CN1538138A - Device for protecting reserved area in uast hole and its use method - Google Patents
Device for protecting reserved area in uast hole and its use method Download PDFInfo
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- CN1538138A CN1538138A CNA031322840A CN03132284A CN1538138A CN 1538138 A CN1538138 A CN 1538138A CN A031322840 A CNA031322840 A CN A031322840A CN 03132284 A CN03132284 A CN 03132284A CN 1538138 A CN1538138 A CN 1538138A
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- bed course
- reserved area
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- gun hole
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Abstract
An equipment for protecting the reserved area in the blast hole is a liner pad pasted on the inner surface of blast hole is such manner that its opening direction is the blasting direction. Its application method includes such steps as providing blasting object, determining the position and shape of the blast hole, drilling, determining the material used to make said liner pad, making the liner pad, pasting it on said reserved area, charging explosive, and detonating.
Description
Technical field
The present invention relates to a kind of blasting gear and using method thereof, particularly a kind of device and using method thereof that is used to protect the explosion reserved area.
Background technology
At present, in blasting technique, adopt photoface exploision usually, Pre-splitting Blasting Technique, these two kinds of technology can play the certain protection effect to the non-explosion face that big gun hole inwall belongs to the reserved area, but because explosive is when filling, between the non-explosion face that explosive contacts with the reserved area, do not take any safeguard measure, thereby still can produce destruction to the non-explosion face of reserved area around the big gun hole even to whole reserved area behind the explosive charge, make the non-explosion face in non-explosion face of big gun hole inwall and the big gun hole outside all produce damage largely, and energy can not fully be used for shot rock, comparatively waste; On the other hand, after the explosion damage takes place, need take a series of repairing measures, increase cost this damage.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, and the device and the using method thereof that provide a kind of and can protect the non-explosion face of big gun hole inwall, make full use of explosion energy, save the protection explosion reserved area of wound repair expense.
Purpose of the present invention realizes through following scheme.
The device of protection explosion reserved area, its main points are that it is a kind of bed course that pastes at the reserved area wall of big gun hole inwall, the corresponding blasting direction of the opening direction of bed course.
The material of bed course selects to need to satisfy the purpose of the non-shot rock of protection, and it should be all stronger material of intensity, density.
And the shape of bed course is by the decision of the shape of reserved area wall, for example hole firing, the big gun hole be shaped as tubular, if blasting direction is a sidewall of barrel, then bed course is covered on another sidewall, is one square after the auxilliary exhibition of this bed course.For example square again chamber (having six sides) explosion, if blasting direction is a side of chamber, then bed course can be made the shape of all the other five sides.
The corresponding blasting direction of the opening direction of bed course, purpose is in order to concentrate on more among a small circle according to blasting direction in the explosion time energy-flux density.Certainly if the direction of controlled blasting more fine and the formation of crackle then need the more aperture arrangement of specific definition bed course.
Like this; if the desire explosion object in the big gun hole is divided into excavation area and reserved area; then the wall (claiming non-explosion face) that contacts with explosive of reserved area is subjected to the destruction of explosive easily; thereby between explosive and non-explosion face, be provided for protecting the isolation bed course of reserved area; this bed course is when explosive charge; can control the distribution of detonation stresses field; the detonation product of high-energy-density is impacted on bed course; but not impact in the reserved area non-explosion face; thereby bed course itself has hindered the direct effect of detonation gas to the non-blast area of inwall, big gun hole (reserved area); especially " infiltration " and " wedging " effect; obviously weaken the active force of detonation pressure, thereby reach the purpose of protection big gun non-explosion face of hole inwall and whole reserved area reserved area, big gun hole inwall.
Because bed course can be arranged to certain thickness and intensity, so the explosion that is provided with bed course not only forms uneven stress distribution in instant of detonation around the big gun hole wall, and shows tangible Mohaupt effect.This be because, detonation product directly impacts in mat surface, and the density of bed course is greater than the density of product on the detonation wave wave surface, so, detonation product comes and the generation reflected shock wave from this return reflection surface, and this energy is used for the explosion of blast area, and therefore made full use of energy, avoided the loss of energy; Explosive is more less than the comparative resistance of non-blast area at the comparative resistance of blast area simultaneously, thereby detonation energy concentrated and expansion to the blast area, makes that energy can be fully in order to explosion.
Simultaneously, because the protection of bed course to non-explosion face arranged, thereby the damage of non-explosion face is very little even not damage, thereby has saved the expense of wound repair, and then has reduced cost and time.
If explosion momentum density then in the rock generation micro rupture district at this place, has formed the incipient crack greater than by the critical momentum density of blasting medium; Simultaneously, big gun hole inwall medium forms stress relaxation, and has suppressed the formation of (except that blasting direction) crackle on other direction to a certain extent, thereby can control local crushing of big gun hole inwall and the generation of initial crack at random.
According to this principle, the present invention also is
Also have a kind of blast guide surface in the bed course, this blast guide surface is parallel to the interface of reserved area and excavation area.
Herein bed course blast guide surface refers to the face that distributes along blasting direction after the auxilliary exhibition of bed course.The face (non-explosion face) that the interface of reserved area and excavation area needs protection when generally all being explosion; must guarantee the integrality on its plane as far as possible; thereby the principle that forms according to above-mentioned incipient crack; make bed course blast guide surface be parallel to the interface of reserved area and excavation area; explosion time then; explosive is gone out from bed course blast guide surface guiding; the explosion momentum density of excavation area is greater than the critical momentum density at excavation area and reserved area interface place at this moment; thereby can produce the incipient crack herein; and, form directional fracture by the effect of explosive cumulative action increasing to the incipient crack.Like this, the efficient of raising explosion reaches the protection to non-explosion face.
Also be
When if explosion is hole firing,
The blast guide surface of bed course is the side of bed course.
Usually hole firing is a contact demolition, and the volume of its borehole is less, and the blast impulse force of explosive is also less, and the effect of good guiding explosion momentum just can be played in the side (surface area is less relatively) of employing bed course as the blast guide surface.
When if explosion is chamber blasting,
The blast guide surface of bed course is the madial wall of bed course.
Usually chamber blasting is a non-contact demolition, and the volume of its chamber is bigger, adopt the madial wall (face relative with explosive) of bed course, or the part of madial wall is better to the guiding effect of explosion impulse as the explosion guide surface.
Above-mentioned two kinds of cushion layer structures make detonation gas along the determined direction plane diffusion of blast guide surface, suppressed the generation and the development of the random crack except that blasting direction, thereby non-shot rock are avoided damage outside having guaranteed the big gun hole.
The present invention also is
Bed course or be made of metal, or make by pottery, or be made of plastics, or make by rubber, or make by the composite that above-mentioned four kinds of any combination thereof form.
At the effective object of varying strength density, be metal during according to explosion, or be pottery, or be plastics, or be rubber and select the material of making bed course; Certainly can also select the bed course made by the composite of metal, pottery, plastics, these four kinds of any combination thereof of rubber according to actual needs.
This metal is concrete or be iron or for copper or for steel or for aluminium alloy or be titanium alloy.
This pottery is concrete or be corundum, or is boron carbide, or is carborundum.
Corundum, boron carbide or carborundum are the stronger material of intensity density in the pottery.
The present invention further also is
The thickness of bed course is 0.1mm～10mm.
The thickness of bed course is decided on detonation energy, determines that intuitively what of explosive are key element be, and according to inventor's experience, the thickness that makes bed course is the protective effect that 0.1mm～10mm can guarantee bed course, and can guarantee the cost performance of the best.
Wherein, the thickness with bed course is that 1mm～3mm is the best.
The plural pieces bed course is covered on the reserved area wall of big gun hole inwall.
If the explosion object is the individuality that central distribution pluralizes with the big gun hole, perhaps the area in big gun hole greatly too, the reserved area wall that then needs to adopt the plural pieces bed course to be covered on big gun hole inwall could satisfy the explosion demand.
Purpose of the present invention can also realize through following scheme.
The using method of the device of protection explosion reserved area, its main points are that it comprises the steps:
1, provide a kind of explosion object,
2, determine the position and the shape in big gun hole at the explosion object, bore the big gun hole,
3, provide a kind of bed course,
(1) select the material of bed course at the material character of explosion object,
(2) determine the shape of bed course according to the position of big gun hole shape and reserved area,
(3) preparation bed course,
4, bed course is pasted reserved area wall at big gun hole inwall, the corresponding blasting direction of the opening direction of bed course,
5, filling explosive and detonating in the big gun hole.
The present invention is in conventional explosion program: the reserved area wall of determining explosion object → selection big gun hole → brill big gun hole → filling explosive → increased in detonating in the big gun hole pastes bed course; to be used to protect reserved area wall (non-explosion face); make full use of explosion energy and save the wound repair expense, in detail as mentioned before.
In sum, the present invention has following advantage compared to prior art: the protective effect of reserved area wall during to explosion by bed course provided by the invention, detonation product is impacted in mat surface, thereby reserved area wall and whole reserved area can not be subjected to the destruction of explosive; Bed course also plays guiding function to detonation energy simultaneously, and the explosion energy that explosive is produced is used for the explosion to the blast area more concentratedly, and the cumulative effect is obvious; And because the protection of bed course to non-explosion face arranged, thereby the damage of non-explosion face is very little even not damage, thereby has saved the expense of wound repair, and then has reduced cost and time.And using method is convenient easy to operate.
Description of drawings
Fig. 1 is the explosion structural representation of the embodiment of the invention 1.
Fig. 2 is the explosion structural representation of the embodiment of the invention 2.
Fig. 3 is the explosion structural representation of the embodiment of the invention 3.
Fig. 4 is the explosion chamber sectional structure schematic diagram of the embodiment of the invention 4.
Fig. 5 be Fig. 4 A to view.
Fig. 6 is the explosion chamber sectional structure schematic diagram of most preferred embodiment of the present invention.
The specific embodiment
Embodiment 1:
The device of protection explosion reserved area as shown in Figure 1, it is a kind of bed course 3 that pastes at the reserved area of big gun hole 1 inwall 2 walls 21, the corresponding blasting direction M of the opening direction of bed course 3.Big gun hole 1 is specially a kind of borehole, and explosive 5 is distributed in the central authorities in big gun hole.
Its using method comprises the steps:
1, provide a cubic meter of stone,
2, determining the position in big gun hole 1 and make it at the cubic meter of stone is tubular, with boring machine drill big gun hole 1,
3, provide a kind of bed course 3,
(1) selecting the material of bed course at the material character of the cubic meter of stone is plastics,
(2) be tubular according to big gun hole 1, and the position of reserved area 2 is for big gun hole 1 being the cubic meter of stone one half side at center, then bed course 3 is half round tube wall, and its thickness is 1mm,
(3) suppress a slice bed course 3 with plastic material according to above-mentioned shape,
4, bed course 3 is pasted at the reserved area of big gun hole 1 inwall 2 walls, the corresponding blasting direction of the opening direction of bed course 3,
5, in the big gun hole, load explosive, and fill filler, detonate then.
Embodiment 2:
The device of protection explosion reserved area as shown in Figure 2; it is a kind of bed course 3 that pastes at the reserved area of big gun hole 1 inwall 2 walls 21; the corresponding blasting direction M of the opening direction of bed course 3; big gun hole 1 is specially a kind of borehole; also has a kind of blast guide surface 31 in the bed course 3; this blast guide surface 31 is parallel to the interface 41 of reserved area 2 and excavation area 4, and this blast guide surface 31 is specially the side 311 of bed course 3, and explosive 5 is distributed in the central authorities in big gun hole.
Its using method comprises the steps:
1, provide a cubic meter of stone,
2, determining the position in big gun hole 1 and make it at the cubic meter of stone is tubular, with boring machine drill big gun hole 1,
3, provide a kind of bed course 3,
(1) selecting the material of bed course at the material character of the cubic meter of stone is rubber,
(2) be tubular according to big gun hole 1, and the position of reserved area 2 is for big gun hole 1 being the cubic meter of stone one half side at center, then bed course 3 is half round tube wall, and its thickness is 10mm,
(3) suppress bed course 3 with elastomeric material according to above-mentioned shape,
4, bed course 3 is pasted at the reserved area of big gun hole 1 inwall 2 walls, the corresponding blasting direction of the opening direction of bed course 3, and make blast guide surface 31 be parallel to the interface of reserved area 2 and excavation area 4, so that the blast area can more effectively be concentrated and be directed to the explosion momentum,
5, in the big gun hole, load explosive, and fill filler, detonate then.
Embodiment 3:
The device of protection explosion reserved area as shown in Figure 3; it is a kind of bed course 3 that pastes at the reserved area of big gun hole 1 inwall 2 walls 21; the corresponding blasting direction M of the opening direction of bed course 3; big gun hole 1 is specially a kind of borehole; also has a kind of blast guide surface 31 in the bed course 3; this blast guide surface 31 is parallel to the interface 41 of reserved area 2 and excavation area 4, and this blast guide surface 31 is specially the side 311 of bed course 3, and explosive 5 is distributed in the central authorities in big gun hole.
Its using method comprises the steps:
1, provide a cubic meter of stone,
2, determining the position in big gun hole 1 and make it at the cubic meter of stone is tubular, with boring machine drill big gun hole 1,
3, provide a kind of bed course 3,
(1) selecting the material of bed course at the material character of the cubic meter of stone is copper,
(2) be tubular according to big gun hole 1, and the position of reserved area 2 is for big gun hole 1 being the cubic meter of stone one half side at center, then bed course 3 is an arc barrel, and its thickness is 0.1mm,
(3) suppress four bed courses 3 with copper according to above-mentioned shape,
4, four bed courses 3 are on average pasted at the reserved area of big gun hole 1 inwall 2 walls, the corresponding blasting direction of the opening direction of bed course 3, and make blast guide surface 31 be parallel to the interface of reserved area 2 and excavation area 4, so that the blast area can more effectively be concentrated and be directed to the explosion momentum
5, in the big gun hole, load explosive, and fill filler, detonate then.
Embodiment 4:
Device as Fig. 4, protection explosion reserved area shown in Figure 5; it is a kind of bed course 3 that pastes at the reserved area of big gun hole 1 inwall 2 walls 21; the corresponding blasting direction M of the opening direction of bed course 3; big gun hole 1 is specially a kind of tubaeform chamber; also has a kind of blast guide surface 31 in the bed course 3; this blast guide surface 31 is parallel to the interface 41 of reserved area 2 and excavation area 4; this blast guide surface 31 is specially the madial wall 312 of bed course 3; explosive 5 is distributed in the bottom in big gun hole, and the wall in big gun hole 1 also has a wire guide 11.
Its using method is for comprising the steps:
1, provide a cubic meter of stone,
2, determining the position in big gun hole 1 and make it at the cubic meter of stone is tubular, with boring machine drill big gun hole 1,
3, provide a kind of bed course 3,
(1) selecting the material of bed course at the material character of the cubic meter of stone is the composite of copper and plastics,
(2) be tubaeform chamber according to big gun hole 1, its horn mouth is square, and the position of reserved area 2 is opening one side of tubaeform chamber, then bed course 3 is five, and wherein a slice is distributed in the bottom of chamber, all the other four four madial walls 312 that are distributed in chamber respectively, its thickness is 5mm
(3) suppress four bed courses 3 with steel according to above-mentioned shape,
4, five bed courses 3 are pasted respectively at the reserved area of big gun hole 1 inwall 2 walls, the corresponding blasting direction of the opening direction of bed course 3, and make blast guide surface 31 be parallel to the interface of reserved area 2 and excavation area 4, so that the blast area can more effectively be concentrated and be directed to the explosion momentum
5, in the big gun hole, load explosive, detonate then.
Most preferred embodiment:
The device of protection explosion reserved area as shown in Figure 6, the structure of its chamber are the flared structure that shrink at the middle part, and explosive 5 is distributed in the latter half of of big gun hole 1.And the thickness of bed course is 3mm.Architectural feature that present embodiment is not stated and using method are identical with embodiment 4.
It is same as the prior art that various embodiments of the present invention are not stated part.
Claims (11)
1, the device of protection explosion reserved area is characterized in that it is a kind of bed course (3) that pastes at reserved area (2) wall (21) of big gun hole (1) inwall, the corresponding blasting direction of the opening direction of bed course (3).
2, the device of protection explosion according to claim 1 reserved area is characterized in that also having a kind of blast guide surface (31) in the bed course (3), and this blast guide surface (31) is parallel to the interface of reserved area (2) and excavation area (4).
3, the device of protection explosion according to claim 2 reserved area is characterized in that the blast guide surface (31) of bed course (3) is the side (311) of bed course (3).
4, the device of protection explosion according to claim 2 reserved area is characterized in that the blast guide surface (31) of bed course (3) is the madial wall (312) of bed course (3).
5, the device of protection explosion according to claim 1 reserved area is characterized in that, bed course (3) or be made of metal, or make by pottery, or be made of plastics, or make by rubber, or make by the composite that above-mentioned four kinds of any combination thereof form.
6, the device of protection explosion according to claim 5 reserved area is characterized in that, this metal is concrete or be iron or for copper or for steel or for aluminium alloy or be titanium alloy.
7, the device of protection explosion according to claim 5 reserved area is characterized in that, this pottery is concrete or be corundum, or is boron carbide, or is carborundum.
8, the device of protection explosion according to claim 1 reserved area is characterized in that the thickness of bed course (3) is 0.1mm～10mm.
9, the device of protection explosion according to claim 8 reserved area is characterized in that the thickness of bed course (3) is 1mm～3mm.
10, the device of protection explosion according to claim 1 reserved area is characterized in that plural pieces bed course (3) is covered on reserved area (2) wall (21) of big gun hole (1) inwall.
11, the using method of the device of protection explosion reserved area is characterized in that it comprises the steps:
(1) provide a kind of explosion object,
(2) determine the position and the shape in big gun hole at the explosion object, bore the big gun hole,
(3) provide a kind of bed course,
1. select the material of bed course at the material character of explosion object,
2. determine the shape of bed course according to the position of big gun hole shape and reserved area,
3. prepare bed course,
(4) bed course is pasted reserved area wall at big gun hole inwall, the corresponding blasting direction of the opening direction of bed course,
(5) filling explosive and detonating in the big gun hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031322840A CN1538138A (en) | 2003-08-06 | 2003-08-06 | Device for protecting reserved area in uast hole and its use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031322840A CN1538138A (en) | 2003-08-06 | 2003-08-06 | Device for protecting reserved area in uast hole and its use method |
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| Publication Number | Publication Date |
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| CN1538138A true CN1538138A (en) | 2004-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031322840A Pending CN1538138A (en) | 2003-08-06 | 2003-08-06 | Device for protecting reserved area in uast hole and its use method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545747B (en) * | 2009-05-03 | 2012-10-10 | 张志呈 | Charging structure for directional pressure relief vibration isolation blasting |
| CN108061495A (en) * | 2017-10-24 | 2018-05-22 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
-
2003
- 2003-08-06 CN CNA031322840A patent/CN1538138A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101545747B (en) * | 2009-05-03 | 2012-10-10 | 张志呈 | Charging structure for directional pressure relief vibration isolation blasting |
| CN108061495A (en) * | 2017-10-24 | 2018-05-22 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
| CN108061495B (en) * | 2017-10-24 | 2018-08-28 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
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