CN204984458U - Medium -thickness seam gob entry's support system - Google Patents
Medium -thickness seam gob entry's support system Download PDFInfo
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- CN204984458U CN204984458U CN201520600196.8U CN201520600196U CN204984458U CN 204984458 U CN204984458 U CN 204984458U CN 201520600196 U CN201520600196 U CN 201520600196U CN 204984458 U CN204984458 U CN 204984458U
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Abstract
The utility model relates to a medium -thickness seam gob entry's support system, including the liu xiang tunnel, the liuxiang tunnel is equipped with four channel -section steel anchor ropes and struts, and liuxiang adopts in the tunnel line three hydraulic prop of gob entry section installation with the lining. Hydraulic prop's top is even as an organic whole through a word hinged girder and cross hinged girder, and the skate is equipped with to hydraulic prop's bottom, and one hydraulic prop being close the lying is equipped with and prevents pricking the end and protect group's skate, helps to be equipped with pi shaped steel and struts along empty. 20 meters are equipped with one stock beyond the working face advance support, and the dress wire net is hung in the same direction as the tunnel to the top stock. Being equipped with pre -buried group stock, anti -tear wire net and helping the steel band in the same direction as gob entry, pre -buried group stock is pre -buried in the inbreak roof, and the anti -tear wire net is connected with pre -buried group stock. The utility model discloses use hydraulic prop, skate, pi shaped steel, cross linked roof bar and wire net and strut the combination, improved support system's stability. Utilize the roof caving rock to bring up tunnel one side watch box by oneself, the construction is simple, and with low costs, the security is good.
Description
Technical field
The utility model belongs to mining technical field, relates to a kind of support system of medium-thickness seam gob side entry retaining.
Background technology
Gob side entry retaining is the special technique treatment measures that long-mining use is carried out in colliery, during long-mining, the tunnel in working face extraction process is remained, for the back production of the ventilation of this work plane, haul, draining or next work plane.The way in lane is stayed to be retained former crossheading position along edge, goaf along with work plane pushes to adopt.Gob side entry retaining can Resource recovery to greatest extent, avoids loss of coal pillar.Edge air gallery technology can change traditional Mining Area and take over order, reduces mine ten thousand tons of drivage ratios, improves working section recovery and the mine rate of extraction, economic benefit and social benefit remarkable.
A large amount of fruitful research has been done in edge air gallery technology research by China, achieve reasonable effect, especially be widely used in girdle, in recent years, in application case in thick and high seam constantly increase, main application obturation reproduces Xiang Bangliu lane technology, and overall applicability effect is better, but its subject matter is complex procedures, stay lane cost higher.Explore novel gob side entry retaining equipment technology, provide the support of sufficient intensity to top, tunnel side, realize operating procedure simple, staying lane with low cost, is a developing direction of current edge air gallery technology.
Utility model content
The purpose of this utility model is to provide a kind of support system of medium-thickness seam gob side entry retaining, to optimize the activities of gob side entry retaining, simplifies the structure of gob side entry retaining, improves tunnel support strength, reduce gob side entry retaining cost of production.
The technical solution of the utility model is: the support system of medium-thickness seam gob side entry retaining, comprises Liu Xiang tunnel, and Liu Xiang tunnel is provided with four road channel-section steel cable boltings, and Liu Xiang adopts in tunnel line and installs three road hydraulic props with inner gob side entry retaining section.The top of hydraulic prop is connected as a single entity by a word hinged girder and cross hinged girder, and skate is equipped with in the bottom of hydraulic prop, and one hydraulic prop close to lower side is equipped with wall supporting skate of the anti-tie end, is provided with the supporting of π shaped steel along empty side.Beyond ahead work face supporting, 20 meters are provided with one top anchor pole, and top anchor pole mounts gauze wire cloth along tunnel.Be provided with pre-buried side anchor pole, anti-tear gauze wire cloth and side steel band along gob side entry retaining, pre-buried side anchor pole is embedded in inbreak top board, and anti-tear gauze wire cloth is connected with pre-buried side anchor pole.
The anchor cable length of channel-section steel anchor cable is 5000 ~ 7000mm, and cable interval is 2000 ~ 2500mm, and anchor cable array pitch is 650 ~ 1200mm.The channel-section steel length of channel-section steel anchor cable is 1800 ~ 2400mm, and channel-section steel spacing is 1000 ~ 1500mm, and every root channel-section steel coordinates two anchor cables.The specification of top anchor pole is Ф 22 × 2400mm left hand thread steel anchor rod, and spacing is 900mm, gauze wire cloth width 1100mm, the long 4000mm of described steel band.Adjustable is needed according to design.The specification of side anchor pole is Ф 16 × 2000mm rod bolt, and the trestle column of side anchor pole is 900 × 900mm.Work plane pushes to adopt in process, notes protection gauze wire cloth, prevents coal-winning machine series cylinder winding steel wire net.
Wall supporting skate is made up of mining channel-section steel, steel plate, seamless steel pipe, round steel, chain link and base plate at the anti-tie end, and seamless steel pipe is welded on base plate, and steel plate side is welded with mining channel-section steel, and bottom is welded with base plate.Steel plate is provided with chain link, and described base plate bottom is provided with mining round steel reinforcing rib.Anti-tear gauze wire cloth be four around the anti-tear bilateral hexagonal wire net of formula prestressing force.π shaped steel is mining 7
#π shaped steel, the length of π shaped steel intercepts according to the height of gob side entry retaining.
The method of the utility model medium-thickness seam gob side entry retaining adopts high strength to coordinate special protecting to push up wall supporting device by contracting hydraulic prop, manually provide break line, realize gob side entry retaining, its main operational principle implements artificial presplitting break line, under powerful topping device effect, goaf top plate is caving according to designing requirement, thus adopts empty side side at former stope drift active workings and form the lane side cut together and emit top board face to be formed, the object in lane is stayed in realization.
The support system of the utility model medium-thickness seam gob side entry retaining is mainly applied high strength and can the anti-tear gauze wire cloth supporting of the contracting hydraulic prop+special skate of wall supporting of the anti-tie end+high strength π shaped steel+intersection hinge roof+high strength be combined, be aided with tunnel coal side and top board strengthening supporting, make full use of the advantage of various different support pattern, form a Ge Liu lane organic whole support system.Improve the stability of support system.Utilize roof caving rock to bring up side, tunnel prop voluntarily, construction is simple, and cost is low, and safety is good.
Accompanying drawing explanation
Fig. 1 is the floor map of the utility model medium-thickness seam gob-side entry retaining support system;
Fig. 2 is the sectional drawing of medium-thickness seam gob-side entry retaining support system;
Fig. 3 is the structural representation of wall supporting skate of the anti-tie end;
Fig. 4 is the top view of Fig. 3.
Wherein:
1-channel-section steel anchor cable, 2-hydraulic prop, 3-anchor cable, 4-gauze wire cloth, 5-inbreak top board, 6-pre-buried side anchor pole, 7-anti-tear gauze wire cloth, 8-chain link, 9-steel plate, 10-mining channel-section steel, 11-seamless steel pipe, 12-base plate, 13-mining round steel, 14-Liu Xiang tunnel, 15-π shaped steel, 16-anti-tie end wall supporting skate, 17-skate.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in detail.The utility model protection domain is not limited to embodiment, and those skilled in the art make the scope that any change also belongs to the utility model protection in the scope that claim limits.
The support system of the utility model medium-thickness seam gob side entry retaining as shown in Figure 1 and Figure 2, comprise Liu Xiang tunnel 14, Liu Xiang tunnel is provided with four road channel-section steel anchor cable 1 supportings, Liu Xiang adopts in tunnel line and installs three road hydraulic props 2 with inner gob side entry retaining section, the top of hydraulic prop is connected with intersection hinge roof by a word articulated roof beam, hydraulic prop and back timber are connected as a single entity, and skate 17 is worn in the bottom of hydraulic prop.One hydraulic prop close to lower side wears wall supporting skate of the anti-tie end 16, is provided with π shaped steel 15 supporting along empty side.Beyond ahead work face supporting, 20 meters are provided with one top anchor pole, and top anchor pole mounts silk screen 4 along tunnel.Side anchor pole, anti-tear gauze wire cloth 7, pre-buried side anchor pole 6 is provided with along gob side entry retaining.Side anchor pole buries dress with inner along tunnel adopting line, and the top anchor pole that anti-tear gauze wire cloth is constructed in advance along tunnel mounts, and anti-tear gauze wire cloth is connected with pre-buried side anchor pole.The anchor cable length of anchor cable channel-section steel 1 is 6000mm, and cable interval is 2000mm, and anchor cable array pitch is 650mm.The channel-section steel length of anchor cable channel-section steel 1 is 2200mm, and channel-section steel spacing is 800mm, and channel-section steel array pitch is 650mm, and every root channel-section steel coordinates two anchor cables.Top anchor pole is specification Ф 22 × 2400mm left hand thread steel anchor rod, and spacing is 900mm, gauze wire cloth width 1100mm, and the long 4000mm of steel band, needs adjustable according to design.Side anchor pole is specification Ф 16 × 2000mm rod bolt, and the trestle column of side anchor pole is 900 × 900mm.Work plane pushes to adopt in process, notes protection gauze wire cloth, prevents coal-winning machine series cylinder winding steel wire net.
As shown in Figure 3, Figure 4, wall supporting skate of the anti-tie end is made up of mining channel-section steel 10, steel plate 9, seamless steel pipe 11 and base plate 12, and described seamless steel pipe is welded on base plate, and steel plate side is welded with mining channel-section steel, and bottom is welded with base plate.Steel plate is provided with a chain of 8, and base plate bottom is provided with mining round steel 13.Wall supporting skate of the anti-tie end, helps contact area for increasing with roadway floor and coal, improves stressed effect, hydraulic prop is coordinated to cut top to back and strengthen supporting, in addition, skate is used for fixing π shaped steel lower end, links into an integrated entity form prop bottom effective tunnel with π shaped steel.Hydraulic prop adopts DW series overstriking hydraulic prop, and according to coal seam thickness and head-room, the pillar model of special differing heights, improves support force of single-column, be beneficial to back and cut top.
The process of the utility model medium-thickness seam gob side entry retaining is: during working face extraction, and with advance of the face reinforcing construction channel-section steel anchor cable beyond ahead work face supporting, concrete scheme is as follows:
(1) arrange four road channel-section steel anchor cable 1 supportings along tunnel, channel-section steel anchor cable takes a step to arrange; Channel-section steel cable bolting tunnel is near goaf side roof, and topmost a groove cable wire rope is apart from center line in roadway 550mm;
(2) with pushing to adopt, pre-buried side anchor pole being installed, hanging gauze wire cloth 4 along lane, pushing to adopt the anti-tear gauze wire cloth of Qian Shun lane pre-hung; During working face extraction, push to adopt with work plane within the scope of 20 meters beyond ahead work face supporting and install one top anchor pole in advance adopting empty side, and mount gauze wire cloth, the length of gauze wire cloth exceedes gob side entry retaining height 500mm;
Specific construction order is as follows:
1. construct in advance in advance support outer gob side entry retaining side side one top anchor pole, pre-install one steel band and anti-tear steel wire along lane, upper end is pressed under top anchor pole and steel band, is fixed on top, tunnel, and sagging along lane side;
2. after coal cutting, gauze wire cloth is routed to the top of hydraulic support shield beam, gauze wire cloth 4 pushes to adopt and enters between set cap and roof, finally arrives hydraulic support rear portion, is caving forms artificial lane side with balkstone;
3. during the roof caving of hydraulic support rear portion, according to the piling height of inbreak top board 5 pre-buried side anchor pole, and side steel band beam is installed;
(3) adopting line at work plane adopts the hydraulic prop 2 that can contract to carry out supporting with inner gob side entry retaining section, and concrete support pattern is:
1. adopt line along tunnel, three roads are installed with inner gob side entry retaining section can contracting hydraulic prop 2 supporting roof, wear skate bottom hydraulic prop, supporting emphasis deflection gob side entry retaining side;
2. install one hydraulic prop 2 along center line in roadway, back timber coordination hinge, the spacing of hydraulic prop is 1000mm, and skate worn by pillar; Apart from help under tunnel 750mm with 250mm install respectively together with hydraulic prop 2, the spacing 500mm of hydraulic prop, top coordinates intersection hinge roof supporting, hydraulic prop and back timber is connected as a single entity; One hydraulic prop close to lower side wears wall supporting skate of the anti-tie end, along the π shaped steel supporting of empty side.
Top board is II class top board, within the scope of roadway workface advance support, carry out directed presplit blasting to roof; Explosion adopts pressure to be the CO of 150 ~ 270MPa
2gas infiltration fracturing, the height of described explosion is determined according to coal roof lithologic.
The method of the utility model medium-thickness seam gob side entry retaining and support system are by first advance channel-section steel Anchor reinforced support, hydraulic prop coordination hinge back timber+π shaped steel+special iron shoe in the process of lane is stayed to carry out strengthening supporting, form top, side, bottom sheet conjunction prop, top is cut to gob side entry retaining, is shaped and safeguards, for harder II, III class top board, be aided with top board Pre-splitting Blasting Technique, in advance directed presplit blasting is carried out to break line, for the abundant inbreak of goaf top plate creates conditions, significantly reduce and stay section ore deposit, lane pressure to manifest.
The utility model application high strength can combine in the anti-tear gauze wire cloth supporting of the contracting hydraulic prop+special skate of wall supporting of the anti-tie end+high strength π shaped steel+articulated roof beam+high strength, be aided with tunnel coal side and top board strengthening supporting, make full use of the advantage of various different support pattern, form a Ge Liu lane organic whole support system.Channel-section steel Anchor reinforced support is utilized to carry out advance reinforcement to roadway surrounding rock; (1) utilize high support strength initiatively to support carrying out high strength along empty side top board by contracting hydraulic prop+special skate+intersection hinge roof of wall supporting of the anti-tie end; (2) utilize the special skate of wall supporting of the anti-tie end+high strength π shaped steel+edge sky side embedded anchor bar+four to carry out supporting around the anti-tear bilateral hexagonal wire net of formula prestressing force to along empty side.Utilize top board intersection hinge roof that supporting is connected as a whole, improve support system stability.
Claims (7)
1. the support system of a medium-thickness seam gob side entry retaining, comprise Liu Xiang tunnel (14), it is characterized in that: described Liu Xiang tunnel is provided with four road channel-section steel anchor cable (1) supportings, Liu Xiang adopts in tunnel line and installs three road hydraulic props (2) with inner gob side entry retaining section, the top of hydraulic prop is connected as a single entity by a word hinged girder and cross hinged girder, skate (17) is equipped with in the bottom of hydraulic prop, one hydraulic prop close to lower side is equipped with anti-tie end wall supporting skate (16), is provided with π shaped steel (15) supporting along empty side; Beyond ahead work face supporting, 20 meters are provided with one top anchor pole, and described top anchor pole mounts gauze wire cloth (4) along tunnel; Be provided with pre-buried side anchor pole (6), anti-tear gauze wire cloth (7) along gob side entry retaining and help steel band, described pre-buried side anchor pole is embedded in inbreak top board (5), and described anti-tear gauze wire cloth is connected with pre-buried side anchor pole.
2. the support system of medium-thickness seam gob side entry retaining according to claim 1, is characterized in that: the anchor cable length of described channel-section steel anchor cable (1) is 5000 ~ 7000mm, and cable interval is 2000 ~ 2500mm, and anchor cable array pitch is 650 ~ 1200mm; The channel-section steel length of described channel-section steel anchor cable (1) is 1800 ~ 2400mm, and channel-section steel spacing is 1000 ~ 1500mm, and every root channel-section steel coordinates two anchor cables.
3. the support system of medium-thickness seam gob side entry retaining according to claim 1, is characterized in that: the specification of described top anchor pole is Ф 22 × 2400mm left hand thread steel anchor rod, and spacing is 900mm, gauze wire cloth width 1100mm, the long 4000mm of described steel band.
4. the support system of medium-thickness seam gob side entry retaining according to claim 1, is characterized in that: the specification of described side anchor pole is Ф 16 × 2000mm rod bolt, and the trestle column of side anchor pole is 900 × 900mm.
5. the support system of medium-thickness seam gob side entry retaining according to claim 1, it is characterized in that: wall supporting skate of the described anti-tie end is made up of mining channel-section steel (10), steel plate (9), seamless steel pipe (11) and base plate (12), described seamless steel pipe is welded on base plate, described steel plate side is welded with mining channel-section steel, and bottom is welded with base plate; Described steel plate is provided with chain link (8), and described base plate bottom is provided with mining round steel reinforcing rib (13).
6. the support system of medium-thickness seam gob side entry retaining according to claim 1, is characterized in that: described anti-tear gauze wire cloth (7) be four around the anti-tear bilateral hexagonal wire net of formula prestressing force.
7. the support system of medium-thickness seam gob side entry retaining according to claim 1, is characterized in that: described π shaped steel is mining 7
#π shaped steel, the length of π shaped steel intercepts according to the height of gob side entry retaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520600196.8U CN204984458U (en) | 2015-08-11 | 2015-08-11 | Medium -thickness seam gob entry's support system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520600196.8U CN204984458U (en) | 2015-08-11 | 2015-08-11 | Medium -thickness seam gob entry's support system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003288A (en) * | 2015-08-11 | 2015-10-28 | 河北煤炭科学研究院 | Medium-thickness coal seam gob-side entry retaining method and support system |
| CN106837397A (en) * | 2017-03-20 | 2017-06-13 | 山东科技大学 | A kind of device and method isolated for gob side entry retaining lane side with supporting |
| CN110578540A (en) * | 2019-09-09 | 2019-12-17 | 辽宁工程技术大学 | Mining L shaped steel column shoes |
| CN111255514A (en) * | 2020-03-29 | 2020-06-09 | 新汶矿业集团有限责任公司 | Deep non-roadside filling gob-side entry retaining supporting structure and supporting method |
-
2015
- 2015-08-11 CN CN201520600196.8U patent/CN204984458U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105003288A (en) * | 2015-08-11 | 2015-10-28 | 河北煤炭科学研究院 | Medium-thickness coal seam gob-side entry retaining method and support system |
| CN105003288B (en) * | 2015-08-11 | 2018-01-23 | 河北煤炭科学研究院 | A kind of method and support system of medium-thickness seam gob side entry retaining |
| CN106837397A (en) * | 2017-03-20 | 2017-06-13 | 山东科技大学 | A kind of device and method isolated for gob side entry retaining lane side with supporting |
| CN110578540A (en) * | 2019-09-09 | 2019-12-17 | 辽宁工程技术大学 | Mining L shaped steel column shoes |
| CN111255514A (en) * | 2020-03-29 | 2020-06-09 | 新汶矿业集团有限责任公司 | Deep non-roadside filling gob-side entry retaining supporting structure and supporting method |
| CN111255514B (en) * | 2020-03-29 | 2021-09-28 | 新汶矿业集团有限责任公司 | Deep non-roadside filling gob-side entry retaining supporting structure and supporting method |
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| 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: 20160120 Termination date: 20190811 |
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| CF01 | Termination of patent right due to non-payment of annual fee |