CN105626111A - Telescopic two-ended anchor cable for two-direction reinforcing of coal pillar - Google Patents
Telescopic two-ended anchor cable for two-direction reinforcing of coal pillar Download PDFInfo
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- CN105626111A CN105626111A CN201510997211.1A CN201510997211A CN105626111A CN 105626111 A CN105626111 A CN 105626111A CN 201510997211 A CN201510997211 A CN 201510997211A CN 105626111 A CN105626111 A CN 105626111A
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- Prior art keywords
- anchor cable
- section
- rearmounted
- preposition
- wedge
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- 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
- E21D21/008—Anchoring or tensioning means
Abstract
The invention discloses a telescopic two-ended anchor cable for two-direction reinforcing of a coal pillar. The anchor cable comprises an anchor cable front section, an anchor cable rear section and a telescopic sleeve. The telescopic sleeve comprises a fixed sleeve and a connection sleeve. The connection sleeve is an internal thread metal pipe. The fixed sleeve is an external threaded metal pipe. The two metal pipes are connected through threads. The connection sleeve is connected with the anchor cable front section. The fixed sleeve is connected with the anchor cable rear section. The anchor cable rear section comprises a rear anchor cable body. A wedge-shaped rubber clamping ring is arranged at the inner end of the rear anchor cable body. A wedge-shaped opening is formed in the inner end of the fixed sleeve. After penetrating into the fixed sleeve, the inner end of the rear anchor cable body is clamped to the wedge-shaped opening through the wedge-shaped rubber clamping ring. The two-ended anchor cable is drilled into one side of the coal pillar in a goaf, the other side of the coal pillar is tunneled after a period of time, the rear section of the two-ended anchor cable is stretched or lengthened and fixed, in this way, even the two sides of the coal pillar are not constructed at the same time, the purpose of reinforcing the coal pillar in two directions can also be achieved, and the supporting capacity of the coal pillar to a top plate is greatly improved.
Description
Technical field
The present invention relates to a kind of coal column reinforcement technique, particularly relate to the flexible type two-ended cables of a kind of two-way reinforcing of coal column.
Background technology
Gob-side entry driving technology refers to stay near worked-out section side establishes the coal column of 4��6m as " divider wall prop ", along another side digging laneway of coal column, replace conventional 15��30m width coal column, the territory, area of stress concentration so can improve coal resources recovery ratio, reducing on coal column. Its advantage is: 1. adopts coal column as " divider wall prop ", compared with gob-side entry retaining, need not manually build isolation body of wall again, avoid constructional difficulties, avoids support material transport, saves support material expense. 2. the operating efficiency height of coal road roadheader pick now, under general geologic condition, monthly drilling depth 400��600m, gob-side entry driving is easy to realize.
Gob-side entry driving relies on pillar tunnel top board, so needing pillar ability to be strengthened, adopts two-ended cables to reinforce coal column from both sides, it is possible to greatly to improve pillar ability. Owing to the coal column both sides mining engineering engineering time differs more than at least 1 year, time construction in new pick side, worked-out section side is closed already, existing anchor cable can not complete to coal column to wearing reinforcing, it does not have available two-ended cables.
Using two-ended cables during the two-way reinforcing of rock mass more of the prior art, this technology must be construct in rock mass both sides simultaneously, if can not construct simultaneously, cannot realize two-way reinforcing.
Summary of the invention
It is an object of the invention to provide a kind of coal column two-way reinforcing type two-ended cables that stretches conveniently realizing two-way reinforcing.
It is an object of the invention to be achieved through the following technical solutions:
The two-way reinforcing of the coal column of the present invention, with flexible type two-ended cables, is comprised preposition section of anchor cable and rearmounted section of anchor cable, is connected by telescopic shaft between rearmounted with anchor cable section of preposition section of described anchor cable;
Preposition section of described anchor cable comprises preposition anchor cable body, and the outer end of described preposition anchor cable body is provided with lockset and pallet, and inner and described telescopic shaft is connected;
Described telescopic shaft comprises fixed muffle and joint sleeve, described joint sleeve is thread metal, and described fixed muffle is outside screw metal tube, and two metal tubes are threaded connection, described joint sleeve is connected with preposition section of described anchor cable, and described fixed muffle is connected with rearmounted section of described anchor cable;
Rearmounted section of described anchor cable comprises rearmounted anchor cable body, the outer end of described rearmounted anchor cable body is provided with lockset and pallet, the inner is provided with wedge-shaped rubber snap ring, the inner of described fixed muffle is provided with wedge-shaped opening, the inner of described rearmounted anchor cable body is stuck on described wedge-shaped opening by described wedge-shaped rubber snap ring after wearing described fixed muffle.
As seen from the above technical solution provided by the invention, the coal column that the embodiment of the present invention the provides two-way reinforcing type two-ended cables that stretches, can first bore into two-ended cables in coal column side, worked-out section, another side of coal column is tunneled after for some time, section after two-ended cables is elongated or connect and grows and fix, even if do not construct in the two side of coal column like this, it is also possible to reaches the object of two-way reinforcing coal column simultaneously, greatly improve coal column to the supporting capacity of top board. The puzzlement that when solving two-ended cables consolidating crack, worked-out section is closed, also solves the two side of rock mass and constructs simultaneously and cause the puzzlement of prearranged pillar instability.
Accompanying drawing explanation
The one-piece construction schematic diagram of the flexible type two-ended cables of the two-way reinforcing of coal column that Fig. 1 provides for the embodiment of the present invention.
Preposition section of structural representation of the flexible type two-ended cables of the two-way reinforcing of coal column that Fig. 2 provides for the embodiment of the present invention.
Fig. 3 a is telescopic shaft structure iron in the embodiment of the present invention;
Fig. 3 b is the A portion amplification assumption diagram of Fig. 3 a.
Rearmounted section of structural representation of the flexible type two-ended cables of the two-way reinforcing of coal column that Fig. 4 provides for the embodiment of the present invention.
The scheme of installation of the flexible type two-ended cables of the two-way reinforcing of coal column that Fig. 5 provides for the embodiment of the present invention.
Complete installation schematic diagram after the elongation of the flexible type two-ended cables of the two-way reinforcing of coal column that Fig. 6 provides for the embodiment of the present invention.
In figure:
1-lockset, 2-pallet, the rearmounted anchor cable body of 3-, 4-telescopic end fixed muffle, 5-telescopic shaft, 6-wedge-shaped rubber snap ring, the preposition anchor cable body of 7-.
Embodiment
The embodiment of the present invention will be described in further detail below.
The two-way reinforcing of the coal column of the present invention with flexible type two-ended cables, its preferably embodiment be:
Comprise preposition section of anchor cable and rearmounted section of anchor cable, it is connected by telescopic shaft between rearmounted with anchor cable section of preposition section of described anchor cable;
Preposition section of described anchor cable comprises preposition anchor cable body, and the outer end of described preposition anchor cable body is provided with lockset and pallet, and inner and described telescopic shaft is connected;
Described telescopic shaft comprises fixed muffle and joint sleeve, described joint sleeve is thread metal, and described fixed muffle is outside screw metal tube, and two metal tubes are threaded connection, described joint sleeve is connected with preposition section of described anchor cable, and described fixed muffle is connected with rearmounted section of described anchor cable;
Rearmounted section of described anchor cable comprises rearmounted anchor cable body, the outer end of described rearmounted anchor cable body is provided with lockset and pallet, the inner is provided with wedge-shaped rubber snap ring, the inner of described fixed muffle is provided with wedge-shaped opening, the inner of described rearmounted anchor cable body is stuck on described wedge-shaped opening by described wedge-shaped rubber snap ring after wearing described fixed muffle.
Pin after compressing with compacting device between described joint sleeve and preposition section of described anchor cable, the diameter 17.8��22mm of preposition section of described anchor cable.
Described joint sleeve length is 1000mm��1500mm, and described fixed muffle length is 300mm.
The coal column of the present invention two-way reinforcing type two-ended cables that stretches, first bore into two-ended cables in coal column side, worked-out section, another side of coal column is tunneled after for some time, section after two-ended cables is elongated or connect and grows and fix, even if do not construct in the two side of coal column so simultaneously, the object of two-way reinforcing coal column can also be reached, greatly improve coal column to the supporting capacity of top board. The puzzlement that when solving two-ended cables consolidating crack, worked-out section is closed, also solves the two side of rock mass and constructs simultaneously and cause the puzzlement of prearranged pillar instability.
Specific embodiment:
As shown in Figure 1, comprising preposition section of anchor cable, telescopic shaft and anchor cable rearmounted section of three parts, before and after anchor cable, section is connected by telescopic shaft, regulates the rearmounted segment length of anchor cable to adapt to different coal pillar width by telescopic shaft.
As shown in Figure 1, key part comprises following three parts to one-piece construction of the present invention:
(1) flexible preposition section of type two-ended cables
Such as Fig. 2, comprise lockset 1, pallet 2, joint sleeve 5, preposition anchor cable body 7.
Anchor cable body commonly uses diameter 17.8��22mm, can select according to actual needs; Anchor cable body front end pins anchor cable after being compressed by compacting device, thus is fixed in joint sleeve; Pallet and lockset are conventional components, it is not necessary to describe in detail.
Carry out anchoring in 2500��3500mm position of preposition section of anchor cable, anchoring agent first colligation on anchor cable body, with anchor cable one piece send into boring, utilize rig to stir brokenly anchoring agent and reach anchoring effect in the middle part of anchor cable.
(2) telescopic shaft
Such as Fig. 3 a, Fig. 3 b, comprise fixed muffle 4 and joint sleeve 5. Joint sleeve is interior cutting thread high tensile metal pipe, and fixed muffle is outer cutting thread high tensile metal pipe, and two metal tube screw threads coincide and interlock. Joint sleeve plays the effect demarcated anchor cable front and rear fragment position and connect anchor cable front and rear section, and general length is 1000mm��1500mm, depending on practical situation; Telescopic end fixed muffle plays the effect of rearmounted section of fixing two-ended cables, prevents anchor cable from running out of, and general length is 300mm, depending on practical situation.
(3) flexible rearmounted section of type two-ended cables
Such as Fig. 4, comprise lockset 1, pallet 2, rearmounted anchor cable body 3, wedge-shaped rubber snap ring 6 and telescopic shaft.
Joint sleeve is interior cutting thread high tensile metal pipe, and fixed muffle is outer cutting thread high tensile metal pipe, and two metal tube screw threads coincide and interlock; Anchor cable body stretches into joint sleeve, and permanent sleeve is enclosed within adapter sleeve rear end, and anchor cable body rear end stationary wedge rubber snap ring, prevents anchor cable body from running out of.
The constructional method of specific embodiment:
(1) flexible type two-ended cables preposition section of technology implementation
Preposition section of two-ended cables processing: first intercept appropriate length anchor cable body, by anchor cable body winding steel wire, utilize special thread reaming machine to be crept on rotation limit, anchor cable limit in the steel pipe of flexible adapter sleeve front end, then utilize compacting device to pin inboardend before preposition anchor cable, last spray anti-rust oil, completes to make.
(2) telescopic shaft technology implementation
Telescopic shaft is made up of joint sleeve and telescopic end fixed muffle. Joint sleeve is interior cutting thread high tensile metal pipe, and fixed muffle is outer cutting thread high tensile metal pipe, and two metal tube screw threads coincide and interlock. Wedge shape is processed in fixed muffle one end, matches with two-ended cables rearmounted section of wedge-shaped rubber snap ring. Last spray anti-rust oil, completes to make.
(3) flexible type two-ended cables rearmounted section of technology implementation
Rearmounted section of two-ended cables processing: by anchor cable body winding steel wire, utilizing special thread reaming machine to creep in the steel pipe of adapter sleeve rear end by rotation limit, anchor cable limit, the processing wedged rubber snap ring in two-ended cables rearmounted section of one end, matches with the fixed muffle of telescopic shaft, last spray anti-rust oil, completes to make.
Flexible type two-ended cables general description of construction:
1. first holing, aperture is at least greater than the maximum external diameter 2mm of two-ended cables, and drilling depth exceedes design coal pillar width; 2. then installing preset anchor cable, at anchor cable preposition section of 2500��3500mm position colligation resin anchoring agent, anchoring agent and flexible adapter sleeve pull open certain distance, and preset anchor cable is put into boring; 3. start rig and stir brokenly anchoring agent, make anchor cable preposition section of smooth anchoring, last Prestressing upper tray lockset again, as shown in Figure 5; 4. until next adopt face newly dig tunnel time, by coal column hole in the elongation of rearmounted section of preset anchor cable, last Prestressing upper tray lockset again. As shown in Figure 6.
The useful effect that technical solution of the present invention is brought:
The present invention proposes the flexible type two-ended cables of a kind of two-way reinforcing of coal column, it is possible to reinforces gob-side entry driving coal column, greatly improves coal column stability, ensures new pick tunnel stability of cavern roof.
The puzzlement that when the invention solves two-ended cables consolidating crack, worked-out section is closed, also solves the two side of rock mass and constructs simultaneously and cause the puzzlement of prearranged pillar instability.
In specific embodiment, telescopic end fixed muffle can be soldered in joint sleeve, equally within protection domain.
The technology key point of the present invention is:
(1) for preposition section of flexible type two-ended cables and the rearmounted section of telescopic shaft being connected, joint sleeve and telescopic end fixed muffle is comprised.
(2) preposition section of anchor cable of the present invention adopts the anchoring process of stage casing colligation anchoring agent.
(3) two-ended cables elongates anchor cable, to reach the two-way technology implementation method to wearing reinforcing in the construction of coal body side early stage in another side of coal column when the later stage newly digs tunnel.
The above; it is only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, any it is familiar with those skilled in the art in the technical scope of present disclosure; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim book.
Claims (3)
1. the coal column two-way reinforcing type two-ended cables that stretches, it is characterised in that, comprise preposition section of anchor cable and rearmounted section of anchor cable, it is connected by telescopic shaft between rearmounted with anchor cable section of preposition section of described anchor cable;
Preposition section of described anchor cable comprises preposition anchor cable body, and the outer end of described preposition anchor cable body is provided with lockset and pallet, and inner and described telescopic shaft is connected;
Described telescopic shaft comprises fixed muffle and joint sleeve, described joint sleeve is thread metal, and described fixed muffle is outside screw metal tube, and two metal tubes are threaded connection, described joint sleeve is connected with preposition section of described anchor cable, and described fixed muffle is connected with rearmounted section of described anchor cable;
Rearmounted section of described anchor cable comprises rearmounted anchor cable body, the outer end of described rearmounted anchor cable body is provided with lockset and pallet, the inner is provided with wedge-shaped rubber snap ring, the inner of described fixed muffle is provided with wedge-shaped opening, the inner of described rearmounted anchor cable body is stuck on described wedge-shaped opening by described wedge-shaped rubber snap ring after wearing described fixed muffle.
2. the two-way reinforcing of the coal column according to claim 1 type two-ended cables that stretches, it is characterised in that, pinning after being compressed by same compacting device between described joint sleeve and preposition section of described anchor cable, the diameter 17.8��22mm of preposition section of described anchor cable.
3. the two-way reinforcing of the coal column according to claim 2 type two-ended cables that stretches, it is characterised in that, described joint sleeve length is 1000mm��1500mm, and described fixed muffle length is 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997211.1A CN105626111B (en) | 2015-12-25 | 2015-12-25 | A kind of coal column two-way reinforcing concertina type two-ended cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510997211.1A CN105626111B (en) | 2015-12-25 | 2015-12-25 | A kind of coal column two-way reinforcing concertina type two-ended cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105626111A true CN105626111A (en) | 2016-06-01 |
| CN105626111B CN105626111B (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510997211.1A Active CN105626111B (en) | 2015-12-25 | 2015-12-25 | A kind of coal column two-way reinforcing concertina type two-ended cables |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736865A (en) * | 2019-03-19 | 2019-05-10 | 河南理工大学 | A kind of gob side entry driving coal column dowel structure and its assembling and field installation process |
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| US20090191006A1 (en) * | 2008-01-29 | 2009-07-30 | Seegmiller Ben L | Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts |
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| CN103899342A (en) * | 2014-04-15 | 2014-07-02 | 中国矿业大学(北京) | Gob-side entrydriving coal pillar anchor cable through reinforcing method |
| CN204200254U (en) * | 2014-10-31 | 2015-03-11 | 济南深博矿山设备有限公司 | A kind of coal column is reinforced and is used two-way two-ended cables |
| CN204419213U (en) * | 2014-12-02 | 2015-06-24 | 中国矿业大学(北京) | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking |
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2015
- 2015-12-25 CN CN201510997211.1A patent/CN105626111B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090191006A1 (en) * | 2008-01-29 | 2009-07-30 | Seegmiller Ben L | Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts |
| CN103016035A (en) * | 2012-12-27 | 2013-04-03 | 辽宁工程技术大学 | Abdicating buffer energy-absorbing shock-proof anchor rod cable for coal mine |
| CN103899342A (en) * | 2014-04-15 | 2014-07-02 | 中国矿业大学(北京) | Gob-side entrydriving coal pillar anchor cable through reinforcing method |
| CN204200254U (en) * | 2014-10-31 | 2015-03-11 | 济南深博矿山设备有限公司 | A kind of coal column is reinforced and is used two-way two-ended cables |
| CN204419213U (en) * | 2014-12-02 | 2015-06-24 | 中国矿业大学(北京) | A set of high pre-stress girders anchorage cable linkage being convenient to stretch-draw and locking |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736865A (en) * | 2019-03-19 | 2019-05-10 | 河南理工大学 | A kind of gob side entry driving coal column dowel structure and its assembling and field installation process |
| CN109736865B (en) * | 2019-03-19 | 2024-02-06 | 河南理工大学 | Gob-side entry driving coal pillar anchor bar structure and assembly and field installation method thereof |
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| Publication number | Publication date |
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| CN105626111B (en) | 2018-02-23 |
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