CN106968687A - The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support - Google Patents
The closed annulus yield supporting device of half-edge coal seam stope drift active workings and method for protecting support Download PDFInfo
- Publication number
- CN106968687A CN106968687A CN201710214814.9A CN201710214814A CN106968687A CN 106968687 A CN106968687 A CN 106968687A CN 201710214814 A CN201710214814 A CN 201710214814A CN 106968687 A CN106968687 A CN 106968687A
- Authority
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- China
- Prior art keywords
- coal seam
- closed
- active workings
- drift active
- stope drift
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- 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.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
Abstract
A kind of closed annulus yield supporting device of half-edge coal seam stope drift active workings, at least two fixes sleeves and the end to end ring closed suspension device formed of at least one spacing collar are passed through by least three lonely shape support members.Set in the present invention can energy-absorbing allow crimping mouth so that while suspension device keeps certain Support Resistance supporting adjoining rock stability, allow suspension device to produce certain displacement again and allow pressure energy-absorbing, reach that supporting, energy-absorbing allow the multiple function of developing simultaneously of pressure；The scalable interface set can allow suspension device to adapt to different size of tunnel；Described method for protecting support is to be used as supporting skeleton by closed annulus yield supporting device, channel-section steel as two closed annulus yield supporting devices connecting rod.The present invention bears high pressure non-uniform load and all tunnels the features such as country rock has asymmetrical deformation suitable for similar half-edge coal seam stope drift active workings prop, is equally applicable to the gob-side entry retaining support of half-edge coal seam stope drift active workings.
Description
Technical field
The present invention relates to a kind of half-edge coal seam stope drift active workings suspension device and method for protecting support, more particularly to a kind of high-dipping
The closed annulus yield supporting device of coal mining roadway and method for protecting support.
Background technology
Half-edge coal seam refers generally to the coal seam that inclination angle is more than 45 °, and the surrounding rocks of half-edge coal seam stope drift active workings are general all
With height heterogeneity and noncontinuity, exist under numerous joint fissures, particularly lead abutment pressure effect so that
Easily there is the mutual changing of the relative positions in stratum, deformation and is presented high in the characteristics of country rock has asymmetrical deformation and prop uneven load-bearing, tunnel
The feature of asymmetry is spent, roof fall phenomenon is extremely prominent, the upper side of crossheading and lower crossheading particularly on steeply-inclined seam mining
Lower side shows extremely unstable characteristic under the influence of stress concentration, significantly increases the complexity of stope drift active workings supporting operation
And difficulty.
Half-edge coal seam tunnel is essentially all using traditional U-shaped steel contractibility suspension device and method for protecting support or I-shaped
Steel bracket suspension device and method for protecting support, steel bracket do not close into annulus typically, do not allow high pressure non-homogeneous stress state pressure, fit
Answering property is not strong.At present using it is wide be U-shaped steel can contracting formula arching device, flexible contractibility H-shaped steel supporting device,
Each there are some defects of itself in grid contractibility suspension device, above-mentioned these suspension devices and method for protecting support, compression allows
Press effect unsatisfactory, it is impossible to reach that good energy-absorbing allows pressure effect, and set up difficulty, applicability is not strong, traditional supporting
Mode and technique are difficult to being stayed without coal pillar mining along sky for the support issues for solving half-edge coal seam stope drift active workings, particularly high-dipping
Lane problem.
The content of the invention
In order to solve the above-mentioned technical problem that half-edge coal seam stope drift active workings suspension device and method for protecting support are present, this hair
It is bright to aim to provide a kind of high intensity half-edge coal seam stope drift active workings envelope simple in construction, safe and reliable, easy to operate, strong applicability
Enclosed annulus yield supporting device and its method for protecting support.
The present invention solves the technical scheme that is used of above-mentioned technical problem：A kind of half-edge coal seam stope drift active workings are closed
Annulus yield supporting device, is filled by least three lonely shape support members by the end to end ring closed supporting formed of connector
Put.
Preferably, described connector is branch sleeve, including at least two fixes sleeves and at least one stop collar
Cylinder.
Preferably, the connecting interface of the connector in fixes sleeve is parallel interface, carried out by clamp nut
Telescopic adjustment, to adapt to various sizes of tunnel.
Preferably, the connecting interface of the connector in spacing collar is corrugated interface, during flexible
Play a part of energy-absorbing and allow pressure.
Preferably, the spacing collar has at opening, opening provided with reinforcement clamp nut 4.
Preferably, having the company of multiple pairings in the connecting interface of connector in the fixes sleeve and fixes sleeve
Connect hole.
Preferably, described lonely shape support member is steel sectional material.
Preferably, the staggeredly interface length at the corrugated interface is not less than the 1/2 of overall corrugation length, it is controlled
There can be 10 ~ 30cm compression distance.
Preferably, the sidepiece of the ring closed suspension device has U-type groove.
A kind of method using described closed annulus yield supporting device supporting half-edge coal seam stope drift active workings, it is special
It is to be used as supporting skeleton by ring closed suspension device to levy, and channel-section steel comprises the following steps as the connecting rod of supporting skeleton：
（1）Need to set up in tunnel at the position of suspension device and dug circular cross section；
（2）The lonely shape support member of a lot of sections is first set up at circular cross section, and is attached with connector sleeve and bolt, circle is formed
Ring seal enclosed suspension device；
（3）According to circular tunnel size, the connecting interface in adjusting connector sleeve, and fixed with fastening bolt, make branch
Protection unit is close to tunnel palisades；
（4）The stringcourse demarcated after the completion of erection according to tunnel carries out bottom backfill, and flattens；
（5）In the case of tunneling boring high-strength closed type supporting is needed in tunnel, in the side of each two ring closed suspension device
Portion U-type groove sets up full arc channel-section steel, the distance that reserved ring closed suspension device allows needed for pressure, you can realize that tunneling boring is closed
Formula high intensity yield supporting；In the case where not needing the high-strength support conditions of tunneling boring, appropriate arc channel-section steel, added metal can will be laid
Net carries out roadway support.
Beneficial effects of the present invention：The present invention is by the way that lonely shape support member steel sectional material combined closing, into annulus, and is set
Put can energy-absorbing allow crimping mouth（That is J1 corrugated interfaces）So that suspension device can effectively realize the certain Support Resistance branch of holding
While protecting adjoining rock stability, allow suspension device to produce certain displacement again and allow pressure energy-absorbing, reach that supporting, energy-absorbing make pressure many
The function of developing simultaneously again；The scalable interface set（That is J2 parallel interfaces）Suspension device can be allowed to adapt to different size of tunnel；This
Outside, according to actual needs, the both sides U-type groove that I-steel possesses can set up channel-section steel, so as to form tunneling boring to tunnel
Closed integer support.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is present invention top J1 corrugated interfaces and sleeve B-B profiles；
Fig. 3 is J2 parallel interfaces in bottom of the present invention and sleeve A-A profiles；
Fig. 4 implements supporting I-steel for the present invention and sets up structural representation；
Fig. 5 sets up channel-section steel overall structure and method for protecting support schematic diagram for the present invention；
Fig. 6 is sectional drawing in Fig. 5.
In figure：1-G2 I-steel, 2- spacing collars, 3- fixes sleeves, 4- clamp nuts, 5-G1 I-steel, 6-G3 I-shapeds
Steel, 7- nut bores, 8-J1 corrugated interfaces, 9-J2 parallel interfaces, 10- backfill spoils, 11- arc channel-section steels.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, including G1 I-steel 5, G2 I-steel 1, G3 I-steel 6, I-shaped sleeve 3, the work of being connected
Font connects spacing collar 2 and clamp nut 4.
Described suspension device by G1 I-steel 5, G2 I-steel 1, G3 I-steel 6, the I-shaped sleeve 3 that is connected,
I-shaped spacing collar 2 and the combined closing of clamp nut 4 of connecting is into annulus.Described G2 I-steel 1 and the top of G3 I-steel 6
J1 corrugated interfaces 8 are corrugated, can play a part of energy-absorbing during compression displacement (20 ~ 50cm) and allow pressure.It is described
I-shaped connection spacing collar 2 using high rigidity thicken shape steel plate, be unlikely to deform, spacing collar bottom provided with strengthen fastening spiral shell
Mother 4, the lateral displacement of limitation J1 corrugated interfaces 8 can be functioned well as by facilitating while displacement.Described G1 I-steel 5, G2
I-steel 1 is parallel interface with the bottom J2 parallel interfaces 9 of G3 I-steel 6, can carry out telescopic adjustment by clamp nut 4, can fit
Answer different size of tunnel.There is U-type groove described H-shaped steel supporting device both sides, and arc can be set up between each two suspension device
Shape channel-section steel 11, and pressed according to tunnel situation determine two annulus suspension devices apart from L, that is to say the length of channel-section steel 11, so
The closed integer support of tunneling boring is carried out to tunnel.
The implementation process of the present invention is as follows：First, excavated at the position that erection suspension device is needed in tunnel good circular disconnected
Face, suspension device sizes and types are chosen according to section size；Next step, circular tunnel bottom position is erected at by G1 I-steel 5
Put, to good center line.And the I-shaped sleeve 3 that is connected is respectively fitted over G1 I-steel two ends, toward I-steel in the middle of move on to and expose
Interface position；Next step, sets up G2 I-steel 1, and by the lower end aligned J2 parallel interfaces 9 of G2 I-steel 1, alignment is spliced
Afterwards, the I-shaped sleeve 3 that is connected on the left side is up moved to covering J2 parallel interfaces 9, and fixed with clamp nut 4；
Now, need in advance by it is I-shaped connection spacing collar 4 be enclosed on G2 I-steel 1, and turn left be moved to expose corrugated interface position
Put；Next step, sets up G3 I-steel 6, by the lower end aligned J2 parallel interfaces 9 of G3 I-steel 6, after alignment splicing is good, by the right side
The I-shaped sleeve 3 that is connected on side is up moved to covering J2 parallel interfaces 9, and is fixed with clamp nut 4；Now, push up
The J1 corrugated interfaces 8 in portion close part, and closure length accounts for 1/2 or so of overall interface length；Next step, will be I-shaped
Connect spacing collar 4 and be moved to from G2 I-steel 1 toward top and J1 corrugated interfaces 8 are completely covered and center line is aligned, be used in combination
The fastening of clamp nut 4 is strengthened, and suspension device sets up and finished；Now, can by the I-shaped sleeve 3 that is connected, clamp nut 4 with
And nut bore 7 adjusts the J2 parallel interfaces 9 of both sides, suspension device is set to press close to tunnel palisades as far as possible；Next step, sets up and completes
Carry out bottom spoil 10 afterwards to backfill, the stringcourse demarcated according to tunnel during backfill is carried out, and after backfill, bottom plate is smooth, and front-to-back slope will
Unanimously, track is padded, must not be hanging；Now, the closed supporting of tunneling boring is if desired carried out, can be in the both sides of each two I-steel
U-type groove sets up arc channel-section steel 11, you can realize the closed supporting of tunneling boring；Finally, when tunnel starts damaged deformation, annulus branch
Protection unit be pressurized shrink, top J1 corrugated interfaces 8 be pressurized start relative displacement, suspension device proceed by energy-absorbing allow pressure branch
Shield.
Claims (10)
1. a kind of closed annulus yield supporting device of half-edge coal seam stope drift active workings, it is characterized in that, by least three lonely shape branch
The ring closed suspension device that support member passes through the end to end formation of connector.
2. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 1 or 2, its feature
It is that described connector is branch sleeve, including at least two fixes sleeves and at least one spacing collar.
3. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 2, it is characterized in that, position
It is parallel interface in the connecting interface of the connector in fixes sleeve, telescopic adjustment is carried out by clamp nut, to adapt to difference
The tunnel of size.
4. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 2, it is characterized in that, position
It is corrugated interface in the connecting interface of the connector in spacing collar, plays a part of energy-absorbing during flexible and allow pressure.
5. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 4, it is characterized in that, institute
Stating spacing collar has at opening, opening provided with reinforcement clamp nut 4.
6. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 3, it is characterized in that, institute
State the connecting hole in the connecting interface of the connector in fixes sleeve and fixes sleeve with multiple pairings.
7. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 1, it is characterized in that, institute
The lonely shape support member stated is steel sectional material.
8. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 4, it is characterized in that, institute
State the staggeredly interface length at corrugated interface and be not less than the 1/2 of overall corrugation length, control its can have 10 ~ 30cm compression away from
From.
9. the closed annulus yield supporting device of half-edge coal seam stope drift active workings according to claim 1, it is characterized in that, institute
Stating the sidepiece of ring closed suspension device has U-type groove.
10. a kind of side of closed annulus yield supporting device supporting half-edge coal seam stope drift active workings as claimed in claim 1
Method, it is characterized in that be used as supporting skeleton by ring closed suspension device, channel-section steel as supporting skeleton connecting rod, including with
Lower step：
（1）Need to set up in tunnel at the position of suspension device and dug circular cross section；
（2）The lonely shape support member of a lot of sections is first set up at circular cross section, and is attached with connector sleeve and bolt, circle is formed
Ring seal enclosed suspension device；
（3）According to circular tunnel size, the connecting interface in adjusting connector sleeve, and fixed with fastening bolt, make branch
Protection unit is close to tunnel palisades；
（4）The stringcourse demarcated after the completion of erection according to tunnel carries out bottom backfill, and flattens；
（5）In the case of tunneling boring high-strength closed type supporting is needed in tunnel, in the side of each two ring closed suspension device
Portion U-type groove sets up full arc channel-section steel, the distance that reserved ring closed suspension device allows needed for pressure, you can realize that tunneling boring is closed
Formula high intensity yield supporting；In the case where not needing the high-strength support conditions of tunneling boring, appropriate arc channel-section steel, added metal can will be laid
Net carries out roadway support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214814.9A CN106968687B (en) | 2017-04-01 | 2017-04-01 | Closed type circular ring yielding support device and method for mining roadway of steep coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710214814.9A CN106968687B (en) | 2017-04-01 | 2017-04-01 | Closed type circular ring yielding support device and method for mining roadway of steep coal seam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106968687A true CN106968687A (en) | 2017-07-21 |
| CN106968687B CN106968687B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710214814.9A Active CN106968687B (en) | 2017-04-01 | 2017-04-01 | Closed type circular ring yielding support device and method for mining roadway of steep coal seam |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108019228A (en) * | 2018-01-17 | 2018-05-11 | 安徽理工大学 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method |
| CN109057831A (en) * | 2018-10-30 | 2018-12-21 | 湖南科技大学 | A kind of partition type suspension device and method for protecting support for underground large section roadway |
| CN112065461A (en) * | 2020-10-22 | 2020-12-11 | 中国矿业大学(北京) | Deep round tunnel anti-impact supporting method |
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108019228A (en) * | 2018-01-17 | 2018-05-11 | 安徽理工大学 | A kind of flexibility allow pressure improvement floor lift in gallery combined retaining structure and its construction method |
| CN109057831A (en) * | 2018-10-30 | 2018-12-21 | 湖南科技大学 | A kind of partition type suspension device and method for protecting support for underground large section roadway |
| CN112065461A (en) * | 2020-10-22 | 2020-12-11 | 中国矿业大学(北京) | Deep round tunnel anti-impact supporting method |
| CN112065461B (en) * | 2020-10-22 | 2021-09-28 | 中国矿业大学(北京) | Deep round tunnel anti-impact supporting method |
| CN117307191A (en) * | 2023-11-28 | 2023-12-29 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
| CN117307191B (en) * | 2023-11-28 | 2024-03-22 | 中煤科工开采研究院有限公司 | Rock burst roadway anchor-frame-charging coupling support system, method and monitoring system |
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