CN102337893B - Method for processing suspension top by medium-deep hole blasting on upper and lower shoes - Google Patents
Method for processing suspension top by medium-deep hole blasting on upper and lower shoes Download PDFInfo
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- CN102337893B CN102337893B CN 201110278615 CN201110278615A CN102337893B CN 102337893 B CN102337893 B CN 102337893B CN 201110278615 CN201110278615 CN 201110278615 CN 201110278615 A CN201110278615 A CN 201110278615A CN 102337893 B CN102337893 B CN 102337893B
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- 238000005422 blasting Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000725 suspension Substances 0.000 title 1
- 238000005553 drilling Methods 0.000 claims abstract description 35
- 239000011435 rock Substances 0.000 claims abstract description 24
- 238000010276 construction Methods 0.000 claims abstract description 20
- 210000003462 vein Anatomy 0.000 claims abstract description 9
- 239000002360 explosive Substances 0.000 claims abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 4
- 239000002893 slag Substances 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 6
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 230000009172 bursting Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000237509 Patinopecten sp. Species 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000020637 scallop Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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Abstract
本发明涉及一种上下帮中深孔爆破处理悬顶的方法，在电铲出矿巷道的巷道上帮和巷道下帮同时垂直穿脉掘进两条的凿岩联巷，此凿岩联巷穿过矿脉后，再朝悬顶部位方向与电铲出矿巷道平行掘进两条，且与所述凿岩联巷垂直连接的中深孔凿岩巷道，且此中深孔凿岩巷道掘进超过悬顶部位，然后在此两凿岩巷道中分别向悬顶部位按排距1-1.5米、孔底距1-1.5米的落矿参数进行中深孔施工，每排穿孔，用装药器向中深孔内装炸药，用毫秒导爆管微差爆破，一次爆破将悬顶崩落。其优点是：利用电铲进行出渣作业，劳动强度小，施工效率高；不在空区顶部作业，保证了作业的绝对安全。
The invention relates to a method for treating a suspended roof by medium and deep hole blasting on the upper and lower sides. Two rock-drilling lanes are drilled vertically through the veins at the same time on the upper side of the roadway and the lower side of the roadway when the electric shovel is out of the mine. After passing through the ore vein, two medium and deep hole rock drilling roadways are excavated in parallel with the electric shovel exiting roadway in the direction of the overhanging top position, and are vertically connected with the rock drilling joint roadway, and the deep hole rock drilling roadway is excavated more than the overhang The top position, and then carry out medium and deep hole construction to the suspended top position in the two rock drilling roadways according to the parameters of row spacing 1-1.5 meters and hole bottom distance 1-1.5 meters. Explosives are installed in the middle and deep holes, and the millisecond detonator is used for micro-differential blasting, and the suspended roof will collapse in one blast. Its advantages are: using electric shovel for slag removal operation, low labor intensity and high construction efficiency; it does not work on the top of the empty area, which ensures the absolute safety of the operation.
Description
Technical field
The invention belongs to the mining technique field, relate in particular to a kind of method of helping medium-length hole blasting to handle outstanding top up and down.
Background technology
At present the main mining methods of high-dipping ore block are sublevel caving method without sill pillar, and this mining methods are to tunnel mining tunnel in ore body, in the utilization to the scallop hole explosion method that the ore deposit digs up mine that falls.But this mining methods are sometimes because drawing is inaccurate, or construction location is inaccurate, cause that hole depth design is not in place, the position is not got in the hole, or powder charge does not install to the position, causes demolition effect bad, and the top is not put down, Here it is outstanding top.Behind the outstanding top, not only influence output, and if handle and ought just become potential safety hazard, in case get off, just very dangerous.Original outstanding top processing method is to help or help down gallery of pick on forklift ore removal tunnel, upwards dig a courtyard again, after arriving outstanding top bit, driving chamber master lane, driving carries out Chamber Construction after finishing in the entity of outstanding top, as shown in Figure 1, the operation of need manually slagging tap, the excavation work amount is very big, and labour intensity is big, long in time limit, and the workman constructs abnormally dangerous in the entity of outstanding top.The loss of mineral resources is not only caused on outstanding top, mining cost is strengthened, the more important thing is and stay potential safety hazard, directly threaten cutter's life security, therefore, no matter the actual needs from producing is still considered from security standpoint, outstanding top all must be well solved, and 1 is that outstanding top bit, 2 is that chamber master lane, 3 is that courtyard, 4 is forklift ore removal tunnel among Fig. 1.
Summary of the invention
The object of the present invention is to provide a kind of efficiency of construction that improves, reduce labour intensity, guarantee the double entry road of job safety, help medium-length hole blasting to handle the method on outstanding top up and down.
The objective of the invention is to realize by following technical proposals:
The method of helping medium-length hole blasting to handle outstanding top up and down of the present invention, it is characterized in that: it is characterized in that: vertical rock drilling of wearing two of arteries and veins drivings joins the lane when helping under the tunnel in power shovel ore removal tunnel group and tunnel, after mineral ore is passed in this rock drilling connection lane, again towards outstanding top bit direction and two of the parallel drivings in power shovel ore removal tunnel, and with described rock drilling connection long and medium hole drilling connected vertically tunnel, lane, and this long and medium hole drilling tunnelling surpasses outstanding top bit, in this two drilling drift, press array pitch 1-1.5 rice to outstanding top bit respectively then, carry out the medium-length hole construction apart from the ore deposit parameter that falls of 1-1.5 rice at the bottom of the hole, every row's perforation, with explosive loader blasting charge in the medium-length hole, with the short-delay blasting of millisecond detonator, onepull will be hanged the top avalanche.
Advantage of the present invention is: utilize this said method to handle outstanding top technology, level is carried out lane construction in the ore removal tunnel, driving, medium-length hole construction, bursting work are all a level, need not upwards construct, construction organization is simple, utilize the power shovel operation of slagging tap, labour intensity is little, the efficiency of construction height; Maximum benefit is not at the dead zone operation at top, has guaranteed being perfectly safe of operation.
Description of drawings
Fig. 1 is the structural representation of original outstanding top processing method.
Fig. 2 is the structural representation of the outstanding top of the present invention processing method.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the A-A sectional view of Fig. 2.
The specific embodiment
Below in conjunction with description of drawings the specific embodiment of the present invention.
As Fig. 2, Fig. 3, shown in Figure 4: the method for helping medium-length hole blasting to handle outstanding top up and down of the present invention, it is characterized in that: vertical rock drilling of wearing two of arteries and veins drivings joins the lane when helping under the tunnel in power shovel ore removal tunnel group and tunnel, after mineral ore is passed in this rock drilling connection lane, again towards outstanding top bit direction and two of the parallel drivings in power shovel ore removal tunnel, and with described rock drilling connection long and medium hole drilling connected vertically tunnel, lane, and this long and medium hole drilling tunnelling surpasses outstanding top bit, in this two drilling drift, press array pitch 1-1.5 rice to outstanding top bit respectively then, carry out the medium-length hole construction apart from the ore deposit parameter that falls of 1-1.5 rice at the bottom of the hole, every row's perforation is used
Explosive loader blasting charge in the medium-length hole, with the short-delay blasting of millisecond detonator, onepull will be hanged the top avalanche.
The present invention is in the vertical rock drilling connection lanes 6 of wearing two 3m * 3m of arteries and veins driving with 10 whiles of group under the tunnel of the tunnel in described power shovel ore removal tunnel 4 group 9, after 6 meters of mineral ores are passed in this rock drilling connection lane 6, again towards two 3m * 3m of outstanding top bit 1 direction and power shovel ore removal tunnel 4 parallel drivings, and with described rock drilling connection 6 long and medium hole drilling connected vertically tunnels 5, lane, these long and medium hole drilling tunnel 5 drivings surpass outstanding top bit 2-3m, leave enough spaces like this, guarantee medium-length hole all outstanding top bit of can constructing.In this two drilling drift 5, carry out medium-length hole 12 constructions apart from 1 meter the ore deposit parameter that falls to outstanding top bit 1 at the bottom of by 1 meter of array pitch, hole respectively then, every row makes a call to 4 holes, row's number of construction medium-length hole 12 is determined by outstanding top bit length, with BQF100 type explosive loader blasting charge in the medium-length hole, with I section, III section, V section, VII section 18m millisecond detonator line, as shown in Figure 4, the I section is detonated earlier, be III section, V section successively, be that the VII section is detonated at last, like this, towards the Xuan Ding scope of freedom 13 directions, but not the covering of the fan direction is carried out short-delay blasting by row, and onepull will be hanged the top avalanche.
Number in the figure 7 is that armor rock on the ore body, 8 is that ore body boundary line, 11 is ore body lower wall country rock.The present invention carries out lane construction in ore removal tunnel level, and driving, medium-length hole construction, bursting work all a level, need not upwards be constructed, and construction is simple, utilizes the power shovel operation of slagging tap, and labour intensity is little, the efficiency of construction height; Maximum benefit is not at the dead zone operation at top, and this safety in production hidden danger of outstanding top is eliminated substantially.
Handle the scheme of outstanding top problem with the prior art medium-length hole and compare, this scheme is to help two drilling drifts of new pick up and down, carrying out double treatment, and maneuverability is arranged in the tunnel, does not disturb mutually, has a style of one's own.If carry out the single face explosion in segmentation lower wall connection lane, not only the rock drilling hole depth is big, easy sideslip, and precision is difficult to control, and treatment effect is undesirable.And charge explosion destroy easily the connection lane, to thousand one-tenth influences of subsequent production.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110278615 CN102337893B (en) | 2011-09-20 | 2011-09-20 | Method for processing suspension top by medium-deep hole blasting on upper and lower shoes |
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| CN 201110278615 CN102337893B (en) | 2011-09-20 | 2011-09-20 | Method for processing suspension top by medium-deep hole blasting on upper and lower shoes |
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| CN102337893A CN102337893A (en) | 2012-02-01 |
| CN102337893B true CN102337893B (en) | 2013-07-10 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808622B (en) * | 2012-08-03 | 2014-08-20 | 西北矿冶研究院 | Method for recovering ore pillar by medium-length hole and deep hole combined blasting technology |
| CN109029168B (en) * | 2018-08-20 | 2020-11-03 | 河北钢铁集团矿业有限公司 | Blasting treatment method for underground suspended roof |
| CN109974545B (en) * | 2019-04-04 | 2020-05-19 | 中南大学 | A method for the treatment of suspended ceilings in medium-deep hole blasting in a segmented caving method |
| CN111578797B (en) * | 2020-07-06 | 2022-05-31 | 酒泉钢铁(集团)有限责任公司 | A kind of underground medium and deep hole blasting suspension ceiling treatment method |
| CN112857162A (en) * | 2020-12-31 | 2021-05-28 | 中国华冶科工集团有限公司 | Mine blast hole time-delay blasting method |
| CN113605895B (en) * | 2021-09-15 | 2022-11-04 | 长沙矿山研究院有限责任公司 | A Safe and Efficient Mining Method for Segmented Medium and Deep Hole Stope |
| CN114922622A (en) * | 2022-05-30 | 2022-08-19 | 玉溪大红山矿业有限公司 | Method for efficiently treating suspended roof of stope adopting non-sill pillar sublevel caving method |
| CN115682855A (en) * | 2022-11-14 | 2023-02-03 | 湖南柿竹园有色金属有限责任公司 | A method for treating suspended arches by directional pre-piercing energy-concentrating blasting |
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| US4272128A (en) * | 1980-01-30 | 1981-06-09 | Jacoby Charles H | Method of creating a safe environment in salt mining |
| US5139312A (en) * | 1991-04-09 | 1992-08-18 | Jackson Daryl L | Method and apparatus removing a mineable product from an underground seam |
| CN100535387C (en) * | 2005-05-23 | 2009-09-02 | 东北大学 | Improved sublevel caving method without bottom column |
| CN1730904A (en) * | 2005-09-08 | 2006-02-08 | 东北大学 | An Induced Caving Method for Dealing with Gobs |
| CN101328809B (en) * | 2008-06-25 | 2010-12-15 | 深圳市中金岭南有色金属股份有限公司凡口铅锌矿 | Non-bottom pillar deep hole falling-back type mining method |
| CN101403304A (en) * | 2008-10-30 | 2009-04-08 | 昆明理工大学 | Large dead zone residual ore recovery method |
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Address after: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee after: Anshan Iron and Steel Group Mining Co., Ltd. Address before: 114001 Anshan District, Liaoning, No. 219 Road, No. 39, Tiedong Patentee before: Angang Group Mine Company |