CN203296778U - Rigid-flexible combination gob-side entry retaining roadway-side shoring device - Google Patents
Rigid-flexible combination gob-side entry retaining roadway-side shoring device Download PDFInfo
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- CN203296778U CN203296778U CN2013202736010U CN201320273601U CN203296778U CN 203296778 U CN203296778 U CN 203296778U CN 2013202736010 U CN2013202736010 U CN 2013202736010U CN 201320273601 U CN201320273601 U CN 201320273601U CN 203296778 U CN203296778 U CN 203296778U
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- gob
- entry retaining
- roadway
- concrete
- side entry
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Abstract
The utility model discloses a rigid-flexible combination gob-side entry retaining roadway-side shoring device. A pack wall built with gangue bags is arranged along one side of a gob, a concrete spray layer is arranged on the pack wall, a preformed roadway is formed by the concrete spray layer and other roadways, and a roadway-side shoring structure is arranged in the preformed roadway, mainly composed of concrete-filled steel tube struts and a gangue bag layer above the concrete-filled steel tube struts, and used for supporting a top board of the preformed roadway. As for the rigid-flexible combination gob-side entry retaining roadway-side shoring device, flexible yielding of the gangue bags is combined with high-strength shoring of the concrete-filled steel tube struts, and therefore the rigid-flexible combination gob-side entry retaining roadway-side shoring device is particularly suitable for thin-seam gob-side entry retaining projects in a deep high-stress state. The rigid-flexible combination gob-side entry retaining roadway-side shoring device can effectively enhance gob-side entry retaining speed and efficiency and improve the working environment in the preformed roadway.
Description
Technical field
The utility model is involved in the gob side entry retaining field of girdle under the high-stress state of deep, relates in particular to a kind of gob side entry retaining roadside support device of hard and soft combination.
Background technology
Gob side entry retaining is an important technology without the coal pillar mining system, efficiently solves the ventilation of Y type, control face gas exceeding limit technical problem, can also reduce tunnelling amount, reasonable development coal resources simultaneously.According to existing analysis without the coal pillar mining system, gob side entry retaining generally can make exploiting field extraction coal rate improve 10～20%, make the tunnelling rate reduce by 25～33%.
Edge air gallery technology is mainly at the favorably situated roadside support body of the goaf side at work plane rear, to realize staying the purpose in lane, the roadside support body need to have enough supporting intensities come controlroof sinking, and can in time cut top to top board, simultaneously have again the motion that certain contractibility adapts to top board, overlying strata are carried out to certain pressure release.It is at goaf side, to construct the obturation of one fixed width that current edge air gallery technology is taked major measure, utilize obturation be used for close the goaf, support the overlying rock top board, thereby reach, stay the purpose of establishing tunnel.Yet obturation is constructed the complicated construction technique in process, and underworkings filling system and the production system ，Liu lane speed that influences each other is very slow; The supporting intensity of obturation is limited simultaneously, and effect is bad in high stress Xia Dehu lane.
Therefore, prior art needs further improve and develop.
The utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of gob side entry retaining roadside support device of hard and soft combination, to improve the supporting intensity to tunnel, simplifies the underworkings construction technology, improves the tunnel operating environment.
A kind of gob side entry retaining roadside support device of hard and soft combination, wherein, one side is provided with the pack wall that is assembled by the spoil bag along goaf, on described pack wall, be provided with a concrete spray coating, described concrete spray coating forms a reserved tunnel with the residue tunnel, in described reserved tunnel, be provided with a roadside support structure, be used to supporting the top board in described reserved tunnel.
Described gob side entry retaining roadside support device, wherein, described roadside support structure comprises many row steel tube concretes pillar of arranging along described concrete spray coating length, and many row steel tube concretes pillar top is provided with steel plate, between the top board in described steel plate and described reserved tunnel, is provided with spoil bag layer; Described roadside support structure is integral type.
The gob side entry retaining roadside support device of a kind of hard and soft combination that the utility model provides, after adopting the interior filling concrete of seamless steel pipe, the confinement effect effect of steel pipe makes the internal core concrete be in the three dimension stress state, concrete compressive strength and incompressible deformability have been improved, the seamless steel pipe concrete filled can effectively support steel pipe inner wall simultaneously, strengthened the geometrical stability of steel pipe walls, thereby made the concrete filled steel tube pillar have very high supporting capacity; And the concrete filled steel tube pillar does not connect top, the spoil bag has certain compression deformation ability, can carry out certain pressure that allows to top board, discharge the portion of energy in rock stratum, after its compression reaches capacity, concrete filled steel tube pillar performance supporting usefulness, realize the high strength support to top board, and this kind supporting and protection structure is particularly useful for the gob side entry retaining under the high-stress state of deep; And the main component concrete filled steel tube pillar of the utility model roadside support gob-side entry retaining method can be machined by ground, directly being transported to tunnel sets up and gets final product, the work that underworkings will carry out is assembling and whitewashing for goaf side and concrete filled steel tube pillar top spoil bag only, so relative and original pumped downhole concrete filling technology, construction technology is greatly simplified, labour intensity reduces ，Qie Liu lane speed and greatly accelerates; Work plane Nei Liu lane operation and stoping work influence each other less, have improved the production efficiency of work plane, have improved the operating environment in the tunnel.
The accompanying drawing explanation
Fig. 1 is the layout schematic diagram of gob side entry retaining roadside support device in the utility model;
Fig. 2 is the cross-sectional view along A-A line in Fig. 2;
Fig. 3 is the cross-sectional view along B-B line in Fig. 2.
The specific embodiment
The utility model provides a kind of gob side entry retaining roadside support device of hard and soft combination, and is clearer, clear and definite for making the purpose of this utility model, technical scheme and effect, below the utility model further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides a kind of gob side entry retaining roadside support device of hard and soft combination, as shown in Figure 1, Figure 2 with shown in Figure 3, in goaf 1, be filled with the spoil that nature collapses, described goaf 1 one sides are provided with the pack wall 2 that is assembled by the spoil bag, on described pack wall 2, be provided with a concrete spray coating 3, described concrete spray coating 3 forms a reserved tunnel 4 with the residue tunnel, in described reserved tunnel 4, is provided with a roadside support structure, be used to the top board 5 that supports described reserved tunnel 4.
Further, as shown in Figure 2 and Figure 3, described roadside support structure comprises many row steel tube concretes pillar 6 of arranging along described reserved tunnel axis direction, many row steel tube concretes pillar 6 tops are provided with steel plate 7, between the top board 5 in described steel plate 7 and described reserved tunnel 4, are provided with spoil bag layer 8; And described roadside support structure is integral type.This structure allows the flexibility of spoil bag press the high strength support with the concrete filled steel tube pillar to combine, be specially adapted to the deep high-stress state under the gob side entry retaining engineering, have that construction technology is simple, support capacity is strong, can effectively improve advantages such as staying lane speed.
For more detailed explanation device of the present utility model, below enumerate the concrete utilization that more detailed embodiment illustrates the utility model device.
At first at ground processing and fabricating concrete filled steel tube pillar, concrete filled steel tube pillar height is less than reserved head-room 200～300mm, and the caliber of steel pipe calculates according to the required support force that provides.The steel pipe lower end blocks with the spot welding steel plate, and the steel plate area, greater than the steel tube section area, as the skate that pillar is worn, is about to it as base plate.Concrete pours into from steel pipe top, with inserting the jolt ramming of people's formula vibrator, waters the degree of depth at every turn and is about 50cm, and the pillar top, after the concrete settlement stability, carefully shakes with spatula flat, after natural curing, is transported to job site;
After work plane pushes to adopt, from open-off cut, the distance of hysteresis work plane 2～3m assembles one deck pack wall near the edge in goaf with the spoil bag in reserved tunnel and connects top, and the processing of whitewashing, in order to isolated goaf, and prevent in goaf that the fragmented rock body sheet enters and stay in the zone, lane, wherein the spoil bag is hard steel wire bag, concrete spray coating thickness is not less than 100mm;
In reserved tunnel, near goaf side, be close to the pack wall spray-up and install at least two row steel tube concrete pillars, the array pitch of concrete filled steel tube pillar is 0.8～1.2m, concrete filled steel tube skate that pillar is worn and roadway floor is smooth fixing, guaranteed the stability of concrete filled steel tube pillar.After the concrete filled steel tube pillar sets up, along reserved tunnel axis direction, every three row steel tube concrete pillars, lay a block plate, steel plate thickness is not less than 4mm, and continuous laying forms bed course, above steel plate, assemble the spoil bag, intensive code is real until connect top board, and the spoil bag is hard steel wire bag, connects behind top the spoil bag that the assembles processing of whitewashing, make it to become the integral body of intact, with the common roadside support structure that forms a kind of hard and soft combination of concrete filled steel tube pillar.The utility model technological operation is simple, has improved the supporting intensity to tunnel, has simplified the underworkings construction technology, has improved the tunnel operating environment.
Certainly; above explanation is only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this manual; alternative, obvious variant that all that make are equal to, within all dropping on the essential scope of this manual, ought to be subject to protection of the present utility model.
Claims (2)
1. the gob side entry retaining roadside support device of a hard and soft combination, it is characterized in that, one side is provided with the pack wall that is assembled by the spoil bag along goaf, on described pack wall, be provided with a concrete spray coating, described concrete spray coating forms a reserved tunnel with the residue tunnel, in described reserved tunnel, be provided with a roadside support structure, be used to supporting the top board in described reserved tunnel.
2. gob side entry retaining roadside support device according to claim 1, it is characterized in that, described roadside support structure comprises many row steel tube concretes pillar of arranging along described reserved tunnel axis direction, many row steel tube concretes pillar top is provided with steel plate, between the top board in described steel plate and described reserved tunnel, is provided with spoil bag layer; Described roadside support structure is integral type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202736010U CN203296778U (en) | 2013-05-20 | 2013-05-20 | Rigid-flexible combination gob-side entry retaining roadway-side shoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202736010U CN203296778U (en) | 2013-05-20 | 2013-05-20 | Rigid-flexible combination gob-side entry retaining roadway-side shoring device |
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| Publication Number | Publication Date |
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| CN203296778U true CN203296778U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202736010U Expired - Fee Related CN203296778U (en) | 2013-05-20 | 2013-05-20 | Rigid-flexible combination gob-side entry retaining roadway-side shoring device |
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| CN (1) | CN203296778U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291319A (en) * | 2013-05-20 | 2013-09-11 | 山东科技大学 | Rigid-flexible combination gob-side entry retaining method and rigid-flexible combination gob-side entry retaining device by aid of roadside supports |
| CN106121690A (en) * | 2016-07-13 | 2016-11-16 | 武汉工程大学 | A kind of leg unit for supporting dead zone and the method for supporting dead zone |
| CN109209488A (en) * | 2018-11-12 | 2019-01-15 | 王�琦 | Gob side entry confined concrete pillar construction equipment and mechanized construction method |
-
2013
- 2013-05-20 CN CN2013202736010U patent/CN203296778U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291319A (en) * | 2013-05-20 | 2013-09-11 | 山东科技大学 | Rigid-flexible combination gob-side entry retaining method and rigid-flexible combination gob-side entry retaining device by aid of roadside supports |
| CN106121690A (en) * | 2016-07-13 | 2016-11-16 | 武汉工程大学 | A kind of leg unit for supporting dead zone and the method for supporting dead zone |
| CN109209488A (en) * | 2018-11-12 | 2019-01-15 | 王�琦 | Gob side entry confined concrete pillar construction equipment and mechanized construction method |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20131120 Termination date: 20140520 |