped with wire lath on surface, described tunnel, help in coal rock roof plate or lane and to be provided with semi-rigid special-shaped beam anchor cable truss, described semi-rigid special-shaped beam anchor cable truss is made up of the special-shaped beam that has semi-rigid node and anchor cable or anchor pole, and every profiled beam is furnished with several anchor cables or anchor pole; Described anchor cable or anchor pole pass described special-shaped beam and wire lath anchors in the rock stratum, and apply prestressing force, country rock is formed the extruding pocket protect effect; The outer anchor end of described anchor cable or anchor pole is equipped with and makes anchor cable or termination point of anchor rod and close-fitting pallet of special-shaped beam and lockset.
Described special-shaped beam section is " II " shape, and this abnormal shape beam is by the web of vertical setting and constitute to the edge of a wing that is provided with in length and breadth.
Described semi-rigid node is connected with special-shaped beam by high-strength bolt, and semi-rigid node is provided with the anchor cable hole for anchor cable or anchor pole connection usefulness.
Described pallet is the wedge shape pallet.
The utlity model has following advantage:
1. the semi-rigid special-shaped beam of support system is compared general steel channel beam, steel I-beam, it is big to protect surface area, the rigidity height, be difficult for unstability, the more effective transmission anchor shaft anchor cable prestressing force of energy is in top board or lane group, surrouding rock deformation can be controlled in the allowed band, avoid causing the bearing capacity forfeiture of country rock itself, thereby guarantee the globality of support system because of excessive deformation.
2. the semi-rigid special-shaped beam of support system is compared steel channel beam, steel I-beam, under the situation that identical supporting intensity requires, has clear superiority aspect economy, saves steel, reduces cost, and increases the benefit.
3. the supporting intensity height of support system, it is big that whole supporting performance is regulated the space, semi-rigid special-shaped beam and anchor pole, anchor cable are used, can carry out effective supporting to the tunnel in conjunction with parameters such as the quantity of the special-shaped beam size of on-the-spot geological condition adjustment and anchor pole and anchor cable, models to carry out the coupling of mechanical property.
4. the semi-rigid node of support system can play good flexibility and allow the effect of pressing, parameters such as the quantity by changing semi-rigid node, position, length can be regulated its flexible yielding property energy, adjustable space is big, this structure can play the pressure effect that effectively allows, after the support system bearing capacity reaches certain limit, allow the tunnel to produce certain deformation with release pressure.The coupling yield supporting has guaranteed the stability and safety of whole support system.
Description of drawings
Fig. 1 is the utility model tunnel example structure schematic diagram;
Fig. 2 is Fig. 1 vertical view;
Fig. 3 is that the semi-rigid profiled beam anchor cable of the utility model truss is faced structure chart;
Fig. 4 is Fig. 3 vertical view;
Fig. 5 is the special-shaped girder construction enlarged drawing of the utility model;
Wherein, 1. anchor pole, 2. anchor cable, 3. special-shaped beam, 4. wire lath, 5. semi-rigid node, 6. pallet and lockset, 7. steel band, 8. high-strength bolt, 9. anchor cable hole, 10. web, 11. edges of a wing.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Shown in Fig. 1-5, lay wire lath 4 on the surface, tunnel, special-shaped beam 3 and steel band 7 are set under coal rock roof plate at interval, anchor cable 2 passes special-shaped beam 3 and wire lath 4 anchors in the rock stratum, anchor cable 2 stretch-draw also link to each other by pallet and lockset 6 with special-shaped beam 3 and semi-rigid node 5 thereof, form prestressing force, top board is formed the extruding pocket protect effect.When the country rock situation was relatively poor, sample is helped in the lane can be provided with special-shaped beam 3 when (being called for short lane group) helped in tunnel two, with anchor pole 1 or the anchor cable 2 fixing top group supporting intensity coupling couplings that realize, controlled surrouding rock deformation jointly.Described anchor cable 2 or anchor pole 1 outer anchor end are equipped with and make anchor cable 2 or anchor pole 1 termination and special-shaped beam 3 close-fitting pallets and lockset 6, and pallet is the wedge shape pallet.
Special-shaped beam 3 is connected by high-strength bolt 8 with semi-rigid node 5.Wherein, special-shaped beam section is " II " shape, and special-shaped beam is made of the web 10 of vertical setting and the edge of a wing 11 of horizontally set; Leave anchor cable hole 9 on the semi-rigid node 5 and connect usefulness for anchor cable.
This support system is applicable to the drift section of different shape.
Claims (4)
1. semi-rigid special-shaped beam anchor cable truss roadway support system, it is characterized in that: be equipped with wire lath on surface, described tunnel, help in coal rock roof plate or lane and to be provided with semi-rigid special-shaped beam anchor cable truss, described semi-rigid special-shaped beam anchor cable truss is made up of the special-shaped beam that has semi-rigid node and anchor cable or anchor pole, and every profiled beam is furnished with several anchor cables or anchor pole; Described anchor cable or anchor pole pass described special-shaped beam and wire lath anchors in the rock stratum, and apply prestressing force, country rock is formed the extruding pocket protect effect; The outer anchor end of described anchor cable or anchor pole is equipped with and makes anchor cable or termination point of anchor rod and close-fitting pallet of special-shaped beam and lockset.
2. semi-rigid special-shaped beam anchor cable truss roadway support according to claim 1 system, it is characterized in that: described special-shaped beam section is " II " shape, and this abnormal shape beam is made of the web of vertical setting and the edge of a wing of horizontally set.
3. semi-rigid special-shaped beam anchor cable truss roadway support according to claim 1 system, it is characterized in that: described semi-rigid node is connected with special-shaped beam by high-strength bolt, and semi-rigid node is provided with the anchor cable hole that connects usefulness for anchor cable or anchor pole.
4. semi-rigid special-shaped beam anchor cable truss roadway support according to claim 1 system, it is characterized in that: described pallet is the wedge shape pallet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201249704U CN202064979U (en) | 2011-04-26 | 2011-04-26 | Semi-rigidity heterotypical girder anchor cable truss support system in roadway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201249704U CN202064979U (en) | 2011-04-26 | 2011-04-26 | Semi-rigidity heterotypical girder anchor cable truss support system in roadway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064979U true CN202064979U (en) | 2011-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201249704U Expired - Fee Related CN202064979U (en) | 2011-04-26 | 2011-04-26 | Semi-rigidity heterotypical girder anchor cable truss support system in roadway |
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| CN (1) | CN202064979U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182483A (en) * | 2011-04-26 | 2011-09-14 | 山东大学 | Semi-rigid abnormal beam anchor cable truss roadway supporting system |
| CN103233751A (en) * | 2013-05-07 | 2013-08-07 | 中国矿业大学 | Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates |
| CN106523003A (en) * | 2016-09-27 | 2017-03-22 | 北京科技大学 | Rigid-flexible coupling energy absorbing support technology suitable for deep mining roadway |
-
2011
- 2011-04-26 CN CN2011201249704U patent/CN202064979U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182483A (en) * | 2011-04-26 | 2011-09-14 | 山东大学 | Semi-rigid abnormal beam anchor cable truss roadway supporting system |
| CN103233751A (en) * | 2013-05-07 | 2013-08-07 | 中国矿业大学 | Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates |
| CN103233751B (en) * | 2013-05-07 | 2015-06-17 | 中国矿业大学 | Double-layer anchoring and balancing arch supporting system for coal roadway with extremely-weak top plates |
| CN106523003A (en) * | 2016-09-27 | 2017-03-22 | 北京科技大学 | Rigid-flexible coupling energy absorbing support technology suitable for deep mining roadway |
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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: 20111207 Termination date: 20140426 |