CN106761913A - A kind of method and its structure of the drop shaft drop section closure for effectively improving steadiness - Google Patents
A kind of method and its structure of the drop shaft drop section closure for effectively improving steadiness Download PDFInfo
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- CN106761913A CN106761913A CN201611173012.XA CN201611173012A CN106761913A CN 106761913 A CN106761913 A CN 106761913A CN 201611173012 A CN201611173012 A CN 201611173012A CN 106761913 A CN106761913 A CN 106761913A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 11
- 239000004575 stone Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 121
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 229920000742 Cotton Polymers 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 2
- 239000004746 geotextile Substances 0.000 abstract description 4
- 230000011218 segmentation Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000032258 transport Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of method and its structure of the drop shaft drop section closure for effectively improving steadiness, comprise the following steps：1）Sled hair：Sled hair is all around carried out to drop shaft mouthful and drop shaft first, rock is tapped with crowbar, under the dull not clear and melodious rock of sound is prized with crowbar, clear up float stone, it is ensured that construction environment safety is without hidden danger；2）Drop shaft fills out ore deposit：Drop shaft is filled with ore, by filling ore leveling, separation layer is spread；3）Anchor pole is set：Anchor hole is opened on the drop shaft side wall between separation layer and drop shaft mouthful, Anchor Agent is inserted together with anchor pole in anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two-layer, the embedded reinforcing steel set in groined type on two-layer anchor pole；4）Drop shaft is blocked：The casting concrete toward drop shaft, it is separation layer to drop shaft mouthful to pour scope, geotextiles is covered after concrete cast and is conserved, and the ore plate that drop shaft mouthful is completely covered finally is added a cover in drop shaft mouth, completes drop shaft closure.
Description
Technical field
The invention belongs to mining technology and equipment technical field, and in particular to a kind of drop shaft drop section for effectively improving steadiness
The method and its structure of closure.
Background technology
Because mine is mostly very high, ore transports frequent, cost-effective to improve transport efficiency, can be in mine from top to bottom
A pipeline for similar well is got through, ore, referred to as drop shaft is from top to bottom directly toppled over.Drop shaft refers to be slipped from top to bottom using deadweight
The pit shaft of ore drawing stone or barren rock, on the one hand can improve transport efficiency, on the other hand, can play certain powder ore and make
With.Stope box is most to be located at ore body the inside, using rectilinear arrangement, is arranged in by through-vein transporting drift, several layerings
Same nugget shares a drop shaft, when mining engineering carries out back production, first carries out kerve, is then moved back toward thing both sides from cutting groove
Adopt.Because a segmentation only has a cutting groove（It is local to increase by one section of cutting groove）, just must be by it when eastern westerly back production
Its through-vein transporting drift, a upper substoping in order to ensure next segmentation is continuing with this by after through-vein transporting drift, wearing
It is necessary to be blocked to the stope box that back production will pass through, abbreviation drop shaft drop section is blocked arteries and veins drop shaft.
Drop shaft closure should be firm, it is impossible to is impacted by upper segmentation blasted ore-rock and damaged by pressure, next point can not influence again after
The ore removal of section.In the prior art drop shaft drop section plugging structure some anchor pole beaten in pit shaft using equipment such as skip buckets poured again
Build, often steadiness is poor, severe bends modification is easily occurred by the ore-rock impact of upper one segmentation slump, it is impossible to play safety catch
Effect, hardly possible ensures safety completely；Also the drop shaft drop section plugging structure having first is filled with ore and reuses fine sand, plastic coat etc.
Filling, but the problem that this method is present is also a lot, firstly because because the height of ore filling is general all at hundreds of meters, it is many
The granularity of well known ore is larger, thus gap is larger, and fine sand filling not only needs a large amount of fine sands or even is filled into drop shaft
Hypomere just can be more smooth, and is used for the ore dressing difficulty of this part ore filled and preparation equipment after considerably increasing
Pressure；Other conventional drop section closure is generally individual layer anchor pole, and endurance is weaker, is susceptible to entirety and falls, in addition individual layer anchor pole
Hidden danger is larger during construction, has certain space after ore filling, and somewhat accidentally, workmen easily slips and drops during construction.It is right
The drop shaft of deformation is caving in some use times relatively long, well head, security is lower, and steadiness is worse, it is therefore necessary to
A kind of drop section blocking technology for improving drop shaft drop section closure steadiness and security of exploitation.
The content of the invention
The first object of the present invention is to provide a kind of method of the drop shaft drop section closure for effectively improving steadiness, the second mesh
Be that a kind of drop shaft drop section plugging structure for effectively improving steadiness is provided.
The first object of the present invention is achieved in that and comprises the following steps：
1）Sled hair：Sled hair is all around carried out to drop shaft mouthful and drop shaft first, rock is tapped with crowbar, by the dull not clear and melodious rock of sound
Under stone is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；
2）Drop shaft fills out ore deposit：With ore fill drop shaft to well head under 1.5 ~ 5m locate, will filling ore flatten, spread 0.1 ~ 0.3m every
Absciss layer；
3）Anchor pole is set：Anchor hole is opened on drop shaft side wall between separation layer and drop shaft mouthful, anchor pole is inserted together with Anchor Agent
In anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two-layer, embedded in adding that groined type is set on two-layer anchor pole
Gu steel；
4）Drop shaft is blocked：The casting concrete toward drop shaft, it is separation layer to drop shaft mouthful, overburden soil after concrete cast to pour scope
Work cloth and conserved, curing period is 8 ~ 10 days, the ore plate that drop shaft mouthful is completely covered finally is added a cover in drop shaft mouth, completed drop shaft
Closure.
The second object of the present invention is achieved in that described drop shaft is by filling including drop shaft, packed layer and concrete component
Layer and concrete component fill closure, it is characterised in that described packed layer includes ore layer and the obstruct being arranged on ore layer
Layer；Described concrete component includes structural framework and the concrete for pouring, and described structural framework includes anchor pole and reinforces steel, described
Anchor pole be opened on the wall of drop shaft side by insertion anchor hole in so as to be arranged on the side wall of drop shaft, described anchor pole is in drop shaft
Side wall on horizontal annular be provided with two-layer, respectively upper bolt layer and lower bolt layer, well of the upper bolt layer near drop shaft
Mouthful, near barrier layer, described upper bolt layer is embedded with lower bolt layer to reinforce steel, described reinforcing to described lower bolt layer
Steel is set on upper bolt layer and lower bolt layer in groined type；The ore deposit that well head is completely covered is added a cover above described drop shaft
Slabstone.
Beneficial effects of the present invention：
1st, method for blocking of the present invention is simple, effectively shortens the engineering time, improves the fastness and security of block section, it is ensured that
Closure quality, has ensured that personnel, equipment safety and production continue.
2nd, drop shaft closure of the present invention is firm, can neither be impacted by upper segmentation blasted ore-rock and damaged by pressure, and easily removes, not shadow
The ore removal of the next segmentation of sound, is prevented from drop shaft flexural deformation under impact, effectively plays the effect of safety stop.
3rd, the present invention further increases the firm of ore layer filling using the ore screening of small particle, between ore between
Gap is small, and endurance is high, directly uses cotton as barrier layer, and ore layer is leaked into when on the one hand intercepting concreting, another
Aspect avoids using fine sand, convenient and easy, and cotton can take out recycling after closure is removed.
4th, the present invention uses two-layer anchor pole, and embedded reinforcing steel, effectively improves the endurance of steadiness and anchor pole, it is to avoid
The situation that entirety is fallen or collapsed, has the drop shaft for being caving deformation especially suitable for of long duration, well head；Lower bolt layer is set
Follow-up construction can be carried out as workbench afterwards, thus workmen easily slips caused by avoiding no workbench
The problem for falling；The present invention is provided with the ore plate for covering all drop shaft mouthful in drop shaft mouth, increases lifting surface area, further improves
Safety coefficient, reduces potential safety hazard.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the top view of upper bolt layer in Fig. 1；
Fig. 4 is the top view of lower bolt layer in 1；
In figure：1- drop shafts, 2- ore layers, 3- barrier layers, 4- concretes component, 5- anchor poles, 6- reinforce steel, 7- ores plate, 8- segmentation connection
Road.
Specific embodiment
With reference to embodiment and accompanying drawing, the present invention is further illustrated, but the present invention is subject to never in any form
Limitation, based on present invention teach that any conversion or replacement made, belong to protection scope of the present invention.
The method of the drop shaft for the effectively improving steadiness drop section closure as described in the embodiment of the present invention and accompanying drawing, including it is following
Step：
1）Sled hair：Sled hair is all around carried out to drop shaft mouthful and drop shaft first, rock is tapped with crowbar, by the dull not clear and melodious rock of sound
Under stone is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；
2）Drop shaft fills out ore deposit：With ore fill drop shaft to well head under 1.5 ~ 5m locate, will filling ore flatten, spread 0.1 ~ 0.3m every
Absciss layer；
3）Anchor pole is set：Anchor hole is opened on drop shaft side wall between separation layer and drop shaft mouthful, anchor pole is inserted together with Anchor Agent
In anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two-layer, embedded in adding that groined type is set on two-layer anchor pole
Gu steel；
4）Drop shaft is blocked：The casting concrete toward drop shaft, it is separation layer to drop shaft mouthful, overburden soil after concrete cast to pour scope
Work cloth and conserved, curing period is 8 ~ 10 days, the ore plate that drop shaft mouthful is completely covered finally is added a cover in drop shaft mouth, completed drop shaft
Closure.
Step 4）Described in maintenance to be sprinkled water on concrete and conserved twice daily.
A kind of drop shaft drop section plugging structure for effectively improving steadiness, including drop shaft 1, packed layer and concrete component 4, it is described
Drop shaft 1 fills closure, the resistance that described packed layer includes ore layer 2 and is arranged on ore layer 2 by packed layer and concrete component 4
Interlayer 3；Described concrete component 4 includes structural framework and the concrete for pouring, and described structural framework includes anchor pole 5 and reinforces steel
6, described anchor pole 5 is opened in the anchor hole on the side wall of drop shaft 1 so as to be arranged on the side wall of drop shaft 1 by insertion, described
The horizontal annular on the side wall of drop shaft 1 of anchor pole 5 is provided with two-layer, respectively upper bolt layer and lower bolt layer, the upper bolt layer
Near the well head of drop shaft 1, described lower bolt layer is close to barrier layer 3, and described upper bolt layer is embedded with lower bolt layer to be added
Gu steel 6, described reinforcing steel 6 is set on upper bolt layer and lower bolt layer in groined type；Add a cover the top of described drop shaft 1
There is the ore plate 7 that well head is completely covered.
Described ore layer 2 is formed by particle size no more than the ore filling of the diameter 1/8 of drop shaft 1.
Described barrier layer 3 is formed by cotton filling.
The depth of described anchor hole is 0.7 ~ 1.5m.
The length of described anchor pole 5 is 1.5 ~ 3m, a diameter of 20mm.
The distance between described upper bolt layer and lower bolt layer are 0.9 ~ 3.2m, and described upper bolt layer and lower bolt
Layer is provided with 4 ~ 20 anchor poles 5.
Described upper bolt layer is provided with 6 ~ 16 anchor poles 5 with lower bolt layer.
Described upper bolt layer is provided with 9 ~ 11 anchor poles 5 with lower bolt layer.
Described lower bolt layer is set relative to 22.5 o of upper bolt layer horizontal rotation.
Described reinforcing steel 6 has 4, and is the screw-thread steel of diameter 20mm.
Operation principle of the invention and the course of work：The drop shaft 1 that section to be dropped is blocked is carried out using the ore by screening
Then filling adds cotton as barrier layer 3 to correct position, beats anchor hole in the side wall of drop shaft 1 and then adds Anchor Agent by anchor pole 5
Embedded, reinforcing steel 6 is embedded in lower bolt layer by laying lower bolt layer, and embedding grammar is to be clamped steel 6 is reinforced using many anchor poles 5
Rather than reinforcing steel is directly placed on lower bolt layer top, 4 reinforcing steel 6 are laid to groined type, are then made with lower bolt layer
Be workbench laying upper bolt layer, then it is embedded reinforce steel 6, last cast-in-place C20 concretes drop section is blocked to the well head of drop shaft 1, maintenance 8 ~
10 days, finally add a cover ore plate 7, you can.
Embodiment 1
1）Sled hair：The drop shaft mouthful and drop shaft for treating drop section closure first all around carry out sled hair, and rock is tapped with crowbar, and sound is sunk
Under vexed not clear and melodious rock is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；2）Drop shaft fills out ore deposit：With grain
Footpath size no more than drop shaft diameter 1/8 ore filling drop shaft to well head under 1.5m place, will filling ore flatten, spread 0.1m's
Cotton separation layer；3）Anchor pole is set：The anchor hole that depth is 0.7m is opened on drop shaft side wall between separation layer and drop shaft mouthful, by anchor
Gu agent is inserted in anchor hole together with anchor pole, the length of anchor pole is 1.5m, a diameter of 20mm, anchor pole horizontal loops on the side wall of drop shaft
Shape is provided with two-layer, and two-layer anchor pole is provided with 4, and the distance between two-layer anchor pole is 0.9m, and insertion is on two-layer anchor pole
The reinforcing steel that groined type is set；4）Drop shaft is blocked：C20 concrete is poured toward drop shaft, it is separation layer to drop shaft to pour scope
Mouthful, geotextiles being covered after concrete cast and daily watering on concrete is conserved twice, curing period is 8 days, is finally existed
Drop shaft mouth adds a cover the ore plate that drop shaft mouthful is completely covered, and completes drop shaft closure.
The method for blocking of embodiment 1 is simple, effectively shortens the engineering time, improves the fastness and safety of block section
Property, it is ensured that closure quality, ensure that personnel, equipment safety and production continue.
Embodiment 2
1）Sled hair：The drop shaft mouthful and drop shaft for treating drop section closure first all around carry out sled hair, and rock is tapped with crowbar, and sound is sunk
Under vexed not clear and melodious rock is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；2）Drop shaft fills out ore deposit：With grain
Footpath size no more than drop shaft diameter 1/8 ore filling drop shaft to well head under 5m place, will filling ore flatten, spread the cotton of 0.3m
Flower separation layer；3）Anchor pole is set：The anchor hole that depth is 1.5m is opened on drop shaft side wall between separation layer and drop shaft mouthful, will be anchored
Agent is inserted in anchor hole together with anchor pole, and the length of anchor pole is 3m, and a diameter of 20mm, anchor pole horizontal annular on the side wall of drop shaft sets
Two-layer is equipped with, two-layer anchor pole is provided with 20, and the distance between two-layer anchor pole is 3.2m, embedded on two-layer anchor pole is in well word
The reinforcing steel that shape is set；4）Drop shaft is blocked：C20 concrete is poured toward drop shaft, it is separation layer to drop shaft mouthful to pour scope, is mixed
Cover geotextiles and sprinkled water on concrete daily after solidifying soil cast and conserved twice, curing period is 10 days, finally in drop shaft
Mouth adds a cover the ore plate that drop shaft mouthful is completely covered, and completes drop shaft closure.
The method for blocking of embodiment 2 is simple, effectively shortens the engineering time, improves the fastness and safety of block section
Property, it is ensured that closure quality, ensure that personnel, equipment safety and production continue.
Embodiment 3
1）Sled hair：The drop shaft mouthful and drop shaft for treating drop section closure first all around carry out sled hair, and rock is tapped with crowbar, and sound is sunk
Under vexed not clear and melodious rock is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；2）Drop shaft fills out ore deposit：With grain
Footpath size no more than drop shaft diameter 1/8 ore filling drop shaft to well head under 3m place, will filling ore flatten, spread the cotton of 0.2m
Flower separation layer；3）Anchor pole is set：The anchor hole that depth is 1m is opened on drop shaft side wall between separation layer and drop shaft mouthful, by Anchor Agent
Inserted together with anchor pole in anchor hole, the length of anchor pole is 2m, and a diameter of 20mm, anchor pole horizontal annular on the side wall of drop shaft is set
There is two-layer, two-layer anchor pole is provided with 12, and the distance between two-layer anchor pole is 1.2m, embedded on two-layer anchor pole is in groined type
The reinforcing steel of setting；4）Drop shaft is blocked：C20 concrete is poured toward drop shaft, it is separation layer to drop shaft mouthful, coagulation to pour scope
Covering geotextiles and daily watering on concrete are conserved twice after soil cast, and curing period is 9 days, is finally added in drop shaft mouthful
Lid is completely covered the ore plate of drop shaft mouthful, completes drop shaft closure.
The method for blocking of embodiment 3 is simple, effectively shortens the engineering time, improves the fastness and safety of block section
Property, it is ensured that closure quality, ensure that personnel, equipment safety and production continue.
Embodiment 4
Blocked as embodiment using Dahongshan 400m segmentation K402 and K605 drop shaft drop sections：Bis- drop shaft well heads of K402 and K605
It is caving deformation, 400m segmentation 8# nuggets in deep mining fall ore deposit to K402 drop shafts, 9# nuggets fall ore deposit to K605 drop shafts.Two drop shafts
Parameter is essentially identical, and drop shaft mouthful approximate ellipsoidal, long and short side average diameter is respectively 8m, 7m, oval perimeters 23.55m, area
About 43.96 ㎡, closure height is 3m, and single drop shaft blocks volume about 130m3, uses cast-in-place C20 concrete plugs, anchor bolt construction two
1.9m is spent between layer, individual layer anchor pole, construct 24 Ф 20, L=2.5m anchor poles are put into 8 7m screw-thread steels long of Ф 20, are in work progress
Intersecting parallels is arranged as skeleton.
Claims (10)
1. a kind of method that drop shaft drop section for effectively improving steadiness is blocked, it is characterised in that the described method comprises the following steps：
1）Sled hair：Sled hair is all around carried out to drop shaft mouthful and drop shaft first, rock is tapped with crowbar, by the dull not clear and melodious rock of sound
Under stone is prized with crowbar, so as to clear up float stone, it is ensured that construction environment safety is without hidden danger；
2）Drop shaft fills out ore deposit：With ore fill drop shaft to well head under 1.5 ~ 5m locate, will filling ore flatten, spread 0.1 ~ 0.3m every
Absciss layer；
3）Anchor pole is set：Anchor hole is opened on drop shaft side wall between separation layer and drop shaft mouthful, anchor pole is inserted together with Anchor Agent
In anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two-layer, embedded in adding that groined type is set on two-layer anchor pole
Gu steel；
4）Drop shaft is blocked：The casting concrete toward drop shaft, it is separation layer to drop shaft mouthful, overburden soil after concrete cast to pour scope
Work cloth and conserved, curing period is 8 ~ 10 days, the ore plate that drop shaft mouthful is completely covered finally is added a cover in drop shaft mouth, completed drop shaft
Closure.
2. the method that the drop shaft drop section for effectively improving steadiness according to claim 1 is blocked, it is characterised in that step 4）
Described in maintenance to be sprinkled water on concrete and conserved twice daily.
3. a kind of drop shaft drop section plugging structure for effectively improving steadiness according to claim 1, including drop shaft（1）, fill out
Fill layer and concrete component（4）, described drop shaft（1）By packed layer and concrete component（4）Filling closure, it is characterised in that described filling
Layer includes ore layer（2）Be arranged on ore layer（2）On barrier layer（3）；Described concrete component（4）Including structural framework and
The concrete for pouring, described structural framework includes anchor pole（5）With reinforcing steel（6）, described anchor pole（5）It is opened in by insertion
Drop shaft（1）So as to be arranged on drop shaft in anchor hole on the wall of side（1）Side wall on, described anchor pole（5）In drop shaft（1）Side wall on
Horizontal annular is provided with two-layer, respectively upper bolt layer and lower bolt layer, and the upper bolt layer is near drop shaft（1）Well head, institute
The lower bolt layer stated is near barrier layer（3）, described upper bolt layer is embedded with lower bolt layer to reinforce steel（6）, described adds
Gu steel（6）Set in groined type on upper bolt layer and lower bolt layer；Described drop shaft（1）Top added a cover and be completely covered
The ore plate of well head（7）.
4. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described ore deposit
Rock layers（2）Drop shaft is no more than by particle size（1）The ore filling of diameter 1/8 is formed.
5. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described resistance
Interlayer（3）Formed by cotton filling.
6. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described anchor
The depth in hole is 0.7 ~ 1.5m.
7. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described anchor
Bar（5）Length be 1.5 ~ 3m, a diameter of 20mm.
8. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described is upper
The distance between anchor pole layer and lower bolt layer are 0.9 ~ 3.2m, and described upper bolt layer is provided with 4 ~ 20 with lower bolt layer
Anchor pole（5）.
9. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that under described
Anchor pole layer is set relative to 22.5 o of upper bolt layer horizontal rotation.
10. section plugging structure drops in the drop shaft for effectively improving steadiness according to claim 3, it is characterised in that described adds
Gu steel（6）There are 4, and be the screw-thread steel of diameter 20mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173012.XA CN106761913B (en) | 2016-12-18 | 2016-12-18 | A kind of method and its structure that the drop shaft drop section effectively improving stability blocks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611173012.XA CN106761913B (en) | 2016-12-18 | 2016-12-18 | A kind of method and its structure that the drop shaft drop section effectively improving stability blocks |
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| CN106761913B CN106761913B (en) | 2019-06-07 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108678806A (en) * | 2018-05-07 | 2018-10-19 | 宝钢集团新疆八钢铁有限公司 | A kind of method for blocking of Underground drop shaft |
| CN108843389A (en) * | 2018-05-21 | 2018-11-20 | 金川集团股份有限公司 | A kind of Stope chute, which collapses, emits the method for processing |
| CN110159339A (en) * | 2019-06-04 | 2019-08-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of underground drop shaft enclosed construction and its enclosure method |
| CN111928744A (en) * | 2020-07-24 | 2020-11-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Rapid full-descending method for open mine support drop shaft |
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| CN111928744A (en) * | 2020-07-24 | 2020-11-13 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Rapid full-descending method for open mine support drop shaft |
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