CN103527196B - Method for recovery of room-type coal pillar through loess filling - Google Patents
Method for recovery of room-type coal pillar through loess filling Download PDFInfo
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- CN103527196B CN103527196B CN201310516020.XA CN201310516020A CN103527196B CN 103527196 B CN103527196 B CN 103527196B CN 201310516020 A CN201310516020 A CN 201310516020A CN 103527196 B CN103527196 B CN 103527196B
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Abstract
The invention discloses a method for recovery of a room-type coal pillar through loess filling. Along the vertical section laneway direction, formed channels in mined coal rooms are taken as an arrangement form of coal transport lanes and material transport lanes; two adjacent coal pillars are arranged to be a stope face, a row of coal pillars are retained between adjacent stope faces as a partition wall; The recovery of coal pillars employs a blasting technology, loess of ground is taken as a filling material of mined-out area, the backfill of the mined-out area is carried out through a way of cooperation operation of high-speed power throwing machines and bulldozers, A room-type remaining coal pillar is replaced by a compact loess filling body for supporting the mined-out area roof. The method recovers precious coal resource, lowers great resource waste caused by room-type mining, and provides a new technical approach for mines with similar conditions in our country.
Description
Technical field
The present invention relates to a kind of method reclaiming room formula coal column, especially a kind of coal mining that is applicable to leaves over coal pillar width reclaims room formula coal column method at the loess-filling of 8 ~ 12m.
Background technology
A lot of mining area such as coal basin, China Erdos and Shenfu coalfield is using room mining for a long time always, and the disadvantage of the method is room of only mining, post of not mining.According to incompletely statistics, in the recoverable reserves of only Erdos area 11,000,000,000 t, resource recovery only accounts for 36 ~ 40%, and about 66 ~ 7,000,000,000 tons of coal resources are abandoned in down-hole, forms dull coalreserves, causes the significant wastage of national precious resources.On the other hand, along with the high tension coal mining of coal resources, a lot of mine is faced with the crisis of resource exhaustion, and therefore, coal column is left in recovery room mining becomes the task of top priority.In order to improve the utilization rate of coal resources, country has put into effect a series of legal system regulation, forces coal mining enterprise to improve the coal resources rate of extraction.
At present, define the recovery method that coal column is left in some room mining both at home and abroad, but but have that the rate of recovery is not high, the shortcoming of mechanization degree, in addition, after Pillar Recovery, will reducing of the Area of bearing of top board, the factor of stress concentration of coal column can increase, coal column unstability may be caused like this, roof falling over great extent, even can jeopardize the life security of personnel.
Therefore, research one can ensure safe working, can solve again the significant technology issues that production technique that room mining leaves over the recovery problem of coal column has become coal mining.
Summary of the invention
The object of the invention is the weak point for prior art, provide a kind of loess-filling simple to operate, that resource recovery is high to reclaim room formula and leave over coal column coal-mining method.
For achieving the above object, loess-filling of the present invention reclaims room formula and leaves over coal column coal-mining method, comprises the steps:
A. along the direction perpendicular to section road, often will arrange a stope by adjacent two row coal columns, retain a row coal column between adjacent stope as divider wall;
B. along perpendicular to the direction of section road, using the first row on the left of divider wall coal mining room as fortune coal road, secondary series coal mining room as haul lane;
C. in fortune coal road, arrange bulldozer, loader and railless free-wheeled vehicle, in haul lane, arrange ribbon conveyer (4), high speed motive force throwing machine simultaneously;
D. the 1# coal column in the stope adopting the mode of drilling and blasting to arrange two row coal columns carries out explosion, the raw coal utilizing loader explosion to be fallen is loaded on railless free-wheeled vehicle, then by railless free-wheeled vehicle, raw coal is transported to ground, treats that 1# Pillar Recovery is complete, cleaning float coal;
E. jettisoning loess in the goaf utilizing high speed motive force throwing machine to be formed after 1# pillar extraction, then adopt bulldozer that the loess of jettisoninging is pushed away reality, high speed motive force throwing machine has coordinated jettisoninging of loess and pushed away implementation industry with bulldozer;
F. repeat steps d, e and complete the residue recovery of coal column and the filling in goaf in 2# coal column, 3# coal column, 4# coal column and this stope successively;
G. when the advance of the face stops back production to during section road place, and fire dam is set;
H. repetition step b, c, d, e, f, g complete room formula in all the other stopes and leave over the recovery of coal column.
Beneficial effect: the present invention is particularly useful for leaving over the room formula coal column that coal pillar width is 40 ~ 60m at 8 ~ 12m, face length, after coal pillar recovery, filling is carried out to goaf, under the premise that security is guaranteed, valuable coal resources are not only reclaimed, and extend the length of service of mine, solve room formula and to mine the problem of the resource significant wastage brought.In addition, after leaving over Pillar Recovery, the loess be filled with in goaf can support overlying rock effectively, thus reaches and weaken the impact of Pillar Recovery on surface water and building thereof.A kind of new solution route has been started in the recovery leaving over coal column for room mining under China's conditions of similarity, and scientific and engineering is significant.Its method is simple, and resource recovery is high, has practicality widely.
Accompanying drawing explanation
Fig. 1 is coal-face division figure of the present invention;
Fig. 2 is work plane plane of arrangement figure of the present invention;
Fig. 3 is first Pillar Recovery of the first work plane of the present invention and the plan view after the filling of territory, goaf;
Fig. 4 is the plan view after the first work plane of the present invention completes all Pillar Recovery and goaf filling;
Fig. 5 is the present invention's second working face mining state plane figure;
Fig. 6 is the plan view after the present invention's second work plane completes all Pillar Recovery and goaf filling.
In figure: 1-section road, 2-divider wall, 3-high speed motive force throwing machine, 4-ribbon conveyer, 5-bulldozer, 6-loader, 7-railless free-wheeled vehicle, 8-1# coal column, 9-2# coal column, 10-3# coal column, 11-4# coal column, 12-transports coal road, 13-haul lane, 14-fire dam, 15-loess.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
(1) the first mining face in certain ore deposit is positioned at three sides, southwest, panel, along the direction perpendicular to section road 1, two often adjacent row coal columns are arranged a stope, work plane mining height 4.5m, work plane strike length 120m, tilt length is 40m, retains a row coal column as divider wall 2, as shown in Figure 1 between adjacent stope;
(2) along perpendicular to the direction of section road 1, using the first row on the left of divider wall coal mining room as fortune coal road 12, secondary series coal mining room as haul lane 13;
(3) in fortune coal road 12, arrange bulldozer 5, ZL5FB type mining tyres formula explosion-proof loader 6 and railless free-wheeled vehicle 7, in haul lane 13, arrange ribbon conveyer 4, high speed motive force throwing machine 3, as shown in Figure 2;
(4) the 1# coal column 8 in the stope adopting the mode of drilling and blasting to arrange two row coal columns carries out explosion, utilize coal loading that explosion falls by ZL5FB type mining tyres formula explosion-proof loader 6 on railless free-wheeled vehicle 7, then through fortune coal road 12, coal is transported to ground by railless free-wheeled vehicle 7, treat that 1# coal column 8 has reclaimed, float coal in this stope is cleaned out, as shown in Figure 3;
(5) work plane is transported to by ribbon conveyer 4 after the loess 15 on ground is transported to section road 1, high speed motive force throwing machine 3 is utilized to jettisoning to goaf loess 15, after loess 15 is accumulated to certain height, rotate high speed motive force throwing machine 3, the opposite side to goaf is jettisoninged material; Start bulldozer 5 simultaneously, loose loess 15 heap under just jettisoninging is pushed to direction, goaf, makes it connect top, tamp to reach certain density to loess 15 simultaneously; After this side loess 15 is tamped densification and connect top, rotate high speed motive force throwing machine 3, loess 15 of again jettisoninging to this side, bulldozer 5 moves to opposite side to carry out the same compacting required and connects top technique; Under coordinate of high speed motive force throwing machine 3 with bulldozer 5, jettisoning loess and compacting of carrying out so repeatedly connects top technique, after both sides, goaf are all full of by closely knit loess 15 obturation, stop ribbon conveyer 4 and high speed motive force throwing machine 3,1# coal column 8 to reclaim rear goaf filling and complete;
(6) repeat step (4), (5) complete 2# coal column 9 in this stope, 3# coal column 10,4# coal column 11 successively until the residue recovery of coal column and the filling in goaf, complete the Pillar Recovery of first stope, as shown in Figure 4;
(7) stop back production when this stope is advanced into section road 1 place, and fire dam 14 is set;
(8) repeat step (2), (3), (4), (5), (6), (7), carry out the Pillar Recovery in stope one by one, complete the recovery that all the other room formulas leave over coal column, as shown in Figure 5,6.
Claims (1)
1. loess-filling reclaims the coal-mining method that room formula leaves over coal column, it is characterized in that, comprises the following steps:
A. along the direction perpendicular to section road (1), often will arrange a stope, work plane mining height 4.5m, work plane strike length 120m by adjacent two row coal columns, tilt length is 40m, retains a row coal column as divider wall (2) between adjacent stope;
B. along perpendicular to the direction of section road (1), using the first row in divider wall (2) left side coal mining room as fortune coal road (12), secondary series coal mining room as haul lane (13);
C. in fortune coal road (12), arrange bulldozer (5), loader (6) and railless free-wheeled vehicle (7), in haul lane (13), arrange ribbon conveyer (4), high speed motive force throwing machine (3) simultaneously;
D. the 1# coal column (8) in the stope adopting the mode of drilling and blasting to arrange two row coal columns carries out explosion, the raw coal utilizing loader (6) explosion to be fallen is loaded on railless free-wheeled vehicle (7), then by railless free-wheeled vehicle (7), raw coal is transported to ground, treat that 1# coal column (8) has reclaimed, cleaning float coal;
E. work plane is transported to by ribbon conveyer (4) after the loess (15) on ground is transported to section road (1), jettisoning loess (15) in the goaf utilizing high speed motive force throwing machine (3) to be formed after 1# coal column (8) back production, then adopt bulldozer (5) that the loess of jettisoninging (15) is pushed away reality, coordinate jettisoninging and pushing away implementation industry of loess (15) by high speed motive force throwing machine (3) with bulldozer (5); After side, goaf loess (15) is accumulated to certain height, rotate high speed motive force throwing machine (3), the opposite side to goaf is jettisoninged material; Start bulldozer (5) simultaneously, loose loess (15) heap under just jettisoninging is pushed to direction, goaf, makes it connect top, tamp to reach certain density to loess (15) simultaneously; When the compacting of this side loess (15) is fine and close and after connecing top, rotate high speed motive force throwing machine (3), loess (15) of again jettisoninging to this side, bulldozer (5) moves to opposite side to carry out the same compacting required and connects top operation; At high speed motive force throwing machine (3) with under the cooperation of bulldozer (5), jettisoning loess and compacting of carrying out so repeatedly connects top operation, after both sides, goaf are all full of by closely knit loess (15) obturation, stop ribbon conveyer (4) and high speed motive force throwing machine (3), the goaf filling after 1# coal column (8) reclaims completes;
F. repeat steps d, e and complete the residue recovery of coal column and the filling in goaf in 2# coal column (9), 3# coal column (10), 4# coal column (11) and this stope successively;
G. when the advance of the face stops back production to during section road (1) place, and fire dam (14) is set;
H. repeat step b, c, d, e, f, g, carry out the Pillar Recovery in stope one by one, the room formula in all the other stopes that completes leaves over the recovery of coal column.
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| CN104847406B (en) * | 2015-03-25 | 2017-04-12 | 中国矿业大学 | Method for fracturing retained filled wall of adjacent coal face |
| CN105240014B (en) * | 2015-11-12 | 2017-09-15 | 中国矿业大学 | A kind of reconstruction protection pillar band that fills reclaims the method that room formula leaves coal column |
| CN105422099B (en) * | 2015-12-11 | 2018-05-25 | 太原理工大学 | A kind of bilateral method that all coal column is left in the residual exploiting field of filling second mining by column |
| CN106321103B (en) * | 2016-09-08 | 2018-04-13 | 中国矿业大学 | A kind of solid filling collaboration artificial ore pillar recycling room formula coal column method |
| CN107882562B (en) * | 2016-09-29 | 2020-06-05 | 河南理工大学 | Method for realizing recovery of coal pillars arranged on opposite-pulling working face |
| CN108087021A (en) * | 2017-11-01 | 2018-05-29 | 中国矿业大学 | A kind of method that filling coal mining recycling leaves coal column and water-resisting key strata is controlled to stablize |
| CN108915764B (en) * | 2018-07-09 | 2019-04-30 | 中国矿业大学 | A kind of method of reserved tunnel consolidated fill recycling room formula coal column |
| CN109139100B (en) * | 2018-09-04 | 2019-12-20 | 中国矿业大学 | Inner injection substitution type supporting room type coal pillar recovery method |
| CN109113744B (en) * | 2018-09-04 | 2019-11-05 | 中国矿业大学 | A kind of external supporting substituted room formula pillar recovery method |
| CN110030031B (en) * | 2019-02-26 | 2021-07-27 | 天地科技股份有限公司 | Method for long-wall recovery of pillar type goaf remaining coal pillars |
| CN114165280A (en) * | 2021-11-03 | 2022-03-11 | 李龙清 | Column type goaf filling reconstruction coal seam comprehensive mechanical stoping method |
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| SU567825A1 (en) * | 1975-01-15 | 1977-08-05 | Пермский Государственный Проектно-Конструкторский И Экспериментальный Институт Горного Машиностроения "Пермгидрогормаш" | Method of filling-up undergrounf workings |
| CN101725352B (en) * | 2009-12-04 | 2012-03-07 | 中国矿业大学 | Method for filling solid and fully mechanizing and recovering room type coal pillar |
| CN101915100B (en) * | 2010-08-24 | 2013-04-10 | 霍州煤电集团有限责任公司 | Loess-filling coal-mining method in a coal mine |
| CN102011588A (en) * | 2010-11-30 | 2011-04-13 | 淄博市王庄煤矿 | House pillar type cutting and filling method of medium coal seam for controlling movement deformation of overlying rock |
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