CN104453902A - Method for switching coal face from false vertical dip mining into true inclination mining - Google Patents

Method for switching coal face from false vertical dip mining into true inclination mining Download PDF

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Publication number
CN104453902A
CN104453902A CN201410673107.2A CN201410673107A CN104453902A CN 104453902 A CN104453902 A CN 104453902A CN 201410673107 A CN201410673107 A CN 201410673107A CN 104453902 A CN104453902 A CN 104453902A
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China
Prior art keywords
coal
face
true dip
roof
initial
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Pending
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CN201410673107.2A
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Chinese (zh)
Inventor
周忠国
王显银
王灿华
梁立勋
贺华茂
冯宗华
李健
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Colliery Huaying Hill Coal Industry Ltd Co Clear Water Hole Sichuan Province
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Colliery Huaying Hill Coal Industry Ltd Co Clear Water Hole Sichuan Province
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Application filed by Colliery Huaying Hill Coal Industry Ltd Co Clear Water Hole Sichuan Province filed Critical Colliery Huaying Hill Coal Industry Ltd Co Clear Water Hole Sichuan Province
Priority to CN201410673107.2A priority Critical patent/CN104453902A/en
Publication of CN104453902A publication Critical patent/CN104453902A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21CMINING OR QUARRYING
    • E21C41/00Methods of underground or surface mining; Layouts therefor
    • E21C41/16Methods of underground mining; Layouts therefor
    • E21C41/18Methods of underground mining; Layouts therefor for brown or hard coal

Abstract

The invention discloses a method for switching a coal face from false vertical dip mining into true inclination mining. The method comprises the following steps: 1, an open-off cut initial arrangement mode is determined, to be specific, the design and arrangement are realized under a false vertical dip arrangement state according to a false inclination angle which is 25 to 30% of the true inclination length of an air way advancing belt transporter tunnel; a working face roof is supported by sections, wherein the support for the roof at the first section is designed and controlled according to the true inclination length and the support in the whole section is performed by hydraulic brackets, the support for the roof at the second section is performed by single hydraulic supporting columns in match with steel beams, and dense supporting columns are arranged on the goaf side to prevent rock from moving all round, the caved coal and rock are transported by a mode that scraper conveyers are arranged in the full length or the upper section is equipped with the scraper conveyers which are matched with the hydraulic brackets in the mounting length, and while the lower section is equipped with enameled troughs in an erection and subsection manner; 2, during the extracting stage at a transition area and a triangular transition area, a machine head is pushed more frequently than a machine tail, and the adjusting and arranging of the brackets are enhanced. With the adoption of the method, the coal face can be in transition switching from the initial false vertical dip arranging state into the true inclination state after being moved in 15 to 20m.

Description

A kind of method that coal-face pseudo discrete state model switches to true dip to exploit
Technical field
The present invention relates to a kind of coal-face coal-mining method switching mode, particularly a kind of coal-face pseudo discrete state model method of switching to true dip to exploit.
Background technology
When half-edge coal seam (seam inclination more than 45 °) coal-face adopts and moves towards the coal-mining method back production of longwell retrusive, if open-off cut adopts true dip to arrange, because seam inclination is large, construct very difficult, security threat is large, adopt tradition from bottom to top development blasting become lane, have that material installation upper and lower porter muscle power expends greatly, wall caving fly that cash rolls that cash is hurted sb.'s feelings, personnel easily slip and falls, supporting time erect-position location difficulty, the problem such as digging footage is low, the construction period is longer.Realize half-edge coal seam initial channel to be formed safely and fast, must start with study from the arrangement of work plane open-off cut, seeking a kind of comparatively safe efficient mode is that coal-face realizes back production as early as possible and creates favorable conditions.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of method that coal-face pseudo discrete state model switches to true dip to exploit is provided, it is simple to operate, safe and efficient, effectively can solve half-edge coal seam initial open-off cut construction safety and threaten large, wall caving to fly the practical problems such as cash is hurted sb.'s feelings, supporting difficulty is large.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method that coal-face pseudo discrete state model switches to true dip to exploit, and it is characterized in that the method comprises the following steps.
Step one, initial open-off cut arrangement are determined: the initial open-off cut of coal-face adopts puppet oblique mode of bowing to arrange, i.e. work plane air way advanced machine lane certain distance, face roof supporting adopts sectional supporting mode, first paragraph all adopts hydraulic support to carry out supporting to top board, second segment adopts hydraulic prop to join girder steel supporting, and goaf side establishes close standing props to prevent from altering cash.The transport of work plane bastard coal can be adopted in two ways, and one is that drag conveyor total length is arranged, advantage is that coal-winning machine whole process has walking track, export up and down and all can cut through, without the need to manually opening side, shortcoming is the carrying out along with back production, work plane shortens gradually, and drag conveyor needs reduction in time; Another kind is step-by-step arrangement, namely epimere adopts drag conveyor, hypomere adopts and sets up enameled trough, advantage only reclaims enameled trough without the need to reducing the middle pan of scraper conveyor, working strength is slightly smaller, shortcoming is that coal-winning machine cannot cut through work plane hypomere for some time, need adopt manually to open side and blow out mode process.
Step 2, the back production of transitional region: after work plane arranges installation, enter transition recovery phase, first paragraph (adopt hydraulic support stand section) carries out coal cutting in the usual way, coalings, pushing and sliding, move frame etc., note adjusting frame, prevent from occurring between hydraulic support stinging frame, backrest, squeezing frame and downslide, second segment (hydraulic prop joins girder steel supporting section) is pushed ahead along with work plane and constantly shortens, and roof timbering region reduces gradually, until terminate.Starting stage many fly downs, push away tail less, to adjust working surface angle gradually, after advance of the face certain distance, are namely bowed by initial puppet and tiltedly arrange that furnishing true dip is arranged, enter true dip recovery phase, realize transition and switch.
The method that above-mentioned a kind of coal-face pseudo discrete state model switches to true dip to exploit, it is characterized in that: the initial open-off cut of coal-face adopts puppet to bow oblique arrangement, press the pseudo-rake angle design arrangement work plane of 25% ~ 30% of air way advanced machine lane true dip length, the initial open-off cut inclination angle of relative reduction half-edge coal seam, reduces equipment and installs degree of difficulty.
The method that above-mentioned a kind of coal-face pseudo discrete state model switches to true dip to exploit, it is characterized in that: during initial placement, top board adopts sectional supporting, first paragraph is undertaken designing and controlling by coal-face true dip length, whole employing hydraulic support carries out supporting to top board, so that the later stage enters true dip recovery phase and need not withdraw hydraulic support, second segment employing hydraulic prop is joined girder steel and is carried out supporting to top board, and goaf side establishes close standing props to prevent from altering cash.
The method that above-mentioned a kind of coal-face pseudo discrete state model switches to true dip to exploit, it is characterized in that: during initial placement, coal-face bastard coal means of transportation adopts total length to arrange or step-by-step arrangement, when total length is arranged, drag conveyor is simultaneously double does coal-winning machine walking track, the logical coal that lancinates can be realized, during step-by-step arrangement, epimere adopts and installs the supporting drag conveyor of length with hydraulic support, hypomere adopts and sets up enameled trough, need not reduce the middle pan of scraper conveyor, but hypomere manually need open side.
The method that above-mentioned a kind of coal-face pseudo discrete state model switches to true dip to exploit, it is characterized in that: coal-face transition recovery phase, many fly downs, push away tail less, add and emphasize frame, framed bent, realize exploiting transition by pseudo discrete state model to true dip after the advance of the face 15 ~ 20m and switch.
The present invention compared with prior art has the following advantages: can realize pseudo discrete state model transition and switch to true dip mining type, simple to operate, safe and efficient, reduce initial open-off cut difficulty of construction and security threat, effective solution wall caving flies the problems such as cash is hurted sb.'s feelings, supporting difficulty is large, significantly reduce accident rate, ensure that production efficiency and construction speed.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is that pseudo discrete state model of the present invention switches to true dip to exploit schematic diagram.
Number in the figure: 1 puppet is bowed oblique arrangement states; 2 one sections of roof timberings; 3 two sections of roof timberings; 4 one sections of transports; 5 two sections of transports; 6 true dip states; 7 air ways; 8 machine lanes; 9 transitional regions; 10 triangle transitional regions; 11 back production regions.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated, but therefore do not limit the present invention among described scope of embodiments.
As shown in Figure 1, a kind of method that coal-face pseudo discrete state model switches to true dip to exploit, its method comprises the following steps.
Step one, initial open-off cut arrangement are determined: the initial open-off cut of coal-face adopts puppet to bow oblique arrangement states 1, i.e. work plane air way 7 advanced machine lane 8 certain distance, face roof supporting adopts sectional supporting mode, one section of roof timbering 2 all adopts hydraulic support, two sections of roof timberings 3 adopt hydraulic prop to join girder steel, and goaf side establishes close standing props to prevent from altering cash.The transport of work plane bastard coal can be adopted in two ways, and one is that total length is arranged, advantage is that coal-winning machine whole process has walking track, export up and down and all can cut through, without the need to manually opening side, shortcoming is the carrying out along with back production, work plane shortens gradually, and drag conveyor needs reduction in time; Another kind is step-by-step arrangement, and advantage only reclaims enameled trough without the need to reducing the middle pan of scraper conveyor, and working strength is slightly smaller, and shortcoming is that coal-winning machine cannot cut through work plane hypomere for some time, need adopt manually to open side and blow out mode process.
Step 2, the back production of transitional region: after work plane arranges installation, enter transition recovery phase, transitional region 9 is carried out coal cutting in the usual way, is coaling, pushing and sliding, move frame etc., note adjusting frame, prevent from occurring between hydraulic support stinging frame, backrest, squeezing frame and downslide, triangle transitional region 10 is pushed ahead along with work plane and constantly shortens, and roof timbering region reduces gradually, until terminate.Starting stage many fly downs, push away tail less, to adjust working surface angle gradually, after advance of the face certain distance, namely to be bowed oblique arrangement states 1 furnishing true dip state 6 by initial puppet, enter true dip back production region 11, realize transition and switch.
In the present embodiment, described puppet bow oblique arrangement states 1 by air way 7 advanced machine lane 8 true dip length 30% pseudo-rake angle design arrangement work plane, relatively reduce the initial open-off cut inclination angle of half-edge coal seam, reduce equipment and degree of difficulty is installed.
In the present embodiment, described one section of transport 4 and two sections of transports 5 adopt total length to arrange, all adopt drag conveyor to carry out bastard coal transport, and when total length is arranged, drag conveyor is simultaneously double does coal-winning machine walking track, can realize the logical coal that lancinates, the reduction employing of the middle pan of scraper conveyor is special prolongs compression apparatus process.
In the present embodiment, described transitional region 9, triangle transitional region 10 recovery phase, many fly downs, push away tail less, add and emphasize frame, framed bent, realize being switched to the transition of true dip state 6 by initial puppet oblique arrangement states 1 of bowing after advance of the face 15m.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all belong in the protection domain of technical solution of the present invention.

Claims (5)

1. the coal-face pseudo discrete state model method that switches to true dip to exploit, is characterized in that the method comprises the following steps:
Step one, initial open-off cut arrangement are determined: the initial open-off cut of coal-face adopts puppet to bow oblique arrangement states (1), i.e. advanced machine lane (8) certain distance of work plane air way (7), face roof supporting adopts sectional supporting mode, one section of roof timbering (2) all adopts hydraulic support, two sections of roof timberings (3) adopt hydraulic prop to join girder steel, and goaf side establishes close standing props to prevent from altering cash; The transport of work plane bastard coal can be adopted in two ways, and one is that total length is arranged, advantage is that coal-winning machine whole process has walking track, export up and down and all can cut through, without the need to manually opening side, shortcoming is the carrying out along with back production, work plane shortens gradually, and drag conveyor needs reduction in time; Another kind is step-by-step arrangement, and advantage only reclaims enameled trough without the need to reducing the middle pan of scraper conveyor, and working strength is slightly smaller, and shortcoming is that coal-winning machine cannot cut through work plane hypomere for some time, need adopt manually to open side and blow out mode process; Step 2, the back production of transitional region: after work plane arranges installation, enter transition recovery phase, transitional region (9) is carried out coal cutting in the usual way, is coaling, pushing and sliding, move frame etc., note adjusting frame, prevent from occurring between hydraulic support stinging frame, backrest, squeezing frame and downslide, triangle transitional region (10) is pushed ahead along with work plane and constantly shortens, and roof timbering region reduces gradually, until terminate; Starting stage many fly downs, push away tail less, to adjust working surface angle gradually, after advance of the face certain distance, namely to be bowed oblique arrangement states (1) furnishing true dip state (6) by initial puppet, enter true dip back production region (11), realize transition and switch.
2. a kind of coal-face pseudo discrete state model according to claim 1 method of switching to true dip to exploit, it is characterized in that the initial open-off cut of coal-face adopts puppet to bow oblique arrangement states (1), press the pseudo-rake angle design arrangement work plane of 25% ~ 30% of advanced machine lane (8) the true dip length of air way (7), the initial open-off cut inclination angle of relative reduction half-edge coal seam, reduces equipment and installs degree of difficulty.
3. a kind of coal-face pseudo discrete state model according to claim 1 method of switching to true dip to exploit, it is characterized in that initial puppet bow oblique arrangement states (1) time top board adopt sectional supporting, one section of roof timbering (2) is undertaken designing and controlling by coal-face true dip length, whole employing hydraulic support, so that the later stage enters true dip recovery phase and need not withdraw hydraulic support, two sections of roof timberings (3) adopt hydraulic prop to join girder steel, and goaf side establishes close standing props to prevent from altering cash.
4. a kind of coal-face pseudo discrete state model according to claim 1 method of switching to true dip to exploit, it is characterized in that initial puppet bow oblique arrangement states (1) time coal-face bastard coal means of transportation one section of transport (4) and two sections of transports (5) adopt total lengths to arrange or step-by-step arrangement, when total length is arranged, drag conveyor is simultaneously double does coal-winning machine walking track, the logical coal that lancinates can be realized, during step-by-step arrangement, one section of transport (4) adopts and installs the supporting drag conveyor of length with hydraulic support, two sections of transport (5) employings set up enameled trough, the middle pan of scraper conveyor need not be reduced, but hypomere manually need open side.
5. a kind of coal-face pseudo discrete state model according to claim 1 method of switching to true dip to exploit, it is characterized in that transitional region (9), triangle transitional region (10) recovery phase, many fly downs, push away tail less, add and emphasize frame, framed bent, realize after the advance of the face 15 ~ 20m being switched to the transition of true dip state (6) by initial puppet oblique arrangement states (1) of bowing.
CN201410673107.2A 2014-11-23 2014-11-23 Method for switching coal face from false vertical dip mining into true inclination mining Pending CN104453902A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104929642A (en) * 2015-06-03 2015-09-23 西安科技大学 Top coal caving quantity regional control method for variable angle fully mechanized caving face of steeply dipping seam
CN105649628A (en) * 2016-01-15 2016-06-08 西安科技大学 False-inclined inclination-angle-variable arrangement method for large-dip-angle coal seam angle-variable fully-mechanized coal mining/caving working face
CN106523010A (en) * 2015-09-15 2017-03-22 四川达竹煤电(集团)有限责任公司金刚煤矿 Steeply-inclined coal seam working face and coal mining method
CN108374660A (en) * 2018-03-26 2018-08-07 四川川煤华荣能源股份有限公司 Face in steep thick coal seam recovery method
CN110130894A (en) * 2019-05-21 2019-08-16 山东东山新驿煤矿有限公司 A kind of abnormity working face equipment installation method

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CN103321642A (en) * 2013-05-06 2013-09-25 中国矿业大学 Gob-side entry retaining adjoining rock stabilizing method based on lateral rock formation pre-splitting control
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104929642A (en) * 2015-06-03 2015-09-23 西安科技大学 Top coal caving quantity regional control method for variable angle fully mechanized caving face of steeply dipping seam
CN104929642B (en) * 2015-06-03 2017-05-10 西安科技大学 Top coal caving quantity regional control method for variable angle fully mechanized caving face of steeply dipping seam
CN106523010A (en) * 2015-09-15 2017-03-22 四川达竹煤电(集团)有限责任公司金刚煤矿 Steeply-inclined coal seam working face and coal mining method
CN106523010B (en) * 2015-09-15 2019-01-18 四川达竹煤电(集团)有限责任公司金刚煤矿 Half-edge coal seam coal working face and coal-mining method
CN105649628A (en) * 2016-01-15 2016-06-08 西安科技大学 False-inclined inclination-angle-variable arrangement method for large-dip-angle coal seam angle-variable fully-mechanized coal mining/caving working face
CN105649628B (en) * 2016-01-15 2018-07-10 西安科技大学 The large-inclination-angle coal bed comprehensive coal mining caving working face puppet of varied angle, which is faced upward, tiltedly becomes inclination angle method for arranging
CN108374660A (en) * 2018-03-26 2018-08-07 四川川煤华荣能源股份有限公司 Face in steep thick coal seam recovery method
CN110130894A (en) * 2019-05-21 2019-08-16 山东东山新驿煤矿有限公司 A kind of abnormity working face equipment installation method
CN110130894B (en) * 2019-05-21 2020-12-11 山东东山新驿煤矿有限公司 Method for installing special-shaped working face equipment

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Application publication date: 20150325