CN103758567B - A kind of breaking roof Collapsed zone grouting filling method - Google Patents

A kind of breaking roof Collapsed zone grouting filling method Download PDF

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Publication number
CN103758567B
CN103758567B CN201410036236.0A CN201410036236A CN103758567B CN 103758567 B CN103758567 B CN 103758567B CN 201410036236 A CN201410036236 A CN 201410036236A CN 103758567 B CN103758567 B CN 103758567B
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China
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filling
work plane
grouting
supervisor
arm
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CN201410036236.0A
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CN103758567A (en
Inventor
孙熙震
江宁
王昌祥
李金平
王海龙
张士川
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Shandong University of Science and Technology
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Shandong University of Science and Technology
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Abstract

The invention discloses a kind of breaking roof Collapsed zone grouting filling method, its face filling supervisor that first assigns a work in return airway; Then be responsible in the filling of grouting filling roadway layout stowboard, control the valve on stowboard filling supervisor and each wear-resisting sebific duct, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and close respective valves when often root work plane filling arm institute filling slurry amount reaches estimate, carry out the filling operation of next root work plane filling arm, until the filling of all working face filling arm is complete.The mode that placement method of the present invention is combined by grouting and stowboard slip casting, can realize to thin, in the grouting filling of thick and high seam breaking roof Collapsed zone; Adopt grouting and stowboard slip casting substantially not to affect working surface production in placement method of the present invention, adopt that to fill contradiction little, substantially increase filling operation face output.

Description

A kind of breaking roof Collapsed zone grouting filling method
Technical field
The present invention relates to a kind of coal mine filling method, particularly relate to a kind of breaking roof Collapsed zone grouting filling method.
Background technology
At present, the widely used coal mine filling technology of China, mainly contain paste body filling technology, paste-like backfill technology, high*.water packing technology, ultrahigh water filling technique, waste filling technology etc., above filling technique is all carry out filling under top board complete condition, must ensure certain loading time and space while filling.Although above-mentioned filling technique has formed comparatively full-order system and technique, but above-mentioned various filling method is all carry out filling to goaf under the complete prerequisite of goaf top plate, for breaking roof coal seam immediate roof with adopting with emitting, Roof Control difficulty, inapplicable with the goaf filling under breaking roof condition.
Serious for China's " three times " pressure coal, and breaking roof coal seam accounts for the present situation of significant proportion in coal in China reserves, design research and development " breaking roof Collapsed zone grouting filling system " is for realizing goaf filling under breaking roof condition, and liberation " three times " pressure coal is significant.
Coal in China situation started the trend occurring progressively gliding from 2011, bring economic benefit of coal enterprises thus and be deteriorated, weaken the ability to bear of filling cost, if carry out whole fill, then charging quantity is large, filling cost is high.Breaking roof Collapsed zone grouting filling, as a kind of mode of part filling, can reduce charging quantity under the premise that security is guaranteed, controls filling cost, has important impetus for the application within coal mines of expansion filling mining.
CN102444419A pipe-hauling-type filling system for thin seam breaking roof discloses a kind of girdle breaking roof hosted-type filling system, although it achieves girdle goaf filling under breaking roof condition, but still there is segmental defect in its system, such as, the high-order filling steel pipe described in its system only exists under the prerequisite of gob side entry retaining; Filling slurry injects caved gangue space by the filling pipe being arranged in gob floor under pump function, its injecting height is limited, only be only applicable to girdle, large for thick and medium-thickness seam caving zone height, only by being arranged in filling pipe on floor undulation, to carry out its filling effect of pumping to caved gangue space poor.Therefore be necessary to develop a kind of be applicable to thin, in the Collapsed zone grouting filling system of thick and high seam.Therefore be necessary to research and develop a kind of be applicable to thin, in the Collapsed zone grouting filling method of thick and high seam.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the present invention is directed to the particularity-immediate roof in breaking roof coal seam with adopting with emitting, base object model is fracture periodically, caving rock free accumulation in the certain limit of work plane rear, between fractured rock, space is grown, and abscission layer development between space and base object model each rock stratum between base object model and caving rock, design a kind of fractured rock space and absciss layer space, rock stratum of being filled with by slurries to increase the remaining broken swollen coefficient of rock and occupy the Collapsed zone grouting filling method in absciss layer space, timely filling fractured rock space and space between top base object model and caving zone, reduce movement space, control movement and slow down surface subsidence.
Technical solution of the present invention comprises:
A kind of breaking roof Collapsed zone grouting filling method, comprises the following steps:
A, first to assign a work in return airway face filling supervisor, work plane filling supervisor to be led to by reducing two and is connected to high-pressure rubber pipe, the other end of high-pressure rubber pipe is connected to work plane filling pipe, several work plane filling arms are connected side by side along on work plane filling pipe, described work plane filling arm is fixed on hydraulic support, mobile with the movement of hydraulic support, the filling mouth of described work plane filling arm extend into goaf, and arranges along seat earth;
B, to be responsible in the filling of grouting filling roadway layout stowboard, described grouting filling roadway layout is above work plane, and it is axially parallel to advance of the face direction, it is positioned at the central authorities of work plane tendency in tendency, the upper reducing of installing of described stowboard filling supervisor leads to more, the many connectors of all crossing of reducing are connected to wear-resisting sebific duct, wear-resisting sebific duct is connected with sleeve pipe by connector, sleeve pipe by cement paste and inlet well cemented together, at a certain angle in fan-shaped distribution between described inlet well, and stretch into caving zone bottom described inlet well;
C, the valve controlled on work plane filling supervisor and relevant work face filling pipe and work plane filling arm, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and close respective valves when often root work plane filling arm institute filling slurry amount reaches estimate, carry out the filling operation of next root work plane filling arm, until the filling of all working face filling arm is complete;
D, the valve controlled on stowboard filling supervisor and corresponding wear-resisting sebific duct, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and when inlet well inject to close when slurries amounts reaches design flow corresponding inlet well connect valve on wear-resisting sebific duct, and open next inlet well connect valve on wear-resisting sebific duct, grouting filling is proceeded to next inlet well, until all inlet well fillings are complete, terminate this one-phase filling operation;
E, when work plane is pushed ahead, work plane filling pipe and work plane filling arm are together pushed ahead with hydraulic support, and work plane filling arm enters new caving rock region, and be responsible for the filling of the advance of the face timely dismantlement work face, and make it be in the suitable distance in work plane front all the time, remove stowboard filling supervisor in time simultaneously, and manually wear-resisting sebific duct is connected on next estimating position place sleeve pipe, push ahead work plane when distance equals work plane filling arm in hydraulic support rear length when work plane and stop advancing;
F, repetition step c-e, until this working face extraction is complete.
As a preferred version of the present invention, above-mentioned grouting filling roadway layout is in work plane warp damage.
As another preferred version of the present invention, above-mentioned work plane filling arm is all furnished with by-pass valve control, flow meter and pressure gauge.
Described wear-resisting sebific duct is all installed on by-pass valve control, flow meter and pressure gauge.
Described work plane filling supervisor, stowboard filling supervisor are all installed on by-pass valve control, flow meter and pressure gauge.
Described work plane filling supervisor, work plane filling pipe, work plane filling arm and stowboard filling supervisor are wear-resistant steel pipe.
The Advantageous Effects that the present invention brings:
The present invention proposes a kind of breaking roof Collapsed zone grouting filling method, compared with prior art, the mode that this placement method is combined by grouting and stowboard slip casting, can realize to thin, in the grouting filling of thick and high seam breaking roof Collapsed zone;
Adopt grouting and stowboard slip casting substantially not to affect working surface production in placement method of the present invention, adopt that to fill contradiction little, substantially increase filling operation face output;
First placement method of the present invention carries out grouting filling by grouting filling system to Collapsed zone, by top stowboard grouting filling system, space is not filled to top again and carry out secondary grouting filling, pack completeness is high, and it is effective that control movement slows down subsidence;
The slurries with certain cementing properties are injected goaf by placement method of the present invention, make the entirety that erecting dense individual props rock formation is new, improve the load-carrying properties of erecting dense individual props rock, improve the stress of working face wall and coal column.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, explanation clear, complete is further done to the present invention:
Fig. 1 is the plan view of breaking roof Collapsed zone grouting filling system of the present invention;
Fig. 2 is the sectional drawing (along work plane tendency) of breaking roof Collapsed zone grouting filling system of the present invention;
Fig. 3 is the sectional drawing (along work plane trend) of breaking roof Collapsed zone grouting filling system of the present invention;
In figure, the filling of 1-work plane is responsible for, 2-work plane filling pipe, and 3-reducing two leads to, 4-high-pressure rubber pipe, 5-work plane filling arm, 6-grouting filling tunnel, and the filling of 7-stowboard is responsible for, and 8-reducing leads to more, 9-inlet well; A-warp damage; B-fissure zone; C-caving zone.
Detailed description of the invention
The invention discloses a kind of breaking roof Collapsed zone grouting filling method, in order to make advantage of the present invention, technical scheme clearly, clearly, below in conjunction with detailed description of the invention, explanation clear, complete further being done to the present invention.
Warp damage a refers to the part rock stratum of leaking crevice belt top circle to earth's surface;
Fissure zone b refers to and is positioned on caving zone, has the water producing fractures be communicated with goaf, but continuity that a part of rock stratum unspoilt;
Caving zone c refers to and departs from rock stratum parent, loses continuity, in irregular rock or like the part rock stratum of stratiform sillar to erecting dense individual props.
Shown in composition graphs 1 to Fig. 3, the present invention, a kind of breaking roof Collapsed zone grouting filling method, comprises the following steps:
Step 1, first assign a work face filling supervisor 1 in return airway, work plane filling supervisor 1 is arranged in the side of track crossheading (or belt crossheading), be arranged into work plane front certain distance always, and remove gradually with the advance of the face, work plane filling supervisor 1 is connected with one end of high-pressure rubber pipe 4 by reducing two logical 3, the other end of high-pressure rubber pipe 4 is connected to work plane filling pipe 2, high-pressure rubber pipe 4 of the present invention should be able to bear maximum pumping pressure, work plane filling arm 5 is connected with side by side along work plane filling pipe 2, work plane filling arm 5 is fixed on hydraulic support, mobile with the movement of hydraulic support, the filling mouth of work plane filling arm 5 extend into goaf, and arrange along seat earth, the present invention's preferred work plane filling pipe 2, high-pressure rubber pipe 4 are identical with work plane filling arm 5 diameter, and are less than the diameter of work plane filling supervisor 1,
Step 2, stowboard filling supervisor 7 is arranged in grouting filling tunnel 6, (namely center line is along advance of the face direction) is arranged along advance of the face direction in grouting filling lane, its axle center is positioned at the central authorities of work plane tendency, and it is arranged in warp damage a completely, stowboard filling supervisor 7 is arranged in the side in grouting filling tunnel, stowboard filling supervisor is upper installs reducing many logical 8, the many connectors of all crossing of reducing are connected to wear-resisting sebific duct, wear-resisting sebific duct is connected with sleeve pipe by connector, sleeve pipe by cement paste and inlet well 9 cemented together, described inlet well is at a certain angle in fan-shaped distribution, and caving zone c must be stretched into bottom inlet well 9,
Step 3, the valve controlled on work plane filling supervisor 1 and relevant work face filling pipe 2 and work plane filling arm 5, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and close respective valves when often root work plane filling arm 5 filling slurry amounts reach estimate, carry out the filling operation of next root work plane filling arm, until the filling of all working face filling arm 5 is complete;
Step 4, the valve controlled on stowboard filling supervisor 7 and corresponding wear-resisting sebific duct, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and when inlet well inject to close when slurries amounts reaches design flow corresponding inlet well connect valve on wear-resisting sebific duct, and open next inlet well connect valve on wear-resisting sebific duct, grouting filling is proceeded to next inlet well, until all inlet well fillings are complete, terminate the filling operation of this one-phase;
Step 5, when work plane is pushed ahead, work plane filling pipe 2 and work plane filling arm are together pushed ahead with hydraulic support, and work plane filling arm enters new caving rock region, and be responsible for the filling of the advance of the face timely dismantlement work face, and make it be in the suitable distance in work plane front all the time, remove stowboard filling supervisor in time simultaneously, and manually wear-resisting sebific duct is connected on next estimating position place sleeve pipe, push ahead work plane when distance equals work plane filling arm in hydraulic support rear length when work plane and stop advancing;
Step 6, repetition step 3-5, until this working face extraction is complete.
For detecting charging quantity and stowing pressure, flow, pressure sensor can be all installed on every root work plane filling supervisor, stowboard filling supervisor, pass through control system, as the device real-time monitoring such as computer, PLC filling situation, valve can also being set on every root work plane filling supervisor, stowboard filling supervisor simultaneously, when needing the filling stopping somewhere, closing the valve on the filling pipe of relevant position, when needs stop whole filling, then close the valve on filling supervisor.
Above-mentioned wear-resisting sebific duct is all installed on by-pass valve control, flow meter and pressure gauge.
Above-mentioned work plane filling supervisor, work plane filling pipe, work plane filling arm and stowboard filling supervisor are wear-resistant steel pipe.
When carrying out work plane filling, first by grouting filling system, grouting filling is carried out to Collapsed zone, its order be open successively work plane filling supervisor valve and relevant work face filling pipe on valve and work plane filling arm on valve, from the low side of seat earth absolute altitude to the side filling successively that seat earth absolute altitude is high, close respective valves when this place's charging quantity reaches and estimates charging quantity and open other valves corresponding and carry out filling, be responsible for by grouting filling tunnel and the stowboard filling be arranged in grouting filling tunnel again after full face filling is complete, reducing leads to more, sleeve pipe, the acting in conjunction of wear-resisting sebific duct and inlet well, region is not filled to top and carries out secondary filling, after this process completes, this stage filling operation terminates, advancing working face hydraulic support, hydraulic support drags work plane filling pipe and work plane filling arm is pushed ahead together, carries out next stage filling operation after precalculated position to be advanced to.

Claims (6)

1. a breaking roof Collapsed zone grouting filling method, is characterized in that: comprise the following steps:
A, first to assign a work in return airway face filling supervisor, work plane filling supervisor to be led to by reducing two and is connected to high-pressure rubber pipe, the other end of high-pressure rubber pipe is connected to work plane filling pipe, several work plane filling arms are connected side by side along work plane filling pipe, described work plane filling arm is fixed on hydraulic support, mobile with the movement of hydraulic support, the filling mouth of described work plane filling arm extend into goaf, and arranges along seat earth;
B, to be responsible in the filling of grouting filling roadway layout stowboard, described grouting filling roadway layout is above work plane, and it is axially parallel to advance of the face direction, its axle center is positioned at the central authorities of work plane tendency, the upper reducing of installing of described stowboard filling supervisor leads to more, the many connectors of all crossing of reducing are connected to wear-resisting sebific duct, wear-resisting sebific duct is connected with sleeve pipe by connector, sleeve pipe by cement paste and inlet well cemented together, described inlet well at a certain angle in fan-shaped distribution, and stretches into caving zone bottom described inlet well;
C, the valve controlled on work plane filling supervisor and relevant work face filling pipe and work plane filling arm, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and close respective valves when often root work plane filling arm institute filling slurry amount reaches estimate, carry out the filling operation of next root work plane filling arm, until the filling of all working face filling arm is complete;
D, the valve controlled on stowboard filling supervisor and corresponding wear-resisting sebific duct, filling is carried out successively to the side that seat earth absolute altitude is high in the side low from seat earth absolute altitude, and when inlet well inject to close when slurries amounts reaches design flow corresponding inlet well connect valve on wear-resisting sebific duct, and open next inlet well connect valve on wear-resisting sebific duct, grouting filling is proceeded to next inlet well, until all inlet well fillings are complete, terminate this one-phase filling operation;
E, when work plane is pushed ahead, work plane filling pipe and work plane filling arm are together pushed ahead with hydraulic support, and work plane filling arm enters new caving rock region, and be responsible for the filling of the advance of the face timely dismantlement work face, and make it be in the suitable distance in work plane front all the time, remove stowboard filling supervisor in time simultaneously, manually wear-resisting sebific duct is connected on next estimating position place sleeve pipe, pushes ahead work plane when distance equals work plane filling arm in hydraulic support rear length when work plane and stop advancing;
F, repetition step c-e, until this working face extraction is complete.
2. a kind of breaking roof Collapsed zone grouting filling method according to claim 1, is characterized in that: described grouting filling roadway layout is in work plane warp damage.
3. a kind of breaking roof Collapsed zone grouting filling method according to claim 1, is characterized in that: described work plane filling arm is all furnished with by-pass valve control, flow meter and pressure gauge.
4. a kind of breaking roof Collapsed zone grouting filling method according to Claims 2 or 3, is characterized in that: described wear-resisting sebific duct is all installed on by-pass valve control, flow meter and pressure gauge.
5. a kind of breaking roof Collapsed zone grouting filling method according to claim 4, is characterized in that: described work plane filling supervisor, stowboard filling supervisor are all installed on by-pass valve control, flow meter and pressure gauge.
6. a kind of breaking roof Collapsed zone grouting filling method according to claim 5, is characterized in that: described work plane filling supervisor, work plane filling pipe, work plane filling arm and stowboard filling supervisor are wear-resistant steel pipe.
CN201410036236.0A 2014-01-26 2014-01-26 A kind of breaking roof Collapsed zone grouting filling method Expired - Fee Related CN103758567B (en)

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CN103953390B (en) * 2014-05-08 2016-02-10 中国矿业大学 The water-retaining production Tight filling method of control overlying mining rock crack and subsidence
CN105114114A (en) * 2015-07-23 2015-12-02 神华集团有限责任公司 Fire control extinguishing grouting system and method
CN108468564B (en) * 2018-03-12 2020-07-17 中国矿业大学 Near-horizontal coal seam roadway type cemented filling method
CN108625862A (en) * 2018-04-11 2018-10-09 贵州开磷建设集团有限公司 A kind of sinking and drifting method on loose crushing rock mass
CN109183831B (en) * 2018-08-30 2019-08-09 广东省建筑设计研究院 Become the multistage load stake of stake diameter string hole and its construction method
CN111335943B (en) * 2020-03-11 2021-06-15 西安科技大学 Point source type interval grouting loss reduction method by utilizing top plate collapse, crushing and swelling filling and directional drilling
CN111677531A (en) * 2020-06-12 2020-09-18 太原理工大学 Pre-mining treatment method for caving area of thick coal seam old mining residual coal re-mining working face

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CN102155260A (en) * 2011-05-23 2011-08-17 中国矿业大学 Method for filling heavy-pitch coal bed goaf
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CN103306720A (en) * 2013-05-20 2013-09-18 中国矿业大学 Inclined separated layer solid filling coal mining method for super thick coal seam

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
GB1385089A (en) * 1972-06-27 1975-02-26 Coal Industry Patents Ltd Packing debris in mines
CN102155260A (en) * 2011-05-23 2011-08-17 中国矿业大学 Method for filling heavy-pitch coal bed goaf
CN102996131A (en) * 2012-12-10 2013-03-27 中国矿业大学 Solid-filling coal mining method with two pre-excavating tunnels for advancing
CN103306720A (en) * 2013-05-20 2013-09-18 中国矿业大学 Inclined separated layer solid filling coal mining method for super thick coal seam

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