CN102373937B - Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam - Google Patents
Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam Download PDFInfo
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- CN102373937B CN102373937B CN201110291767.0A CN201110291767A CN102373937B CN 102373937 B CN102373937 B CN 102373937B CN 201110291767 A CN201110291767 A CN 201110291767A CN 102373937 B CN102373937 B CN 102373937B
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Abstract
The present invention relates to a kind of rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam, adapt to pseudo-tiltedly arrangement coal winning technology feature of bowing, traditional quadric chain is split as two parts, back timber and base are designed as diamond structure simultaneously, support state adjustment is realized by being articulated with the adjustment devices such as the balance adjustment oil cylinder of back timber and caving shield, ensure that stable beam-ends is from preventing side fall roof, maintains the unimpeded of hydraulic support front portion walkway, formed stable beam-ends from pedestrian space.
Description
Technical field
The present invention relates to coal mine underground coal-face comprehensive mechanical coal mining support apparatus technical field, belong to the coal mining support apparatus of a kind of steeply-inclined seam mining work surface.
Background technology
Half-edge coal seam is distributed more widely in China, and occurrence condition is complicated, and mine quantity is many, and exploitation difficulty is big, there occurs a lot of major accident in recent years.In December, 206 state coal Supervisory Bureau is for the lesson of major accident occurred in difficult seam mining in recent years, actively push forward coal winning technology reform, eliminate informal coal-mining method, improve half-edge coal seam Technology of Safety Mining and management level further, for violating " safety regulations in coal mine ", the various informal coal-mining method not reaching safety requirements should order it to stop using.It is phased out wooden prop and metal mainstay supporting, improves the technology and equipment level of half-edge coal seam safe working.This invention meets the adjustment requirement of national energy security, coal industry policy.
China's half-edge coal seam is widely distributed, particularly occupy absolute ratio especially at southwest, East China coal reserves, the exploitation of half-edge coal seam continues contradiction or Mining Protective Seam for solving mining area exploitation, improves resource recovery ratio, alleviates area coal disparities between supply and demand significant.Most of mining area in domestic leading coal producing province city, such as Panzhihua Mining Area, Guang Wang mining area, the Nan Tong mining area of Chongqing City, mining area, the self-sufficient and strategically located region, Xinjiang Urumqi mining area, the administrative colliery of production and construction corps, Ewirgol ore deposit, Huating Gansu mining area, mining area, Jingyuan, Guizhou mining area, big portion,, there are a large amount of more than 45 ° half-edge coal seams in the Shuangyashan in Heilungkiang, Qitaihe, mining area, Hegang etc..General unused the combining in coal seam of the high inclination-angle of more than 45 ° is adopted by these mining areas, and yield is generally low, and worker's labor intensity is very big, poor stability.Half-edge coal seam is distributed more widely in China, and occurrence condition is complicated, and mine quantity is many, and exploitation difficulty is big.Abroad do not find that inclination angle is more than 45 ° of single reports moving towards longwall full-mechanized mining technique of girdle yet.
Domestic many collieries are required for solving to adapt to single more than the girdle at 45 ° of inclination angles move towards longwall full-mechanized mining technique technology.Steeply-inclined seam mining working space angle of inclination is big, and equipment back skating is dangerous big, the potential threats such as coal mine waste rock splashing are big, there is the difficulty that it is special, half-edge coal seam structure complexity, fold, tomography haves both at the same time, working environment is severe, production safety hidden danger is many, combine that to adopt difficulty big, plant equipment adaptability is required high especially, it is difficult to apply existing fully-mechanized mining equipment supporting, therefore commonly used timber, the behindhand types such as monomer carry out supporting, personal security is difficult to ensure that, coal-mining method falls behind, adopt conventional equipment method exploitation half-edge coal seam, very difficult.Research and development can be applied to the fully-mechanized mining equipment of half-edge coal seam, it is achieved its comprehensive mechanical coal mining and personal security, improves its yield, is of great immediate significance.
Use conventional methods that to carry out the exploitation of half-edge coal seam with technique be the difficult problem that cannot go beyond, but without effective solution.It was verified that the adaptability of the equipment that it is critical only that of steeply-inclined seam mining；Owing to the adaptability of coal mine machinery equipment is required that height, difficulty are big by steeply-inclined seam mining work surface, the exploitation slower development of most mining areas half-edge coal seam, recovery ratio is low, serious waste of resources.The exploitation of half-edge coal seam rhombus hydraulic support could alter that the current mining of half-edge coal seam, and effective and reasonable utilizes coal resources, meets the requirement built a conservation-minded society, and the development of this invention has been filled up China's half-edge coal seam and combined that to adopt supporting field blank.
Summary of the invention
Bow the coal winning technology technical characterstic of pseudo-tiltedly arrangement for adapting to realize half-edge coal seam, by the research of fully mechanized mining supporter force-bearing situation under fully mechanized mining face surrounding rock movement characteristic and control law thereof, steeply-inclined seam mining work surface rhombus hydraulic support, coal-mining method of combining closely and coordinative composition of equipments feature, traditional quadric chain is split as two parts by rhombus hydraulic support, back timber and base are designed as diamond structure simultaneously, formed stable beam-ends from pedestrian space.
Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam, it is a feature of the present invention that:
The four-bar linkage structure of hydraulic support is split as front and back two parts, and back timber and base are designed as diamond shape simultaneously.The back timber of support and the hinge hole of caving shield are split as front and back two parts, and caving shield is split-type structural, and the hinge hole of base and front-rear linkage is split as front and rear part.The quadric chain that the rock-steady structure of such rhombus hydraulic support is staggered by front and back is hinged so that back timber diamond shaped, is conducive to reducing hydraulic support top beam supporting area, improve supporting intensity, the base of rhombus hydraulic support increases contacts baseplate area, and structure adaptability is strong, good stability.Owing to half-edge coal seam medium-height trestle is subject to coming from the spoil effect of work surface upper back all the time, the quadric chain staggered in front and back can effectively stop the spoil impact to support in upper back under pseudo-slanted bar part of bowing, make no matter support is holding state or moves rack-like state, the active force acting on rear portion protective plate can both effectively be undertaken by column, preventing bracket upright post from being destroyed by oblique pulling, whole frame system motion is flexible, and automaticity is high, handiness is laborsaving, and work efficiency is high.Owing to work surface top rib is relatively big by downward-sloping component, easily cause leaky roof or coal wall caving.In steeply-inclined seam mining process, seam inclination reaches 55～69 °, upside spoil coal cinder tumble direction personal security under serious threat work surface, high_dipping face hydraulic support is in instability status in a free state, occurs toppling over phenomenon.When work surface is pressed, due to the motion on top, base plate, also it is easily generated unstability, the phenomenon of falling frame, or abnormal operating state occurs.
Rhombus hydraulic support adapts to half-edge coal seam and bows pseudo-tiltedly production practice, the dimensional fits relation of all kinds support is taken into full account when fully-mechanized mining working coordinative composition of equipments, carry out the spoil protected working cut between eye and work surface, provide safe and reliable work space for work surface.Owing to half-edge coal seam pseudo-tiltedly fully-mechanized mining working of bowing have employed pseudo-tiltedly arrangement of bowing, diamond rack has needed sequentially to move frame from bottom to up, requires that conveyer level advances simultaneously, must not glide, overcomes pushing and sliding can produce the bigger shifting amount of drag conveyor simultaneously.High-dipping hydraulic support adapts to high-dipping different angle, work surface fluctuations working face of coal seam exploitation feature, and supporting structure is simply compact, lightweight, is beneficial to shifting frame and transport operation.Half-edge coal seam is bowed, and puppet is oblique exploits work surface rhombus hydraulic support, adapts to this pseudo-tiltedly Matching Relationship of bowing, thus keeping the constant distance of face roof under control.Support has supporting side country rock and the dual-use function of supported face top board, belongs to shielding, supporting type hydraulic support.
By studying mine pressure law in steeply-inclined seam mining, improve the adaptability of fully-mechanized mining working corollary equipment, specify the action character of half-edge coal seam support and Relationship Between Face Supports And Surrounding, stress, perfect diamond rack calculates force-bearing of surrounding rock mass model, the exploitation of half-edge coal seam rhombus comprehensive mining hydraulic bracket falls behind the upgrading of production practice for half-edge coal seam, realize half-edge coal seam combine adopt the technology of providing and material guarantee, meet the raising requirement of half-edge coal seam comprehensive mechanized coal mining method, practice can be good at solving a series of relevant issues of exploitation of half-edge coal seam, change the present situation after steeply-inclined seam mining side deals with, mechanical mining space safely and efficiently is provided, from technique and technical equipment, solve the comprehensive of half-edge coal seam perfectly adopt key technical problem, including fully-mechanized mining working personal security, conveyer elapses automatically, hydraulic moving stand, realize the cycle operation of half-edge coal seam fully-mechanized mining working, realize automatically creating premise material conditions with unmanned automatically working faces such as machines for half-edge coal seam.
Accompanying drawing explanation
Fig. 1 is half-edge coal seam rhombus comprehensive mining hydraulic bracket structural representation of the present invention.
Fig. 2 is the base vertical view of half-edge coal seam rhombus comprehensive mining hydraulic bracket.
Fig. 3 is the back timber top view of half-edge coal seam rhombus comprehensive mining hydraulic bracket.
Fig. 4 is that the comprehensive of half-edge coal seam rhombus comprehensive mining hydraulic bracket adopts supporting top view.
Fig. 5 is back timber and the column assembling schematic diagram of half-edge coal seam rhombus comprehensive mining hydraulic bracket.
Wherein 1: back timber, 2: column, 3: balance adjustment oil cylinder, 4: caving shield, 5: base, 6: front rod, 7: back link, 8: conveyer regulates oil cylinder, 9: side guard plate.
Detailed description of the invention
Shown in Fig. 1, Fig. 2, Fig. 3, Fig. 5: half-edge coal seam is bowed, and puppet is oblique exploits work surface rhombus hydraulic support, mainly include column and back timber 1 that two ends are respectively articulated with and base 5, column 2 is support cylinder, the maximum height making support reaches designing requirement, column 2 adopts 2, and 2 root posts become front two rows to be staggeredly arranged；The back timber of Fig. 2 and Fig. 3 rhombus comprehensive mining hydraulic bracket and base vertical view back timber and base are both designed as diamond structure, the left and right quadric chain changing of the relative positions therewith hinged with it is front and rear part, back timber and base arrange, by means of the front and back changing of the relative positions of quadric chain, the maximization achieving supporting intensity, effectively stop top spoil scurrying in moving frame process simultaneously.Back timber 1 sidepiece is provided with side guard plate 9, seals and anti-down between frame；Conveyer regulates oil cylinder 8 and realizes conveyer antiskid position adjustment；The comprehensive of Fig. 4 half-edge coal seam rhombus comprehensive mining hydraulic bracket adopts supporting top view.
This half-edge coal seam rhombus comprehensive mining hydraulic bracket has common hydraulic shield support feature and performance, condition is provided for half-edge coal seam comprehensive mechanization safety and high efficiency, regulate device realize support state adjustment by being articulated with the balance adjustment oil cylinder 3 of back timber and caving shield, add stabilizing mechanism intensity, back timber is designed as rhombus and ensures that stable beam-ends is from preventing side fall roof, base is designed as rhombus and maintains the unimpeded of hydraulic support front portion walkway, increase face-airing section, reduce work surface windage, dilute for face gas, improve production efficiency and provide basic guarantee, work surface is conducive to realize safe and efficient production.
Claims (4)
1. rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam, it is characterized in that: hydraulic support is by back timber, base, and it is directly connected in the caving shield between back timber and base, connecting rod forms, the quadric chain of support stable structure is split as front and back two parts, hydraulic support has two support cylinder supporting top beams of two rows, top beam rear end is hinged with caving shield, caving shield is hinged by connecting rod and base rear portion, back timber is hinged by balance adjustment oil cylinder and caving shield, with adjusting pole back timber state, back timber and base are both designed as diamond structure, the quadric chain hinged with it changing of the relative positions therewith is front and rear part, caving shield and front-rear linkage are split as the front and back two parts Split type structure adapted to back timber and base；Quadric chain can not also the changing of the relative positions arrange and only back timber and base be designed as diamond structure, half-edge coal seam rhombus comprehensive mining hydraulic bracket integral central is from being adjusted with conveyer chute.
2. rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam as claimed in claim 1, it is characterized in that: back timber and base are diamond structures, purpose be to cooperate with high-dipping fully mechanized mining formed stable beam-ends from consistent pedestrian space, bracket stable mechanism is double leval jib pattern.
3. rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam as claimed in claim 1 or 2, it is characterised in that: the balance adjustment oil cylinder being articulated with between back timber and caving shield is arranged in middle part or the both sides of diamond rack.
4. rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam as claimed in claim 1 or 2, it is characterised in that: described comprehensive mining hydraulic bracket back timber and caving shield arrange one side or bilateral side guard plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110291767.0A CN102373937B (en) | 2011-09-30 | 2011-09-30 | Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam |
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| CN201110291767.0A CN102373937B (en) | 2011-09-30 | 2011-09-30 | Rhombic hydraulic support for pseudo-inclined down mining working surface of steep coal seam |
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| CN102373937A CN102373937A (en) | 2012-03-14 |
| CN102373937B true CN102373937B (en) | 2016-06-29 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562113A (en) * | 2012-03-15 | 2012-07-11 | 重庆市能源投资集团科技有限责任公司 | Anti-skidding structure of three-machine matched equipment for fully mechanized coal face of steep seam |
| CN103696793A (en) * | 2013-10-21 | 2014-04-02 | 四川华蓥山广能集团嘉华机械有限责任公司 | Pseudo-oblique fully-mechanized coal mining hydraulic bracket |
| CN104234733A (en) * | 2014-07-04 | 2014-12-24 | 四川省华蓥山煤业股份有限公司李子垭南煤矿 | Overlook inclined fully mechanized coal mining face supporting method and shield support frame |
| CN110656963A (en) * | 2019-09-18 | 2020-01-07 | 新疆矿源重工科技有限公司 | N-shaped fully mechanized mining support for steeply inclined coal seam |
| CN112943248A (en) * | 2021-03-17 | 2021-06-11 | 西安科技大学 | Mining method for inclined layered solid deposit |
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| DE3618437A1 (en) * | 1986-05-31 | 1987-12-03 | Gewerk Eisenhuette Westfalia | Extraction frame for use in inclined stratification |
| CN2142498Y (en) * | 1992-10-22 | 1993-09-22 | 煤炭科学研究总院重庆分院 | Hydraulic frame for inclined coal layer |
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| CN101942999A (en) * | 2010-08-20 | 2011-01-12 | 天地科技股份有限公司 | Coal mining method for high-dipping low seam |
| CN201835831U (en) * | 2010-08-20 | 2011-05-18 | 天地科技股份有限公司 | Digging and conveying fully-mechanized mining unit for high-pitch long-wall working face |
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| US2105504A (en) * | 1935-09-09 | 1938-01-18 | Ramsay Erskine | Method of mining coal |
| SU415381A1 (en) * | 1972-01-21 | 1974-02-15 | ||
| FR2570435A1 (en) * | 1984-09-20 | 1986-03-21 | Koezponti Banyaszati Fejleszte | Method and equipment for mining steep mineral seams, particularly coal seams |
| DE3618437A1 (en) * | 1986-05-31 | 1987-12-03 | Gewerk Eisenhuette Westfalia | Extraction frame for use in inclined stratification |
| CN2142498Y (en) * | 1992-10-22 | 1993-09-22 | 煤炭科学研究总院重庆分院 | Hydraulic frame for inclined coal layer |
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Inventor after: Wang Guofa Inventor after: Zhao Zhili Inventor after: Du Zhongxiao Inventor after: Ning Guifeng Inventor after: Zeng Mingsheng Inventor after: Liu Xinhua Inventor after: Song Zhiying Inventor after: Wang Biaomou Inventor after: Li Tijian Inventor after: Wang Junjie Inventor after: Li Jifeng Inventor before: Wang Guofa Inventor before: Ning Guifeng Inventor before: Zeng Mingsheng Inventor before: Liu Xinhua Inventor before: Song Zhiying Inventor before: Wang Biaomou Inventor before: Li Tijian Inventor before: Zhao Zhili Inventor before: Du Zhongxiao |
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