CN109441511A - A kind of advanced support method of gob side entry retaining working face - Google Patents
A kind of advanced support method of gob side entry retaining working face Download PDFInfo
- Publication number
- CN109441511A CN109441511A CN201811076253.1A CN201811076253A CN109441511A CN 109441511 A CN109441511 A CN 109441511A CN 201811076253 A CN201811076253 A CN 201811076253A CN 109441511 A CN109441511 A CN 109441511A
- Authority
- CN
- China
- Prior art keywords
- anchor
- steel band
- anchor cable
- cable
- side entry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0053—Anchoring-bolts in the form of lost drilling rods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Abstract
The present invention relates to a kind of advanced support methods of gob side entry retaining working face, step are as follows: on gob side entry retaining under lane shoulder original support steel strip end anchor pole with inner, one row's anchor rope truss of construction is moved towards along tunnel, it is connected between anchor rope truss and anchor rope truss using W steel band, W steel band two ends eyelet is pressed under anchor rope truss Chong Die with anchor rope truss eyelet, eyelet makes a call to one etc. strong thread steel type resin anchor among W steel band, and resin anchor cooperation W backplate, high-strength anchor disk are pressed on W steel band and carry out supporting；Shoulder original support steel strip end anchor pole moves towards the construction single anchor cable of one row along tunnel with inner on lane on gob side entry retaining；The inclined lower position in tunnel top center moves towards the construction single anchor cable of one row along tunnel, and single anchor cable is set among front two rows steel band.The present invention reduces the investments of support material, so that the deflection in tunnel significantly reduces, supporting intensity increases.
Description
Technical field
The present invention relates to a kind of advanced support methods of gob side entry retaining working face, the coal working face suitable for gob side entry retaining
Two lane advance reinforcements, belong to Safety of Coal Mine Production field.
Background technique
Two lane of coal working face of gob side entry retaining uses bolt net bar supporting, and when working face mining, each use is helped in upper lane above and below
One row's hydraulic prop carries out advance support with metal hinge top beam, and advance support length is not less than 50m, hydraulic prop
Setting load is not less than 90KN, and pillar wears skate.By being found to each stage roadway deformation discharge observation data comparison, using monomer
When pillar matches articulated roof beam strengthening supporting, roadway deformation amount is larger, and the level amount of shifting near reaches 342mm, and the amount of crushing reaches
103mm, bottom plate pucking amount reach 263mm；Former method for protecting support supporting intensity is not high, and support material occupancy is larger, worker's labour
Intensity is big, and production efficiency is lower, Master Cost investment is larger.
Summary of the invention
The purpose of the present invention is to provide a kind of advanced support method of gob side entry retaining working face, the deformations in tunnel of the present invention
Amount significantly reduces, and supporting intensity increases.Technical scheme is as follows:
A kind of advanced support method of gob side entry retaining working face, steps are as follows:
Shoulder original support steel strip end anchor pole moves towards one row's anchor rope truss of construction, anchor cable purlin along tunnel with inner under lane on gob side entry retaining
Frame length 2.2m, anchor cable spacing 1.8m；Between anchor rope truss and anchor rope truss, using length × width x thickness=2200 × 280 ×
The W steel band of 2.75mm connects, and W steel band two ends eyelet is pressed under anchor rope truss, W steel band among eye Chong Die with anchor rope truss eyelet
The strong thread steel type resin anchor such as MSGLD-400/20 × 2400mm (X) is made a call in hole, and resin anchor cooperates W backplate, high-strength anchor
Disk, which is pressed on W steel band, carries out supporting；Shoulder original support steel strip end anchor pole moves towards construction one along tunnel with inner on lane on gob side entry retaining
Arrange single anchor cable, anchor cable spacing 2.7m；The inclined lower position in tunnel top center moves towards the construction single anchor cable of one row along tunnel, single
Root anchor cable is set among front two rows steel band, beam length 1.2m, anchor cable spacing 2.7m.
Further, length × width x thickness=150 × 150 × 10mm of the high-strength anchor disk；The 1 of anchor cable selection Ф 22mm ×
19 structure steel strand wires (steel strand wires of this structure have the characteristics that high-intensitive, underrelaxation), it is preferred that the length of anchor cable is
8.0m；It is furthermore preferred that every anchor cable is anchored using 3 MSK28/500 type resin anchoring agents.
Further, when back is crushed, anchor cable hollow grouting cable anchor in middle part stays lane advance reinforcement distance not
Lower than 80m.
Compared with the prior art, the present invention has the following advantages:
(1) The present invention reduces the investment of support material, traditional advanced support method is helped each using row's monomer above and below for upper lane
Hydraulic prop carries out advance support with metal hinge top beam, and advance support length is not less than 50m, and hydraulic prop setting load is not
Lower than 90KN, pillar wears skate；It is propped up in advance without hydraulic prop with metal hinge top beam using after this method
Shield；
(2) the phenomenon that being not necessarily to overlapping investment, mitigate construction personnel's labor intensity, preventing support material damage, by the effective of tunnel
Width increases to 3.0 meters from 2.0 meters；Security risk during reducing haul and hauling big part；
(3) securely and reliably, the deflection in tunnel significantly reduces, and supporting intensity increases.
Detailed description of the invention
To be illustrated more clearly that background technique or technical solution of the present invention, below to the prior art or specific embodiment
The attached drawing of middle combined use is briefly described；It should be evident that below in conjunction with the attached drawing side of being only for of specific embodiment
Just understand the embodiment of the present invention, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other drawings based on these drawings；
Fig. 1 is gob side entry retaining ahead work face supporting construction schematic diagram of the present invention.
Symbol description:
Shoulder under lane on 1., 2. former support steel strips, 3. end anchor poles, 4. anchor rope truss, 5. anchor cables, 6.W steel band, among 7.W steel band
Eyelet, shoulder on lane on 8..
Specific embodiment
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary, and it is not intended to limit the scope of the present invention in any way.Those skilled in the art answer
It should be appreciated that without departing from the spirit and scope of the invention can details to technical solution of the present invention and form repair
Change or replace, but these modifications and replacement are fallen within the protection scope of the present invention.
A kind of advanced support method of the gob side entry retaining working face of embodiment 1
Steps are as follows:
As shown in Figure 1, the former 2 end anchor pole 3 of support steel strip of shoulder 1 moves towards one row's anchor of construction along tunnel with inner under lane on gob side entry retaining
Cable truss 4,4 length 2.2m of anchor rope truss, 5 spacing 1.8m of anchor cable；Between anchor rope truss 4 and anchor rope truss 4, using length × wide ×
The W steel band 6 of thickness=2200 × 280 × 2.75mm connects, and 6 two ends eyelet of W steel band is pressed under anchor rope truss 4 and anchor rope truss 4
Eyelet overlapping, W steel band centre eyelet 7 break the strong thread steel type resin anchor such as MSGLD-400/20 × 2400mm (X), resin
Anchor pole cooperation W backplate, high-strength anchor disk are pressed on W steel band 6 and carry out supporting；2 end anchor of the former support steel strip of shoulder 8 on lane on gob side entry retaining
Bar 3 moves towards the construction single anchor cable 5 of one row, 5 spacing 2.7m of anchor cable with inner, along tunnel；The inclined lower position in tunnel top center, along lane
Road moves towards the construction single anchor cable 5 of one row, and single anchor cable 5 is set among front two rows steel band, beam length 1.2m, 5 spacing of anchor cable
2.7m。
A kind of advanced support method of the gob side entry retaining working face of embodiment 2
Steps are as follows:
As shown in Figure 1, the former 2 end anchor pole 3 of support steel strip of shoulder 1 moves towards one row's anchor of construction along tunnel with inner under lane on gob side entry retaining
Cable truss 4,4 length 2.2m of anchor rope truss, 5 spacing 1.8m of anchor cable；Between anchor rope truss 4 and anchor rope truss 4, using length × wide ×
The W steel band 6 of thickness=2200 × 280 × 2.75mm connects, and 6 two ends eyelet of W steel band is pressed under anchor rope truss 4 and anchor rope truss 4
Eyelet overlapping, W steel band centre eyelet 7 break the strong thread steel type resin anchor such as MSGLD-400/20 × 2400mm (X), resin
Anchor pole cooperation W backplate, high-strength anchor disk are pressed on W steel band 6 and carry out supporting, and length × width x thickness=150 × 150 of high-strength anchor disk ×
10mm；The former 2 end anchor pole 3 of support steel strip of shoulder 8 moves towards the construction single anchor cable 5 of one row, anchor along tunnel with inner on lane on gob side entry retaining
5 spacing 2.7m of rope；The inclined lower position in tunnel top center moves towards the construction single anchor cable 5 of one row along tunnel, and single anchor cable 5 is set
Among front two rows steel band, beam length 1.2m, 5 spacing 2.7m of anchor cable；Anchor cable 5 selects 1 × 19 structure steel strand wires of Ф 22mm, long
Degree is 8.0m, and every anchor cable 5 is anchored using 3 MSK28/500 type resin anchoring agents.
A kind of advanced support method of the gob side entry retaining working face of embodiment 3
On the basis of embodiment 2, when back is crushed, the hollow grouting cable anchor of middle part anchor cable 5, stay lane advance reinforcement away from
From not less than 80m.
Test example
Through detecting, when using 50 meters of advance reinforcement of the present invention, the level amount of shifting near 123mm, the amount of crushing reaches 34mm, bottom plate bottom
Drum amount reaches 159mm；At 80 meters of advance reinforcement, the level amount of shifting near 129mm, the amount of crushing reaches 34mm, and bottom plate pucking amount reaches
To 142mm.
Claims (6)
1. a kind of advanced support method of gob side entry retaining working face, which is characterized in that advanced support method is as follows:
Shoulder original support steel strip end anchor pole moves towards one row's anchor rope truss of construction, anchor cable purlin along tunnel with inner under lane on gob side entry retaining
Frame length 2.2m, anchor cable spacing 1.8m；Between anchor rope truss and anchor rope truss, using length × width x thickness=2200 × 280 ×
The W steel band of 2.75mm connects, and W steel band two ends eyelet is pressed under anchor rope truss, W steel band among eye Chong Die with anchor rope truss eyelet
The strong thread steel type resin anchor such as MSGLD-400/20 × 2400mm (X) is made a call in hole, and resin anchor cooperates W backplate, high-strength anchor
Disk, which is pressed on W steel band, carries out supporting；Shoulder original support steel strip end anchor pole moves towards construction one along tunnel with inner on lane on gob side entry retaining
Arrange single anchor cable, anchor cable spacing 2.7m；The inclined lower position in tunnel top center moves towards the construction single anchor cable of one row along tunnel, single
Root anchor cable is set among front two rows steel band, beam length 1.2m, anchor cable spacing 2.7m.
2. advanced support method according to claim 1, which is characterized in that length × width x thickness=150 of the high-strength anchor disk
×150×10mm。
3. advanced support method according to claim 1, which is characterized in that 1 × 19 structural steel of anchor cable selection Ф 22mm
Twisted wire.
4. advanced support method according to claim 3, which is characterized in that the length of anchor cable is 8.0m.
5. advanced support method according to claim 4, which is characterized in that every anchor cable uses 3 MSK28/500 type trees
Rouge Anchor Agent is anchored.
6. advanced support method according to claim 1, which is characterized in that when back is crushed, middle part anchor cable is used
Hollow grouting cable anchor stays advance reinforcement distance in lane not less than 80m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076253.1A CN109441511A (en) | 2018-09-14 | 2018-09-14 | A kind of advanced support method of gob side entry retaining working face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811076253.1A CN109441511A (en) | 2018-09-14 | 2018-09-14 | A kind of advanced support method of gob side entry retaining working face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441511A true CN109441511A (en) | 2019-03-08 |
Family
ID=65532573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811076253.1A Pending CN109441511A (en) | 2018-09-14 | 2018-09-14 | A kind of advanced support method of gob side entry retaining working face |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441511A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374514A (en) * | 2021-07-07 | 2021-09-10 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425417A (en) * | 2011-09-23 | 2012-04-25 | 西安建筑科技大学 | Anchor cable and rough wall combined method for gob-side entry retaining stage under collapsible roof |
| CN103233748A (en) * | 2013-05-09 | 2013-08-07 | 安徽理工大学 | Anchor mesh cable column combined supporting design method for expanding extra-large span open-off cut brush into lane |
| CN106014458A (en) * | 2016-06-29 | 2016-10-12 | 河南理工大学 | Large-dip extremely-soft coal seam mining roadway anchor net special-shaped shed graded supporting technique |
| CN106089238A (en) * | 2016-08-19 | 2016-11-09 | 淮南矿业(集团)有限责任公司 | A kind of high seam driuing along goaf support system |
| CN106555602A (en) * | 2015-09-24 | 2017-04-05 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of colliery compound roof support and control method |
| CN107218069A (en) * | 2017-07-18 | 2017-09-29 | 陕西陕煤黄陵矿业有限公司 | A kind of back suspension device and method for protecting support |
-
2018
- 2018-09-14 CN CN201811076253.1A patent/CN109441511A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425417A (en) * | 2011-09-23 | 2012-04-25 | 西安建筑科技大学 | Anchor cable and rough wall combined method for gob-side entry retaining stage under collapsible roof |
| CN103233748A (en) * | 2013-05-09 | 2013-08-07 | 安徽理工大学 | Anchor mesh cable column combined supporting design method for expanding extra-large span open-off cut brush into lane |
| CN106555602A (en) * | 2015-09-24 | 2017-04-05 | 新汶矿业集团有限责任公司翟镇煤矿 | A kind of colliery compound roof support and control method |
| CN106014458A (en) * | 2016-06-29 | 2016-10-12 | 河南理工大学 | Large-dip extremely-soft coal seam mining roadway anchor net special-shaped shed graded supporting technique |
| CN106089238A (en) * | 2016-08-19 | 2016-11-09 | 淮南矿业(集团)有限责任公司 | A kind of high seam driuing along goaf support system |
| CN107218069A (en) * | 2017-07-18 | 2017-09-29 | 陕西陕煤黄陵矿业有限公司 | A kind of back suspension device and method for protecting support |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374514A (en) * | 2021-07-07 | 2021-09-10 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
| CN113374514B (en) * | 2021-07-07 | 2022-11-25 | 太原理工大学 | Method for controlling staggered-layer internal-staggered gob-side entry driving surrounding rock by anchor grouting technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201232558Y (en) | Fully-mechanized mining cutting hole full-section anchored net support | |
| CN104061001B (en) | Gob side entry retaining exploitation support process method | |
| CN106401614B (en) | One kind being used for big cross section Modelling of Tunnel Excavation in Soft Rock supporting construction and its construction method | |
| CN106593497B (en) | A kind of coal working face crosses crossheading caving place supporting processing method | |
| CN105370299B (en) | The buried empty roadway protection processing in high seam thin coal pillar edge of km | |
| CN103233748A (en) | Anchor mesh cable column combined supporting design method for expanding extra-large span open-off cut brush into lane | |
| CN103758529A (en) | Coal mine gob-side entry retaining side supporting method | |
| CN110439560A (en) | A kind of construction technology of medium-thickness seam coal working face along the lane Kong Hu | |
| CN105003288A (en) | Medium-thickness coal seam gob-side entry retaining method and support system | |
| CN206000543U (en) | A kind of supporting construction protecting lane for gob side entry retaining | |
| CN106121676A (en) | A kind of supporting construction and method for protecting support thereof protecting lane for gob side entry retaining | |
| CN109441503A (en) | A kind of method for protecting support that thin coal pillar is controlled along empty coal road mine pressure inversion | |
| CN109441511A (en) | A kind of advanced support method of gob side entry retaining working face | |
| CN105569699A (en) | Inclined shaft development support technology for isolated coal pillar | |
| CN206554947U (en) | A kind of colliery gob side entry suspension device | |
| CN204984458U (en) | Medium -thickness seam gob entry's support system | |
| CN111411978A (en) | Clamping plate type supporting structure for adjacent ore removal roadways and construction process thereof | |
| CN202467857U (en) | Mining shoring device for axial bottom syncline under coal mine | |
| CN212105908U (en) | Hydraulic support system for triangular area support of withdrawing working face | |
| CN1026605C (en) | Gallery supporting method for recovering supports and equipment on working face | |
| CN112901226A (en) | Ultra-thin roof roadway supporting method under goaf | |
| CN202731942U (en) | Super-soft ultra-thick coal seam large section open-off cut support device | |
| CN104695991A (en) | Coal mine multiple seam bolting-grouting process | |
| CN209354167U (en) | A kind of section tunnel advanced stand device | |
| CN108104813B (en) | A kind of coal-mining method by roof collapse area |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190308 |