CN102373937A - 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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- CN102373937A CN102373937A CN2011102917670A CN201110291767A CN102373937A CN 102373937 A CN102373937 A CN 102373937A CN 2011102917670 A CN2011102917670 A CN 2011102917670A CN 201110291767 A CN201110291767 A CN 201110291767A CN 102373937 A CN102373937 A CN 102373937A
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Abstract
The invention relates to a rhombic hydraulic support for a pseudo-inclined down mining working surface of steep coal seam. The rhombic hydraulic support is adaptable to the characteristic of a coal mining process technique in a pseudo-inclined down arrangement manner, and is in close combination with the matching characteristic of a coal mining method and equipment through researching the movement discipline of wall rocks in a comprehensive mining process mining field and the stress condition of a comprehensive mining support under the control discipline. The rhombic hydraulic support is characterized in that: a traditional four-connecting-rod stable mechanism is divided into two parts, and at the same time, the top beam and base are designed into a rhombic-like structure, thus stable beam end distance and person walking space are formed. The rhombic hydraulic support has the characteristics that: through the development of the rhombic hydraulic support for the steep coal seam, the current mining situation of the steep coal seam is changed, the coal resources are effectively and reasonable utilized, the blank in the important supporting field of comprehensive mechanical mining of the steep coal seam is filled, a premise condition is created for achieving automatic machine tracking and other unmanned automatic working surfaces of the steep coal seam, therefore, the rhombic hydraulic support has broad application prospects.
Description
Technical field
The present invention relates to colliery underground coal mining work plane comprehensive mechanical coal mining support apparatus technical field, belong to a kind of coal mining support apparatus of steeply-inclined seam mining work plane.
Background technology
Half-edge coal seam distributes wider in China, occurrence condition is complicated, and mine quantity is many, and the exploitation difficulty is big, and a lot of major accidents have taken place in recent years.Coal Supervisory Bureau of two 〇 〇 in December, 6 country is to the lesson that major accident takes place in the difficult mining coal seam exploitation in recent years; Actively push forward the coal winning technology reform; Eliminate informal coal-mining method; Further improve half-edge coal seam safe working technology and managerial skills, for violating " safety regulations in coal mine ", the various informal coal-mining method that does not reach safety requirements should order it to stop using.To progressively eliminate wooden prop and metal mainstay supporting, improve the technology and equipment level of half-edge coal seam safe working.This invention meets the adjustment requirement of national energy security, colliery industrial policy.
China's half-edge coal seam distributes extensively; Particularly occupy absolute ratio especially at southwest, East China coal reserves; The exploitation of half-edge coal seam improves the resource recovery ratio for solving mining area exploitation continue contradiction or exploitation liberation layer, and it is significant to alleviate regional coal disparities between supply and demand.Most of mining area in domestic leading coal producing province city; For example the Nan Tong mining area of Panzhihua mining area, Guang Wang mining area, Chongqing City, mining area, the self-sufficient and strategically located region; The big portion mining area in mining area, Urumchi, Xinjiang, colliery that production and construction corps has jurisdiction over, Ai Weier ditch ore deposit, Huating mining area, Gansu, mining area, Jingyuan, Guizhou; All there are a large amount of half-edge coal seams more than 45 ° in the Shuangyashan in Heilungkiang, Qitaihe, mining area, Hegang or the like.Generally does not adopt with combining the coal seam of the high inclination-angle more than 45 ° in these mining areas, and output is generally low, and worker's labour intensity is very big, poor stability.Half-edge coal seam distributes wider in China, occurrence condition is complicated, and mine quantity is many, and the exploitation difficulty is big.Do not find that the inclination angle is greater than 45 ° of single reports that move towards longwall full-mechanized mining technique of girdle abroad yet.
Domestic many collieries all need solve girdle single the move towards longwall full-mechanized mining technique technology of adaptation greater than 45 ° of inclination angles.Steeply-inclined seam mining working space angle of inclination is big, and the equipment back skating is dangerous big, and coal mine waste rock potential threat such as splash is big, and its special difficulty is arranged; The half-edge coal seam complex structure, fold, tomography have both at the same time, and operating environment is abominable, production safety hidden danger is many; The comprehensive difficulty of adopting is big, and is high especially to the requirement of plant equipment compliance, is difficult to use existing fully-mechanized mining equipment supporting; Therefore generally adopt timber, behindhand types such as monomer carry out supporting, and personal security is difficult to guarantee; Coal-mining method falls behind, and adopts conventional equipment method exploitation half-edge coal seam, and is very difficult.Research and development can be applied to the fully-mechanized mining equipment of half-edge coal seam, realize its comprehensive mechanical coal mining and personal security, improve its output, are of great immediate significance.
Using conventional methods the exploitation of carrying out half-edge coal seam with technology has been the difficult problem that can't go beyond, does not also have effective solution.Facts have proved that the key of steeply-inclined seam mining is the compliance of equipment; Because the steeply-inclined seam mining work plane is high to the compliance requirement of coal mine machinery equipment, difficulty is big, 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 can change the current mining of half-edge coal seam, and the effective and reasonable coal resources that utilize meet the requirement of building 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 the supporting field blank.
Summary of the invention
For adapt to realizing the half-edge coal seam pseudo-tiltedly coal winning technology technical characterstic of arrangement of bowing; Research through fully mechanized mining supporter force-bearing situation under the fully mechanized mining stope country rock characteristics of motion and the control law thereof; Steeply-inclined seam mining work plane rhombus hydraulic support, the coal-mining method of combining closely and coordinative composition of equipments characteristics, the rhombus hydraulic support is split as two parts with four traditional connecting rod stabilizing mechanisms; Be diamond structure with back timber and base designs simultaneously, form stable beam-ends distance and pedestrian space.
The half-edge coal seam pseudo-tiltedly exploitation work plane of bowing is used the rhombus hydraulic support, the invention is characterized in:
The rhombus hydraulic support adapts to the half-edge coal seam pseudo-tiltedly production practice of bowing; When the fully-mechanized mining working coordinative composition of equipments, to take into full account the size matching relationship of all kinds support; Carry out the spoil protected working of cutting between eye and the work plane, for work plane provides safe and reliable working space.Pseudo-tiltedly fully-mechanized mining working has adopted the pseudo-tiltedly arrangement of bowing because half-edge coal seam is bowed, and the rhombus support need be accomplished from bottom to up order and move frame, requires the conveyer level to advance simultaneously, must not glide, and overcomes the big shifting amount that the pushing and sliding meeting produces drag conveyor simultaneously.The high-dipping hydraulic support adapts to high-dipping different angle, work plane fluctuations working face of coal seam exploitation characteristics, and the supporting structure compact is in light weight, is beneficial to and moves frame and transport operation.The half-edge coal seam pseudo-tiltedly exploitation work plane of bowing use the rhombus hydraulic support, adapts to the oblique Matching Relationship of this puppet of bowing, thereby keeps the constant distance of face roof under control.Support has the dual-use function of supporting side country rock and supported face top board, belongs to shielding, supporting type hydraulic support.
The four-bar linkage structure of hydraulic support is split as front and back two parts, and back timber and base designs are approximate diamond shape simultaneously.Two parts before and after the back timber of support and the hinge hole of caving shield are split as, caving shield is a split-type structural, the hinge hole of base and front-rear linkage is split as the front and rear part.The quadric chain that staggered by front and back of the rock-steady structure of rhombus hydraulic support is hinged like this, makes back timber top board type of being diamond shape to help reducing hydraulic support bar timbering area; Improve supporting intensity; Because the half-edge coal seam medium-height trestle receives the spoil effect that comes from the work plane upper back all the time, the quadric chain that staggers in front and back can effectively stop under the pseudo-slanted bar spare of bowing the upper back spoil to the impact of support, makes support no matter be holding state or move the frame state; The active force that acts on the rear portion protected apron can both effectively be born by column; Prevent that bracket upright post is destroyed by oblique pulling, whole frame system motion is flexible, and automaticity is high; Handiness is laborsaving, high efficiency.Because work plane top rib receives downward-sloping component bigger, be prone to cause Lou top or coal wall caving.In the steeply-inclined seam mining process, seam inclination reaches 55～69 °, upside spoil coal cinder tumble serious threat work plane lower direction personal security, the high_dipping face hydraulic support is in instability status under free state, phenomenon occurs toppling over.When work plane is pressed, because the motion of top, base plate also is prone to produce unstability, the phenomenon of falling the frame, or abnormal operating state occurs.The base contact base areas of rhombus hydraulic support is big, and structure adaptability is strong, its good stability.
Through mine pressure law in the research steeply-inclined seam mining; Improve the compliance of fully-mechanized mining working corollary equipment, effect characteristics, the stress of clear and definite half-edge coal seam support and country rock relation, perfect rhombus support calculating country rock stress model; The upgrading that is developed as the backward production practice of half-edge coal seam of half-edge coal seam rhombus comprehensive mining hydraulic bracket; Realize that comprehensive the adopting of half-edge coal seam provides technology and material guarantee, satisfied the raising requirement of half-edge coal seam comprehensive mechanized coal mining method, in 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, solves the comprehensive key technical problem of adopting of half-edge coal seam perfectly, comprise the fully-mechanized mining working personal security from technology and technical equipment; Conveyer is passed automatically; Hydraulic support moves frame, realizes the cycle operation of half-edge coal seam fully-mechanized mining working, for half-edge coal seam is realized creating the prerequisite material conditions with unmanned automatically working faces such as machines automatically.
Description of drawings
Fig. 1 is a 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 vertical view of half-edge coal seam rhombus comprehensive mining hydraulic bracket.
Fig. 4 is that half-edge coal seam rhombus comprehensive mining hydraulic bracket comprehensive adopted supporting vertical view.
Fig. 5 is the back timber and the column assembling sketch map of half-edge coal seam rhombus comprehensive mining hydraulic bracket.
Wherein 1: back timber, 2: column, 3: the balance adjustment oil cylinder, 4: caving shield, 5: base, 6: front rod, 7: back link, 8: conveyer is regulated oil cylinder, 9: side guard board.
The specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, shown in Figure 5: half-edge coal seam is bowed pseudo-tiltedly exploitation work plane with half-edge coal seam rhombus hydraulic support; Mainly comprise back timber 1 and base 5 that column and two ends thereof are hinged respectively; Column 2 makes the maximum height of support reach designing requirement; Support cylinder 2 adopts 2, and layout was opened in two misarrangements before and after 2 root posts became; The back timber of Fig. 2 and Fig. 3 rhombus comprehensive mining hydraulic bracket and base vertical view back timber and base be type of being designed to diamond structure all; About hinged with it four connecting rod stabilizing mechanisms thereupon the changing of the relative positions be the front and rear part; Back timber and base are arranged the maximization that has realized supporting intensity by means of the front and back changing of the relative positions of four connecting rod rock-steady structures, effectively stop top spoil scurrying in moving the frame process simultaneously.Back timber 1 sidepiece is provided with side guard board 9, supplies sealing and anti-down usefulness between frame; 8 conveyers are regulated oil cylinder and are realized conveyer anti-skidding position adjustment; Fig. 4 half-edge coal seam rhombus comprehensive mining hydraulic bracket comprehensive adopted supporting vertical view.
This half-edge coal seam rhombus comprehensive mining hydraulic bracket has common four connecting rods shielding hydraulic support characteristics and performance; For half-edge coal seam comprehensive mechanization safety and high efficiency provides condition; Realize the adjustment of support state through the adjusting devices such as balance adjustment 3 that are articulated in back timber and caving shield, increased stabilizing mechanism intensity, back timber is designed to rhombus and guarantees that stable beam-ends is apart from preventing the wall caving roof fall; Base designs is that rhombus has kept the unimpeded of the anterior walkway of hydraulic support; Increase the face-airing section, reduce the work plane windage, be the face gas dilution, enhancing productivity provides basic assurance, helps work plane and realizes safe and efficient production;
Claims (4)
1. the half-edge coal seam pseudo-tiltedly exploitation work plane rhombus hydraulic support of bowing is characterized in that:
Hydraulic support is by back timber, base, and direct compositions such as caving shield between connection and back timber and the base, and the quadric chain of support rock-steady structure is split as front and back two parts; Hydraulic support has two support cylinder supporting top beams of two rows, and top beam rear end and caving shield are hinged, and caving shield lower end and base rear portion are hinged, and back timber is hinged with connecting portion through regulating oil cylinder (balance jack), to be used for adjusting the set cap state; This back timber is a diamond structure; Back timber and base vertical view back timber and base be type of being designed to diamond structure all; About hinged with it four connecting rod stabilizing mechanisms thereupon the changing of the relative positions be the front and rear part; Back timber and base are arranged the maximization that has realized supporting intensity by means of the front and back changing of the relative positions of four connecting rod rock-steady structures, effectively stop top spoil scurrying in moving the frame process simultaneously; Caving shield and front-rear linkage are split as the front and back two parts that adapt to back timber and base and divide body structure, and two parts can bilateral symmetry or asymmetricly all can; Four connecting rod rock-steady structures also can the not changing of the relative positions arrange and only back timber be rhombus with base designs, half-edge coal seam rhombus comprehensive mining hydraulic bracket integral central distance can be adjusted with the conveyer chute.
2. half-edge coal seam rhombus comprehensive mining hydraulic bracket structure as claimed in claim 1 is characterized in that: back timber and base type of being diamond structure, and the comprehensive mining hydraulic bracket left-right and front-back connecting rod certain distance that staggered before and after being;
Back timber and base are the wedge structures, form stable beam section distance and consistent pedestrian space to cooperate the high-dipping fully mechanized mining.
3. comprehensive mining hydraulic bracket structure as claimed in claim 1 is characterized in that: the adjusting oil cylinder (balance jack) between hinged and back timber and caving shield is arranged in the middle part or the both sides of rhombus support.
4. comprehensive mining hydraulic bracket structure as claimed in claim 1 is characterized in that: described half-edge coal seam rhombus comprehensive mining hydraulic bracket back timber and caving shield can be provided with one-sided, bilateral side guard board.
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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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Cited By (5)
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|---|---|---|---|---|
| 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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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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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| CN102373937B (en) | 2016-06-29 |
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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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