CN102587933A - Gob-side entry retaining method using prefabricated walls - Google Patents
Gob-side entry retaining method using prefabricated walls Download PDFInfo
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- CN102587933A CN102587933A CN2012100818514A CN201210081851A CN102587933A CN 102587933 A CN102587933 A CN 102587933A CN 2012100818514 A CN2012100818514 A CN 2012100818514A CN 201210081851 A CN201210081851 A CN 201210081851A CN 102587933 A CN102587933 A CN 102587933A
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Abstract
The invention relates to a support method for anthracitic column mining roadside gob-side entry retaining, in particular to a gob-side entry retaining method using prefabricated walls. The technical method includes the steps: a, fixing a prefabricated wall template on one side of a roadway; b, filling concrete into the template preliminarily fixed on one side of the roadway in advance, and forming a concrete wall module with high force bearing capacity after solidification; c, dragging the prefabricated wall module to a roadside support position close to a gob in the roadway; d, adjusting the wall module to form support walls; and e, casting a gap between the adjacent walls with sealing materials to form walls with good integral tightness, and casting a sealing layer above the concrete walls to fill a connecting gap between a roadway top and each wall. One-step construction area is large, the formed concrete walls are fine in integrity, high in strength and excellent in sealing effect, and the method has outstanding superiority in both economic and social benefits.
Description
Technical field
The present invention relates to not have a kind of supporting method of the other gob side entry retaining in coal pillar mining lane, specifically is a kind of gob-side entry retaining method that adopts precast wall body.
Background technology
Coal-face needs two tunnels at least for guaranteeing safety in production, and one is the air intake lane, and one is return airway.The mode of taking reserved coal pillar between the common adjacent work plane is isolated the goaf pernicious gas to guarantee the roadway support effect.Stay the safety pillar of establishing in order to reclaim in traditional mining mode, adopt crossheading that certain technological means will go up a section again supporting leave next section for and use, this lane method of staying that former crossheading is kept along the edge, goaf just is called gob side entry retaining.The basic mode of gob side entry retaining is after the upper curtate working face extraction; The transporter lane or the return airway of work plane are safeguarded with special support material; Make transporter lane or the return airway of this tunnel that remains as the lower curtate work plane, such tunnel can obtain twice utilization.Gob side entry retaining is the reasonable development coal resources, improves coal recovery rate, improves roadway maintenance, reduces the tunnelling amount, helps mine safety production and improves an advanced person's of mine technology economic benefit underground mining technology.
Roadside support mode that gob side entry retaining is traditional such as close standing props, grillage all are difficult to fully isolated goaf, and rigid material is built a wall and is difficult to effectively connect the top, and grillage and close standing props leak out seriously; Must be used the spoil bag; And spoil bag intensity is low, and contractibility is big, and the problem of leaking out is difficult to fine solution.Though work stone is built a wall, precast concrete block is built a wall and the cast-in-place concrete wall sealing is better, solidification cycle is long, and initial stage body of wall support capacity is low, can not play good supporting effect; Simultaneously, wall construction and working surface production time that influences each other is long, and programming is slow, has a strong impact on the fltting speed of work plane.
Therefore it is strong to study a kind of body of wall initial stage bearing capacity, and the wall construction and the advance of the face influence each other few, stay speed fast, effective edge air gallery technology in lane imperative.
Summary of the invention
The objective of the invention is provides a kind of gob-side entry retaining method that adopts precast wall body to deficiency of the prior art, improves body of wall initial stage bearing capacity, strengthens the sealing of body of wall and top board, and it is little that the wall construction and the advance of the face are influenced each other, and stays lane speed fast.
This programme is realized through following technical measures: a kind of gob-side entry retaining method that adopts precast wall body, and said technical method comprises step: a fixes the template of precast wall body in a side in tunnel; B is injected into predetermined fixed in the template of tunnel one side in advance with concrete, solidifies the back and forms the concrete wall chunk with strong bearing capacity; C near the goaf, drags prefabricated concrete wall chunk to the roadside support position in the tunnel; D adjustment body of wall chunk forms the supporting body of wall; E forms overall tightness body of wall preferably with the slit between the encapsulant cast neighboring walls, and at cast one deck sealant above concrete wall, the slit that is connected with body of wall is pushed up in the filling tunnel.
In order to make the precast wall body chunk can be overlapped to form complete body of wall each other, said precast wall body structure adopts zigzag.
Adopt high performance flowing concrete among the said step b; The sealant of body of wall top can adopt the soft-medium filler to connect the top among the step e; Sealant forms the back and with encapsulant the slit is handled, and the soft-medium filler can adopt and in the slit, build rate of set concrete faster.
The beneficial effect of this programme can learn according to the narration to such scheme, uses the precast wall body roadside support, and body of wall initial stage setting load is bigger, and have suitably can the amount of contracting characteristic, and have the supporting rigidity after the cast-in-place notes concrete setting.Precast wall body roadside support technique building technology is simple, lacks with the working surface production time that influences each other, and face propulsion speed is fast.Adopt the precast wall body roadside support, realized cutting the top unloading, the roadway deformation amount is little, and drift section satisfies the production needs in the period of service, and maintenance is little.Construction area of precast wall body roadside support is big, and the concrete wall good integrity of formation, intensity are high, sealing effectiveness is good, on economic benefit and social benefit, all have outstanding superiority.This shows that invention compared with prior art has substantive distinguishing features and progress, the beneficial effect of its enforcement also is conspicuous.
Description of drawings
Fig. 1 is the structural representation of construction tunnel among the present invention.
Fig. 2 is the structural representation of precast wall body back-up block among the present invention.
The body of wall sketch map that Fig. 3 forms for the present invention.
Wherein, 1-stope, 2-mobile substation, 3-hydraulic support, 4-body of wall chunk, 5-supporting frame, 6-goaf, 7-anchor pole, 8-top board, 9-sealant, 10-base plate.
The specific embodiment
For clearly demonstrating the technical characterstic of this programme, below through a specific embodiment, and combine its accompanying drawing, this programme is set forth.
Embodiment, in tunnel structure as shown in Figure 1, above-mentioned a kind of gob-side entry retaining method of precast wall body that adopts comprises step: the side that a is provided with mobile substation 2 at heading stope 1 fixes the template of precast wall body; B is injected into predetermined fixed in the template of tunnel one side in advance with high performance flowing concrete, solidifies the back and forms the concrete wall chunk 4 with strong bearing capacity; C is goaf 6 in the tunnel, earlier with hydraulic support 3 supportings, prefabricated concrete wall chunk 4 is dragged to the roadside support chord position put then during mining; D adjustment body of wall chunk 4 forms the supporting body of wall; E is with the slit between the encapsulant cast neighboring walls; Form overall tightness body of wall preferably; And at cast one deck sealant 9 above concrete wall; Fill the slit that is connected between back 8, base plate 10 and the body of wall, sealant 9 and former tunnel support anchor rod 7 in advance interconnect and are integral, and improve intensity.Said precast wall body chunk 4 structures adopt zigzag.Precast wall body chunk 4 structures are as shown in Figure 2, the length of body of wall, thickness, and body of wall butt joint length, body of wall butt joint width and body of wall height etc., size is all confirmed according to the big or small actual conditions of work plane, is principle to satisfy the roadside support needs.The sealant 9 of body of wall top can adopt the soft-medium filler to connect the top among the step e, and sealant forms the back and with encapsulant the slit handled, and improves isolation effect, and structure is as shown in Figure 3.
Claims (3)
1. gob-side entry retaining method that adopts precast wall body, it is characterized in that: said technical method comprises step: a fixes the template of precast wall body in a side in tunnel; B is injected into predetermined fixed in the template of tunnel one side in advance with concrete, solidifies the back and forms the concrete wall chunk with strong bearing capacity; C near the goaf, drags prefabricated concrete wall chunk to the roadside support position in the tunnel; D adjustment body of wall chunk forms the supporting body of wall; E forms overall tightness body of wall preferably with the slit between the encapsulant cast neighboring walls, and at cast one deck sealant above concrete wall, the slit that is connected with body of wall is pushed up in the filling tunnel.
2. the gob-side entry retaining method of employing precast wall body according to claim 1 is characterized in that: said precast wall body structure is a zigzag, can be overlapped to form complete body of wall each other.
3. the gob-side entry retaining method of employing precast wall body according to claim 2; It is characterized in that: adopt high performance flowing concrete among the said step b; The sealant of body of wall top can adopt the soft-medium filler to fill and connect the top among the step e, and sealant forms the back and with encapsulant the slit handled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100818514A CN102587933A (en) | 2012-03-26 | 2012-03-26 | Gob-side entry retaining method using prefabricated walls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100818514A CN102587933A (en) | 2012-03-26 | 2012-03-26 | Gob-side entry retaining method using prefabricated walls |
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| CN102587933A true CN102587933A (en) | 2012-07-18 |
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| CN2012100818514A Pending CN102587933A (en) | 2012-03-26 | 2012-03-26 | Gob-side entry retaining method using prefabricated walls |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089693A (en) * | 2015-09-09 | 2015-11-25 | 中国矿业大学 | Goaf-side-roadway-retaining wall roof-contact improving method |
| CN105971644A (en) * | 2016-05-11 | 2016-09-28 | 四川芙蓉集团实业有限责任公司 | Quick metal anchor wall construction method for controlling air leakage of total mine return airway in karst area |
| CN106703879A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Monitoring method for support effect of new concrete prefabricated block self-locking solid wall |
| CN106703882A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Mine pressure observation method for novel concrete precast block self-locking solid wall gob-side entry retained roadway |
| CN106703878A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Novel concrete precast block self-locking solid wall |
| CN108590710A (en) * | 2018-06-25 | 2018-09-28 | 中南大学 | Prefabricated tunnel and construction method in a kind of underground goaf to be filled |
| CN111911196A (en) * | 2020-08-10 | 2020-11-10 | 山西煤炭运销集团晋城有限公司 | Non-pillar mining concrete modular roadway support structure along empty space |
| CN111980747A (en) * | 2020-09-04 | 2020-11-24 | 山西天地煤机装备有限公司 | Gob-side entry retaining roadside filling support method |
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| US4145918A (en) * | 1976-09-07 | 1979-03-27 | Akzona Incorporated | Freeze-thaw indicator |
| DE3446043C1 (en) * | 1984-12-18 | 1986-06-19 | NLW Fördertechnik GmbH, 4232 Xanten | Face-boundary support |
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| CN102146797A (en) * | 2011-01-21 | 2011-08-10 | 中国矿业大学 | Short-section temporary gob-side entry retaining method |
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| US4145918A (en) * | 1976-09-07 | 1979-03-27 | Akzona Incorporated | Freeze-thaw indicator |
| DE3446043C1 (en) * | 1984-12-18 | 1986-06-19 | NLW Fördertechnik GmbH, 4232 Xanten | Face-boundary support |
| CN101289939A (en) * | 2008-06-10 | 2008-10-22 | 沈阳天安矿山机械科技有限公司 | Comprehensive support device for gob-side entry retaining |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089693B (en) * | 2015-09-09 | 2017-07-04 | 中国矿业大学 | One kind improves gob side entry retaining wall and connects top method |
| CN105089693A (en) * | 2015-09-09 | 2015-11-25 | 中国矿业大学 | Goaf-side-roadway-retaining wall roof-contact improving method |
| CN106703879B (en) * | 2015-11-13 | 2019-05-21 | 山东科技大学 | A kind of monitoring method of the prefabricated block self locking solid wall supporting effect of pair of new concrete |
| CN106703882B (en) * | 2015-11-13 | 2019-05-21 | 山东科技大学 | A kind of pressure observation method of the prefabricated block self locking solid wall gob side entry retaining of pair of new concrete |
| CN106703878A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Novel concrete precast block self-locking solid wall |
| CN106703879A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Monitoring method for support effect of new concrete prefabricated block self-locking solid wall |
| CN106703882A (en) * | 2015-11-13 | 2017-05-24 | 山东科技大学 | Mine pressure observation method for novel concrete precast block self-locking solid wall gob-side entry retained roadway |
| CN106703878B (en) * | 2015-11-13 | 2019-05-21 | 山东科技大学 | A kind of block method of the prefabricated block self locking solid wall of new concrete |
| CN105971644B (en) * | 2016-05-11 | 2017-12-12 | 四川芙蓉集团实业有限责任公司 | Administer the quick metal anchors wall construction method that karst region mine total return air lane is leaked out |
| CN105971644A (en) * | 2016-05-11 | 2016-09-28 | 四川芙蓉集团实业有限责任公司 | Quick metal anchor wall construction method for controlling air leakage of total mine return airway in karst area |
| CN108590710A (en) * | 2018-06-25 | 2018-09-28 | 中南大学 | Prefabricated tunnel and construction method in a kind of underground goaf to be filled |
| CN108590710B (en) * | 2018-06-25 | 2023-12-15 | 中南大学 | Underground goaf inner prefabricated roadway to be filled and construction method |
| CN111911196A (en) * | 2020-08-10 | 2020-11-10 | 山西煤炭运销集团晋城有限公司 | Non-pillar mining concrete modular roadway support structure along empty space |
| CN111911196B (en) * | 2020-08-10 | 2022-03-15 | 山西煤炭运销集团晋城有限公司 | Non-pillar mining concrete modular roadway support structure along empty space |
| CN111980747A (en) * | 2020-09-04 | 2020-11-24 | 山西天地煤机装备有限公司 | Gob-side entry retaining roadside filling support method |
| CN111980747B (en) * | 2020-09-04 | 2022-04-12 | 山西天地煤机装备有限公司 | Gob-side entry retaining roadside filling support method |
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Application publication date: 20120718 |