CN105386766B - The reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation - Google Patents
The reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation Download PDFInfo
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- CN105386766B CN105386766B CN201511025411.7A CN201511025411A CN105386766B CN 105386766 B CN105386766 B CN 105386766B CN 201511025411 A CN201511025411 A CN 201511025411A CN 105386766 B CN105386766 B CN 105386766B
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- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000002787 reinforcement Effects 0.000 title claims abstract description 19
- 238000005422 blasting Methods 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 29
- 239000011435 rock Substances 0.000 claims abstract description 19
- 238000005065 mining Methods 0.000 claims abstract description 17
- 239000002360 explosive Substances 0.000 claims abstract description 11
- 239000012895 dilution Substances 0.000 claims abstract description 5
- 238000010790 dilution Methods 0.000 claims abstract description 5
- 230000006378 damage Effects 0.000 claims abstract description 4
- 238000005553 drilling Methods 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 210000001367 artery Anatomy 0.000 abstract description 3
- 210000003462 vein Anatomy 0.000 abstract description 3
- 230000009514 concussion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000035123 developmental delay, impaired growth, dysmorphic facies, and axonal neuropathy Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The reinforcement presplitting method for protecting support for the extremely broken upper disk top plate that the present invention exploits for shallow hole shrinkage method, it is an object of the invention to provide a kind of maintaining method of the extremely broken upper disk top plate of steeply inclined thin arteries and veins to middle thickness orebody shrinkage mining, spaced loading presplit blasting is not coupled or does not couple by multiple fan-shaped deep holes of upper disk ore-rock interface, it is to avoid mining process borehole blasting vibrations further damage upper disk top plate；Do not coupled by deep hole or do not couple the upper disk roof rock beyond the reinforcing bar reinforcement presplit blasting face that explosive cartridge is bundled in spaced loading, and by the anchor pole in shallow hole shrinkage method mining process, the stope reinforcing bar that progressively the upper disk top plate of exposure and the sector of indwelling are distributed in bar net combined supporting body supporting mining process, collectively form the support protection network of disk top plate, so as to avoid disk top plate from collapsing and increase the rate of dilution, also stope is avoided to be scrapped because collapsing upper disk top plate, the present invention is presplit blasting, deep hole does not couple or not coupled the integrated innovation of spaced loading and anchor pole bar net supporting.
Description
Technical field
The invention belongs to mining technique field, the presplitting for being related to the extremely broken upper disk top plate of shallow hole shrinkage method exploitation is quick-fried
Broken shock-dampening method, is directed to the advanced reinforcement method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation, especially relates to
And a kind of reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation.
Background technology
When the upper disk top plate of exploitation extremely broken steeply inclined thin arteries and veins to middle thickness orebody, often occur top plate and collapse and cause poor
Rate increased dramatically, and even results in stope and scraps.
The content of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide a kind of pole of shallow hole shrinkage method exploitation
The reinforcement presplitting method for protecting support of its broken upper disk top plate, it is possible to decrease the rate of dilution, it is to avoid stope is scrapped because of upper disk roof caving,
Ensure safety, the economic exploitation.
To achieve these goals, the technical solution adopted by the present invention is：
The reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation, it is characterised in that upper
When the presplit blasting of disk ore-rock interface deep hole 4 further damages upper disk top plate so as to avoid mining process borehole blasting from shaking, with bundle
Tie up adhesive tape 11 reinforcing bar 7 that explosive cartridge 10 is bundled in slightly larger than the length of deep hole 4 is implemented into deep hole and do not couple or do not couple spaced loading
Reinforcing bar 7 is retained in deep hole 4 after presplit blasting, presplit blasting, forms the advance support of the fan-shaped distribution of disk top plate on stope 9
Body.
When shrinkage mining undercuts and falls ore deposit rock drilling every time, total length across strike is moved towards in row's mounting bar net 6 and anchor in stope 9
The progressively upper disk top plate (namely top plate beyond presplit blasting face) of exposure and the indwelling of stope 9 in the combined supporting mining process of bar 5
Fan-shaped distribution reinforcing bar 7, so as to be retained in the reinforcing bar 7 in deep hole 4 when bar net 6 and the combined supporting body of anchor pole 5 are with presplit blasting
Form the common carrying prop of disk top plate on stope 9, it is ensured that extremely disk top plate is falling ore deposit and ore drawing process on broken stope 9
In not inbreak, so as to avoid disk top plate on stope 9 from collapsing and increase the rate of dilution, also avoid stope 9 from being reported because collapsing upper disk top plate
It is useless.
Depending on the fan-shaped arrangement number of presplitting deep hole 4 is according to roof stability and Pre-splitting Blasting Effect, general top plate is more broken
When the number of fan-shaped deep hole 4 arranged is more, total dose for not coupling in single deep hole 4 or not coupling spaced loading is fewer so that
On the premise of Pre-splitting Blasting Effect is ensured, so that the reinforcing bar 7 of indwelling in more broken top plate is more intensive.
1 number for entering the fan-shaped deep hole 4 that drilling chamber 3 is constructed through connecting taxiway 2 of being gone up a hill from every is generally 15~27.
Along the array pitch of the supporting of top plate incline direction bar net 6 according to depending on the specific steadiness of top plate, general array pitch is 1.5~
3.0m.The spacing of the supporting of anchor pole 5 is according to depending on the specific steadiness of top plate, and general spacing is 1.0~2.0m.Bar net 6 one
As with 2Round bar spacing 110mm, and with discarded steel bar end or the 800~1000mm spot welding of handle iron interval
Into its length typically grows 2~3m depending on the convenience of transport.Reinforcing bar (7) specification is
Compared with prior art, the beneficial effects of the invention are as follows：
1) the large area presplit blasting of deep hole 4, separates the disk top plate on stope 9 of the concussion of blasting in shrinkage method mining process and encloses
Propagation in rock, this technique yet there are no use in mining process.
2) slightly larger than not coupling of being made of reinforcing bar 7 primacord 8, the explosive 10 that bundle of the depth of the deep hole 4 or not coupling by length
Close spaced loading structure to be one by one fitted into deep hole 4, after great Qu elementary errors presplit blastings, indwelling reinforcing bar 7 is as beyond presplit blasting face
Upper disk roof rock reinforcement prop.
3) anchor pole 5 of immediate support, the combined supporting body of bar net 6 and presplit blasting during undercuting, falling ore deposit rock drilling every time
The reinforcing bar 7 of middle indwelling collectively forms the support protection network of disk top plate on stope 9.
Brief description of the drawings
Fig. 1 is principle schematic diagram of the present invention.
Embodiment
Describe embodiments of the present invention in detail with reference to the accompanying drawings and examples.
As shown in figure 1, extremely being broken the invention provides what a kind of steeply inclined thin arteries and veins to middle thickness orebody shallow hole shrinkage method was exploited
The reinforcement presplitting method for protecting support of broken upper disk top plate.Do not coupled by the deep hole 4 of multiple fan-shaped arrangements at upper disk ore-rock interface
Or spaced loading presplit blasting is not coupled, further explosion of the cut-off mining process borehole blasting vibrations to disk top plate on stope 9 is shaken
Dynamic damage, and do not couple by deep hole or do not couple bundled in spaced loading the reinforcement presplit blasting face of reinforcing bar 7 of explosive cartridge 10 with
Outer upper disk roof rock, and combine shallow hole shrinkage method mining process in anchor pole 5, the combined supporting body of bar net 6 progressively adopt by supporting
The reinforcing bar 7 of indwelling in the upper disk top plates of the exposure of field 9 and presplit blasting, the reinforcing bar 7 of anchor pole 5, the combined supporting body of bar net 6 and indwelling is total to
With the support protection network for constituting disk top plate on stope 9, so as to avoid disk top plate on stope 9 from collapsing and increase the rate of dilution, also avoid
Stope 9 is scrapped because collapsing upper disk top plate.
The specific steps of the present invention include：
Go up a hill or way shaft 1 the vertical ore body in middle part on stope 9 disk level tunnel connecting taxiway 2.When connecting taxiway 2 is arrived
Up to after ore-rock line of demarcation, connecting taxiway 2 is expanded into drilling chamber 3.Dig fan-shaped along ore-rock interface by Fig. 1 in drilling chamber 3
Deep hole 4.The depth capacity of deep hole 4 is up to 35m.
After the whole rock drilling of fan-shaped deep hole 4 are finished, the primacord 8 that is bundled on reinforcing bar 7 of the length slightly larger than the depth of deep hole 4,
Explosive cartridge 10 is made in explosive 9, and cooperation does not couple or do not couple spaced loading structure to be fitted into deep hole 4 one by one, general sector deep hole
When depth is more than 20~25m, it is made simultaneously of binding 2 explosive cartridges 10 of binding of adhesive tape 11 on reinforcing bar 7 and does not couple continuous charging
Structure；General sector deep hole depth is in 10~15m to 20~25m, and 1 explosive cartridge 10 of binding, which is made, on reinforcing bar 7 does not couple
Continuous charging structure；Within 10~15m of aperture, 1 explosive cartridge 10 of binding, which is made, on reinforcing bar 7 does not couple spaced loading structure；
3~5m of aperture bundlees explosive cartridge 10 typically not on reinforcing bar 7.
Before shallow hole shrinkage method exploitation undercuts, first go up a hill or the horizontally disposed drilling chamber 3 in middle part of way shaft 1 in edge
The fan-shaped presplit blasting of deep hole 4 of upper disk ore-rock interface, so as to avoid mining process borehole blasting vibrations from further damaging upper disk top plate.
During presplit blasting powder charge, using great Qu short-delay blastings, the ore-rock of disk is demarcated on the disposable whole stope 9 of presplit blasting
Face.
After the completion of presplit blasting, start stope 9 and undercut, fall ore deposit, and the timely anchor pole during undercuting every time, falling ore deposit rock drilling
5th, the combined supporting stope 9 of bar net 6 progressively exposure upper disk roof rock and presplit blasting in indwelling reinforcing bar 7, anchor pole 5, bar net 6
Combined supporting body and the reinforcing bar of indwelling 7 collectively form the support protection network of disk top plate on stope 9.
Reinforcing bar 7 is retained in each fan-shaped deep hole 4 after presplit blasting, formed presplit blasting face beyond upper disk top plate namely adopt
The advance support body of the fan-shaped distribution of the upper disk top plate of ore deposit 9.When shrinkage mining undercuts and falls ore deposit rock drilling every time, in time along stope
The top plate that total length progressively exposes in disk on row's mounting bar net 6 and the combined supporting stope 9 of anchor pole 5 is moved towards, so that bar net 6 and anchor pole 5
The reinforcing bar 7 being retained in when combined supporting body is with presplit blasting in each fan-shaped deep hole 4 is collectively forming the carrying branch of disk top plate on stope 9
Watch box, it is ensured that the upper disk top plate not inbreak during ore deposit and ore drawing is fallen for the extremely broken stope 9 not destroyed by concussion of blasting.
Claims (8)
1. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation, it is characterised in that in upper disk
When (4) presplit blasting of ore-rock interface deep hole further damages upper disk top plate so as to avoid mining process borehole blasting from shaking, with bundle
Tie up adhesive tape (11) reinforcing bar (7) that explosive cartridge (10) is bundled in slightly larger than deep hole (4) length is implemented into deep hole and do not couple or do not couple
Reinforcing bar (7) is retained in deep hole (4) after spaced loading presplit blasting, presplit blasting, forms the sector point of disk top plate on stope (9)
The advance support body of cloth.
2. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 1,
Characterized in that, when shrinkage mining undercuts and falls ore deposit rock drilling every time, total length across strike is moved towards in row's mounting bar net in stope (9)
(6) the upper disk top plate of stope (9) progressively exposure, i.e. top beyond presplit blasting face and in anchor pole (5) combined supporting mining process
Plate, and the fan-shaped distribution of indwelling reinforcing bar (7), stayed when the combined supporting body that bar net (6) and anchor pole (5) are formed is with presplit blasting
Put the common carrying prop of disk top plate on reinforcing bar (7) the formation stope (9) in deep hole (4), it is ensured that the stope extremely crushed
(9) disk top plate not inbreak during ore deposit and ore drawing is fallen on, so that avoid disk top plate on stope (9) from collapsing and increase the rate of dilution,
Also stope (9) is avoided to be scrapped because collapsing upper disk top plate.
3. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 2,
Characterized in that, being 1.5~3.0m along the array pitch of top plate incline direction bar net (6) supporting.
4. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 2,
Characterized in that, the spacing of anchor pole (5) supporting is 1.0~2.0m.
5. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 2,
Characterized in that, bar net (6) is with 2Round bar spacing 110mm, and between discarded steel bar end or handle iron
Formed every 800~1000mm spot welding, its length is 2~3m.
6. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 1,
Characterized in that, depending on fan-shaped presplitting deep hole (4) arrangement number is according to roof stability and Pre-splitting Blasting Effect, top plate is more broken
When fan-shaped deep hole (4) number for arranging is more, total dose for not coupling in single deep hole (4) or not coupling spaced loading is fewer,
It is more intensive so as to the reinforcing bar (7) of indwelling in more broken top plate so as on the premise of Pre-splitting Blasting Effect is ensured.
7. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 1,
Characterized in that, the number of (1) through connecting taxiway (2) into the fan-shaped deep hole (4) of drilling chamber (3) construction of being gone up a hill from every is 15
~27.
8. the reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation according to claim 1,
Characterized in that, reinforcing bar (7) specification is
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| CN201511025411.7A CN105386766B (en) | 2015-12-31 | 2015-12-31 | The reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation |
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| CN201511025411.7A CN105386766B (en) | 2015-12-31 | 2015-12-31 | The reinforcement presplitting method for protecting support of the extremely broken upper disk top plate of shallow hole shrinkage method exploitation |
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| CN105386766B true CN105386766B (en) | 2017-09-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630119A (en) * | 2018-11-16 | 2019-04-16 | 西北矿冶研究院 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
| CN110173247A (en) * | 2019-05-19 | 2019-08-27 | 中铁十九局集团矿业投资有限公司 | A kind of Roof Control fracturing process of soft broken top plate ore body back production |
| CN110905509B (en) * | 2019-11-07 | 2021-07-23 | 河南金源黄金矿业有限责任公司 | Deep hole shrinkage mining method for thin-vein type steeply inclined ore body |
| CN112502705A (en) * | 2020-11-10 | 2021-03-16 | 西北矿冶研究院 | Anti-collapse supporting method for ultra-broken thin ore shallow hole shrinkage stope |
| CN112780277B (en) * | 2020-12-30 | 2023-01-24 | 六盘水师范学院 | Coal seam floor fault water damage reinforcement prevention and control method |
| CN114856563B (en) * | 2022-06-02 | 2023-04-07 | 紫金矿业集团股份有限公司 | Dead-weight ore-falling mining method for deep-hole pre-cracked ore in downward stage of broken ore rock |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1661422A1 (en) * | 1989-07-05 | 1991-07-07 | В.Л.Дюков и А.П.Волков | Method for working inclined ore obstructions |
| RU2234673C1 (en) * | 2003-03-17 | 2004-08-20 | Институт горного дела Дальневосточного отделения РАН | Method of explosion of ascending wells |
| CN103089267A (en) * | 2013-01-22 | 2013-05-08 | 鞍钢集团矿业公司 | Thin-ore-body shallow hole shrinkage method without sill pillar |
-
2015
- 2015-12-31 CN CN201511025411.7A patent/CN105386766B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1661422A1 (en) * | 1989-07-05 | 1991-07-07 | В.Л.Дюков и А.П.Волков | Method for working inclined ore obstructions |
| RU2234673C1 (en) * | 2003-03-17 | 2004-08-20 | Институт горного дела Дальневосточного отделения РАН | Method of explosion of ascending wells |
| CN103089267A (en) * | 2013-01-22 | 2013-05-08 | 鞍钢集团矿业公司 | Thin-ore-body shallow hole shrinkage method without sill pillar |
Non-Patent Citations (2)
| Title |
|---|
| 复杂金矿床控制爆破技术探讨;胡伟平等;《黄金》;19951031;第16卷(第10期);第13-16页 * |
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Effective date of registration: 20180315 Address after: 471400 Xidian village, old county town, Songxian, Luoyang, Henan Patentee after: Songxian Qian River Mining Co., Ltd. Address before: 710055 Shaanxi province Xi'an Yanta Road No. 13 Patentee before: Xi'an Architectural Sci & Tech. Univ. |