CN102383794A - Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure - Google Patents
Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure Download PDFInfo
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- CN102383794A CN102383794A CN2011101801179A CN201110180117A CN102383794A CN 102383794 A CN102383794 A CN 102383794A CN 2011101801179 A CN2011101801179 A CN 2011101801179A CN 201110180117 A CN201110180117 A CN 201110180117A CN 102383794 A CN102383794 A CN 102383794A
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Abstract
The invention discloses a new cross side dumping coordinated technology and a new supporting technology for an end region of a fully mechanized working face. The head of a rear conveyer is changed to a cross side dumping arrangement mode, and a motor of the rear conveyer is arranged in a smooth trough, so that the rear space of a transition support is not occupied any more, the center distance between the heads and the tails of the front and rear conveyers is consistent with the center distance of the middle sections, meanwhile, the unloading height of the conveyers is reduced, and the coal caving effect of the heads and the tails and the recovery rate of coal resources are further improved; and because the transition bracket is in the same structural form as a middle bracket, the category of hydraulic brackets of the working face can be reduced, and effective coal caving of the transition section of the top coal caving working face can be realized. A tunnel tail bracket is arranged at the rear part of a transferring machine, so that protection of the rear part of the transferring machine and smooth push of the transferring machine are realized; meanwhile, side guard plates which can be hinged are arranged on the lateral surfaces of the transferring machine, so that the rear gangue is prevented from falling into the tunnel tail bracket; end brackets are arranged at two sides of the transferring machine and have asymmetrical structures, a top beam has a step-type top beam structure, and the end brackets are matched with the tunnel tail bracket of the rear part, so that the stability of a top plate in the cross side dumping coordinated end region of the fully mechanized working face is maintained, and safe and efficiency recovery of the fully mechanized working face is realized.
Description
The present invention relates to a kind of method for designing of hydraulic support, is exactly the hydraulic support three-dimensional design method of considering coal-face country rock dynamic effects specifically.
Technical background
Coal Mining Equipment Complement (abbreviation longwall top coal caving) is one of China's high seam high-efficiency mining method, and in national wide popularization and application, caving roof coal hydraulic support is the critical equipment of longwall top coal caving.Existing fully mechanized coal face generally adopts front and rear portions conveyer drive division to be arranged in parallel, and the drive division motor is parallel to work plane, and the unloading manner of conveyer and elevating conveyor unloads for end.Because of receiving the influence of conveyer drive motors; Front and rear portions conveyer head, tail center to center distance and interlude center to center distance are inconsistent; Conveyer head, tail changeover portion are respectively arranged 3 transition brackets usually; Transition bracket adopts the reverse-four-link-bar structural shape mostly, causes changeover portion can't put coal, has restricted the raising of the fully mechanized coal face rate of recovery.With a coal seam average thickness is 9 meters, and strike length is that 1500 meters fully mechanized coal face is an example, and the coal amount that head, afterbody account for pressure is about 10～120,000 tons, if can improve drawing effectiveness here, can reclaim coal 6～80,000 ton more.For this reason; Invention rear portion conveyer intersection overall supporting new technology of side dumping and termination district support system; Improve fully mechanized coal face head, afterbody drawing effectiveness, the job safety in safeguard work face termination district further improves the supporting effect and the coal recovery rate in termination district.
Summary of the invention
The purpose of this invention is to provide a kind of fully mechanized coal face termination district intersection supporting new mode of side dumping and the new system of termination district supporting; Can control the stable of fully mechanized coal face termination district top board effectively; Realize the fully mechanized coal face changeover portion effectively put coal, be that rear portion conveyer drive division provides enough big support space in the termination district; And the action of each equipment of coordination termination district, realize safe, the efficient back production of fully mechanized coal face.
For realizing above-mentioned purpose, the longwall top coal caving process of the present invention's design is different with conventional longwall top coal caving with support pattern.First longwall top coal caving rear portion conveyer chain-drive section cooperates with elevating conveyor by the end mode of unloading and changes the side dumping mode of intersecting into; This mode is arranged in the conveyer motor in the crossheading; No longer take the space at transition bracket rear portion; Reduce the discharge height of conveyer simultaneously, that can realize head, afterbody effectively puts coal, improves the rate of recovery of coal resources; And make front and rear part conveyer head, tail center to center distance consistent with interlude center to center distance, and improve the operation condition of rear portion conveyer, improve equipment overall operation reliability.It two is to change traditional Caving Coal transition bracket structural shape; Adopt the caving roof coal hydraulic support identical with the middle bracket structure; Adapt to novel supporting production practice requirement, reduce the working surface hydraulic support device category, that can realize the top-coal caving face changeover portion effectively puts coal; Again the walkway parallel with work plane can be provided, make the walkway more smooth and easy.It three is to arrange end of a lane support at the rear portion of elevating conveyor, realize the protection at elevating conveyor rear portion and the smooth passing of elevating conveyor, simultaneously its side setting can be hinged the side guard, avoid the rear portion spoil to emit and drop into end of a lane internal stent.It four is that rear portion conveyer drive motors is placed in the tunnel, in view of its occupation space is bigger, therefore changes the structural shape of traditional Caving Coal face end support, adopts the dissymmetrical structure pattern that is arranged in the elevating conveyor both sides.Face end support adopts reverse-four-link-bar and two power bars as stabilizing mechanism, and the two is according to the needs in space, and arrangement is different, has formed the face end support of the anisopleual structural shape of elevating conveyor.Face end support cooperates with rear portion end of a lane support, reserves enough support space for rear portion conveyer drive motors, keeps the stable of fully mechanized coal face termination district top board simultaneously.
Description of drawings
Overall supporting arrangement diagram is arranged in the conveyer intersection side dumping of Fig. 1 top-coal caving face rear portion
Fig. 2 intersects side dumping top-coal caving face end of a lane supporting structure sketch map
Fig. 3 face end support I and end of a lane supporting structure sketch map
Fig. 4 face end support II and end of a lane supporting structure sketch map
Fig. 5 face end support I, II staged back timber structural representation
The specific embodiment
The present invention shown in Figure 1 intersects side dumping and arranges that fully mechanized coal face termination supporting technology capital equipment comprises coal-winning machine (1), anterior conveyer (2), Caving Coal middle bracket (3), rear portion conveyer (4), transition bracket (5), end of a lane support (6), elevating conveyor (7), face end support I (8) and face end support II (9) etc.
At fully mechanized coal face, coal-winning machine (1), anterior conveyer (2) are immediate support with the Matching Relationship of caving roof coal hydraulic support (3), promptly after coal-winning machine (1) coal cutting, in time draw support (3); Conveyer (2) changeover portion forwardly, coal-winning machine (1), anterior conveyer (2) are the hysteresis supporting with the Matching Relationship of Caving Coal transition bracket (5), i.e. after coal-winning machine (1) coal cutting, push away anterior conveyer (2) earlier, and then are pulled through and cross support (5).The unloading manner of rear portion conveyer (4) changes the intersection side dumping into here, and its drive motors is put in the tunnel, no longer takies the rear portion support space of changeover portion, changes the structural shape of transition bracket (5) for this reason, adopts the hydraulic support identical with the middle bracket structural shape.
In fully mechanized coal face termination district; Rear portion conveyer (4) adopts the side dumping mode of intersecting with elevating conveyor (7); End of a lane support (6) is arranged at elevating conveyor (7) rear portion, and end of a lane support (6) can think that elevating conveyor (7) provides enough support space, can also be the mobile thrust that provides of elevating conveyor (7).
Because the existence of rear portion conveyer intersection side dumping arrangement and rear portion conveyer drive division; Change the structural shape of traditional top-coal caving face face end support; Design the fully mechanized coal face face end support of novel adaptation intersection side dumping arrangement in the both sides of elevating conveyor (7), enough big no column support space is provided.Novel fully mechanized coal face face end support I (8) and face end support II (9) cooperate with end of a lane support (6), can realize the safety support of fully mechanized coal face termination portion, realize safety, the high-efficiency mining of fully mechanized coal face.
Be applicable to the top-coal caving face transition bracket (5) of intersection side dumping arrangement; Changed traditional Caving Coal transition bracket structural shape; Adopt the caving roof coal hydraulic support identical with the middle bracket structure, reduce the working surface hydraulic support device category, that can realize the top-coal caving face changeover portion effectively puts coal; Again the walkway parallel with work plane can be provided, be convenient to the pedestrian.
The top-coal caving face end of a lane support that is applicable to intersection side dumping arrangement for the present invention shown in Figure 2; Its characteristic mainly be its side be provided with can be hinged multistage side guard board (11), (12) cooperate with side guard board (13) on hinged and the base; Realize the totally-enclosed of end of a lane cradle, can prevent that the side spoil from rolling into end of a lane internal stent.
Shown in Figure 3ly intersect the top-coal caving face face end support I (8) of side dumping arrangement for the present invention is applicable to, it is arranged in elevating conveyor (7) near the rib side.Face end support I (8) is made up of preceding back timber (16), back back timber (17), preceding base (20), pull bar (21), rear base (22) and hinged therebetween stabilizing mechanism and column.Hinged reverse-four-link-bar structure between its preceding back timber (16) and the preceding base (17) (forming) by lower link (13), last connecting rod (14), caving shield (15); Thereafter hinged two power bars (forming) between back timber (17) and the rear base (22) by upper boom (18) and lower beam (19); Preceding back timber (16) is hinged with back back timber (17); Preceding base (20) is connected through pull bar (21) with rear base (22), and is different according to the space, can hinged 3～4 columns between back timber and the base.
Shown in Figure 4ly intersect the top-coal caving face face end support II (9) of side dumping arrangement for the present invention is applicable to, it is arranged in elevating conveyor (7) near People's Bank of China's side.Face end support II (9) is by being made up of preceding back timber (23), back back timber (24), preceding base (27), rear base (26) and hinged therebetween stabilizing mechanism and column.Thereafter hinged reverse-four-link-bar structure between back timber (23) and the rear base (27) (by lower link (13), go up connecting rod (14), caving shield (15) is formed); Hinged two power bars between its preceding back timber (24) and the preceding base (26) (forming) by upper boom (24) and lower beam (25); Preceding back timber (23) is hinged with back back timber (24), and preceding base (27) and rear base (26) are hinged, but are hinged with the wall supporting device (25) of leveling in the rear end of back timber; Different according to the space, can hinged 3～4 columns between back timber and the base.
The face end support staged back timber structure that designs for the present invention shown in Figure 5; The mid portion of every side back timber is than more than the low 200mm in back timber top; Can avoid support to interfering with anchor pole in the support repeatedly of top board and the reach process, can also the effective support top board, avoid top board inbreak from the middle part.
Working face ended support I (8), working face ended support II (9) cooperate with end of a lane support (6), top board that can supporting fully mechanized coal face termination district.
Claims (4)
1. supporting new mode of fully mechanized coal face; It is characterized in that two conveyers of longwall top coal caving work plane front and rear portions adopt different unloading manners; Its middle front part conveyer adopts end to unload arrangement; When the coal of coal-winning machine cut is transported to head through anterior conveyer, directly be unloaded on the elevating conveyor by anterior conveyer head; Rear portion conveyer and elevating conveyor adopt and intersect the side dumping arrangement, when the coal that put down at the work plane rear portion is transported to rear portion conveyer head, lead through coal-ploughing board, are discharged in the elevating conveyor chute through rear portion conveyer headstock.
2. rear portion according to claim 1 conveyer intersects the supporting new mode of side dumping, and rear portion conveyer drive motors axis normal in the work plane direction, and is arranged in it in tunnel; Can make front and rear portions conveyer head, tail center to center distance consistent with interlude center to center distance.At the Caving Coal transition bracket that the conveyer changeover portion is placed, structural shape is identical with middle bracket, and it puts coal mechanism can realize the effective Caving Coal of work plane transition section;
3. a kind of Caving Coal end of a lane support that adapts to intersection side dumping supporting technology according to claim 1; It is arranged in the rear portion of elevating conveyor; Its hinged secondary in back timber side or the hinged detachable side guard of multistage side guard and base side are realized the totally-enclosed of end of a lane cradle;
4. a kind of Caving Coal face end support that adapts to the supporting mode of intersection side dumping according to claim 1 adopt dissymmetrical structure, and back timber adopts rugged stepped construction.
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| CN201110180117.9A CN102383794B (en) | 2011-06-29 | 2011-06-29 | Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure |
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| CN201110180117.9A CN102383794B (en) | 2011-06-29 | 2011-06-29 | Cross side dumping arrangement coordinated mode of rear conveyer of fully mechanized working face and support structure |
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| CN102749432A (en) * | 2012-05-17 | 2012-10-24 | 中国矿业大学(北京) | Fully mechanized caving top coal caving three-dimensional simulation experiment platform and experiment method |
| CN102900464A (en) * | 2012-09-17 | 2013-01-30 | 宁夏天地奔牛实业集团有限公司 | Tail drive transmission device for rear scraper conveyors |
| CN103498675A (en) * | 2013-09-23 | 2014-01-08 | 三一重型装备有限公司 | Scraper conveyor and coal conveying system |
| CN103775082A (en) * | 2014-01-20 | 2014-05-07 | 宁夏天地奔牛实业集团有限公司 | Novel thin coal seam overlapped side-unloading structure |
| CN104265344A (en) * | 2014-10-17 | 2015-01-07 | 沈阳天安矿山机械股份有限公司 | Conveyor unloading part rear-mounted end hydraulic support |
| CN104594932A (en) * | 2014-12-29 | 2015-05-06 | 中国神华能源股份有限公司 | Mining supporting support equipment and mining method thereof |
| CN105775608A (en) * | 2016-03-30 | 2016-07-20 | 中煤张家口煤矿机械有限责任公司 | Machine head pushing part of scraper conveyer |
| CN108412528A (en) * | 2018-04-23 | 2018-08-17 | 山东塔高矿业机械装备制造有限公司 | Based on the hydraulic support device and method for protecting support for extending tunnel |
| CN111022115A (en) * | 2019-11-19 | 2020-04-17 | 中煤张家口煤矿机械有限责任公司 | Arrangement method of front-lapping rear-end-unloading fully-mechanized caving face conveying and crushing equipment |
| CN111042858A (en) * | 2019-11-14 | 2020-04-21 | 中煤张家口煤矿机械有限责任公司 | Arrangement method of front-lap-joint rear-crossed fully mechanized caving face conveying and crushing equipment |
| CN112253116A (en) * | 2020-10-27 | 2021-01-22 | 山西三元煤业股份有限公司 | Method for caving coal at end of lagging working face |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102749432B (en) * | 2012-05-17 | 2014-08-06 | 中国矿业大学(北京) | Fully mechanized caving top coal caving three-dimensional simulation experiment method |
| CN102749432A (en) * | 2012-05-17 | 2012-10-24 | 中国矿业大学(北京) | Fully mechanized caving top coal caving three-dimensional simulation experiment platform and experiment method |
| CN102900464A (en) * | 2012-09-17 | 2013-01-30 | 宁夏天地奔牛实业集团有限公司 | Tail drive transmission device for rear scraper conveyors |
| CN102900464B (en) * | 2012-09-17 | 2015-12-09 | 宁夏天地奔牛实业集团有限公司 | Rear portion scraper conveyor tail drive transmission |
| CN103498675B (en) * | 2013-09-23 | 2016-03-23 | 三一重型装备有限公司 | Drag conveyor and coal conveying system |
| CN103498675A (en) * | 2013-09-23 | 2014-01-08 | 三一重型装备有限公司 | Scraper conveyor and coal conveying system |
| CN103775082A (en) * | 2014-01-20 | 2014-05-07 | 宁夏天地奔牛实业集团有限公司 | Novel thin coal seam overlapped side-unloading structure |
| CN103775082B (en) * | 2014-01-20 | 2016-10-19 | 宁夏天地奔牛实业集团有限公司 | Novel thin coal seam overlap side dump structure |
| CN104265344A (en) * | 2014-10-17 | 2015-01-07 | 沈阳天安矿山机械股份有限公司 | Conveyor unloading part rear-mounted end hydraulic support |
| CN104594932A (en) * | 2014-12-29 | 2015-05-06 | 中国神华能源股份有限公司 | Mining supporting support equipment and mining method thereof |
| CN105775608A (en) * | 2016-03-30 | 2016-07-20 | 中煤张家口煤矿机械有限责任公司 | Machine head pushing part of scraper conveyer |
| CN108412528A (en) * | 2018-04-23 | 2018-08-17 | 山东塔高矿业机械装备制造有限公司 | Based on the hydraulic support device and method for protecting support for extending tunnel |
| CN108412528B (en) * | 2018-04-23 | 2019-09-17 | 山东塔高矿业机械装备制造有限公司 | Based on the hydraulic support device and method for protecting support for extending tunnel |
| CN111042858A (en) * | 2019-11-14 | 2020-04-21 | 中煤张家口煤矿机械有限责任公司 | Arrangement method of front-lap-joint rear-crossed fully mechanized caving face conveying and crushing equipment |
| CN111022115A (en) * | 2019-11-19 | 2020-04-17 | 中煤张家口煤矿机械有限责任公司 | Arrangement method of front-lapping rear-end-unloading fully-mechanized caving face conveying and crushing equipment |
| CN112253116A (en) * | 2020-10-27 | 2021-01-22 | 山西三元煤业股份有限公司 | Method for caving coal at end of lagging working face |
| CN112253116B (en) * | 2020-10-27 | 2022-05-31 | 山西三元煤业股份有限公司 | Method for caving coal at end of lagging working face |
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Owner name: YANZHOU COAL INDUSTRY CO., LTD. Effective date: 20130122 |
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Inventor after: Li Weimin Inventor after: Hu Wanchang Inventor after: Liu Jian Inventor after: Wang Chunsheng Inventor after: Liu Zhuang Inventor after: Feng Liyou Inventor after: Qi Yuhao Inventor after: Ren Huaiwei Inventor after: Wang Guofa Inventor after: Jin Tai Inventor after: Li Mingzhong Inventor after: Shi Chengzhong Inventor after: Wu Lizhong Inventor after: Meng Xiangjun Inventor after: Wang Biaomou Inventor after: Zhang Chonghong Inventor before: Wang Guofa Inventor before: Wang Chunsheng Inventor before: Feng Liyou Inventor before: Ren Huaiwei Inventor before: Meng Fanlong Inventor before: Wang Jianguo Inventor before: Xin Jiaxiang Inventor before: Shi Chengzhong Inventor before: Li Mingzhong Inventor before: Liu Jian Inventor before: Liu Zhuang Inventor before: Wang Biaomou Inventor before: Wu Lizhong Inventor before: Hu Wanchang Inventor before: Qi Yuhao |
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Free format text: CORRECT: INVENTOR; FROM: WANG GUOFA SHI CHENGZHONG LI MINGZHONG LIU JIAN LIU ZHUANG WANG BIAOMOU WULIZHONG HU WANCHANG QI YUHAO WANG CHUNSHENG FENG LIYOU REN HUAIWEI MENG FANLONG WANG JIANGUO XIN JIAXIANG TO: LI WEIMIN WANG GUOFA JIN TAI LI MINGZHONG SHI CHENGZHONG WU LIZHONG MENG XIANGJUN WANG BIAOMOU ZHANG CHONGHONG HU WANCHANG LIU JIAN WANG CHUNSHENG LIU ZHUANG FENG LIYOU QI YUHAO REN HUAIWEI |
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Effective date of registration: 20130122 Address after: 100013 mining design division, No. 5 Youth Ditch Road, Chaoyang District, Beijing, Hepingli Applicant after: Tiandi Science & Technology Co., Ltd. Applicant after: Yanzhou Coal Industry Co., Ltd. Address before: 100013 mining design division, No. 5 Youth Ditch Road, Chaoyang District, Beijing, Hepingli Applicant before: Tiandi Science & Technology Co., Ltd. |
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