CN106761913B - A kind of method and its structure that the drop shaft drop section effectively improving stability blocks - Google Patents
A kind of method and its structure that the drop shaft drop section effectively improving stability blocks Download PDFInfo
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- CN106761913B CN106761913B CN201611173012.XA CN201611173012A CN106761913B CN 106761913 B CN106761913 B CN 106761913B CN 201611173012 A CN201611173012 A CN 201611173012A CN 106761913 B CN106761913 B CN 106761913B
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- drop shaft
- layer
- drop
- ore
- anchor
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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 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
Abstract
The invention discloses a kind of methods and its structure that the drop shaft drop section for effectively improving stability blocks, the following steps are included: 1) prize hair: all around carrying out sled hair to drop shaft mouth and drop shaft first, rock is tapped with crowbar, the not clear and melodious rock of sound oppressiveness is prized down with crowbar, float stone is cleared up, guarantees construction environment safety without hidden danger；2) drop shaft fills out mine: filling drop shaft with ore, by filling ore leveling, spreads barrier layer；3) anchor pole is set: opening anchor hole on the drop shaft side wall between barrier layer and drop shaft mouth, Anchor Agent is inserted into anchor hole together with anchor pole, anchor pole horizontal annular on the side wall of drop shaft is provided with two layers, and insertion is in the reinforcing steel that groined type is arranged on two layers of anchor pole；4) drop shaft blocks: the casting concrete into drop shaft, pours range and covers geotextiles for barrier layer to drop shaft mouth, after concreting and conserved, the ore plate of drop shaft mouth is finally completely covered in the capping of drop shaft mouth, completes drop shaft closure.
Description
Technical field
The invention belongs to mining technology and equipment technical fields, and in particular to a kind of drop shaft drop section for effectively improving stability
The method and its structure of closure.
Background technique
Since mine is mostly very high, ore transport frequently, for improve transport efficiency save the cost, can mine from top to bottom
The pipeline for getting through a similar well, from top to bottom directly topples over ore, referred to as drop shaft.Drop shaft refers to be slipped from top to bottom using self weight
On the one hand transport efficiency can be improved in the pit shaft of ore drawing stone or barren rock, on the other hand, can play certain powder ore and make
With.Stope box is predominantly located in inside ore body, using rectilinear arrangement, is arranged in by through-vein transporting drift, several layerings
The same nugget shares a drop shaft and first carries out kerve when mining engineering carries out back production, then move back from cutting groove toward thing both sides
It adopts.Due to a segmentation only cutting groove (as soon as part increases section cutting groove), from east westerly back production when must pass through it
Its through-vein transporting drift after a upper substoping has passed through through-vein transporting drift, is worn in order to ensure next segmentation continues to use this
Arteries and veins drop shaft it is necessary to back production will by stope box block, abbreviation drop shaft drop section block.
Drop shaft closure should be secured, cannot be impacted and damage by pressure by upper segmentation blasted ore-rock, and next point after cannot influencing
The ore removal of section.In the prior art drop shaft drop section plugging structure some beat anchor pole in pit shaft using the equipment such as skip bucket and poured again
It builds, often stability is poor, and severe bends modification easily occurs by the ore-rock impact of upper segmentation slump, cannot play safety catch
Effect, hardly possible ensure safety completely；Also the drop shaft drop section plugging structure having first reuses fine sand, plastic coat etc. with ore filling
Filling, but this method there are the problem of it is also very much, it is many firstly because since the height of ore filling is generally all in several hundred rice
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 to be even filled into drop shaft
Lower section just can be more smooth, and considerably increases the ore dressing difficulty and preparation equipment for being used for this part ore of filling later
Pressure；In addition it is mostly single layer anchor pole that previous drop section, which blocks, and endurance is weaker, is easy to happen entirety and falls, in addition single layer anchor pole
Hidden danger is larger when construction, has certain gap after ore filling, and slightly accidentally, when construction construction personnel, which is easy to slip, falls.It is right
The drop shaft relatively more long using the time in some, well head is caving deformation, safety is lower, and stability is worse, it is therefore necessary to
Develop the drop section blocking technology of a kind of raising drop shaft drop section closure stability and safety.
Summary of the invention
The first object of the present invention is to provide a kind of method that the drop shaft drop section for effectively improving stability blocks, the second mesh
Be provide it is a kind of effectively improve stability drop shaft drop section plugging structure.
The first object of the present invention be achieved in that the following steps are included:
1) it prizes hair: sled hair all around being carried out to drop shaft mouth and drop shaft first, tap rock with crowbar, sound oppressiveness is not clear and melodious
Rock prized down with crowbar, to clear up float stone, guarantee construction environment safety without hidden danger；
2) drop shaft fills out mine: being filled under drop shaft to well head at 1.5 ~ 5m with ore, by filling ore leveling, spreads 0.1 ~ 0.3m
Barrier layer；
3) anchor pole is set: anchor hole is opened on the drop shaft side wall between barrier layer and drop shaft mouth, by anchor pole together with Anchor Agent
It is inserted into anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two layers, and insertion is arranged in groined type on two layers of anchor pole
Reinforcing steel；
4) drop shaft blocks: the casting concrete into drop shaft, and pouring range is barrier layer to drop shaft mouth, covers after concreting
It lid geotextiles and is conserved, curing period is 8 ~ 10 days, finally covers in drop shaft mouth and the ore plate of drop shaft mouth is completely covered, complete
Drop shaft blocks.
The second object of the present invention is achieved in that the drop shaft is by filling including drop shaft, filled layer and concrete component
Layer and the filling of concrete component block, it is characterised in that the filled layer includes ore layer and the barrier that is arranged on ore layer
Layer；The concrete that the concrete component includes structural framework and pours, the structural framework includes anchor pole and reinforces steel, described
Anchor pole by the way that, to be arranged on the side wall of drop shaft, the anchor pole is in drop shaft in the anchor hole that is provided on drop shaft side wall of insertion
Side wall on horizontal annular be provided with two layers, respectively upper bolt layer and lower bolt layer, well of the upper bolt layer close to drop shaft
Mouthful, steel, the reinforcing are reinforced in insertion to the lower bolt layer on barrier layer, the upper bolt layer and lower bolt layer
Steel is arranged in groined type on upper bolt layer and lower bolt layer；The top of the drop shaft, which covers, the mine that well head is completely covered
Slabstone.
Beneficial effects of the present invention:
1, method for blocking of the present invention is simple, effectively shortens the construction time, improves the fastness and safety of block section,
It ensures closure quality, has ensured that personnel, equipment safety and production continue.
2, drop shaft of the present invention blocks securely, can neither be impacted and damage by pressure by upper segmentation blasted ore-rock, and is easy to remove, not shadow
The ore removal for ringing next segmentation, can prevent drop shaft bending deformation under impact, effectively play the effect of safety catch.
3, the present invention uses the ore screening of small particle, further improves the firm of ore layer filling, between ore between
Gap is small, and endurance is high, directly uses cotton as barrier layer, leaks into ore layer when on the one hand obstructing concreting, another
Aspect is avoided using fine sand, convenient and easy, and cotton can take out recycling after removing closure.
4, the present invention uses two layers of anchor pole, and steel is reinforced in insertion, is effectively improved the endurance of stability and anchor pole, is avoided
The case where entirety is fallen or collapsed, has the drop shaft for being caving deformation especially suitable at of long duration, well head；The setting of lower bolt layer
Subsequent construction can be carried out as workbench later, thus construction personnel easily slips caused by avoiding no workbench
The problem of falling；The present invention is provided with the ore plate for covering all drop shaft mouth in drop shaft mouth, increases forced area, further increases
Safety coefficient reduces security risk.
Detailed description of the invention
Fig. 1 is the structural diagram of the present 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 Fig. 1；
In figure: 1- drop shaft, 2- ore layer, 3- barrier layer, 4- concrete component, 5- anchor pole, 6- reinforce steel, 7- ore plate, 8- point
Duan Liandao.
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention is further illustrated, but is not subject in any way to the present invention
Limitation, based on present invention teach that it is made it is any transform or replace, all belong to the scope of protection of the present invention.
The method that the drop shaft drop section for effectively improving stability as described in the embodiment of the present invention and attached drawing blocks, including it is following
Step:
1) it prizes hair: sled hair all around being carried out to drop shaft mouth and drop shaft first, tap rock with crowbar, sound oppressiveness is not clear and melodious
Rock prized down with crowbar, to clear up float stone, guarantee construction environment safety without hidden danger；
2) drop shaft fills out mine: being filled under drop shaft to well head at 1.5 ~ 5m with ore, by filling ore leveling, spreads 0.1 ~ 0.3m
Barrier layer；
3) anchor pole is set: anchor hole is opened on the drop shaft side wall between barrier layer and drop shaft mouth, by anchor pole together with Anchor Agent
It is inserted into anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two layers, and insertion is arranged in groined type on two layers of anchor pole
Reinforcing steel；
4) drop shaft blocks: the casting concrete into drop shaft, and pouring range is barrier layer to drop shaft mouth, covers after concreting
It lid geotextiles and is conserved, curing period is 8 ~ 10 days, finally covers in drop shaft mouth and the ore plate of drop shaft mouth is completely covered, complete
Drop shaft blocks.
Maintenance described in step 4) is to sprinkle water to be conserved twice daily on concrete.
A kind of drop shaft drop section plugging structure effectively improving stability, including drop shaft 1, filled layer and concrete component 4, it is described
Drop shaft 1 is blocked by filled layer and the filling of concrete component 4, and the filled layer includes ore layer 2 and the resistance that is arranged on ore layer 2
Interlayer 3；The concrete component 4 includes structural framework and the concrete poured, and the structural framework includes anchor pole 5 and reinforcing steel
6, the anchor hole that the anchor pole 5 is provided on 1 side wall of drop shaft by insertion is interior to be arranged on the side wall of drop shaft 1, described
The horizontal annular on the side wall of drop shaft 1 of anchor pole 5 is provided with two layers, respectively upper bolt layer and lower bolt layer, the upper bolt layer
Close to the well head of drop shaft 1, insertion adds the lower bolt layer on barrier layer 3, the upper bolt layer and lower bolt layer
Gu steel 6, the reinforcing steel 6 is arranged in groined type on upper bolt layer and lower bolt layer；The top of the drop shaft 1 covers
There is the ore plate 7 that well head is completely covered.
The ore layer 2 is filled by the ore that particle size is no more than 1 diameter 1/8 of drop shaft.
The barrier layer 3 is filled by cotton.
The depth of the anchor hole is 0.7 ~ 1.5m.
The length of the anchor pole 5 is 1.5 ~ 3m, diameter 20mm.
The distance between described upper bolt layer and lower bolt layer are 0.9 ~ 3.2m, and the upper bolt layer and lower bolt
Layer is provided with 4 ~ 20 anchor poles 5.
The upper bolt layer and lower bolt layer is provided with 6 ~ 16 anchor poles 5.
The upper bolt layer and lower bolt layer is provided with 9 ~ 11 anchor poles 5.
The lower bolt layer is that 22.5o setting is rotated horizontally relative to upper bolt layer.
The reinforcing steel 6 has 4, and is the screw-thread steel of diameter 20mm.
The working 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, beats anchor hole in the side wall of drop shaft 1 and then add Anchor Agent by anchor pole 5 to suitable position
Insertion is laid with lower bolt layer, reinforcing steel 6 is embedded in lower bolt layer, embedding grammar is to clamp using more anchor poles 5 by steel 6 is reinforced
Rather than directly reinforcing steel is placed on above lower bolt layer, 4 reinforcing steel 6 are laid to groined type, then with lower bolt layer work
It is laid with upper bolt layer for workbench, then is embedded in and reinforces steel 6, last cast-in-place C20 concrete drop section is blocked to the well head of drop shaft 1, maintenance 8 ~
10 days, finally cover ore plate 7.
Embodiment 1
1) prize hair: the drop shaft mouth and drop shaft for treating drop section closure first all around carry out sled hair, rock are tapped with crowbar, by sound
The not clear and melodious rock of sound oppressiveness is prized down with crowbar, to clear up float stone, guarantees construction environment safety without hidden danger；2) drop shaft fills out mine:
It is no more than under the ore filling drop shaft to well head of drop shaft diameter 1/8 with particle size at 1.5m, filling ore leveling is spread
The cotton barrier layer of 0.1m；3) anchor pole is set: opening the anchor that depth is 0.7m on the drop shaft side wall between barrier layer and drop shaft mouth
Anchor Agent is inserted into anchor hole by hole together with anchor pole, and the length of anchor pole is 1.5m, diameter 20mm, side wall of the anchor pole in drop shaft
Upper horizontal annular is provided with two layers, and two layers of anchor pole is provided with 4, and the distance between two layers of anchor pole is 0.9m, on two layers of anchor pole
Insertion is in the reinforcing steel that groined type is arranged；4) drop shaft blocks: C20 concrete is poured into drop shaft, pouring range is barrier layer
Geotextiles are covered to drop shaft mouth, after concreting and are sprinkled water on concrete daily is conserved twice, curing period is 8 days,
The ore plate of drop shaft mouth is finally completely covered in the capping of drop shaft mouth, completes drop shaft and blocks.
The method for blocking of embodiment 1 is simple, effectively shortens the construction time, improves the fastness and safety of block section
Property, it is ensured that quality is blocked, has ensured that personnel, equipment safety and production continue.
Embodiment 2
1) prize hair: the drop shaft mouth and drop shaft for treating drop section closure first all around carry out sled hair, rock are tapped with crowbar, by sound
The not clear and melodious rock of sound oppressiveness is prized down with crowbar, to clear up float stone, guarantees construction environment safety without hidden danger；2) drop shaft fills out mine:
It is no more than under the ore filling drop shaft to well head of drop shaft diameter 1/8 with particle size at 5m, by filling ore leveling, spreads 0.3m
Cotton barrier layer；3) anchor pole is set: opening the anchor hole that depth is 1.5m on the drop shaft side wall between barrier layer and drop shaft mouth, it will
Anchor Agent is inserted into anchor hole together with anchor pole, and the length of anchor pole is 3m, diameter 20mm, anchor pole horizontal loops on the side wall of drop shaft
Shape is provided with two layers, and two layers of anchor pole is provided with 20, and the distance between two layers of anchor pole is 3.2m, on two layers of anchor pole insertion be in
The reinforcing steel of groined type setting；4) drop shaft blocks: pouring C20 concrete into drop shaft, pours range as barrier layer to drop shaft
Mouthful, geotextiles and sprinkling water on concrete daily are covered after concreting and are conserved twice, and curing period is 10 days, is finally existed
Drop shaft mouth covers the ore plate that drop shaft mouth is completely covered, and completes drop shaft and blocks.
The method for blocking of embodiment 2 is simple, effectively shortens the construction time, improves the fastness and safety of block section
Property, it is ensured that quality is blocked, has ensured that personnel, equipment safety and production continue.
Embodiment 3
1) prize hair: the drop shaft mouth and drop shaft for treating drop section closure first all around carry out sled hair, rock are tapped with crowbar, by sound
The not clear and melodious rock of sound oppressiveness is prized down with crowbar, to clear up float stone, guarantees construction environment safety without hidden danger；2) drop shaft fills out mine:
It is no more than under the ore filling drop shaft to well head of drop shaft diameter 1/8 with particle size at 3m, by filling ore leveling, spreads 0.2m
Cotton barrier layer；3) anchor pole is set: the anchor hole that depth is 1m is opened on the drop shaft side wall between barrier layer and drop shaft mouth, by anchor
Gu agent is inserted into anchor hole together with anchor pole, the length of anchor pole is 2m, diameter 20mm, anchor pole horizontal annular on the side wall of drop shaft
It is provided with two layers, two layers of anchor pole is provided with 12, and the distance between two layers of anchor pole is 1.2m, and insertion is in well on two layers of anchor pole
The reinforcing steel of font setting；4) drop shaft blocks: C20 concrete is poured into drop shaft, pouring range is barrier layer to drop shaft mouth,
Geotextiles are covered after concreting and are sprinkled water on concrete daily and are conserved twice, and curing period is 9 days, finally in drop shaft
Mouth covers the ore plate that drop shaft mouth is completely covered, and completes drop shaft and blocks.
The method for blocking of embodiment 3 is simple, effectively shortens the construction time, improves the fastness and safety of block section
Property, it is ensured that quality is blocked, has ensured that personnel, equipment safety and production continue.
Embodiment 4
It is blocked using Dahongshan 400m segmentation K402 and K605 drop shaft drop section as embodiment: bis- drop shafts of K402 and K605
Well head is caving deformation, and 400m segmentation 8# nugget in deep mining falls mine to K402 drop shaft, and 9# nugget falls mine to K605 drop shaft.Two
Drop shaft parameter is essentially identical, drop shaft mouth approximate ellipsoidal, and long and short side average diameter is respectively 8m, 7m, oval perimeters 23.55m,
About 43.96 ㎡ of area, blocking height is 3m, and single drop shaft blocks volume about 130m3, uses cast-in-place C20 concrete plug, anchor bolt construction
Two layers, 1.9m is spent between single layer anchor pole, construct 24 Ф 20, L=2.5m anchor pole, it is put into the 7m long screw-thread steel of 8 Ф 20 in work progress,
Skeleton is used as in intersecting parallels arrangement.
Claims (8)
1. a kind of method that the drop shaft drop section for effectively improving stability blocks, it is characterised in that the described method comprises the following steps:
1) it prizes hair: sled hair all around being carried out to drop shaft mouth and drop shaft first, rock is tapped with crowbar, by the not clear and melodious rock of sound oppressiveness
Stone is prized down with crowbar, to clear up float stone, guarantees construction environment safety without hidden danger；
2) drop shaft fills out mine: being filled under drop shaft to well head at 1.5 ~ 5m with ore, the particle size of ore is no more than drop shaft diameter 1/
8, by filling ore leveling, the barrier layer of 0.1 ~ 0.3m is spread, barrier layer is filled by cotton；
3) anchor pole is set: opening anchor hole on the drop shaft side wall between barrier layer and drop shaft mouth, anchor pole is inserted into together with Anchor Agent
In anchor hole, anchor pole horizontal annular on the side wall of drop shaft is provided with two layers, and insertion adds in what groined type was arranged on two layers of anchor pole
Gu steel, embedding grammar is to be lived using more anchor poles by steel clamp is reinforced；
4) drop shaft blocks: the casting concrete into drop shaft, and pouring range is barrier layer to drop shaft mouth, overburden soil after concreting
It work cloth and is conserved, curing period is 8 ~ 10 days, finally covers in drop shaft mouth and the ore plate of drop shaft mouth is completely covered, complete drop shaft
It blocks.
2. according to the method described in claim 1, it is characterized in that maintenance described in step 4) is to sprinkle water on concrete daily
It is conserved twice.
3. the drop shaft drop section plugging structure that one kind obtains method according to claim 1, including drop shaft (1), filled layer and concrete
Component (4), the drop shaft (1) are blocked by filled layer and concrete component (4) filling, it is characterised in that the filled layer includes mine
Rock layers (2) and the barrier layer (3) being arranged on ore layer (2), ore layer (2) are no more than drop shaft (1) diameter by particle size
1/8 ore is filled, and barrier layer (3) is filled by cotton；The concrete component (4) includes structural framework and pours
Concrete, the structural framework include anchor pole (5) and reinforce steel (6), and the anchor pole (5) is provided with drop shaft by insertion
(1) to be arranged on the side wall of drop shaft (1) in the anchor hole on side wall, the anchor pole (5) is horizontal on the side wall of drop shaft (1)
Annular is provided with two layers, respectively upper bolt layer and lower bolt layer, the upper bolt layer close to drop shaft (1) well head, it is described
Steel (6) are reinforced in insertion to lower bolt layer on barrier layer (3), the upper bolt layer and lower bolt layer, the reinforcing steel
(6) it is arranged in groined type on upper bolt layer and lower bolt layer；The top of the drop shaft (1) covers and well head is completely covered
Ore plate (7).
4. section plugging structure drops in drop shaft according to claim 3, it is characterised in that the depth of the anchor hole is 0.7 ~ 1.5m.
5. section plugging structure drops in drop shaft according to claim 3, it is characterised in that the length of the anchor pole (5) is 1.5 ~
3m, diameter 20mm.
6. section plugging structure drops in drop shaft according to claim 3, it is characterised in that the upper bolt layer and lower bolt layer it
Between distance be 0.9 ~ 3.2m, and the upper bolt layer and lower bolt layer are provided with 4 ~ 20 anchor poles (5).
7. section plugging structure drops in drop shaft according to claim 3, it is characterised in that the lower bolt layer is relative to upper anchor
Bar layer rotates horizontally 22.5o setting.
8. section plugging structure drops in drop shaft according to claim 3, it is characterised in that the reinforcing steel (6) has 4, and is straight
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 |
|---|---|---|---|
| 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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| CN106761913A CN106761913A (en) | 2017-05-31 |
| CN106761913B true CN106761913B (en) | 2019-06-07 |
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Families Citing this family (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 |
| CN108843389B (en) * | 2018-05-21 | 2020-11-06 | 金川集团股份有限公司 | Stope drop shaft collapse treatment method |
| 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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| CN103032045A (en) * | 2012-12-19 | 2013-04-10 | 玉溪大红山矿业有限公司 | Plugging method and plugging device for high sub-level open draw shaft mouth |
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| CN103032045A (en) * | 2012-12-19 | 2013-04-10 | 玉溪大红山矿业有限公司 | Plugging method and plugging device for high sub-level open draw shaft mouth |
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