CN102213102B - Method for righting toppled brackets of large-inclined-angle working surface - Google Patents
Method for righting toppled brackets of large-inclined-angle working surface Download PDFInfo
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- CN102213102B CN102213102B CN2011101508830A CN201110150883A CN102213102B CN 102213102 B CN102213102 B CN 102213102B CN 2011101508830 A CN2011101508830 A CN 2011101508830A CN 201110150883 A CN201110150883 A CN 201110150883A CN 102213102 B CN102213102 B CN 102213102B
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Abstract
The invention discloses a method for righting toppled brackets of a large-inclined-angle working surface. The method comprises the following steps of: in a toppling range, starting from the first toppled bracket which is inclined upwards along the working surface, inserting anchor rods in a centralized mode into a coal seam bottom plate on a coal wall side, which is inclined upwards along the working surface, of each toppled bracket, so as to form an anchor rod group; arranging a hydraulic oil cylinder at an exposed position of the anchor rod group, wherein one end of a cylinder body of the hydraulic oil cylinder is fixed at an exposed end of the anchor rod group, and one end of a piston rod is connected with the corresponding toppled bracket by an anchor chain; and righting the toppled brackets one by one by using the hydraulic oil cylinder until all toppled brackets are in a normal state. By using the anchor rods which are inserted into the bottom plate on the coal wall side of the working surface as an external force device, influence on a normal bracket above the toppled brackets during the righting of the toppled brackets is eliminated; and by using the hydraulic oil cylinder with sufficient power as the external force device, operation is simple, the anchor chain is only required to be fixed on the bracket to be righted during the righting of the toppled brackets every time, a security coefficient is high, and the complexity of operation of a plurality of single columns or jacks is reduced.
Description
Technical field
The present invention relates to a kind of large inclination working surface steady of falling frame method, be particularly useful for inclination alpha and be the steady that 20 ° ~ 35 ° large inclination working surface hydraulic support is toppled over, also be applicable to the steady that inclination alpha is toppled over less than 20 ° of inclination angle working surface hydraulic supports.
Background technology
In inclination alpha was 20 ° ~ 35 ° large inclination working surface comprehensive mechanization process for stoping, owing to be subjected to the large impact in inclination angle, frame very easily occured down in work plane, and this not only has a strong impact on the normal production of work plane, and deals with unusual difficult.Therefore, working face equipment anti-down, anti-skidding and the treatment measures behind the frame of falling are the difficult problems of the normal exploitation of puzzlement large inclination working surface always
At present, China's coal-mine mainly adopts following methods to carry out steady in large inclination working surface when falling the frame: 1, utilize several hydraulic single props to withstand on to fall the appropriate location of support, force steady, support is aligned; 2, utilize anti-down jack steady, jack one end is fixed on the normal support in top, the other end is fastened by chain and is being held up under the front-axle beam of support, reaches the purpose of transferring frame, steady by the tension jack; 3, utilize anti-down jack and individual prop associating steady.
Above-mentioned steady way can obtain certain effect when solving single support tilt, but operation is loaded down with trivial details, efficient is low, can not thoroughly solve large inclination working surface steady problem, be mainly reflected in: 1, utilizing individual prop, anti-down jack to transfer the frame steady all is to finish between frame, depend on to a great extent the stability state of the normal support in top, security reliability is poor; 2, the number of hydraulic prop, jack needs is difficult to determine that safety factor is low that poor operability can't be promoted the use of.
Summary of the invention
Technical problem: the objective of the invention is to overcome the weak point in the prior art, provide a kind of method simple, safe and reliable, the steady of falling frame method occurs in the large inclination working surface that efficient is high.
Technical scheme: the large inclination working surface steady of falling frame method of the present invention:
A. in the scope of falling the frame, topple over support along upwards first of work plane tendency and begin, topple over support at each and concentrate to squeeze in along work plane tendency rib side upwards toward seat earth and be no less than 5 anchor pole, the formation Bolt Groups;
B. in the exposed junction position of Bolt Groups hydraulic jack is installed, cylinder body one end of hydraulic jack is fixed on the exposed junction of Bolt Groups, and piston rod one end is connected with the support of toppling over of opposite position by anchor chain;
C. from first topples over support, the pulling force by hydraulic jack is pulled upwardly toppling over set cap by force, in the process of pull-up, the side guard board that to topple on the support is opened, utilize side guard board thrust to raise and topple over support, until topple over after support moves the position to, regain side guard board;
D. repeating step b, c topple over support to each one by one by hydraulic jack and carry out righting, until righting all topple over support, take off hydraulic jack.
Described Bolt Groups is 2 ~ 4m to the distance of toppling over support of opposite position; Described anchor pole is that length is not less than the Bolt with Full Screw Threads and Equal Strength that 2.2m, diameter are not less than 18mm; The pulling force of described hydraulic jack is that 500kN, piston stroke are 2.0m.
Beneficial effect: utilize toward the base plate of working face wall side and beat anchor pole as the origin of force of external force means, when having eliminated steady on the impact of the normal support in top; As external force means, not only simple to operate by the hydraulic jack of power abundance, each steady only need to be fixed on anchor chain on the support of wanting righting and get final product, and the safety factor height, has reduced the complexity that operates many individual props or jack.The method is workable, and is safe and reliable, and steady efficient is high, and is effective, has widely practicality.
Description of drawings
Fig. 1 is position view of the present invention;
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Among the figure: 1-working face wall side base plate, 2-Bolt Groups exposed junction, the 3-anchor pole, the 4-hydraulic jack, the 5-anchor chain, 6-topples over support.
The specific embodiment
As shown in Figure 1 and Figure 2, at first in inclination alpha is 20 ° ~ 35 ° the large inclination working surface scope of falling the frame, topple over support 6 beginnings along upwards first of work plane tendency, topple over support 6 at each and squeeze into the anchor pole 3 that is no less than 5 along past seat earth 1 interior the concentrating of work plane tendency rib side upwards, anchor pole 3 is Bolt with Full Screw Threads and Equal Strength, its length is not less than 2.2m, diameter is not less than 18mm, make the anchor pole of beating 3 form Bolt Groups, Bolt Groups is 2 ~ 4m to the distance of toppling over support of opposite position.And then at beating Bolt Groups exposed junction 2 positions installation hydraulic jack 4, the pulling force of hydraulic jack 4 is that 500kN, piston stroke are 2.0m.Cylinder body one end of hydraulic jack 4 is fixed on the Bolt Groups exposed junction 2, and piston rod one end is connected with the support 6 of toppling over of opposite position by anchor chain 5.From first toppled over support 6, the pulling force by hydraulic jack 4 was pulled upwardly toppling over support 6 back timbers by force, in the process of pull-up, the side guard board that to topple on the support 6 is opened, utilize side guard board thrust to raise and topple over support 6, until topple over after support 6 moves the position to, regain side guard board.What change successively the permanent position of hydraulic jack 4 and connect the relevant position topples over support 6, goes round and begins again, one by one each is toppled over support 6 and carries out righting, until righting all topple over support 6, take off hydraulic jack 4.
Claims (1)
1. the large inclination working surface steady of falling frame method is characterized in that:
A. in the scope of falling the frame, topple over support (6) beginning along upwards first of work plane tendency, topple over support (6) at each and squeeze into the anchor pole (3) that is no less than 5 along concentrating in the past seat earth (1) of work plane tendency rib side upwards, form Bolt Groups;
B. in exposed junction (2) position of Bolt Groups hydraulic jack (4) is installed, cylinder body one end of hydraulic jack (4) is fixed on the exposed junction (2) of Bolt Groups, and piston rod one end is connected with the support (6) of toppling over of opposite position by anchor chain (5);
C. from first topples over support (6), pulling force by hydraulic jack (4) is pulled upwardly toppling over support (6) back timber by force, in the process of pull-up, the side guard board that to topple on the support (6) is opened, utilize side guard board thrust to raise and topple over support (6), until topple over after support (6) moves the position to, regain side guard board;
D. repeating step b, c topple over support (6) to each one by one by hydraulic jack (4) and carry out righting, until righting all topple over support (6), take off hydraulic jack (4).
2, the large inclination working surface steady of falling frame method as claimed in claim 1 is characterized in that: described anchor pole (3) is not less than the Bolt with Full Screw Threads and Equal Strength that 2.2m, diameter are not less than 18mm for length.
3, the large inclination working surface steady of falling frame method as claimed in claim 1 is characterized in that: the pulling force of described hydraulic jack (4) is that 500kN, piston stroke are 2.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101508830A CN102213102B (en) | 2011-06-07 | 2011-06-07 | Method for righting toppled brackets of large-inclined-angle working surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101508830A CN102213102B (en) | 2011-06-07 | 2011-06-07 | Method for righting toppled brackets of large-inclined-angle working surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102213102A CN102213102A (en) | 2011-10-12 |
| CN102213102B true CN102213102B (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101508830A Expired - Fee Related CN102213102B (en) | 2011-06-07 | 2011-06-07 | Method for righting toppled brackets of large-inclined-angle working surface |
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| Country | Link |
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| CN (1) | CN102213102B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536314B (en) * | 2011-12-20 | 2014-01-15 | 中国矿业大学 | Method for quickly lifting bottom on soft bottom combined mining working surface with large inclination angle |
| CN110529115B (en) * | 2019-09-12 | 2021-07-13 | 晋能控股煤业集团有限公司 | Coal mining method for coping with roof crushing and support inclination |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073501A (en) * | 1991-12-19 | 1993-06-23 | 新汶矿务局 | Hydraulic expansion type anchor stock is prevented the roof fall of coal face wall caving |
| CN201187308Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院武汉岩土力学研究所 | Gob-side entry driving support for large-inclination thick coal seam with small coal pillars |
| CN201401183Y (en) * | 2009-04-29 | 2010-02-10 | 宝钢集团新疆八一钢铁有限公司 | Face-end support antiskid device of large inclined angle fully-mechanized caving face |
-
2011
- 2011-06-07 CN CN2011101508830A patent/CN102213102B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1073501A (en) * | 1991-12-19 | 1993-06-23 | 新汶矿务局 | Hydraulic expansion type anchor stock is prevented the roof fall of coal face wall caving |
| CN201187308Y (en) * | 2008-05-06 | 2009-01-28 | 中国科学院武汉岩土力学研究所 | Gob-side entry driving support for large-inclination thick coal seam with small coal pillars |
| CN201401183Y (en) * | 2009-04-29 | 2010-02-10 | 宝钢集团新疆八一钢铁有限公司 | Face-end support antiskid device of large inclined angle fully-mechanized caving face |
Non-Patent Citations (2)
| Title |
|---|
| 大倾角综采工作面液压支架的防倒、防滑探究;胡学群,1;《科技信息(学术研究)》;20081205(第34期);285-286 * |
| 大倾角综采工作面的防倒滑技术浅析;冯宇峰等,1;《矿山机械》;20101231(第19期);17-20 * |
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| CN102213102A (en) | 2011-10-12 |
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