CN102296987A - Roadside packing gob-side entry retaining soft medium top filling method - Google Patents
Roadside packing gob-side entry retaining soft medium top filling method Download PDFInfo
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- CN102296987A CN102296987A CN2011102646912A CN201110264691A CN102296987A CN 102296987 A CN102296987 A CN 102296987A CN 2011102646912 A CN2011102646912 A CN 2011102646912A CN 201110264691 A CN201110264691 A CN 201110264691A CN 102296987 A CN102296987 A CN 102296987A
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- entry retaining
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Abstract
The invention discloses a top filling method for roadside packing gob-side entry retaining in non-coal pillar mining, in particular to a roadside packing gob-side entry retaining soft medium top filling method. In the method, by adopting soft medium top filling between a filler and a roof, a filling structure follows a settling rule of the gob-side entry retaining roof, so that the longitudinal shrinkage and the transverse stability of the filling structure are improved, the imbalanced concentrated stress produced on the filler is reduced, and the stability of the filling structure is improved. The top filling method has the beneficial effects that: according to the characteristics of low strength and high shrinkage of the soft medium, the requirements of settling and transverse deformation of the tunnel roof are met through the deformation of the soft medium, the damage to the filler by concentrated stress caused thereby is avoided, the stability of the filler is maintained, the width of the filler can also be reduced on the premise that the strength of the filler meets the requirements of a supported tunnel roof, and the cost of the filling material is reduced.
Description
Technical field
The present invention relates to not have a kind of top method that connects of coal pillar mining roadside packing gob side entry retaining.Specifically be that a kind of roadside packing gob side entry retaining soft-medium connects the top method.
Background technology
The roadside packing gob side entry retaining is a kind of no coal pillar mining gob side entry retaining job practices that generally adopts both at home and abroad at present, adopts cementitious materialss such as high-water material, concrete and lotion to carry out the construction of roadside packing gob side entry retaining.The top method that connects that in existing roadside packing gob side entry retaining construction, generally adopts filler and back directly to contact, this top method that connects is pushed up rotation always because of the tunnel and is sunk to producing stress easily on obturation and concentrate, thereby causes obturation to destroy loss of stability.
Summary of the invention
The invention provides a kind of roadside packing gob side entry retaining soft-medium and connect the top method, purpose is to allow the filling structure follow the gob side entry retaining rule of crushing by adopting soft-medium to connect the top between obturation and top board, improving the filling structure vertically can the amount of contracting and lateral stability, is reduced in the unbalanced concentrated stress that produces on the obturation and improves the filling stability of structure.
The technical solution used in the present invention is as follows: a kind of roadside packing gob side entry retaining soft-medium connects the top method, by between obturation and top board, adopting soft-medium to connect the top, make the filling structure follow the gob side entry retaining rule of crushing, improving the filling structure vertically can the amount of contracting and lateral stability, is reduced in the unbalanced concentrated stress that produces on the obturation and improves the filling stability of structure; Concrete steps are:
1) calculates back slab integral deflection Δ h on earth according to the tunnel coal seam geological condition;
2) adopt cementitious materials to carry out the gob side entry retaining construction, between obturation and back, keep Δ h height space, connect the top in Δ h height space with connecing the top soft-medium then;
3) connecing the sealing of top soft-medium outside employing closed material, prevent to leak out.
Beneficial effect of the present invention: the present invention connects the top method has low-intensity, highly shrinkable according to soft-medium itself characteristics, satisfy the demand of back sinking and lateral deformation by the soft-medium distortion, avoid the concentrated stress that therefore causes destruction to obturation, safeguard the stability of obturation, satisfy the width that can also dwindle obturation under the prerequisite of supporting back requirement at strength of filling mass, reduce the filler expense.
Description of drawings
Fig. 1 is that the gob side entry retaining soft-medium connects the top sectional drawing;
Among the figure: 1. back; 2. roadway floor; 3. Liu Xiang tunnel; 4. obturation; 5. connect the top soft-medium; 6. closed material; 7. the spoil of erecting dense individual props; 8. the entity coal is helped.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1,
1) arrive roadway floor 2 bulk deformation amount design formulas (1) according to back 1, calculate the bulk deformation amount of back 1 to roadway floor 2:
Δh＝(h-h
1)(l
1+a+0.5a
1)/l (1)
In the formula: h
1Touch cash height h after the-old top revolution
1=k (h-m); H is that roadway floor 2 is to the old heights of roofs of work plane; M is the work plane mining height; A is the width in tunnel 3; a
1Be obturation 4 width; K is broken bloated rock compaction coefficient, general value 1.25; l
1-be the leading fracture position of crucial piece; L is the fracture block length.
2. when adopting cementitious materials to carry out the gob side entry retaining construction, between obturation 4 and back 1, stay Δ h height space, adopt compressive strength and filler to solidify one day close material of compressive strength to the Δ h height space that keeps and connect the top as connecing top soft-medium 5, the width of soft-medium 5 is half of obturation 4 width.Present embodiment connects top soft-medium 5 and adopts the soft lumps of wood or rubber.
3. connect the soft-medium outside, top and adopt the cement mortar sealing still less of M7.5 or cement factor, closed material 6 does not have the intensity that supports back 1, mainly be to prevent that the goaf from leaking out, obtain area easily at yellow mud, closed material 6 also can replace with yellow mud or other closed materials.
Claims (5)
1. a roadside packing gob side entry retaining soft-medium connects the top method, it is characterized in that, by between obturation and top board, adopting soft-medium to connect the top, make the filling structure follow the gob side entry retaining rule of crushing, improving the filling structure vertically can the amount of contracting and lateral stability, is reduced in the unbalanced concentrated stress that produces on the obturation and improves the filling stability of structure; Concrete steps are:
1) calculates back slab integral deflection Δ h on earth according to the tunnel coal seam geological condition;
When 2) adopting cementitious materials to carry out the gob side entry retaining construction, between obturation and back, keep Δ h height space, connect the top in Δ h height space with connecing the top soft-medium then;
3) connect top soft-medium outer material side and adopt the closed material sealing, prevent to leak out.
2. roadside packing gob side entry retaining soft-medium according to claim 1 connects the top method, it is characterized in that, the described top soft-medium that connects is that compressive strength is solidified one day identical or close material of compressive strength with filler.
3. roadside packing gob side entry retaining soft-medium according to claim 1 and 2 connects the top method, it is characterized in that, the described top soft-medium that connects is the soft lumps of wood or elastomeric material.
4. roadside packing gob side entry retaining soft-medium according to claim 1 connects the top method, it is characterized in that, the described width that connects the top soft-medium is half of obturation width.
5. roadside packing gob side entry retaining soft-medium according to claim 1 connects the top method, it is characterized in that, described closed material is cement mortar, yellow mud or other closed materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102646912A CN102296987A (en) | 2011-09-02 | 2011-09-02 | Roadside packing gob-side entry retaining soft medium top filling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102646912A CN102296987A (en) | 2011-09-02 | 2011-09-02 | Roadside packing gob-side entry retaining soft medium top filling method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102296987A true CN102296987A (en) | 2011-12-28 |
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ID=45357642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102646912A Pending CN102296987A (en) | 2011-09-02 | 2011-09-02 | Roadside packing gob-side entry retaining soft medium top filling method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852550A (en) * | 2012-04-01 | 2013-01-02 | 中国矿业大学 | Coal-pillar-free semi-normal-position goaf-side entry retaining method |
| CN103485820A (en) * | 2013-10-09 | 2014-01-01 | 山东科技大学 | Filling wall body capable of protecting laneway through soft yielding in non-chain-pillar filling mining and construction method thereof |
| CN105003299A (en) * | 2014-12-16 | 2015-10-28 | 山东科技大学 | Flexible filling bag for gob-side entry retaining and its application method |
| CN105089693A (en) * | 2015-09-09 | 2015-11-25 | 中国矿业大学 | Goaf-side-roadway-retaining wall roof-contact improving method |
| CN105179002A (en) * | 2015-09-08 | 2015-12-23 | 南京梅山冶金发展有限公司 | Construction method for dynamic ventilation channels of underground mining of thick ore body |
| CN105422172A (en) * | 2015-12-25 | 2016-03-23 | 山东科技大学 | Waste rock bag roadside support method for anchoring low coal seam with strong roof |
| CN105735995A (en) * | 2016-02-02 | 2016-07-06 | 山东科技大学 | Gob-side roadway retaining method based on roof cutting of soft roof plate |
| CN110107350A (en) * | 2019-05-28 | 2019-08-09 | 太原理工大学 | A kind of cylinder formula gob side entry retaining roadside packing template and its application method |
| CN110145361A (en) * | 2019-05-28 | 2019-08-20 | 太原理工大学 | A kind of asymmetric cylinder formula gob side entry retaining roadside packing template and its application method |
| CN110159343A (en) * | 2019-05-28 | 2019-08-23 | 太原理工大学 | A kind of stepped cylinder formula gob side entry retaining roadside packing template and its application method |
| CN112231936A (en) * | 2020-11-11 | 2021-01-15 | 中国矿业大学 | Method for determining key parameters of gob-side entry retaining stability under influence of multiple parameters |
| CN112377248A (en) * | 2020-10-23 | 2021-02-19 | 神华神东煤炭集团有限责任公司 | Goaf filling method |
| CN113969802A (en) * | 2021-03-27 | 2022-01-25 | 西安科技大学 | Filling height analysis method for filling body in combined filling mining |
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| SU829988A1 (en) * | 1979-07-17 | 1981-05-15 | Zhukov Vladimir E | Method of holding filling mass |
| CN101725368A (en) * | 2009-11-28 | 2010-06-09 | 山东科技大学 | Thick seam large mining height working face gob-side entry retaining method |
| CN201568082U (en) * | 2009-12-24 | 2010-09-01 | 攀枝花煤业（集团）有限责任公司 | Roof-contacted structure of gob-side entry retaining filling wall |
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| SU829988A1 (en) * | 1979-07-17 | 1981-05-15 | Zhukov Vladimir E | Method of holding filling mass |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852550B (en) * | 2012-04-01 | 2015-03-04 | 中国矿业大学 | Coal-pillar-free semi-normal-position goaf-side entry retaining method |
| CN102852550A (en) * | 2012-04-01 | 2013-01-02 | 中国矿业大学 | Coal-pillar-free semi-normal-position goaf-side entry retaining method |
| CN103485820A (en) * | 2013-10-09 | 2014-01-01 | 山东科技大学 | Filling wall body capable of protecting laneway through soft yielding in non-chain-pillar filling mining and construction method thereof |
| CN103485820B (en) * | 2013-10-09 | 2016-03-30 | 山东科技大学 | Ya Hu lane filled wall and construction method thereof is allowed without coal column filling mining flexibility |
| CN105003299A (en) * | 2014-12-16 | 2015-10-28 | 山东科技大学 | Flexible filling bag for gob-side entry retaining and its application method |
| CN105179002A (en) * | 2015-09-08 | 2015-12-23 | 南京梅山冶金发展有限公司 | Construction method for dynamic ventilation channels of underground mining of thick ore body |
| 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 |
| CN105422172A (en) * | 2015-12-25 | 2016-03-23 | 山东科技大学 | Waste rock bag roadside support method for anchoring low coal seam with strong roof |
| CN105735995B (en) * | 2016-02-02 | 2017-11-14 | 山东科技大学 | A kind of loose roof cuts the gob-side entry retaining method under top |
| CN105735995A (en) * | 2016-02-02 | 2016-07-06 | 山东科技大学 | Gob-side roadway retaining method based on roof cutting of soft roof plate |
| CN110107350A (en) * | 2019-05-28 | 2019-08-09 | 太原理工大学 | A kind of cylinder formula gob side entry retaining roadside packing template and its application method |
| CN110145361A (en) * | 2019-05-28 | 2019-08-20 | 太原理工大学 | A kind of asymmetric cylinder formula gob side entry retaining roadside packing template and its application method |
| CN110159343A (en) * | 2019-05-28 | 2019-08-23 | 太原理工大学 | A kind of stepped cylinder formula gob side entry retaining roadside packing template and its application method |
| CN110159343B (en) * | 2019-05-28 | 2020-11-27 | 太原理工大学 | Step cylinder type gob-side entry retaining roadside filling template and use method thereof |
| CN112377248A (en) * | 2020-10-23 | 2021-02-19 | 神华神东煤炭集团有限责任公司 | Goaf filling method |
| CN112231936A (en) * | 2020-11-11 | 2021-01-15 | 中国矿业大学 | Method for determining key parameters of gob-side entry retaining stability under influence of multiple parameters |
| CN112231936B (en) * | 2020-11-11 | 2023-11-14 | 中国矿业大学 | Method for determining key parameters of gob-side entry retaining stability under influence of multiple parameters |
| CN113969802A (en) * | 2021-03-27 | 2022-01-25 | 西安科技大学 | Filling height analysis method for filling body in combined filling mining |
| CN113969802B (en) * | 2021-03-27 | 2023-09-08 | 西安科技大学 | Filling height analysis method of filling body in combined filling mining |
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Application publication date: 20111228 |