CN103470286A - Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh - Google Patents
Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh Download PDFInfo
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- CN103470286A CN103470286A CN2013104390952A CN201310439095A CN103470286A CN 103470286 A CN103470286 A CN 103470286A CN 2013104390952 A CN2013104390952 A CN 2013104390952A CN 201310439095 A CN201310439095 A CN 201310439095A CN 103470286 A CN103470286 A CN 103470286A
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- gangue
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- entry retaining
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Abstract
The invention relates to a support method of a non-coal pillar mining roadway retaining of a sharp inclined coal seam stoping roadway, in particular to a gob-side entry retaining method realizing support by intercepting self-slip gangue through a strip reinforcing steel bar mesh. The technical method comprises the steps of a. removing an end bracket behind a working surface; b. supplementing two rows of anchor rods which are respectively vertical to a top plate and a bottom plate and are arranged at the positions close to the side of a gob; c. arranging a dense pillar support which is vertical to the top plate and the bottom plate and is arranged at the position close to the side of the gob; d. hanging the strip reinforcing steel bar mesh between the anchor rods which are respectively supplemented on the top plate and the bottom plate to intercept the sliding gangue of the gob, enabling the gangue to naturally slide down to fully fill the lower part of the gob, and supporting the top plate by the gangue to form gob-side entry retaining. The method uses the gangue which naturally slides down as a support beside the reserved roadway, thus being high in supporting intensity, reducing the coal pillar loss, and greatly improving the recovery rate of coal resources; therefore, the roadway is reserved for a working surface of the lower section, and the tunneling cost of the roadway can be reduced, so that the situation of mining take-over tension is relieved, and the method has wide applicability.
Description
Technical field
The present invention relates to the half-edge coal seam stope drift active workings and stay a kind of supporting method of establishing tunnel without coal pillar mining, specifically a kind ofly adopt band steel mesh reinforcement interception from slipping the gob-side entry retaining method of spoil supporting.
Background technology
According to the practical experience in colliery and current technical level, carry out at present without coal pillar mining protect lane be divided into gob side entry retaining, gob side entry driving, across adopting and adopt in advance non chain pillar entryprotection and form four kinds, tunnel form in goaf, wherein this non chain pillar entryprotection mode of gob side entry retaining has many advantages technically and economically.Thereby the mine applicable for condition all should preferentially adopt, and enlarge as far as possible the range of application of gob side entry retaining.The basic mode of gob side entry retaining is by after the upper curtate work plane is adopted, the transporter lane (return airway) of upper work plane is safeguarded with special support material, using the tunnel that remains, as the return airway (transporter lane) of lower curtate work plane, such tunnel can obtain twice utilization.
Because high_dipping face working seam inclination angle is large, it is inapplicable that the top Unloading Technology is cut in explosion, mainly because immediate roof is cut off rear easily undershoot to tunnel, cause security incident and destroy tunnel, strong, the broken swollen coefficient of rock stratum globality after cut-out is very little, still can stay larger space between disrupted bed and old top and make old top produce larger revolution sinking, thereby cause that lane inside ceiling panel deflection increases.
The present invention adopts spoil natural downslide filling bearing technology in goaf to form gob side entry, utilize Rule of roof movement of coal seam with deep dip angle, make the spoil natural downslide of the first inbreak of goaf inclined upper immediate roof that the lower goaf filling is full, utilize spoil to bear roof pressure, manifest thereby alleviate Nei ore deposit, lane pressure.
Summary of the invention
The objective of the invention is for deficiency of the prior art, providing a kind of adopts band steel mesh reinforcement interception from slipping the gob-side entry retaining method of spoil supporting, utilize spoil natural downslide filling bearing technology in goaf to form gob side entry, utilize the half-edge coal seam Rule of roof movement of coal, make the spoil natural downslide of the first inbreak of goaf inclined upper immediate roof that the lower goaf filling is full, utilize spoil to bear roof pressure, take full advantage of material, cost-saving, safe and efficient staying established the high_dipping face stope drift active workings.
The present invention realizes by following technical solution: a removes face end support at the work plane rear; B is arranging anchor pole by vertical top board, base plate difference complement one in goaf side; C is holding perpendicular to top board, base plate the close standing props supporting is being set by goaf side; D is hanging strip band steel mesh reinforcement between the anchor pole of top board, base plate complement, interception goaf downslide spoil, and the spoil natural downslide is full by the lower goaf filling, and supporting roof forms gob side entry retaining.
The invention has the beneficial effects as follows and can learn according to the narration of such scheme, use the natural downslide spoil as staying the roadside support of establishing tunnel, supporting intensity is large.The gob side entry retaining roadside support technique building technology of natural downslide spoil is simple, supporting is safe, the working environment of workers good, appropriate with advance of the face yardstick coupling, be applicable to moderate high inclination-angle and the high-dipping fully-mechanized mining working of fltting speed, realized quick supporting and efficiently pushed to adopt.Adopt from slipping spoil as roadside support, reduced loss of coal pillar, greatly improved the rate of recovery of coal resources, both for staying, the lower curtate work plane established a tunnel, save again the tunnelling expense, alleviated digging and taken over nervous situation, there is application widely.
the accompanying drawing explanation
The structural representation that Fig. 1 is construction tunnel in the present invention.
Fig. 2 is that the present invention stays the lane sectional schematic diagram.
In figure, 1-work plane, 2-face end support, 3-goaf, 4-top board, 5-base plate, 6-anchor pole, 7-close standing props, 8-band steel mesh reinforcement.
the specific embodiment
Below in conjunction with accompanying drawing to one embodiment of the present of invention as further description:
Embodiment, in stope drift active workings as shown in Figure 1, above-mentioned a kind of band steel mesh reinforcement interception comprises step from slipping the gob-side entry retaining method of spoil supporting: a removes face end support 2 at work plane 1 rear; B is arranging anchor poles 6 by vertical top board 4, base plate 5 difference complements one in 3 sides of goaf; C is holding perpendicular to top board 4, base plate 5 close standing props 7 supportings is being set by goaf 3 sides; D is hanging strip band steel mesh reinforcement 8 between the anchor pole 6 of top board 4, base plate 5 complements, interception goaf 3 downslide spoils, and the spoil natural downslide is full by the lower goaf filling, and supporting roof 4 forms gob side entry retainings; Structure as shown in Figure 2.
Claims (1)
1. one kind adopts band steel mesh reinforcement interception from slipping the gob-side entry retaining method of spoil supporting, and it is characterized in that: a removes face end support at the work plane rear; B is arranging anchor pole by vertical top board, base plate difference complement one in goaf side; C is holding perpendicular to top board, base plate the close standing props supporting is being set by goaf side; D is hanging strip band steel mesh reinforcement between the anchor pole of top board, base plate complement, interception goaf downslide spoil, and the spoil natural downslide is full by the lower goaf filling, and supporting roof forms gob side entry retaining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2013104390952A CN103470286A (en) | 2013-09-25 | 2013-09-25 | Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013104390952A CN103470286A (en) | 2013-09-25 | 2013-09-25 | Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
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| CN103470286A true CN103470286A (en) | 2013-12-25 |
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| CN2013104390952A Pending CN103470286A (en) | 2013-09-25 | 2013-09-25 | Gob-side entry retaining method realizing support by intercepting self-slip gangue through strip reinforcing steel bar mesh |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499422A (en) * | 2016-11-22 | 2017-03-15 | 山西晋城无烟煤矿业集团有限责任公司 | Anti- work surface rolls cash method |
| CN107387084A (en) * | 2017-09-15 | 2017-11-24 | 中国矿业大学 | A kind of gob side entry retaining reduces the construction method for cutting top depth |
| CN109763822A (en) * | 2019-01-21 | 2019-05-17 | 西安科技大学 | Face in steep thick coal seam Multi sectional is without coal column placement method between coal column staggered floor Hu Xiang and section |
| CN110273699A (en) * | 2019-07-10 | 2019-09-24 | 重庆大学 | High-dipping resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support |
| CN116753006A (en) * | 2023-08-11 | 2023-09-15 | 山东科技大学 | Multi-stage energy release steep coal pillar safety protection device and protection method |
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| CN102720498A (en) * | 2012-06-20 | 2012-10-10 | 鄂托克前旗长城煤矿有限责任公司 | Gob-side entry retaining mining process for coal face |
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Patent Citations (4)
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| CN101864987A (en) * | 2010-06-13 | 2010-10-20 | 中国矿业大学 | Building method of filled wall body for gob-side entry retaining of large-inclination coal seam |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499422A (en) * | 2016-11-22 | 2017-03-15 | 山西晋城无烟煤矿业集团有限责任公司 | Anti- work surface rolls cash method |
| CN106499422B (en) * | 2016-11-22 | 2018-12-11 | 山西晋城无烟煤矿业集团有限责任公司 | Anti- working face rolls cash method |
| CN107387084A (en) * | 2017-09-15 | 2017-11-24 | 中国矿业大学 | A kind of gob side entry retaining reduces the construction method for cutting top depth |
| CN109763822A (en) * | 2019-01-21 | 2019-05-17 | 西安科技大学 | Face in steep thick coal seam Multi sectional is without coal column placement method between coal column staggered floor Hu Xiang and section |
| CN110273699A (en) * | 2019-07-10 | 2019-09-24 | 重庆大学 | High-dipping resists soft ground coal layer stubbornly and stays coal column gob side entry retaining surrounding rock stability method for protecting support |
| CN116753006A (en) * | 2023-08-11 | 2023-09-15 | 山东科技大学 | Multi-stage energy release steep coal pillar safety protection device and protection method |
| CN116753006B (en) * | 2023-08-11 | 2023-10-17 | 山东科技大学 | Multi-stage energy release steep coal pillar safety protection device and protection method |
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Application publication date: 20131225 |