CN102877847B - Method for tunneling open-off cut expansion opening section of fully mechanized coal mining face - Google Patents
Method for tunneling open-off cut expansion opening section of fully mechanized coal mining face Download PDFInfo
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- CN102877847B CN102877847B CN201210357147.7A CN201210357147A CN102877847B CN 102877847 B CN102877847 B CN 102877847B CN 201210357147 A CN201210357147 A CN 201210357147A CN 102877847 B CN102877847 B CN 102877847B
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Abstract
The invention relates to a mine underground roadway tunneling technology, aims to solve the problem that during open-off cut expansion opening of a fully mechanized coal mining face of mine, the tunneling speed is influenced because a scraper conveyer cannot be paved, and a reversed loader cannot be installed, and provides a method for tunneling an open-off cut expansion opening section of the fully mechanized coal mining face. According to the method, the whole open-off cut construction method is divided into three parts, namely a forward-direction tunneling section, an inclined cutting expansion section and a reverse-direction expansion section; the method comprises the following steps of: (1) constructing the forward-direction tunneling section by a tunneling machine, and retreating the tunneling machine; (2) cutting into the inclined cutting expansion section by the tunneling machine slantly for tunneling; and (3) changing the direction of the tunneling machine, expanding the scraper conveyer, paving the reversed loader again, and finally tunneling the reverse-direction expansion section. Compared with the prior art, the method has the advantages that the construction period is shortened, the labor intensity of workers is reduced, and the tunneling efficiency is improved.
Description
Technical field
The present invention relates to a kind of coal mine down-hole tunnel driving technology, specifically a kind of point of cutting of coal face expands side open section driving method.
Background technology
Point of cutting of coal face width is larger, generally takes to lead cave and expand side secondary and become the tunneling method in lane, cut eye construction and be generally pick and cut an opening---normal construction is led cave---and put in place and retreat machine, then opening expands side again.The drawback of this technique cannot be installed drag conveyor and elevating conveyor for cutting when eye expands side opening, can only be by manually hoveling coal from one place to another, and labor strength is large, and construction is slowly.
Summary of the invention
When the present invention cuts eye expansion side opening in order to solve coal mine fully-mechanized mining working, cannot lay drag conveyor and elevating conveyor is installed, and then affecting the problem of driving speed, providing a kind of point of cutting of coal face to expand side open section driving method.
For addressing the above problem, the technical solution used in the present invention is:
Point of cutting of coal face expands side open section driving method, cut eye construction and be divided into forward driving section, cut sth. askew and expand side section and oppositely expand 3 parts of side section whole, comprise step: the complete machine that retreats of (1) development machine construction forward driving section, (2) the oblique incision of development machine is cut sth. askew and is expanded side section driving, (3) the development machine direction of turning round, extension screed conveyer, lays elevating conveyor again, and finally driving oppositely expands side section.
The construction method that working face open-off cut eye expands side open section is the key factor that a speed of application is cut in impact, the present invention expands side open section driving by point of cutting of coal face and is divided into 3 stages, do not need opening wall supporting again, all tunnel with development machine, loaded down with trivial details construction sequence when having saved again opening and expanding side, has eliminated and has expanded the side initial stage and manually hovel coal from one place to another and elevating conveyor is not installed and need the situation of every class continued access drag conveyor.
Compared with prior art, adopt the present invention can make driving speed keep normal condition, within about 2 days, carry out routine driving, shortened thus the construction period, alleviated workman's labour intensity, improved drivage efficiency.The present invention is applicable to adopt the working face open-off cut eye construction of comprehensive mechanized driving production line.
Brief description of the drawings
Fig. 1 expands side section construction schematic diagram for cutting sth. askew
Fig. 2 oppositely expands side section construction schematic diagram
In figure, 1-forward driving section, 2-cuts sth. askew and expands side section, and 3-oppositely expands side section, 4-development machine, 5-drag conveyor, 6-elevating conveyor, 7-aperture lines.
Detailed description of the invention
Below in conjunction with accompanying drawing, the claimed technical scheme of the present invention is illustrated.
Point of cutting of coal face of the present invention expands side open section driving method, will wholely cut eye construction and be divided into forward driving section 1, cuts sth. askew and expand side section 2 and oppositely expand side section 3 three parts, comprises step:
(1) the development machine 4 forward driving section 1 complete machine that retreats of constructing,
Forward driving section 1 is the cave of leading of linking up construct complete return airway and air intake lane, in forward driving section, after pick is cut eye and another roadway linking put in place, lead after cave connects with constructed complete return airway or air intake lane, development machine 4 is moved back to 40 meters, machine in forward driving section.
(2) the oblique incision of development machine 2 is cut sth. askew and is expanded side section 2 drivings, as shown in Figure 1,
For ensureing stability of cavern roof when opening, the top board fore shaft anchor cable of first constructing before oblique incision, along aperture lines 7 from opening part to 10 of top board construction fore shaft anchor cables, anchor cable spacing 1.5m.Anchor cable length is determined according to top board lithology.
Dou cuts and expands side section 2 middle parts in forward driving section one side to afterbody, the oblique incision expansion of development machine 4 side side starts to cut sth. askew to expand and helps section 2 to construct, reprint and the corner of development machine 4 for ease of producing coal and considering, the opening angle of development machine 4 oblique incisions is 60 degree, after incision, return positive direction along aperture lines gradually again and continue driving, put in place until expand side.
(3) development machine 4 directions of turning round, extension screed conveyer 5, lays elevating conveyor 6 again, and finally driving oppositely expands side section 3, as shown in Figure 2,
Oppositely expand side section 3 and expand the front portion of side section the same side cutting sth. askew, development machine 4 is clubhauled after removing elevating conveyor 6 at the end of a lane, development machine 4 leaves to reverse expansion side section 3 work planes and meets head on.
Oppositely expanding side section 3 starts before driving, drag conveyor trough overlap joint in extension screed conveyer 5 troughs and another tunnel, with the return airway of having constructed or air intake lane in drag conveyor trough overlap joint, at the rear installation elevating conveyor 6 of development machine 4 and be inclined cross on drag conveyor 5 and start oppositely to expand 3 constructions of side section, until cut eye, to expand side open section construction complete.
Claims (1)
1. point of cutting of coal face expands side open section driving method, it is characterized in that cutting eye construction and being divided into forward driving section (1), cutting sth. askew and expand side section (2) and oppositely expand side section (3) three parts whole, comprise step: (1) development machine (4) construction forward driving section 1 complete machine that retreats, (2) the oblique incision of development machine (4) is cut sth. askew and is expanded side section (2) driving, (3) development machine (4) direction of turning round, extension screed conveyer (5), again lay elevating conveyor (6), finally driving oppositely expands side section (3); In step (1), in forward driving section, pick is moved back 40 meters, machine by development machine (4) after cutting eye and putting in place with another roadway linking; Front in construction sequence (2), the top board fore shaft anchor cable of first constructing, along aperture lines from opening part to 10 of top board construction fore shaft anchor cables, anchor cable spacing 1.5m; In step (2), the opening angle of the oblique incision of development machine (4) is 60 degree; In step (3), oppositely expanding side section starts before driving, drag conveyor trough in extension screed conveyer (5) trough and another tunnel overlap joint is installed elevating conveyor (6) and is inclined cross and on drag conveyor (5), starts oppositely to expand side section construction after development machine (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210357147.7A CN102877847B (en) | 2012-09-24 | 2012-09-24 | Method for tunneling open-off cut expansion opening section of fully mechanized coal mining face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210357147.7A CN102877847B (en) | 2012-09-24 | 2012-09-24 | Method for tunneling open-off cut expansion opening section of fully mechanized coal mining face |
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| CN102877847A CN102877847A (en) | 2013-01-16 |
| CN102877847B true CN102877847B (en) | 2014-11-19 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265319B (en) * | 2014-09-15 | 2017-06-16 | 中国神华能源股份有限公司 | A kind of construction method that eye is cut for constructing |
| CN106351663A (en) * | 2016-09-29 | 2017-01-25 | 淮南矿业(集团)有限责任公司 | Retrograde brush expansion process for cut construction |
| CN106939795B (en) * | 2017-05-02 | 2019-08-20 | 中国神华能源股份有限公司 | Thin bedrock high-seam working face large section cuts the method for protecting support of eye |
| CN109519187B (en) * | 2018-12-17 | 2020-02-21 | 中煤华晋集团有限公司 | Construction process for cutting and tunneling |
| CN110748352B (en) * | 2019-10-17 | 2021-12-03 | 山西晋城无烟煤矿业集团有限责任公司 | Construction method suitable for rapid hole cutting and enlarging |
| CN111691886B (en) * | 2020-06-23 | 2021-08-31 | 国家能源集团宁夏煤业有限责任公司 | Construction method for opening cutting hole by fully-mechanized coal mining machine in fully-mechanized coal mining face |
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| RU2247242C1 (en) * | 2003-07-22 | 2005-02-27 | ОАО "Уральский научно-исследовательский и проектный институт галургии" (ОАО "Галургия") | Method for preparation of mineral resources deposits to reversed extraction order |
| CN101832138A (en) * | 2010-03-29 | 2010-09-15 | 中国矿业大学(北京) | Method for controlling rising type reverse-obliquity mining rock stratum of ultra-thick highly-oblique coal bed |
| CN102505942A (en) * | 2011-11-11 | 2012-06-20 | 山西晋城无烟煤矿业集团有限责任公司 | Safe and fast driving method for large-section open-off cut time-by-time tunneling |
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- 2012-09-24 CN CN201210357147.7A patent/CN102877847B/en active Active
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| RU2247242C1 (en) * | 2003-07-22 | 2005-02-27 | ОАО "Уральский научно-исследовательский и проектный институт галургии" (ОАО "Галургия") | Method for preparation of mineral resources deposits to reversed extraction order |
| CN101832138A (en) * | 2010-03-29 | 2010-09-15 | 中国矿业大学(北京) | Method for controlling rising type reverse-obliquity mining rock stratum of ultra-thick highly-oblique coal bed |
| CN102505942A (en) * | 2011-11-11 | 2012-06-20 | 山西晋城无烟煤矿业集团有限责任公司 | Safe and fast driving method for large-section open-off cut time-by-time tunneling |
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