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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Abstract
The invention relates to a method for processing suspension top by medium-deep hole blasting on upper and lower shoes, comprising the steps of: simultaneously tunneling two drilling connection tunnels, on a tunnel upper shoe and a tunnel lower shoe of an electric shovel discharging tunnel, perpendicularly passing through a mineral vein; after the drilling connection tunnels pass through the mineral vein, tunneling two medium-deep hole drilling tunnels which is in parallel with the electric shovel discharging tunnel, faces towards the direction of the suspension top part, and is perpendicularly connected with the drilling connection tunnel, wherein the medium-deep hole drilling tunnels are tunneled exceed the suspension top part; performing construction of medium-deep holes in the two drilling tunnels towards the suspension top part according to the data for ore bring-down through blasting, such as row distance of 1-1.5m and hole bottom distance of 1-1.5m; drilling holes in each row; loading explosive in the medium-deep holes by a explosive loading machine; performing millisecond blasting by a millisecond detonator; and thereby breaking the suspension top by one-time blasting. The method for processing suspension top by medium-deep hole blasting on upper and lower shoes has the advantages that the deslagging is performed by the electric shovel, so that the labor intensity is small and the construction efficiency is high; operation is not performed on the tops of gobs so that the operation is ensured to be absolutely safe.
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.
Claims (2)
1. help medium-length hole blasting to handle outstanding method of pushing up up and down for one kind, 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.
2. the medium-length hole blasting of helping up and down according to claim 1 is handled outstanding method of pushing up, vertical rock drilling of wearing two 3m * 3m of arteries and veins driving joins the lane when helping under the tunnel in described power shovel ore removal tunnel group and tunnel, after 6 meters of mineral ores are passed in this rock drilling connection lane, again towards outstanding top bit direction and two 3m * 3m of the parallel driving in power shovel ore removal tunnel and 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 2-3m, in this two drilling drift, press 1 meter of array pitch to outstanding top bit respectively then, carry out the medium-length hole construction apart from 1 meter the ore deposit parameter that falls at the bottom of the hole, every row makes a call to 4 holes, row's number of construction medium-length hole is determined by outstanding top bit length, with explosive loader blasting charge in the medium-length hole, use the I section, the III section, the V section, VII section 18m millisecond detonator line, the I section is detonated earlier, be the III section successively, the V section, be that the VII section is detonated at last, carry out short-delay blasting by row towards Xuan Ding scope of freedom direction, onepull will be hanged the top avalanche.
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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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| CN102337893B true CN102337893B (en) | 2013-07-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 | Medium-length hole blasting suspended roof processing method in sublevel caving method |
| CN111578797B (en) * | 2020-07-06 | 2022-05-31 | 酒泉钢铁(集团)有限责任公司 | Underground medium-length hole blasting suspended roof processing 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 | Safe and efficient mining method for sectional medium-length hole stope |
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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 | Induction caving method for disposing goaf |
| 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 |