CN203847127U - Device for supporting soft rock masses at roadway intersections in coal mine under dynamic pressure environment - Google Patents
Device for supporting soft rock masses at roadway intersections in coal mine under dynamic pressure environment Download PDFInfo
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- CN203847127U CN203847127U CN201420249096.0U CN201420249096U CN203847127U CN 203847127 U CN203847127 U CN 203847127U CN 201420249096 U CN201420249096 U CN 201420249096U CN 203847127 U CN203847127 U CN 203847127U
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- rock mass
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Abstract
The utility model discloses a device for supporting soft rock masses at roadway intersections in a coal mine under the dynamic pressure environment, and relates to a soft rock mass support device. The device solves the problems that at present, the soft rock masses and roadways are prone to deformation. According to the device for supporting the soft rock masses at the roadway intersections in the coal mine under the dynamic pressure environment, the side portions and tops of the roadways are respectively provided with a layer of anchor net, anchor rods are arranged on the anchor nets, and U-shaped sheds are arranged at the outer sides of the anchor nets and the bottoms of the roadways at equal intervals; grouting anchor rods and anchor cables are vertically arranged on the inner walls of the side portions and tops of the roadways at equal intervals, and anchor cable locks penetrating through the outer ends of the anchor cables of the soft rock masses are fixed to joist steel. The device for supporting the soft rock masses at the roadway intersections in the coal mine under the dynamic pressure environment is simple in structure and convenient to construct and greatly improves anti-mining capacity of the soft masses.
Description
Technical field
The utility model relates to a kind of soft rock mass suspension device, is specifically related under a kind of coal mine the soft rock mass suspension device of tunnel infall under dynamic pressure environment.
Background technology
At present, under some coal mine because features as poor geologic condition, production technique difficulty are large and jumped to adopt and arrange that the soft rock mass work plane forming is affected by goaf, both sides, under the comprehensive function of high-ground stress, tectonic stress and mining induced stress, two ore deposits, lane are pressed abnormal strong, and bump takes place frequently, support is lost, roadway deformation speed is fast, and pucking is serious, difficult in maintenance, serious slow face propulsion speed, adopts traditional shed ding support can not meet ore deposit and presses the requirement that manifests strong tunnel.
Utility model content
The purpose of this utility model is in order to overcome deficiency of the prior art, a kind of simple in structure, easy construction is provided and can have greatly improved under the coal mine of soft rock mass resisting mining ability the soft rock mass suspension device of tunnel infall under dynamic pressure environment.
For achieving the above object, the utility model provides under a kind of coal mine the soft rock mass suspension device of tunnel infall under dynamic pressure environment, the both sides of described soft rock mass are tunnel, and described tunnel comprises tunnel portion of side, top, tunnel and bottom, tunnel, and top, Bang Buji tunnel, described tunnel arranges one deck anchor net; Online and perpendicular to the inwall of tunnel portion of side and the equidistant anchor pole that arranges of the inwall at top, tunnel, described anchor net is fixed on the inwall of tunnel portion of side and the inwall at top, tunnel by the supporting plate on anchor pole and nut at described anchor; In the anchor net outside of the inwall of tunnel portion of side and the inwall at top, tunnel and bottom, tunnel is equidistant that U-shaped canopy is set; Perpendicular to the inwall of tunnel portion of side and the equidistant grouted anchor bar that arranges of the inwall at top, tunnel; Perpendicular to the inwall of tunnel portion of side and the equidistant anchor cable that arranges of the inwall at top, tunnel; Equidistant and level is fixed by anchor cable lock through the anchor cable two ends of soft rock mass, through the anchor cable lock of the outer end of the anchor cable of soft rock mass, is fixed on i iron, and i iron is equidistant and be level and arrange perpendicular to the U-shaped canopy of soft rock mass both sides outside soft rock mass.
Mesh length and wide 100mm, the 100mm of being respectively of described anchor net, the bar diameter of anchor net is 10mm; The diameter of anchor pole is 20mm, and the length of anchor pole is 2400mm, and anchor pole spacing is 700mm, and anchor pole array pitch is 700mm.
Described U-shaped canopy is 36U shaped steel, and U-shaped canopy spacing is 600mm; The diameter of described grouted anchor bar is 21.5mm, and the length of grouted anchor bar is 2000mm, and grouted anchor bar spacing is 1600mm, and grouted anchor bar array pitch is 1200mm; The diameter of described anchor cable is 17.8mm, and the length of anchor cable is 6500mm, and anchor cable array pitch is 1200mm; Described i iron is No. 11 i iron, and i iron array pitch is 1200mm.
The beneficial effects of the utility model: under coal mine of the present utility model, under dynamic pressure environment, the soft rock mass suspension device of tunnel infall is simple in structure, easy construction, saves manpower; Strong adaptability, is applicable to large deformation and adopts tunnel; Supporting effect is good, can effectively prevent wall caving phenomenon, and material consumption is low; Greatly improve the application life in tunnel, reduced roadway maintenance expense; Guarantee the quick propelling of coal-face, improved coal production and benefit, eliminated the potential safety hazard of roadway deformation in producing.
Below in conjunction with accompanying drawing, the soft rock mass suspension device of tunnel infall under dynamic pressure environment under coal mine of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is the utility model coal mine roadway infall three-switch door structural representation;
Fig. 2 is the utility model coal mine roadway infall soft rock mass supporting top view;
Fig. 3 is the A-A cut-away view of Fig. 2.
In figure: 1, tunnel portion of side, 2, top, tunnel, 3, bottom, tunnel, 4, anchor net, 5, anchor pole, 6, U-shaped canopy, 7, grouted anchor bar, 8, anchor cable, 9, i iron, 10, soft rock mass, 11, soft rock mass periphery tunnel.
Specific embodiment
As shown in Figure 1, the soft rock mass 10 of the tunnel infall in the soft rock mass three-switch door structure of tunnel infall and soft rock mass periphery tunnel 11 under dynamic pressure environment under the coal mine of the present embodiment.As shown in Figures 2 and 3, under the coal mine of the present embodiment, under dynamic pressure environment, the both sides of the soft rock mass of the soft rock mass suspension device of tunnel infall are tunnel, tunnel comprises tunnel portion of side 1, top, tunnel 2 and bottom, tunnel 3, and tunnel portion of side 1 and top, tunnel 2 arrange one deck anchor net 4.On anchor net 4 and perpendicular to the inwall of tunnel portion of side 1 and the equidistant anchor pole 5 that arranges of the inwall at top, tunnel 2, anchor net 4 is fixed on the inwall of tunnel portion of side 1 and the inwall at top, tunnel 2 by the supporting plate on anchor pole 5 and nut.Mesh length and wide 100mm, the 100mm of being respectively of anchor net 4, the bar diameter of anchor net 4 is 10mm; The diameter of anchor pole 5 is 20mm, and the length of anchor pole 5 is 2400mm, and anchor pole 5 spacing are 700mm, and anchor pole 5 array pitch are 700mm.In anchor net 4 outsides of the inwall of tunnel portion of side 1 and the inwall at top, tunnel 2 and bottom, tunnel 3 is equidistant that U-shaped canopy 6 is set, U-shaped canopy 6 is 36U shaped steel, and U-shaped canopy 6 spacing are 600mm.The rear inwall to the inwall of tunnel portion of side 1 and top, tunnel 2 of the good U-shaped canopy 6 of frame is whitewashed, and shotcrete thickness is 150mm.After the inwall at the inwall of tunnel portion of side 1 and top, tunnel 2 is whitewashed, perpendicular to the inwall of tunnel portion of side 1 and the equidistant grouted anchor bar 7 that arranges of the inwall at top, tunnel 2, the slip casting water/binder ratio 0.75～1: 1 of grouted anchor bar 7, the diameter of grouted anchor bar 7 is 21.5mm, the length of grouted anchor bar 7 is 2000mm, grouted anchor bar 7 spacing are 1600mm, and grouted anchor bar 7 array pitch are 1200mm.Perpendicular to the inwall of tunnel portion of side 1 and the equidistant anchor cable 8 that arranges of the inwall at top, tunnel 2, equidistant and level is fixed by anchor cable lock through anchor cable 8 two ends of soft rock mass 10, anchor cable lock through the outer end of the anchor cable 8 of soft rock mass 10 is fixed on i iron 9, and i iron 9 is equidistant and be level and arrange perpendicular to the U-shaped canopy 6 of soft rock mass 10 both sides in soft rock mass 10 outsides.The diameter of anchor cable 4 is 17.8mm, and the length of anchor cable is 6500mm, and anchor cable array pitch is 1200mm.Anchor cable 8 is fixing by i iron 9 with the outer end of anchor cable 8, and the diameter of i iron 9 is 17.8mm, and the length of i iron 9 is 6500mm, and i iron 9 array pitch are 1200mm.
Therefore, under coal mine under dynamic pressure environment the soft rock mass of tunnel infall by mooring anchor net and frame canopy, and whitewash and slip casting, the anchor rope truss consisting of anchor cable and i iron is again reinforced, thereby the soft rock mass that makes tunnel infall obtains supporting preferably, be applicable to large deformation and adopt tunnel, can effectively prevent wall caving phenomenon, reduce roadway maintenance expense, eliminated the potential safety hazard of roadway deformation in producing.
Claims (3)
1. the soft rock mass suspension device of tunnel infall under dynamic pressure environment under a coal mine, the both sides of described soft rock mass are tunnel, described tunnel comprises tunnel portion of side, top, tunnel and bottom, tunnel, it is characterized in that, top, Bang Buji tunnel, described tunnel arranges one deck anchor net; Online and perpendicular to the inwall of tunnel portion of side and the equidistant anchor pole that arranges of the inwall at top, tunnel, described anchor net is fixed on the inwall of tunnel portion of side and the inwall at top, tunnel by the supporting plate on anchor pole and nut at described anchor; In the anchor net outside of the inwall of tunnel portion of side and the inwall at top, tunnel and bottom, tunnel is equidistant that U-shaped canopy is set; Perpendicular to the inwall of tunnel portion of side and the equidistant grouted anchor bar that arranges of the inwall at top, tunnel; Perpendicular to the inwall of tunnel portion of side and the equidistant anchor cable that arranges of the inwall at top, tunnel; Equidistant and level is fixed by anchor cable lock through the anchor cable two ends of soft rock mass, through the anchor cable lock of the outer end of the anchor cable of soft rock mass, is fixed on i iron, and i iron is equidistant and be level and arrange perpendicular to the U-shaped canopy of soft rock mass both sides outside soft rock mass.
2. the soft rock mass suspension device of tunnel infall under dynamic pressure environment under coal mine according to claim 1, is characterized in that, long and wide 100mm, the 100mm of being respectively of the mesh of described anchor net, and the bar diameter of anchor net is 10mm; The diameter of anchor pole is 20mm, and the length of anchor pole is 2400mm, and anchor pole spacing is 700mm, and anchor pole array pitch is 700mm.
3. the soft rock mass suspension device of tunnel infall under dynamic pressure environment under coal mine according to claim 1, is characterized in that, described U-shaped canopy is 36U shaped steel, and U-shaped canopy spacing is 600mm; The diameter of described grouted anchor bar is 21.5mm, and the length of grouted anchor bar is 2000mm, and grouted anchor bar spacing is 1600mm, and grouted anchor bar array pitch is 1200mm; The diameter of described anchor cable is 17.8mm, and the length of anchor cable is 6500mm, and anchor cable array pitch is 1200mm; Described i iron is No. 11 i iron, and i iron array pitch is 1200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249096.0U CN203847127U (en) | 2014-05-10 | 2014-05-10 | Device for supporting soft rock masses at roadway intersections in coal mine under dynamic pressure environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420249096.0U CN203847127U (en) | 2014-05-10 | 2014-05-10 | Device for supporting soft rock masses at roadway intersections in coal mine under dynamic pressure environment |
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| Publication Number | Publication Date |
|---|---|
| CN203847127U true CN203847127U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420249096.0U Expired - Fee Related CN203847127U (en) | 2014-05-10 | 2014-05-10 | Device for supporting soft rock masses at roadway intersections in coal mine under dynamic pressure environment |
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| CN (1) | CN203847127U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612728A (en) * | 2014-12-25 | 2015-05-13 | 辽宁建筑职业学院 | Roadway supporting method for forming cross point by penetrating through existing roadway |
| CN110761811A (en) * | 2019-10-27 | 2020-02-07 | 西南交通大学 | Layered soft rock tunnel asymmetric supporting structure and construction method |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN113550768A (en) * | 2021-09-03 | 2021-10-26 | 淮北市平远软岩支护工程技术有限公司 | Y-shaped roadway supporting method and auxiliary equipment for roadway with high rock burst |
-
2014
- 2014-05-10 CN CN201420249096.0U patent/CN203847127U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612728A (en) * | 2014-12-25 | 2015-05-13 | 辽宁建筑职业学院 | Roadway supporting method for forming cross point by penetrating through existing roadway |
| CN110761811A (en) * | 2019-10-27 | 2020-02-07 | 西南交通大学 | Layered soft rock tunnel asymmetric supporting structure and construction method |
| CN112664248A (en) * | 2020-12-25 | 2021-04-16 | 国家能源集团宁夏煤业有限责任公司 | Soft rock water spraying roadway supporting method |
| CN113550768A (en) * | 2021-09-03 | 2021-10-26 | 淮北市平远软岩支护工程技术有限公司 | Y-shaped roadway supporting method and auxiliary equipment for roadway with high rock burst |
| CN113550768B (en) * | 2021-09-03 | 2022-07-12 | 淮北市平远软岩支护工程技术有限公司 | Y-shaped roadway supporting method and auxiliary equipment for roadway with high rock burst |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150510 |
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| EXPY | Termination of patent right or utility model |