CN205036375U - Fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing - Google Patents
Fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing Download PDFInfo
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- CN205036375U CN205036375U CN201520756265.4U CN201520756265U CN205036375U CN 205036375 U CN205036375 U CN 205036375U CN 201520756265 U CN201520756265 U CN 201520756265U CN 205036375 U CN205036375 U CN 205036375U
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- back production
- length hole
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- cutting groove
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Abstract
The utility model discloses a fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing relates to ore body hanging arch processing technique, and its structure mainly includes cuts cut groove, back production rock drilling lane and back production medium -length hole, it forms the hanging arch to cut the cut groove top, set up a plurality of rows of back production medium -length holes in the ore body of back production rock drilling lane top, the next -door neighbour the back production medium -length hole of cutting the cut groove lateral part is fan -shaped back production medium -length hole, and this fan -shaped back production medium -length hole distance the distance of cutting cut groove, closely spaced than all the other back production medium -length holes. The utility model discloses do not need to do below the hanging arch support, personnel also need not get into dead zone driling explosion to the support, have not only guaranteed personnel's personal safety, have still reduced workman's intensity of labour, have improved work efficiency.
Description
Technical field
The utility model relates to outstanding top, mine treatment technology, utilizes process cutting groove to hang the fan-shaped actual mining medium-length hole on top specifically.
Background technology
Kerve also calls off cutting groove, and the digging quality of cutting groove is directly connected to, and scope of freedom during ore caving forms the size of mine loss and dilution.Kerve is carried out mainly through shallow bore hole kerve method, horizontal deep hole kerve method, these three kinds of methods of vertical long hole kerve method.The mining methods of cutting groove are needed to mainly contain: sub-level primary stoping, block chambering method, sublevel caving method.These mining methods production ores, the precondition that can carry out smoothly is exactly the smooth kerve of cutting groove, once occur that in kerve process outstanding top fault will have a strong impact on the carrying out of subsequent handling.
When kerf blasting, if demolition effect is bad, the situation of appearance has three kinds of situations (as shown in Figure 2) substantially, all belongs to avalanche incomplete, is generally called on " outstanding top ".Wherein the probability of first two appearance is comparatively large, the less appearance of the third situation.
After there is outstanding top situation in kerve, if do not carry out process continue explosion cannot by expection requirement formation cutting groove, and situation can become even worse, now carry out again intractability more greatly, more dangerous.General processing method is, personnel enter in the explosion dead zone of below, outstanding top, utilizes pusher leg drill to fall by shallow bore hole the method in ore deposit, the rock mass of non-avalanche cuts a hole medium-length hole, and then carries out charge explosion.The method is only suitable in outstanding heights of roofs lower, uses when top board is safer.But see according to actual count result, occur that outstanding top is at higher top mostly, generally at the height of distance more than base plate 6m, need to use the instruments such as ladder to take so temporarily and do support, and then enter on dead zone to support and go to carry out rock drilling operation.Not only labour intensity is large for this, and falling from high altitude, top float stone drop to hurt sb.'s feelings etc. and all likely occur, poor stability.If the outstanding larger single treatment of top thickness degree is not complete, need repeatedly to process, the normal production work of the lower impact of efficiency.
Summary of the invention
The weak point that the utility model develops for current needs and prior art, provides a kind of and safely processes the fan-shaped actual mining medium-length hole that cutting groove hangs top.
Process cutting groove described in the utility model hangs the fan-shaped actual mining medium-length hole on top, the technical scheme solving the problems of the technologies described above employing is as follows: described process cutting groove hangs the fan-shaped actual mining medium-length hole on top, its structure mainly comprises cutting groove, back production rock drilling lane and back production medium-length hole, outstanding top is formed above described cutting groove, in ore body above described back production rock drilling lane, some flowing back to is set and adopts medium-length hole, the back production medium-length hole being close to described cutting groove sidepiece is fan-shaped actual mining medium-length hole, and this fan-shaped actual mining medium-length hole is apart from the distance of described cutting groove, less than the spacing of all the other back production medium-length holes.
Preferably, described back production rock drilling lane is vertical with cutting groove to be arranged, described back production medium-length hole and cutting groove place plane parallel.
Preferably, the fan-shaped actual mining medium-length hole distance cutting groove being close to described cutting groove is 0.8m, and the spacing of all the other back production medium-length holes is 1.3m.
Process cutting groove described in the utility model hangs the fan-shaped actual mining medium-length hole on top, the beneficial effect compared with prior art had is: after the utility model solves in cutting groove forming process and occurs outstanding top, affect carrying out smoothly of follow-up kerve and back production bursting work, hinder a normal difficult problem of producing; Use the outstanding top of the utility model process higher position, need not do support below outstanding top, personnel also need not enter driling explosion on dead zone to support, not only ensure that the personal safety of personnel, also reduce the labour intensity of workman, improve operating efficiency; The method has that process outstanding top efficiency is high, safety good, workable, high treating effect.
Accompanying drawing explanation
Accompanying drawing 1 is the schematic diagram that described process cutting groove hangs the fan-shaped actual mining medium-length hole on top;
Accompanying drawing 2 is the explosion schematic diagram that described process cutting groove hangs the fan-shaped actual mining medium-length hole on top;
Description of reference numerals: 1, cutting groove; 2, back production medium-length hole; 3, back production rock drilling lane.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with specific embodiment, and with reference to accompanying drawing, fan-shaped actual mining medium-length hole process cutting groove described in the utility model being hanged to top further describes.
Process cutting groove described in the utility model hangs the fan-shaped actual mining medium-length hole on top, outstanding top is formed when kerve, certain compensation space and the scope of freedom is formed after part avalanche, the utility model makes full use of compensation space and the scope of freedom of formation, process for convenience of when there is outstanding top, by the back production medium-length hole encryption construction of next-door neighbour's cutting groove, the array pitch of original fan-shaped actual mining medium-length hole is shortened, realizes utilizing fan-shaped actual mining medium-length hole process cutting groove to hang the object on top.
Embodiment:
The fan-shaped actual mining medium-length hole that cutting groove hangs top is processed described in the present embodiment, its structure mainly comprises cutting groove, back production rock drilling lane and back production medium-length hole, outstanding top is formed above described cutting groove, in ore body above described back production rock drilling lane, some flowing back to is set and adopts medium-length hole, (row or two rows) the back production medium-length hole being close to described cutting groove sidepiece is fan-shaped actual mining medium-length hole, and this fan-shaped actual mining medium-length hole is apart from the distance of described cutting groove, less than the spacing between all the other back production medium-length holes.By fan-shaped actual mining medium-length hole described in the present embodiment, make full use of compensation space and the scope of freedom that kerf blasting formed, by being close to the fan-shaped actual mining medium-length hole of cutting groove side, then controlling the firing order of fan-shaped actual mining medium-length hole, reaching the object that Cut blasting groove hangs top.
Accompanying drawing 1 hangs the schematic diagram of the fan-shaped actual mining medium-length hole on top for processing cutting groove described in the present embodiment, as shown in Figure 1, outstanding top is there is above described cutting groove 1, described back production rock drilling lane 2 is vertical with cutting groove 1 to be arranged, and in ore body, parallel and described cutting groove 1 is provided with some flowing back to and adopts medium-length hole 3(back production medium-length hole and cutting groove place plane parallel); Described cutting groove 1 both sides next-door neighbour's two flows back to and adopts medium-length hole is fan-shaped actual mining medium-length hole, two of next-door neighbour cutting groove both sides flow back to adopts medium-length hole encryption construction, this two rows fan-shaped actual mining medium-length hole distance cutting groove 1 is 0.8m, and the distance between all the other back production medium-length holes is 1.3m.
Adopt described in the present embodiment and process the fan-shaped actual mining medium-length hole that cutting groove hangs top, carefully prospecting cutting groove is needed to hang the scene on top, record the position on outstanding top, size and general form information, by the position on outstanding top, size and general form information, be reflected on back production medium length blasting design drawing, mutual alignment relation between clearly outstanding top and back production medium-length hole, determines the fan-shaped actual mining medium-length hole processing the required explosion in outstanding top.And utilizing elementary errors Nonel detonator, the section of reasonable distribution Nonel detonator is other, controls the firing order of fan-shaped actual mining medium-length hole.
When adopting fan-shaped actual mining medium-length hole described in the present embodiment, first detonate and have the medium-length hole on enough scope of freedoms, for adjacent rear quick-fried medium-length hole provides the new scope of freedom after this medium-length hole blasting, make adjacent medium-length hole when Xuan Ding direction is available without the scope of freedom, explosion is carried out with the scope of freedom newly formed, follow-up medium-length hole successively with the new scope of freedom of the quick-fried rear formation of last medium-length hole for blasting direction, explosion one by one, side and the ore body on explosion rear overhang top disconnect; As shown in Figure 2, form outstanding top above described cutting groove 1, in described back production rock drilling lane 2, back production medium-length hole is set, when carrying out the outstanding top of process cutting groove, two row's fan-shaped actual mining medium-length holes of explosion next-door neighbour cutting groove, and the blasting sequence of fan-shaped actual mining medium-length hole is a, b, c, d, e.
For the outstanding top process of Z3609 mineral building, use fan-shaped actual mining medium-length hole described in the present embodiment, if repeatedly explosion kerve, the explosive payload in medium-length hole will be controlled according to outstanding heights of roofs, avoid because excessive powder charge causes untapped medium-length hole to be below destroyed.Such as, when process Z3609 mineral building hangs top, in fig 2, in a, b, c, d, e medium-length hole of fan-shaped actual mining medium-length hole, loaded length is 4m, 4m, 6m, 7m, 8m successively.
Described in use the present embodiment, process the fan-shaped actual mining medium-length hole that cutting groove hangs top, as required, same fan-shaped actual mining medium-length hole can be set at the offside on outstanding top.During kerf blasting, inside, outstanding top is damaged, and in ore body, this just exists crack simultaneously, therefore when fan-shaped actual mining medium-length hole blasting shakes, and the just most of slump under the effect of deadweight of outstanding top portion.By adopting the utility model, can form follow-up cutting kerve or the scope of freedom needed for back production explosion, the back production ore deposit that falls just can normally have been carried out.
Above-mentioned detailed description of the invention is only concrete case of the present utility model; scope of patent protection of the present utility model includes but not limited to above-mentioned detailed description of the invention; any meet claims of the present utility model and any person of an ordinary skill in the technical field to its suitable change done or replacement, all should fall into scope of patent protection of the present utility model.
Claims (3)
1. process the fan-shaped actual mining medium-length hole that cutting groove hangs top, it is characterized in that, its structure mainly comprises cutting groove, back production rock drilling lane and back production medium-length hole, outstanding top is formed above described cutting groove, in ore body above described back production rock drilling lane, some flowing back to is set and adopts medium-length hole, the back production medium-length hole being close to described cutting groove sidepiece is fan-shaped actual mining medium-length hole, and this fan-shaped actual mining medium-length hole is apart from the distance of described cutting groove, less than the spacing of all the other back production medium-length holes.
2. process the fan-shaped actual mining medium-length hole that cutting groove hangs top according to claim 1, it is characterized in that, described back production rock drilling lane is vertical with cutting groove to be arranged, described back production medium-length hole and cutting groove place plane parallel.
3. process the fan-shaped actual mining medium-length hole that cutting groove hangs top according to claim 2, it is characterized in that, the fan-shaped actual mining medium-length hole distance cutting groove being close to described cutting groove is 0.8m, and the spacing between all the other back production medium-length holes is 1.3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756265.4U CN205036375U (en) | 2015-09-28 | 2015-09-28 | Fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520756265.4U CN205036375U (en) | 2015-09-28 | 2015-09-28 | Fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing |
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| Publication Number | Publication Date |
|---|---|
| CN205036375U true CN205036375U (en) | 2016-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520756265.4U Expired - Fee Related CN205036375U (en) | 2015-09-28 | 2015-09-28 | Fan -shaped back production medium -length hole of cut groove hanging arch is cut in processing |
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| CN (1) | CN205036375U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804749A (en) * | 2016-04-29 | 2016-07-27 | 中南大学 | Method for drilling upward fan-shaped medium-length holes in double movements of tunneling drill jambo |
| CN109029168A (en) * | 2018-08-20 | 2018-12-18 | 河北钢铁集团矿业有限公司 | A kind of blast processing method on the outstanding top in underground |
| CN109322668A (en) * | 2018-10-16 | 2019-02-12 | 长沙矿山研究院有限责任公司 | Kerve method in high-dipping and pole unstable ore body |
-
2015
- 2015-09-28 CN CN201520756265.4U patent/CN205036375U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804749A (en) * | 2016-04-29 | 2016-07-27 | 中南大学 | Method for drilling upward fan-shaped medium-length holes in double movements of tunneling drill jambo |
| CN109029168A (en) * | 2018-08-20 | 2018-12-18 | 河北钢铁集团矿业有限公司 | A kind of blast processing method on the outstanding top in underground |
| CN109322668A (en) * | 2018-10-16 | 2019-02-12 | 长沙矿山研究院有限责任公司 | Kerve method in high-dipping and pole unstable ore body |
| CN109322668B (en) * | 2018-10-16 | 2020-08-25 | 长沙矿山研究院有限责任公司 | Method for drawing groove in steeply inclined and extremely unstable ore body |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160217 Termination date: 20160928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |