KR101847085B1 - A method for hydraulic pressure rock splitting using a slot - Google Patents

Abstract

The present invention relates to a method for cutting a rock by hydraulic pressure by using a slot formed at an interval and a lower end of a packer by the pressure of the water injected after the multiple packers are inserted into the rock by being connected at fixed intervals. The method for cutting a rock by hydraulic pressure by using a slot includes: a bored hole generating step of generating multiple bored holes of a size in which the packet can be inserted at predetermined depth from the rock; a slot forming step of forming the slots parallel to the diameter of the bored hole in the longitudinal direction on a wall surface of the bored hole in which the interval is positioned, wherein the slot in the rotation direction perpendicular to the diameter of the bored hole at a right angle in the longitudinal direction is formed on the wall surface of a lower end of the packer in the slot forming step; a packer fixing step of expanding the packer after inserting the packer into the bored hole, and attaching the packer to the wall surface of the bored hole; a slot crack step of inducing a crack along the slot parallel to the diameter of the bored hole by applying the hydraulic pressure to the wall surface of the bored hole in which the interval is positioned; a rotation-directional slot crack step of inducing the crack along the slot of the rotation direction perpendicular to the diameter of the bored hole by applying the hydraulic pressure to the lower end of the packer; and a step of collecting a rock fragment from a parent rock from the crack generating the slot.

Description

[0001] The present invention relates to a method for hydraulic pressure rock splitting using a slot,

More particularly, the present invention relates to a method for forming a slot in a direction perpendicular to a diameter of a pile and a slot in a direction parallel to the pile diameter and a slot in a direction perpendicular to the pile diameter, The present invention relates to a hydraulic rock cutter using a slot for cutting an arm piece from a parent rock.

Generally, in order to crush the rock for the civil engineering work or the construction work, a blasting hole is formed in the rock, and a blasting hole is formed in the blast hole, and the blasting is performed by exploding the blasting hole. In the case of the special rock, Has been used.

However, when rock mass is crushed using gunpowder, it is easy to crush rock mass. However, there is a problem that heavy noise, vibration and dust are generated due to the use of explosives, There is a problem that a high level of expertise is needed to deal with gunpowder.

In the case of rock breakage by machine or manpower, the progress speed of the rock crushing operation is significantly lower than that of the blasting method, and there is a problem in that it is severely restricted by the actual working environment.

In order to solve the problems of the above blasting, mechanical and excavation methods, a vibrationless and noiseless rock breaking method has been introduced in which a pore is formed in a rock bed and then an inflatable material is injected to cut the rock from the inside.

The vibration-free and noise-free rock crushing method is a method in which a large number of perforations are formed in a rock and then water such as water or air is injected into the perforations and water pressure is applied to crack the wall of the inner perforations .

This vibration-free and noise-free rock crushing method has the merit that vibration and noise can be remarkably reduced without being affected by the rock strength because the necessary portion can be cut without indiscriminate cracking of the rock.

However, in the case of the technique of incising the rock mass by injecting the inflatable material as described above, when the hole is drilled irrespective of the result of the rock, or when the hole is drilled in the rock having high strength and high graininess, There is a problem that it is very low.

A related prior art is Korean Patent No. 10-0972628 (registered on July 28, 2010).

The present invention has been devised in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method of manufacturing a multi- A plurality of packers, which are expansion means, are inserted, and then water pressure is applied stepwise or simultaneously to cut the rock in a direction parallel to the pore diameter or in a rotating direction. There is a purpose.

In addition, the present invention can expand the packer by connecting the central part of a plurality of packers inserted in the perforation of the rock with intervals and providing a valve therebetween, and simultaneously spraying water at the lower part of the interval and the packer, And an object of the present invention is to provide a hydraulic rock cutter using a slot for applying a hydraulic pressure to a slot formed portion.

The objects of the embodiments of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description .

In order to accomplish the above object, the present invention provides a method of inserting a plurality of packers into a rock with a constant interval and using a slot formed at a lower end of the packer, A slot formed in a direction parallel to the longitudinal direction of the perforated wall surface at which the interval is to be formed, and a slot formed at a wall surface of the lower end of the packer at a right angle to the longitudinal direction A packer fixing step of inserting a packer into the perforation and expanding the inserting hole into the perforated wall surface; and applying a water pressure to the perforated wall surface at which the interval is located, A slot cracking step in parallel with the punching diameter to induce a crack along a slot parallel to the packer A rotational direction slot cracking step of applying a hydraulic pressure to the slit forming cracks to induce a crack along a rotational direction slot perpendicular to the pit diameter; can do.

Specifically, in the slot forming step, the slots formed in parallel with the tapped hole may be formed as at least one straight groove by reciprocating the hole wall surface a plurality of times in the longitudinal direction.

Specifically, in the slot forming step, the slot in the rotational direction perpendicular to the slot diameter may be formed as a circular groove by rotating the groove forming mechanism a plurality of times at the lower end of the packer.

Specifically, the number of times of rotation or the number of times of rotation of the groove forming mechanism is set to a value corresponding to the number of revolutions or the number of revolutions of the groove forming mechanism provided in the groove forming mechanism until the depth of the groove in the direction parallel to the diameter- And is automatically determined by the sensor.

Specifically, in the slot forming step, the depth of the slot in the slot parallel to the slot diameter and the slot in the slot in the rotational direction perpendicular to the slot diameter may be 10 mm to 30 mm.

Specifically, the hydraulic pressure path injected through the packer is configured such that a hydraulic pressure injection path for expanding the packer, an interval of the packer, and a number of injection paths for applying a hydraulic pressure to the perforations where the lower end of the packer is located are separated from each other .

Specifically, the pressure of the water injected through the packer may be distributed to the interval of the packer and the lower end of the packer by a valve provided for each of the packers.

INDUSTRIAL APPLICABILITY As described above, the present invention has an effect that cracks grow and propagate due to stress concentration while being infinitely increased in the stress at the crack tip portion existing in the linear elastic body.

Further, according to the present invention, a slot in a direction parallel to the punching hole and a slot in a direction of rotation perpendicular to the punching hole are formed in the inner wall surface of the punch hole of the rocker into which the packer is inserted, and then the packer is inserted. So that the rock is cut in a desired direction to generate cracks.

Further, the present invention has the effect of easily breaking the rock in the slot direction even if the rock to be cut has no texture or has high strength.

In addition, the present invention has the effect of forming a slot in a direction parallel to the punching hole and a slot in the direction of rotation perpendicular to the punching hole in a plurality of punching inner wall surfaces, and then collecting the pieces of rock from the parent rock by hydraulic action.

FIG. 1 is a perspective view schematically showing a hydraulic rock cutter using a slot according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a detailed view showing a state where the packer shown in FIG. 1 is inserted into the perforations of the rock.
FIG. 3 is a view showing a perforated cross section in which slots in a direction parallel to the tread hole shown in FIG. 1 and slots in a direction of rotation perpendicular to the tread hole are formed.
FIG. 4 is a flowchart of a hydraulic pressure incision method using a slot according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of embodiments of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, which may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view schematically showing a hydraulic rock cutter using a slot according to an embodiment of the present invention. FIG. 2 is a detailed view of a state in which the packer shown in FIG. 1 is inserted into a hole of a rock The valve 200 includes a body 210 and an injection port 220. The valve body 200 includes a plurality of packers 100 and an injection tube 110. The valve 200 is used for a hydraulic rock cutter using a slot, .

The packer 100 is inserted into the perforations formed in the rock and then expanded and fixed by the injection of water to thereby isolate and seal the interval I of the packer and the lower end portion E of the packer, And performs a function of applying pressure when water is injected into the perforation section where the lower end (E) of the packer is located.

The packer 100 has a structure in which an elastic member made of an elastic material such as rubber is wrapped around the outside from the innermost side and made of a cylindrical tube made of a metal composed of a supporting member, a pressing member and an extending member. And a water pressure pipe through which water passes is located at the inner center portion.

The elastic member constituting the outside of the packer 100 is made of a material that surrounds the expanding member and can be smoothly changed as the expanding member therein is expanded or returned to its original shape. That is, the elastic member of the packer 100 is preferably made of rubber, synthetic urethane or the like.

The cylindrical expansion member located on the outer side of the inside of the packer 100 has a structure divided into a plurality of sections by sectioning, and when the inner tube is inflated by the water pressure, So that the elastic members that surround the outer surface are pushed outward. So that the expanded packer 100 can be firmly fixed within the perforation (not shown).

A cylindrical pressing member located inside the expanding member in the inside of the packer 100 functions to push out the expanding member outward through the pressure of the water sprayed from the inside. Therefore, it is made of a material having an elastic property so as to be inflated by the internal water pressure (not shown).

Further, a plurality of protrusions coinciding with the incision lines of the expanding member are formed on the outer circumferential surface of the pressing member, so that the divided members of the expanding member are interposed therebetween when they are separated. It is preferable that the protrusion has a size such that it is formed to have a size larger than the interval between the inclines of the extending member and does not escape through the incision. This is because if the protrusion is passed through the incision, it prevents the expansion member from being restored to its original state (not shown).

The cylindrical support member located inside the pressure member in the inside of the packer 100 has a structure in which a plurality of holes are formed at regular intervals so as to receive a water pressure pipe through which water passes, (Not shown).

In addition, such support members are formed with threads on the outer peripheral surfaces of the upper and lower ends, respectively, so as to be closed by a coupler such as a cap so that the water sprayed in all directions does not escape.

The injection pipe 110 functions not only to supply water to the pressing member from the outside of the packer 100 but also to supply water to the outside of the packer 100 and the inside of the hole through the injection port 220 of the valve 200, Function. At this time, it is preferable that a separate pipe is formed so that the water supplied to the pressurizing member and the water supplied through the injection port 220 are separately supplied through different paths.

In other words, the injection pipe 110 is formed with a double pipe through which water is supplied so that one pipe supplies water to the pressure member, and the other pipe supplies water to the injection port 220.

In addition, the injection pipe 110 may be connected to a water pressure control unit for individually controlling the water pressure of the plurality of pipes. This is because when the packer 100 is expanded and fixed to the perforation, water is sprayed in a state in which the interval (I) section and the lower portion (E) of the packer are sealed to increase the water pressure in the interval, If the water is simultaneously injected into the pressure member and the jetting port 220 in the air bag 100, the water may be injected in a non-sealed state.

The valve 200 is designed to facilitate connection and disconnection of each packer 100. In an embodiment of the present invention, the interval I and the packer lower end E are located, (Not shown) in which a pipe through which the water is injected into the compression member of the packer 100 and a pipe through which the water pressure is injected into the injection port 220 are separated.

In other words, the path of the water injected through the packer 100 is determined by the water injection path for expanding the packer 100, the interval I of the packer 100 and the perforation H where the packer lower end E is to be positioned So that the injection paths of the water for applying the water pressure can be separated from each other.

The valve 200 includes a spool and a cartridge provided inside the valve body 210 and an injection port 220 formed outside the valve body 210 so that the water injected into the pipe connected to the injection port 220 When the water pressure exceeds a predetermined level, the valve cartridge moves, and the valve spool moves horizontally as the spool spring is operated by the movement of the valve cartridge, thereby distributing the water pressure to the interval (I) and the water pressure to the lower portion (E) Function.

Hereinafter, the operation of the packer 100 and the valve 200 according to an embodiment of the present invention will be described.

First, a perforation is formed in the rock mass to be incised and a packer 100 is inserted into the inner part. When water is supplied to the pressing member, the pressing member is extended to push the extending member outward, . At this time, the projection of the pressing member is positioned between the individual pieces of the extending member to support the extending member. Further, the elastic member of the pressing member is prevented from being damaged by an external impact by the metal expansion member.

As a result, the elastic member surrounding the outer peripheral surface of the expansion member expands to fill the perforated inner wall. As a result, the interval I between the packer 100 and the packer 100 and the lower end E of the packer 100 are sealed It becomes space.

Next, water is injected into the enclosed space and the rock is cut by water pressure.

Hereinafter, the method for constructing the hydraulic pressure chamber using the slot for cutting the rock using the packer 100 and the valve 200 according to an embodiment of the present invention will be described.

FIG. 3 is a cross-sectional view illustrating a slot in a direction parallel to the tapped hole shown in FIG. 1 and a slot in a direction of rotation perpendicular to the tapped hole. FIG. 4 is a cross- As shown in the flow chart of the rock incision cutting method, a hydraulic rock cutter method using a slot in which a plurality of packers 100 of the present invention are connected with a certain interval I and inserted into a rock, (S510) for generating a plurality of perforations (H) of a size capable of being inserted into the space (100) by a predetermined depth in the rock; and a perforation forming step A slot forming step S520 of forming a slot S1 in a direction perpendicular to the longitudinal direction and forming a rotational direction slot S2 perpendicular to the longitudinal direction at a wall surface of the lower end E of the packer, (100) is inserted and then expanded (S530) in which the interval (I) is placed on the perforated wall surface, and a step (S530) of applying a water pressure to the perforated wall surface in which the interval (I) (S550), and a rotating direction slot cracking step (S550) perpendicular to the punching direction to induce a crack along a rotational direction slot (S2) perpendicular to the punching direction by applying water pressure to the packer lower end portion (E) And a step (S560) of collecting the rock mass from the parent rock from the slot generation cracks.

First, the packer 100 used in an embodiment of the present invention exemplifies the use of a double packer in which two packers 100 are connected at regular intervals. That is, when the packer 100 shown in FIG. 1 is used as a reference, intervals of 60 cm to 90 cm from the lower end of the upper packer 100 become interval I, and 150 cm to 180 cm intervals from the lower end of the lower packer 100, And the lower end portion (E). And that the diameter of the perforations is 70 mm to 100 mm and the depth is 180 cm.

Of course, it is a matter of course that the specifications of the perforation H, the specifications of the packer 100 and the interval (I) interval and the interval of the packer lower end (E)

The perforating step S510 is a step of creating a plurality of perforations H of a size large enough to allow the packer 100 to be inserted in the rock to insert the packer 100 into the rock bed to be cut.

In order to incise the rock, cracks must be generated. The new cracks in the rock are affected by various factors such as the interval between pores generated in the rock, pore size, depth of penetration, and furthermore, Such as the amount of water and pressure.

Therefore, in the perforation generation step (S510), the drilling operation is performed by designing the array of perforations generated according to various types of rock masses.

The slot forming step S520 is a step of forming a slot in the perforation inner wall surface generated in the puncturing creating step S510. In the slot forming step S520, a slot S1 And forming a rotation direction slot S2 in the wall surface of the lower end portion E of the packer at a right angle to the longitudinal direction.

In the slot forming step S520, a device called a water jet, which is a groove forming mechanism 10, is inserted into the hole H to form a slot.

A water jet, which is a groove forming mechanism (10), is a device for spraying water or a polishing mixture condensed with ultra-high pressure water through a nozzle to cut a workpiece. Specifically, a high pressure pump Water of a few liters per minute is squeezed to jet the water jet, which is a groove forming mechanism 10 having a very high energy density, so that various materials can be cut easily.

In the case of the groove forming mechanism 10, a water jet is taken as an example. However, a groove forming mechanism 10 having a size and a length suitable for the diameter of the hole H may be separately designed and manufactured.

The slot S1 in the direction parallel to the tenter hole means that the water jet which is the groove forming mechanism 10 is formed into at least one straight groove by reciprocating the perforation wall surface a plurality of times in the longitudinal direction. (I) interval, which is a section between the packers 100, as shown in FIG.

In the case of the water jet, which is the groove forming mechanism 10, the nozzle has two sides on both sides so that at one time, the slot (I) Can be formed. In the embodiment of the present invention, four slots S1, which are parallel to the pit diameter, are formed.

FIG. 3 (a) is a cross-sectional view of a section of the interval (I) perpendicular to the longitudinal direction, and shows a slot S1 in a direction parallel to the perforation H along a circular perforation H Four wedges are formed.

The rotation direction slot S2 perpendicular to the taper hole means that the water jet, which is the groove forming mechanism 10, is formed into a circular groove by rotating the packing at the lower end portion E a plurality of times.

According to the example described above, the packer lower end portion E of the packer 100 corresponds to a group of about 150 cm to 180 cm deep of the perforation H, and the water jet, which is the groove forming mechanism 10, Thereby forming a rotation direction slot S2 perpendicular to the tenter hole.

3 (b) is a cross-sectional view of the perforations H in the lengthwise direction of the lower end portion E of the packer. In the wall surface of the perforation H, As shown in FIG.

The number of reciprocations or the number of rotations of the waterjet, which is the groove forming mechanism 10 for forming the slot S1 in the direction parallel to the tenter hole and the rotational direction slot S2 perpendicular to the taper hole, And the depth d of the groove of the rotation direction slot S2 perpendicular to the diameter of the hole is set to a predetermined depth, So that it can be determined automatically.

In an embodiment of the present invention, the depth of the groove of the slot S1 in the direction parallel to the tapped hole and the slot S2 in the direction of rotation S2 perpendicular to the tapped hole is 10 mm to 30 mm, It is preferable that the depth of the grooves of the slot S1 in the direction parallel to the tenter hole and the direction slot S2 in the direction perpendicular to the taper hole is about 10 mm or more.

The packer fixing step S530 is a step of inserting the packer 100 into the perforation H and then expanding the packer 100 to close the interval I and the packer lower end E by closing the perforated wall. This is because, as described above, the interval (I) section and the packer lower end (E) section must be sealed, but the pressure of water sprayed can be effectively transmitted to the perforated wall surface.

The slot cracking step S540, which is a direction parallel to the tenter hole, is a step of applying a water pressure to the pore wall surface where the interval I is located to induce a crack along the slot S1 which is parallel to the pore diameter, The water is injected through the injection port 220 of the valve 200 provided at the lower end of the packer 100 and the water pressure rises naturally so that the water pressure is concentrated into the groove of the slot S1 which is parallel to the pit diameter. Therefore, a new crack generated in the rock is generated along the slot S1 which is parallel to the above-mentioned pore diameter.

The rotating direction slot cracking step (S550) perpendicular to the punching hole is a step of applying a water pressure to the packer lower end portion E to induce a crack along a rotating direction slot S2 perpendicular to the punching hole. The pressure by the water to be injected can be distributed to the interval I of the packer 100 and the lower end portion E of the packer by the valve 200 provided for each packer 100, When the water pressure is distributed through the operation of the valve 200 provided in the interval I in the slot cracking step S540 and the water is sprayed to the jetting port 220 provided at the end of the packer 100, The water pressure is concentrated by the grooves of the rotation direction slot S2 perpendicular to the tapered pore diameter. Therefore, cracks are generated in the rock along the slot S1 in the direction parallel to the diameter of the interval of the interval (I) and the slot S2 in the direction of rotation perpendicular to the diameter of the hole perpendicular to the interval (I).

The step S560 of taking out the rock fragments from the slab-forming cracks in step S560 is a step in which cracks are generated in the longitudinal direction along the plurality of perforations H in the rock due to the previous step, The cracks are generated in the direction of vertical rotation, so that the rocks are easily cut when the water pressure is applied, so that the rock fragments are collected from the mother rock from the slot generation cracks.

Conventionally, in a method of cutting a rock by using hydraulic pressure, the rock is cut along the perforation (H) only in the longitudinal direction so that the fragment of the rock is still connected to the inner rock, so that the fragment of the rock can be easily separated There was no problem.

However, according to the present invention, slots are formed in both the vertical direction and the horizontal direction within the perforation (H) formed in the rock bed, so that the rock plate is incised not only in the longitudinal direction of the perforated line along the perforation (H) So that the fragments of the incised rock can be easily separated after the work is finished.

As described above, according to the present invention, a slot in a direction parallel to the punching hole and a slot in the direction of rotation perpendicular to the punching hole are formed on the inner wall surface of the punch hole of the rocker into which the packer is inserted, There is an effect that the rock can be easily split even if the rock is not formed or the strength is high.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be readily apparent that such substitutions, modifications, and alterations are possible.

10: groove forming mechanism
100: Packer 110: Injection pipe
200: valve 210: valve body
220: nozzle
H: Perforation I: Interval
E: Lower part of the packer S1: Slot parallel to the pile diameter
S2: Rotational direction slot perpendicular to the hole diameter d: Slot groove depth

Claims (7)

In a hydraulic rock incision method using an interval and a slot formed at the lower end of a packer due to the pressure of water injected after a plurality of packers are connected to a rock with a predetermined interval,
A perforation forming step of forming a plurality of perforations of a size capable of being inserted by the packer to a predetermined depth in the rock; and a slot in a direction parallel to the perforation in the longitudinal direction on the perforated wall surface where the interval is to be formed, A slot forming step of forming a slot in a direction perpendicular to the longitudinal direction and a slot in a direction perpendicular to the longitudinal direction of the slot, a packer fixing step of inserting the packer into the perforation, A slot cracking step of applying a water pressure to the slot and cracking the slot along a slot parallel to the slot diameter and parallel to the slot diameter; A rotational direction slot cracking step perpendicular to the pore diameter inducing the crack; And collecting the rock mass from the parent rock from the slot generation crack,
Wherein the slot formed in the slot forming direction parallel to the tapped hole is formed by at least one straight groove by reciprocating the slotted wall surface a plurality of times in the longitudinal direction.
delete The method according to claim 1,
In the slot forming step,
Wherein the rotational direction slot perpendicular to the punching hole is formed as a circular groove by rotating the groove forming mechanism a plurality of times at the lower end of the packer.
The method according to claim 1 or 3,
Wherein the number of times of rotation or the number of times of rotation of the groove forming mechanism is set to a value corresponding to a sensor provided in the groove forming mechanism until a depth of a groove in a direction parallel to the tapped hole and a groove in a rotational direction slot perpendicular to the tapped hole becomes a predetermined depth Wherein the slot is formed in the slot.
The method according to claim 1,
Wherein a depth of a groove in a direction parallel to the tapped hole and a groove in a direction of rotation perpendicular to the tapped hole in the slot forming step is 10 mm to 30 mm.
The method according to claim 1,
Wherein a path of a hydraulic pressure injected through the packer is formed such that a hydraulic pressure infusion path for inflating the packer and an infusion path of a hydraulic pressure for applying a hydraulic pressure to the perforations in which the lower part of the packer and the interval of the packer are located are separated from each other. Hydraulic Rock Cutting Method Using.
The method according to claim 1,
Wherein a pressure of water injected through the packer is distributed to an interval of the packer and a lower end of the packer by a valve provided for each of the packers.

Images