CN217481266U - A expansion rock burst device casing and expansion rock burst device for section bar exploitation - Google Patents

Abstract

The utility model discloses an expansion rock cracking device casing and expansion rock cracking device for section bar exploitation, link up formation open-ended inflation shell including ignition head, foot line and both ends, the inflation shell inner wall is formed with the notch cut to the direction of outer wall is sunken, the length direction of notch cut is followed the one end of inflation shell is directional the other end of inflation shell, two be equipped with the sealed lid that is used for sealed open-ended on the opening respectively two in the inflation shell form the accommodating space that is used for acceping the gas production medicine between the sealed lid, the one end of foot line is located accommodating space and is connected with the ignition head, the other end of foot line runs through arbitrary sealed lid and stretches out outside the inflation shell and be used for connecting the initiating explosive. Through the mutual cooperation between the above-mentioned structure, improved the exploitation precision of inflation agent exploitation mode.

Description

A expansion rock burst device casing and expansion rock burst device for section bar exploitation

Technical Field

The utility model relates to a rock exploitation technical field, concretely relates to bloated split rock device casing and bloated split rock device for section bar exploitation.

Background

The processed products of rare section bars such as marble, granite, white marble, bluestone and the like are widely applied to pavement engineering, interior decoration engineering and the like, and have better economic value. The mining modes of the stone mainly comprise rope saw cutting, detonating cord cutting, expanding agent mining, black powder blasting cutting and the like. Although the wire saw cutting has high precision and less stone waste, the efficiency is extremely low and the cost is higher. The cutting of the detonating cord involves the use of civil explosive equipment, and needs the units and individuals with the quality of blasting operation to perform the operation, and the use is greatly limited. The black powder blasting mining mode is the mode with the lowest cost and better cutting effect, but has higher danger. The existing expansion agent exploitation mode is a mode with higher safety, is not limited by use, and has lower exploitation precision.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an expansion cracked rock device casing and expansion cracked rock device for section bar exploitation, aim at solving in the current expanding agent exploitation mode, the technical problem that the exploitation precision is low.

In order to realize above-mentioned purpose, the utility model provides an inflation split rock device casing for section bar exploitation, link up formation open-ended inflation shell including ignition head, foot line and both ends, the inflation shell inner wall is formed with the cut groove to the direction of outer wall is sunken, the length direction of cut groove is followed the one end of inflation shell is directional the other end of inflation shell, two be equipped with the sealed lid that is used for sealed open-ended on the opening respectively two in the inflation shell form the accommodating space who is used for acceping the gas production medicine between the sealed lid, the one end of foot line is located accommodating space and is connected with the ignition head, the other end of foot line runs through arbitrary sealed lid and stretches out outside the inflation shell and be used for connecting the initiating explosive, the cut groove is rectangular shape.

Preferably, the depth of the notch is more than one fifth of the wall thickness of the expansion shell and less than four fifths of the wall thickness of the expansion shell.

Preferably, the notch penetrates from one end of the expansion shell to the other end of the expansion shell.

Preferably, the outer wall of the expansion shell is provided with positioning clamping strips corresponding to the number of the notches, and the positions of the positioning clamping strips are respectively in one-to-one correspondence with the positions of the notches.

Preferably, the positioning clip strip is arranged close to one of the openings of the two sealing covers for drilling towards the section bar.

Preferably, one side of the sealing cover, which is far away from the accommodating space, is flush with the end face of the expansion shell.

Preferably, the retainer strip tapers away from the expansion shell.

Preferably, the positioning clamping strip is used for being inserted into the pre-splitting groove in the hole wall of the section drilling hole, and one end of the positioning clamping strip, which is gradually reduced, is in interference fit with the groove wall of the pre-splitting groove.

Preferably, the positioning clamping strip is a retractable elastic clamping strip.

The utility model provides an expansion rock cracking device, including any one of the aforesaid expansion rock cracking device casing, the gas production medicine has been acceptd in the expansion rock cracking device casing, the ignition head is located in the gas production medicine.

The technical scheme of the utility model in, the gas production medicine is filled in the expansion rock cracking device casing, and the ignition head is acceptd in the gas production medicine.

The method for the expansion rock cracking device to mine the section comprises the following steps:

s1: determining one to four cutting lines according to the shape of the profile raw material and the impurity condition of the profile leftover material;

s2: drilling holes in the center of each cutting line by using a drilling machine;

s3: placing the expansion cracking device into the drill hole, aligning the notch groove with the cutting line, and reserving an air interval section between the bottom of the drill hole and the expansion cracking device;

s4: blocking the orifice of the drill hole by using a blocking material, and enabling the expansive cracking device to be positioned between the blocking material and the hole bottom of the drill hole;

s5: and connecting the primer to the leg wire, and carrying out electric detonation to finish the cutting operation.

Preferably, the outer wall of the expansion shell is provided with a number of positioning clamping strips corresponding to the notches, and the position of each positioning clamping strip corresponds to the position of each notch one by one; between the step S2 and the step S3, the method further includes the following steps:

and S6, using a flat drill to symmetrically open pre-splitting grooves on two sides of the hole wall of each drill hole along the cutting line direction.

Produce gas medicine inflation and produce gas, gas strikes and leads to the rock fracture to the rock, and the cutting groove is used for forming stress concentration point, guarantees that the gas that produces gas medicine carries out the work along the line of cut direction, makes the rock take place directional fracture along the line of cut, through mutually supporting between the above-mentioned structure, has improved the exploitation precision of inflation agent exploitation mode.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a top view of the present invention applied to profile mining;

FIG. 2 is a cross-sectional view taken along line A-A of the present invention;

fig. 3 is a schematic view of a partial enlarged structure at the position M of the present invention;

fig. 4 is a sectional view of the utility model taken along line B-B;

fig. 5 is a C-C sectional view of the present invention.

The reference numbers illustrate:

1. a sealing cover; 2. expanding the shell; 3. positioning the clamping strip; 5. a leg wire; 6. an ignition head; 7. a gas producing drug; 8. profile scraps; 9. pre-splitting a groove; 10. drilling; 11. raw material of the section bar; 12. cutting a line; 13. an air compartment; 14. an initiator; 15. plugging materials; 16. and (6) grooving.

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, descriptions in the present application as to "first," "second," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

The utility model provides an expansion cracked rock device casing and expansion cracked rock device for section bar exploitation.

Referring to fig. 1 to 5, the casing of the expandable rock cracking device for section mining comprises an ignition head 6, a leg wire 5 and an expansion shell 2, wherein two ends of the expansion shell 2 are communicated to form an opening, an inner wall of the expansion shell 2 is recessed towards an outer wall to form a notch 16, the length direction of the notch 16 points to the other end of the expansion shell 2 from one end of the expansion shell 2, sealing covers 1 for sealing the openings are respectively arranged on the two openings, an accommodating space for accommodating a gas producing explosive 7 is formed between the two sealing covers 1 in the expansion shell 2, one end of the leg wire 5 is located in the accommodating space and is connected with the ignition head 6, the other end of the leg wire 5 penetrates through any one sealing cover 1 to extend out of the expansion shell 2 and is connected with an initiator 14, and the notch 16 is long in strip shape.

The technical scheme of the utility model in, the gas production medicine 7 is filled in the expansion split rock device casing to the expansion split rock device, and the ignition head 6 is acceptd in the gas production medicine 7.

The method for the expansion cracking rock device to be used for profile mining comprises the following steps:

s1: determining one to four cutting lines 12 according to the shape of the profile rough material 11 and the impurity condition of the profile leftover material 8;

s2: drilling a drill hole 10 in the center of each cutting line 12 by using a drilling machine;

s3: placing the expansion cracking device into the borehole 10 with the cutting line 12 aligned with the cutting groove 16 and with an air spacer 13 reserved between the bottom of the borehole 10 and the expansion cracking device;

s4: plugging the orifice of the borehole 10 with a plugging material 15 such that the spalling device is located between the plugging material 15 and the bottom of the borehole 10;

s5: and connecting the initiator 14 with the leg wire 5, and performing electric initiation to finish the cutting operation.

Referring to fig. 1 to 5, the outer wall of the expansion shell 2 is provided with a number of positioning clamping strips 3 corresponding to the notches 16, and the position of each positioning clamping strip 3 corresponds to the position of each notch 16 one by one; between the step S2 and the step S3, the method further includes the following steps:

and S6, using a flat drill to symmetrically open pre-splitting grooves 9 on both sides of the hole wall of each drill along the cutting line 12.

Gas production medicine 7 inflation produces gas, and gas is strikeed and is leaded to the rock fracture to the rock, and cutting 16 is used for forming the stress concentration point, guarantees that the gas that gas production medicine 7 produced does work along cutting line 12 direction, makes the rock take place directional fracture along cutting line 12, through mutually supporting between the above-mentioned structure, has improved the exploitation precision of inflation agent exploitation mode.

Referring to fig. 4-5, the depth of the notch 16 is more than one fifth of the wall thickness of the expansion shell 2 and less than four fifths of the wall thickness of the expansion shell 2. The wall thickness of the shell wall of the expansion shell 2 provided with the notch 16 is thinner than that of the shell wall of the expansion shell 2 without the notch 16, so that the expansion shell 2 is easier to burst open along the notch 16, and the expansion shell 2 is ensured to be directionally cracked after the gas producing medicament 7 is excited. The cross section of the notch 16 is rectangular. The rectangular notches 16 make it easier to concentrate the stress points so that the expansion shell 2 bursts along the notches 16.

Referring to fig. 4-5, the notches 16 extend through the expansion shell 2 from one end of the expansion shell 2 to the other end of the expansion shell 2. The direction of the engraved grooves 16 is located in the side wall of the expansion shell 2 so as to facilitate the insertion of the expansion shell 2 into the borehole 10, so that the bursting direction of the expansion shell 2 is perpendicular to the extending direction of the borehole 10, and further so that the gas ejected from the expansion shell 2 impacts the hole wall of the borehole 10 and causes directional fracture of the rock.

Referring to fig. 3-4, the outer wall of the expansion shell 2 is provided with positioning clip strips 3 corresponding to the number of the notches 16, and the positions of the positioning clip strips 3 respectively correspond to the positions of the notches 16 one by one. The position of the positioning clamp strip 3 corresponds to that of the notch 16, so that the position of the notch 16 can be observed on the outer wall of the expansion shell 2, the position of the expansion shell 2 is placed according to the direction of rock fracture as required, and the positioning clamp strip 3 faces the direction of the rock fracture as required. The expansion shell 2 is cylindrical in shape. The cylindrical expansion shell 2 is easy to place in the borehole 10.

Referring to fig. 3-4, the retainer strip 3 is disposed adjacent to one of the openings of the two sealing caps 1 for facing the profile bore 10. The positioning clamping strip 3 is adhered to the outer wall of the expansion shell 2.

Referring to fig. 3, the side of the sealing cover 1 facing away from the receiving space is flush with the end surface of the expansion shell 2. The sealing cover 1 is connected with the expansion shell 2 through a thread or an adhesion mode.

Referring to fig. 3-4, the retainer strips 3 taper away from the expansion shell 2. Specifically, the cross section of the positioning clamping strip 3 is triangular. The positioning clip strip 3 with the triangular section can enable the positioning clip strip 3 to be easily inserted into the slot.

Referring to fig. 4, the positioning locking strip 3 is used to be inserted into the pre-splitting groove 9 on the hole wall of the section drill 10, and the tapered end of the positioning locking strip 3 is in interference fit with the groove wall of the pre-splitting groove 9. The locator clip 3 is adapted to be inserted into the pre-split groove 9 in the wall of the borehole 10 such that the notch 16 in the expansion shell 2 is aligned with the pre-split groove 9, further causing the expansion shell 2 to impact the pre-split groove 9 upon bursting.

Referring to fig. 4, the positioning clip strip 3 is a retractable elastic clip strip. The positioning clamping strip 3 can be any one of a natural rubber clamping strip, an isoprene rubber clamping strip, a styrene butadiene rubber clamping strip, a chloroprene rubber clamping strip, a nitrile butadiene rubber clamping strip, a silicone rubber clamping strip, a fluorine rubber clamping strip and a polysulfide rubber clamping strip. The positioning clamp strip 3 adopts an elastic structural member, so that the positioning clamp strip 3 can be in interference fit with the pre-splitting groove 9.

Referring to fig. 1 to 5, the expandable rock cracking device comprises any one of the expandable rock cracking device shells, a gas production charge 7 is contained in the expandable rock cracking device shell, and the ignition head 6 is located in the gas production charge 7. When in ignition, the ignition head 6 ignites the gas-generating mixture through the initiator 14, the gas-generating mixture generates gas when meeting fire and expands in the expansion shell 2, and then the gas cracks the expansion shell 2 along the through groove, so that the stone is directionally fractured.

The gas generant composition 7 may utilize an existing gas generant composition 7. in this embodiment, the gas generant composition 7 includes potassium perchlorate, salicylic acid, and ammonium oxalate:

wherein the content of potassium perchlorate is 50-60%, the content of salicylic acid is 10-20%, and the content of ammonium oxalate is 10-20%. The gas-producing drug 7 also contains additives for adjusting the performance of the product, and the content of the additives is 2 to 10 percent.

The expansive rock cracking device filled with the gas production explosive 7 does not belong to the category of explosives, the expansive rock cracking device cannot be directly excited outside a drill hole 10 through an initiator 14, the expansive rock cracking device can be excited by the initiator 14 after being filled into the drill hole 10 and being blocked through a blocking material 15, the gas production explosive 7 can generate a large amount of gas, the section bar rough material 11 is directionally cracked along the direction of the pre-splitting groove 9, and the cutting integrity of the section bar rough material 11 is guaranteed. The notch 16 formed in the expansion shell 2 forms a stress concentration point, and the gas product after detonation opens the expansion pipe notch 16 first, and forms a linear energy accumulation effect, so that the acting power of the cutting type rough material 11 is improved. The positioning clamping strip 3 is used for ensuring that the direction of the notch 16 in the expansion pipe shell is consistent with the direction of the pre-splitting groove 9, the width of the notch is greater than the depth of the pre-splitting groove 9, certain contractibility is achieved, and the device can be ensured to be fixed at any position in a blast hole in an interference connection mode. The pre-splitting groove 9 is used for forming another stress concentration point, so that gas products generated by the reaction of the gas producing agent 7 do work along the direction of the pre-splitting groove 9, and directional fracture along the cutting line 12 is guaranteed. The setting of air spacer 13 provides the space for producing the expansion effect of gas medicine 7, can adjust air spacer 13's height according to different section bar crude materials 11 hardness to improve the homogeneity of producing gas medicine 7 energy effect, reduce the damage to section bar crude materials 11. Through the mode, the rapid and accurate cutting of the profile block 11 is realized, the smoothness of a cutting surface is ensured, and the safety of the construction process can be ensured.

The above is only the preferred embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent structures made by the contents of the specification and the drawings are utilized under the idea of the present invention, or directly/indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. The utility model provides an inflation split rock device casing for section bar exploitation, its characterized in that link up including ignition head, foot line and both ends and form open-ended inflation shell, the inflation shell inner wall is sunken to be formed with the cut groove to the direction of outer wall, the length direction of cut groove is followed the one end of inflation shell is directional the other end of inflation shell, two be equipped with respectively on the opening and be used for sealed open-ended sealed lid expand in the shell two form the accommodating space who is used for acceping the gas generant charge between the sealed lid, the one end of foot line is located accommodating space and is connected with the ignition head, the other end of foot line runs through arbitrary sealed lid and stretches out outside the inflation shell and be used for connecting the detonator, the cut groove is rectangular shape.

2. The spallation device casing for profiled mining of claim 1, wherein the depth of the score groove is more than one fifth of the wall thickness of the spallation casing and less than four fifths of the wall thickness of the spallation casing.

3. The spallation device shell for profile mining of claim 1, wherein the score groove passes through the shell from one end of the shell to the other end of the shell.

4. The expanded rock cracking device shell for profile mining as claimed in claim 1, wherein the outer wall of the expanded shell is provided with positioning clamping strips corresponding to the number of the notches, and the position of each positioning clamping strip corresponds to the position of each notch one by one.

5. The spall device casing for profile mining of claim 4, wherein the locator bar is located proximate to one of the two sealing covers for drilling a hole into the profile.

6. The expanded split rock device casing for profile mining according to any one of claims 1 to 5, wherein a side of the sealing cover facing away from the receiving space is flush with an end face of the expansion casing.

7. The spall device shell for profile mining of claim 4, wherein the locator clip tapers away from the spall shell.

8. The expandable rock cracking device shell for section bar mining as claimed in claim 7, wherein the positioning clamping strip is used for being inserted into the pre-splitting groove on the hole wall of the section bar drilling hole, and one end of the gradually reduced positioning clamping strip is in interference fit with the groove wall of the pre-splitting groove.

9. The spall device shell for profile mining of claim 4, wherein the locating snap strip is a retractable resilient snap strip.

10. An expandable rock cracking device, comprising an expandable rock cracking device casing as claimed in any one of claims 1 to 9, wherein a gas generant composition is contained within the expandable rock cracking device casing and the ignition head is located within the gas generant composition.

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