CN112833715B - Rock mass excavation device and method - Google Patents
Rock mass excavation device and method Download PDFInfo
- Publication number
- CN112833715B CN112833715B CN202110072094.3A CN202110072094A CN112833715B CN 112833715 B CN112833715 B CN 112833715B CN 202110072094 A CN202110072094 A CN 202110072094A CN 112833715 B CN112833715 B CN 112833715B
- Authority
- CN
- China
- Prior art keywords
- hole
- tank body
- rock mass
- carbon dioxide
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B3/00—Blasting cartridges, i.e. case and explosive
- F42B3/04—Blasting cartridges, i.e. case and explosive for producing gas under pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/14—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by compressed air; by gas blast; by gasifying liquids
Abstract
The invention discloses a rock mass excavation device and method, and relates to the technical field of rock mass engineering. The rock mass excavating device comprises a tank body and an excitation pipe arranged in the tank body, the inner wall of the tank body is provided with a cutting groove along the axial direction of the tank body, the tank body is used for storing liquid carbon dioxide, the excitation pipe is used for converting the liquid carbon dioxide into supercritical carbon dioxide under the electrified state, the tank body is further connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank body in a drilling hole. The rock mass excavating device can directionally and intensively release energy, has higher safety and stronger rock breaking capacity, can effectively improve the rock breaking efficiency, and can reduce the damage to the reserved rock mass.
Description
Technical Field
The invention relates to the technical field of rock mass engineering, in particular to a rock mass excavation device and method.
Background
The hard rock body is excavated and stripped in the most effective way by adopting the traditional chemical blasting mode, but because the explosive can generate vibration and a large amount of harmful gas, noise and flying stones during detonation, the environment is adversely affected and the blasting process is uncontrollable, and therefore, the rock body excavation in the complex environment area generally adopts the processes of hydraulic crushing, static crushing and the like. However, the hydraulic crushing, static crushing and other processes have high cost and low efficiency, and are generally used as auxiliary measures in engineering.
Currently, rock mass excavation engineering of small amount of areas with complex environments is attempted to adopt a liquid carbon dioxide phase transition fracturing technology. However, compared to conventional blasting methods, the carbon dioxide fracturing technique produces lower impact pressure and gas expansion pressure, resulting in lower rock breaking efficiency. In addition, the used carbon dioxide fracturing device belongs to a high-pressure container series, has certain dangers in the transportation and installation processes, and is easy to cause safety accidents such as a flying tube and the like.
Disclosure of Invention
The invention aims to provide a rock mass excavation device and method, which are used for solving the technical problems of insufficient rock breaking capacity and lower safety caused by smaller energy in the carbon dioxide phase change fracture technology in the prior art.
Embodiments of the present invention are implemented as follows:
in one aspect of the embodiment of the invention, a rock mass excavating device is provided, which comprises a tank body and an excitation pipe arranged in the tank body, wherein a cutting groove is formed in the inner wall of the tank body along the axial direction of the tank body, the tank body is used for storing liquid carbon dioxide, the excitation pipe is used for converting the liquid carbon dioxide into supercritical carbon dioxide in an electrified state, the tank body is also connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank body in a drilled hole.
Optionally, the positioning mechanism comprises a base communicated with the inner cavity of the tank body through the bottom of the tank body and a positioning pin arranged on the base, a positioning hole is formed in the side wall of the base, the bottom of the positioning pin stretches into the positioning hole and seals the positioning hole, and the diameter of the top of the positioning pin is larger than that of the positioning hole so as to prevent the positioning pin from being separated from the base.
Optionally, the rock mass excavating device further comprises a liquid filling nozzle communicated with the inside of the tank body, and the liquid filling nozzle is used for filling liquid carbon dioxide into the tank body.
Optionally, the rock mass excavation device further comprises a top cover connected with the top of the tank body, an inner plug, a ball valve and a spring, wherein the inner plug, the ball valve and the spring are arranged in the top cover, a through hole is formed in the top cover, the large-diameter end of the through hole faces the tank body, the inner plug is arranged at the large-diameter end of the through hole, a diversion hole is formed in the inner plug, the diversion hole is communicated with the tank body, the liquid filling nozzle is arranged at the small-diameter end of the through hole, one end of the spring is connected with the inner plug, the other end of the spring is connected with the ball valve, and the ball valve divides the through hole into two parts which are isolated from each other under the action of the spring.
Optionally, the liquid filling nozzle comprises a connecting part and a tightening part, the diameter of the tightening part is smaller than that of the connecting part, the connecting part is in threaded connection with the inner wall of the through hole, the tightening part is positioned in the through hole, and a pressure relief hole communicated with the inner cavity of the liquid filling nozzle is formed in the tightening part.
Optionally, the rock mass excavating device further comprises a hollow connecting pipe sleeved on the outer wall of the liquid filling nozzle and a quick connector arranged at the end part of the hollow connecting pipe, wherein the quick connector is used for being connected with a carbon dioxide liquid filling machine, a connecting groove is formed in the pipe wall of the hollow connecting pipe, and the limiting pin is used for fixing the hollow connecting pipe on the liquid filling nozzle through the connecting groove.
Optionally, the outer wall of the tank body is provided with a mark corresponding to the cutting groove, and the mark is used for indicating the position of the cutting groove.
Optionally, a first O-ring is sleeved on the side wall of the positioning pin, the outer diameter of the first O-ring is larger than the diameter of the positioning hole, and the first O-ring abuts against the inner wall of the base.
Optionally, the top cover is provided with a wire guide hole, and wires of the excitation tube extend out of the tank body through the wire guide hole.
In another aspect of the embodiment of the present invention, a rock mass excavation method is provided, and the rock mass excavation device is adopted, and the method includes: constructing a row of holes on one side of the free face of the rock mass to be excavated; placing the rock mass excavating device into the drill hole, and enabling a cutting groove on the inner wall of a tank body of the rock mass excavating device to face the temporary surface; injecting liquid carbon dioxide into the tank body, sealing the drilling holes by using medium coarse sand, and vibrating for compaction; energizing an excitation tube of the rock mass excavation device to start the rock mass excavation device.
The beneficial effects of the embodiment of the invention include:
the rock mass excavating device provided by the embodiment of the invention comprises a tank body and an excitation pipe arranged in the tank body, wherein the inner wall of the tank body is provided with a cutting groove along the axial direction of the tank body, the tank body is used for storing liquid carbon dioxide, the excitation pipe is used for converting the liquid carbon dioxide into supercritical carbon dioxide in an electrified state, the tank body is also connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank body in a drilled hole. The excitation tube is arranged in the tank body, when the tank body is filled with liquid carbon dioxide, the excitation tube is soaked in the liquid carbon dioxide, the excitation tube can instantly generate high temperature (above 800 ℃) after being electrified to change the liquid carbon dioxide into supercritical carbon dioxide, and the process can generate high pressure in the tank body. Because the tank body inner wall is provided with the grooving, the strength of the tank body at the grooving is reduced due to the grooving, when the inside of the tank body is in a high-pressure state, the tank body can be broken at the grooving, supercritical carbon dioxide is quickly released from the tank body to impact the wall of a drilling hole, phase-change gasification occurs, the volume of the supercritical carbon dioxide instantaneously expands 600-700 times and acts on the rock mass around the drilling hole, and the rock mass is caused to be broken. The rock mass excavating device can directionally and centrally release energy, has higher safety and stronger rock breaking capacity, effectively improves the rock breaking efficiency, and can also reduce the damage to the reserved rock mass.
The positioning mechanism of the rock mass excavating device provided by the embodiment of the invention comprises the positioning pin on the base, when the tank body is filled with liquid carbon dioxide, the pressure of the carbon dioxide enables the positioning pin to extend out of the positioning hole to be in close contact with surrounding rock mass, so that the whole excavating device is prevented from flying out of a drilled hole when the tank body is broken, and safety accidents occur.
When the rock mass excavating device provided by the embodiment of the invention is used, the rock mass excavating device is firstly placed in a drill hole and then poured with liquid carbon dioxide, so that safety accidents such as accidental burst and the like in the transportation and installation processes of the device can be prevented.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a rock mass excavation apparatus provided by an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 at cross section A-A;
FIG. 3 is a partially enlarged schematic illustration of the tank of FIG. 2 at D;
FIG. 4 is a schematic view of the structure at section B-B in FIG. 1;
FIG. 5 is a schematic view of the structure of FIG. 1 at section C-C;
fig. 6 is a schematic structural view of a liquid filling nozzle in a rock mass excavation apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a hollow connecting pipe in a rock mass excavation apparatus according to an embodiment of the present invention;
FIG. 8 is one of the flowcharts of a rock mass excavation method provided by an embodiment of the present invention;
FIG. 9 is a second flow chart of a rock excavation method according to an embodiment of the present invention;
FIG. 10 is a third flow chart of a rock excavation method according to an embodiment of the present invention;
FIG. 11 is a flow chart of a rock mass excavation method provided by an embodiment of the present invention;
fig. 12 is a flowchart of a rock mass excavation method according to an embodiment of the present invention.
Icon: 10-a rock mass excavation device; 11-a tank body; 12-excitation tube; 13-grooving; 21-a base; 211-positioning holes; 22-locating pins; 221-a barrier; 222-a fixing part; 23-a first O-ring; 24-a second O-ring; 31-liquid filling nozzle; 311-connecting part; 312-tightening part; 313-pressure relief vent; 41-top cover; 411-through holes; 412-wire guides; 42-inner plugs; 421-deflector aperture; 43-ball valve; 44-springs; 45-spring seat; 51-hollow connection tube; 511-a connecting slot; 52-quick connector; 53-a third O-ring; 54-limit pins.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that the positional or positional relationship indicated by the terms such as "center", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. The terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 to 3, the present embodiment provides a rock excavating device 10, which includes a tank 11 and an excitation tube 12 disposed inside the tank 11, wherein a slot 13 is formed in an inner wall of the tank 11 along an axial direction of the tank 11, the tank 11 is used for storing liquid carbon dioxide, the excitation tube 12 is used for converting the liquid carbon dioxide into supercritical carbon dioxide in an energized state, the tank is further connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank in a drill hole.
The excitation tube 12 is disposed inside the tank 11, when the tank 11 is filled with liquid carbon dioxide, the excitation tube 12 is immersed in the liquid carbon dioxide, and the excitation tube 12 generates high temperature (above 800 ℃) instantly after being electrified to change the liquid carbon dioxide into supercritical carbon dioxide, and the process generates high pressure in the tank 11. Because the inner wall of the tank 11 is provided with the cutting groove 13, the strength of the tank 11 at the cutting groove 13 is reduced due to the existence of the cutting groove 13, when the inside of the tank 11 is in a high-pressure state, the tank 11 can be broken at the cutting groove 13, supercritical carbon dioxide is quickly released from the tank 11 to impact the wall of a drilling hole, phase-change gasification occurs, the volume of the supercritical carbon dioxide instantaneously expands 600-700 times and acts on surrounding rock bodies, and the rock bodies are cracked. The rock mass excavating device 10 can directionally and intensively release energy, effectively improve the rock breaking efficiency, reduce the damage to the rock mass to be reserved, and solve the technical problem of insufficient rock breaking capacity caused by small energy in the carbon dioxide phase change breaking technology in the prior art. The setting of positioning mechanism can fix the jar body in the drilling, prevents that whole excavating gear from flying out outside the drilling when jar body breaks, appears the incident.
In the present embodiment, the can 11 is a hollow case, the shape and size of which are not limited, and the slit 13 is provided on the inner wall of the can 11 and extends in the axial direction of the can 11. The depth, length and cross-sectional shape of the slit 13 are not limited as long as the seal of the can 11 itself is not broken and the strength of the can 11 at the slit 13 can be reduced. It should be understood that the depth of the slot 13 is too shallow, which cannot obviously reduce the strength of the tank 11 at the slot 13, and cannot ensure that the energy is directionally and intensively released, and the depth of the slot 13 is too deep, which can cause the strength of the tank 11 at the slot 13 to be too low, so that the energy is released in advance before the energy in the tank 11 is accumulated, and the rock breaking effect is not good, so that reasonable selection can be performed according to the rock breaking efficiency. The length and position of the slot 13 can be reasonably selected according to the position and area of the broken rock. Illustratively, the depth of the slot 13 is 1/5 of the wall thickness of the can 11, the length is 1/3 of the length of the can 11, and the starting position is 1/3 of the length of the inner wall of the can 11. The notch 13 is provided to reduce the strength of the can 11, and may have a V-shape, a square shape, a semicircular shape, or the like in cross section, as long as the function thereof is achieved.
The excitation tube 12 is a device for converting liquid carbon dioxide into supercritical carbon dioxide, and the specific structure and composition thereof are not limited. Illustratively, the excitation tube 12 includes a tube body, a medicament sealed in the tube body, and a wire with one end immersed in the medicament, wherein the wire excites the medicament in the tube 12 after being electrified, and the heat released by chemical reaction of the medicament changes the liquid carbon dioxide to supercritical carbon dioxide at a temperature higher than the phase transition temperature of 31.4 ℃ and generates a peak pressure of 200MPa or more.
To sum up, the rock mass excavation device 10 includes a tank 11 and an excitation tube 12 disposed inside the tank 11, a slot 13 is formed in an inner wall of the tank 11 along an axial direction of the tank 11, the tank 11 is used for storing liquid carbon dioxide, the excitation tube 12 is used for converting the liquid carbon dioxide into supercritical carbon dioxide in an electrified state, the tank is further connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank in a drill hole. The rock mass excavating device 10 can directionally and intensively release energy, has higher safety and stronger rock breaking capacity, can effectively improve the rock breaking efficiency and can reduce the damage to the reserved rock mass.
Optionally, the outer wall of the can 11 is provided with a marking corresponding to the slit 13, the marking indicating the position of the slit 13.
The incision 13 is arranged in the tank 11, and if the tank 11 is made of a non-transparent material, in the use process, a technician cannot identify the position of the incision 13 from the outside of the tank 11, and thus cannot determine where the energy of the rock mass excavating device 10 will be released. Therefore, the mark corresponding to the cutting groove 13 is arranged on the outer wall of the tank 11, the mark can indicate the position of the cutting groove 13 (can be the starting position and the ending position of the cutting groove 13 or the setting position of the cutting groove 13 in the circumferential direction of the tank 11), and when the rock mass excavating device 10 is pre-buried, a technician can release the mark to the empty face of the excavated rock mass, thereby ensuring the energy to the empty face, guaranteeing the rock breaking effect and improving the rock breaking efficiency.
Referring to fig. 1 and 4, optionally, the positioning mechanism includes a base 21 communicating with the inner cavity of the tank 11 through the bottom of the tank 11 and a positioning pin 22 disposed on the base 21, a positioning hole 211 is disposed on a sidewall of the base 21, the bottom of the positioning pin 22 extends into the positioning hole 211 and seals the positioning hole 211, and the diameter of the top of the positioning pin 22 is larger than the diameter of the positioning hole 211 to prevent the positioning pin 22 from being separated from the base 21.
The bottom of jar body 11 is equipped with the opening, and base 21 is open-top and inside has the structure that holds the chamber, holds the intracavity and is equipped with locating pin 22, and locating pin 22 is the big structure in bottom little top, and the bottom of locating pin 22 can stretch into and stretch out locating hole 211, the top can't stretch out locating hole 211 and can support with base 21 inner wall. Illustratively, the positioning pin 22 is T-shaped and includes a blocking portion 221 and a fixing portion 222 that are vertically connected, the fixing portion 222 is a cylinder with a diameter smaller than or equal to the positioning hole 211 and extends into the positioning hole 211, and the blocking portion 221 is a cylinder with a diameter larger than the positioning hole 211.
The base 21 is communicated with the tank 11, and liquid carbon dioxide in the tank 11 automatically flows into the base 21. Before filling the inside of the tank 11 with liquid carbon dioxide, the bottom of the positioning pin 22 is located inside the positioning hole 211, so that the positioning hole 211 is not sealed, but does not extend out of the outer wall of the base 21, preferably, the bottom surface of the positioning pin 22 is circular arc-shaped and is flush with the outer wall of the base 21 before filling. After filling liquid carbon dioxide to the inside of the tank 11, the liquid carbon dioxide can push the top of the locating pin 22, and under the action of the liquid carbon dioxide, the locating pin 22 stretches out of the base 21 from the locating hole 211 at the bottom and is inserted into the hole wall of the hole for placing the rock mass excavating device 10, so that the rock mass excavating device 10 is fixed, the rock mass excavating device 10 can be effectively prevented from punching out of the hole, a pipe flying accident occurs, and therefore the safety of a construction process can be obviously improved.
In the present embodiment, the connection between the base 21 and the can 11 is not limited, and the base 21 and the can 11 are connected by welding or by bonding, for example.
In order to prevent the positioning pin 22 from extending out of the positioning hole 211 before the rock mass excavating device 10 is put into a drill hole, optionally, a first O-ring 23 is sleeved on the side wall of the positioning pin 22, the outer diameter of the first O-ring 23 is larger than the diameter of the positioning hole 211, and the first O-ring 23 abuts against the inner wall of the base 21.
The first O-ring 23 is sleeved on the side wall of the positioning pin 22, the first O-ring 23 is fixed on the inner wall of the base 21, and when the positioning pin 22 has a tendency of extending out of the positioning hole 211, the inner ring of the positioning pin can apply a friction force opposite to the movement direction of the positioning pin 22 to the positioning pin 22 so as to prevent the positioning pin 22 from shifting before filling liquid and extending into or extending out of the base 21 by mistake. It should be appreciated that the first O-ring 23 generates relatively small friction force on the positioning pin 22, which can only prevent the positioning pin 22 from being displaced before filling, but cannot prevent the positioning pin 22 from extending out of the positioning hole 211 under the action of liquid carbon dioxide after filling. Meanwhile, the first O-shaped ring 23 can seal the gap between the bottom of the positioning pin 22 and the positioning hole 211, so that leakage of liquid carbon dioxide is prevented.
To further prevent leakage of liquid carbon dioxide, optionally, the bottom of the positioning pin 22 is sleeved with a second O-ring 24, and the second O-ring 24 is located between the bottom of the positioning pin 22 and the positioning hole 211 to seal a gap therebetween. The number of the second O-rings 24 may be plural, and the plurality of second O-rings 24 are sleeved at the bottom of the positioning pin 22 at intervals.
Referring to fig. 1, optionally, the rock mass excavation apparatus 10 further includes a charging nozzle 31 in communication with the interior of the tank 11, the charging nozzle 31 being configured to charge the interior of the tank 11 with liquid carbon dioxide.
The charging nozzle 31 should have a structure with a passage, and the passage of the charging nozzle 31 communicates the inner cavity of the tank 11 with the outside so that liquid carbon dioxide enters the inside of the tank 11 through the charging nozzle 31.
Referring to fig. 1 and 5, optionally, the rock mass excavation device 10 further includes a top cover 41 connected to the top of the tank body 11, an inner plug 42, a ball valve 43 and a spring 44, wherein the inner plug 42, the ball valve 43 and the spring 44 are disposed in the top cover 41, a through hole 411 is disposed on the top cover 41, a large diameter end of the through hole 411 faces the tank body 11, the inner plug 42 is disposed at a large diameter end of the through hole 411, a diversion hole 421 is disposed on the inner plug 42, the diversion hole 421 communicates the through hole 411 with the tank body 11, the liquid filling nozzle 31 is disposed at a small diameter end of the through hole 411, one end of the spring 44 is connected with the inner plug 42, the other end of the spring 44 is connected with the ball valve 43, and the ball valve 43 divides the through hole 411 into two parts isolated from each other under the action of the spring 44.
The top of the tank 11 is opened and connected to the top cover 41, the filling nozzle 31 is provided on the top cover 41, and the tank 11 communicates with the outside through the top cover 41 and the filling nozzle 31. Optionally, the charging spout 31 is threadably connected to the cap 41. The through hole 411 is a hole with a variable diameter and penetrates through the upper side and the lower side of the top cover 41, the ball valve 43 is clamped in the through hole 411 under the action of the elastic force of the spring 44, the through hole 411 is divided into two parts which are isolated from each other, a first space is formed between the ball valve 43 and the small diameter end of the through hole 411, a second space is formed between the ball valve 43 and the large diameter end of the through hole 411, the liquid filling nozzle 31 is arranged in the first space, and the inner plug 42, the ball valve 43 and the spring 44 are arranged in the second space.
During filling, liquid carbon dioxide enters the first space through the filling nozzle 31, pushes the ball valve 43 to move towards the direction of the spring 44, enables the first space to be communicated with the second space, and enters the second space and then enters the tank 11 through the flow guide hole 421 on the inner plug 42. Normally, after the tank 11 is blasted, all the liquid carbon dioxide in the tank 11 is released, but under the condition that the excitation tube 12 fails, the tank 11 may not be blasted, at this time, the rock excavating device 10 becomes a pressure vessel with potential safety hazard, and the liquid carbon dioxide in the tank 11 needs to be released to avoid the safety accident. By pressing the ball valve 43, the ball valve 43 moves toward the spring 44, so that the first space and the second space can be communicated again, and the liquid carbon dioxide in the tank 11 can return to the second space again through the diversion hole 421 on the inner plug 42, then enter the first space again, and finally flow out through the filling nozzle 31.
Through the cooperation of the ball valve 43, the spring 44 and the through hole 411, the liquid carbon dioxide can enter and exit the tank 11 in a bidirectional manner, and the liquid carbon dioxide in the tank 11 can be released safely and rapidly under the extreme condition that the excitation tube 12 fails.
In the present embodiment, the shape of the through hole 411 is not limited as long as the through hole 411 is of a variable diameter and the ball valve 43 can be ensured to be separated into two parts isolated from each other when being stuck inside the through hole 411. Illustratively, the through hole 411 includes a first cylindrical hole, a tapered hole, and a second cylindrical hole, the first cylindrical hole is in communication with the small diameter end of the tapered hole, the second cylindrical hole is in communication with the large diameter end of the tapered hole, the diameter of the first cylindrical hole is equal to the diameter of the small diameter end of the tapered hole, and the diameter of the second cylindrical hole is equal to the diameter of the large diameter end of the tapered hole. The outer wall of the liquid filling nozzle 31 is cylindrical and is connected with the top cover 41 through threaded fit with the first cylindrical hole, and the outer wall of the inner plug 42 is cylindrical and is arranged in the second cylindrical hole and is in threaded connection with the second cylindrical hole. The ball valve 43 is caught at the junction of the first cylindrical hole and the tapered hole when being only subjected to gravity and the force of the spring 44, isolating the first cylindrical hole from the tapered hole and the second cylindrical hole, and at this time, the first cylindrical hole constitutes a first space, and the tapered hole and the second cylindrical hole constitute a second space.
In order to facilitate the fixing and limiting of the spring 44, optionally, the rock mass excavation device 10 further includes a spring seat 45, a groove is formed in a side, facing the ball valve 43, of the inner plug 42, the groove is used for accommodating the spring seat 45, the spring 44 is arranged in an inner cavity of the spring seat 45, and the spring 44 is limited by the inner wall of the spring seat 45 in the extending and compressing process and cannot be distorted.
Referring to fig. 1 and 6, alternatively, the charging nozzle 31 includes a connection portion 311 and a tightening portion 312, the diameter of the tightening portion 312 is smaller than that of the connection portion 311, the connection portion 311 is in threaded connection with the inner wall of the through hole 411, the tightening portion 312 is located inside the through hole 411, and a pressure release hole 313 communicating with the inner cavity of the charging nozzle 31 is provided on the tightening portion 312.
In the case of failure of the trigger tube 12, the ball valve 43 needs to be pressed to release the liquid carbon dioxide in the tank 11, the connecting portion 311 of the charging nozzle 31 is in threaded connection with the inner wall of the through hole 411, and the charging nozzle 31 can be moved downwards relative to the through hole 411 by rotating the charging nozzle 31, so that the ball valve 43 is pressed to move towards the direction of the spring 44, and the first space and the second space are communicated. The tightening part 312 of the charging nozzle 31 is smaller than the diameter of the through hole 411, and a gap exists between the tightening part and the through hole 411, so that the liquid carbon dioxide can be released after flowing out of the charging nozzle 31 through the gap and the pressure release hole 313. The number of the pressure release holes 313 may be plural and may be uniformly provided on the side wall of the tightening part 312 of the charging nozzle 31.
Optionally, the top cover 41 is provided with a wire guide 412, and the wires of the excitation tube 12 extend outside the can 11 through the wire guide 412.
The excitation tube 12 is arranged in the tank 11, the opening of the tank 11 is sealed by the top cover 41, according to the working principle of the excitation tube 12, an external control device is required to start the excitation tube 12 through a wire, a wire hole 412 is arranged on the top cover 41, and the wire of the excitation tube 12 in the tank 11 is led out, so that the control is convenient.
It should be understood that the excitation tube 12 may be disposed at any location within the tank 11 so long as it is capable of sufficiently exciting the liquid carbon dioxide within the tank 11. Illustratively, the trigger tube 12 is connected to the inner plug 42 by screws, or the trigger tube 12 is connected to a spring seat 45 provided on the inner plug 42 by screws, so that the trigger tube 12 opens into the top cover 41 as much as possible, reducing the length of the wire.
Referring to fig. 1 and 7, the rock mass excavating device 10 needs to be pre-buried in a drill hole in the use process, in order to facilitate filling the well-placed rock mass excavating device 10, optionally, the rock mass excavating device 10 further includes a hollow connecting pipe 51 sleeved on the outer wall of the filling nozzle 31 and a quick connector 52 arranged at the end of the hollow connecting pipe 51, the quick connector 52 is used for being connected with a carbon dioxide filling machine, a connecting groove 511 is arranged on the pipe wall of the hollow connecting pipe 51, and a limiting pin 54 fixes the hollow connecting pipe 51 on the filling nozzle 31 through the connecting groove 511.
The quick connector 52 is used for connecting with a carbon dioxide filling machine, and the corresponding quick connector 52 can be matched according to different specifications of the carbon dioxide filling machine. The hollow connecting tube 51 then connects the quick connector 52 with the filling nozzle 31. In order to facilitate connection and disassembly between the hollow connecting pipe 51 and the liquid filling nozzle 31, a connecting groove 511 is formed in the outer wall of the hollow connecting pipe 51, then a limiting pin 54 is inserted into the connecting groove 511 and rotated to be abutted against the liquid filling nozzle 31, and fixation between the hollow connecting pipe 51 and the liquid filling nozzle 31 is achieved.
The arrangement of the hollow connecting pipe 51 and the quick connector 52 ensures that the rock mass excavating device 10 does not need to be filled with liquid carbon dioxide before being used, but only starts to be filled with the liquid carbon dioxide after the rock mass excavating device 10 is put into a drilling hole during use, so that the safety problem caused by unexpected burst of the tank 11 can be effectively avoided.
Alternatively, the connecting groove 511 is L-shaped and includes a first vertical portion, a horizontal portion, and a second vertical portion that are sequentially connected, and the first vertical portion and the second vertical portion are disposed on the same side of the horizontal portion and are parallel to each other and face the bottom of the hollow connecting pipe 51. Illustratively, the connection groove 511 includes two symmetrically disposed at the bottom of the hollow connection pipe 51. After filling, the hollow connecting pipe 51 is pushed downwards, then the hollow connecting pipe 51 is rotated, and the hollow connecting pipe 51 is lifted upwards, so that the hollow connecting pipe 51 and the filling nozzle 31 can be separated.
Optionally, a third O-ring 53 is provided between the charging nozzle 31 and the hollow connection tube 51, and the third O-ring 53 seals the gap between the charging nozzle 31 and the hollow connection tube 51 to prevent leakage of liquid carbon dioxide. The number of the third O-rings 53 may be plural, and the plurality of the third O-rings 53 are disposed at intervals along the axial direction of the hollow connection pipe 51.
Optionally, the outer wall of the hollow connecting rod is provided with a mark corresponding to the cutting groove 13, and the mark is used for indicating the position of the cutting groove 13. The presence of the marker may indicate to the technician the orientation of the internal slot 13 of the can 11 pre-buried in the borehole.
Referring to fig. 8, the present embodiment further provides a rock mass excavation method, using the rock mass excavation apparatus 10, the method including:
s100: and constructing a row of holes on one side of the free face of the rock mass to be excavated.
S200: and placing the rock mass excavating device into the drill hole, and enabling the cutting groove on the inner wall of the tank body of the rock mass excavating device to face the temporary surface.
S300: and injecting liquid carbon dioxide into the tank body, sealing the drilling holes by using medium coarse sand, and vibrating for compaction.
S400: energizing an excitation tube of the rock mass excavation device to start the rock mass excavation device.
The rock mass excavation method adopts the rock mass excavation device capable of directionally releasing energy, so that the energy acts on the empty face of the rock mass in a directional and concentrated way, the rock breaking efficiency is effectively improved, and the damage to the rock mass to be reserved can be reduced.
Referring to fig. 9, for example, the placing the rock mass excavation apparatus into the borehole and making the slot of the inner wall of the tank of the rock mass excavation apparatus face the free surface includes:
s210: and placing the rock mass excavating device into the drill hole.
S220: the hollow connecting rod of the rock mass excavating device is adjusted to enable the mark on the hollow connecting rod to be positioned on the vertical line of the empty face.
Referring to fig. 10, for example, the injection of liquid carbon dioxide into the tank, sealing and vibrating the drill hole with medium coarse sand includes:
s310: connecting a quick connector of the rock mass excavating device with a carbon dioxide liquid filling machine, and starting the carbon dioxide liquid filling machine to fill liquid into the tank body until the inside of the tank body reaches a preset pressure.
S320: pushing down the hollow connecting rod, rotating the hollow connecting rod, and pulling up the hollow connecting rod.
S330: and filling the drilling holes with medium coarse sand, and vibrating and compacting the medium coarse sand in the drilling holes.
Referring to fig. 11, for example, the energizing the excitation tube of the rock excavation apparatus to start the rock excavation apparatus includes:
s410: connecting a lead of the excitation tube with a control device;
s420: and starting the control device to crack the rock mass.
Referring to fig. 12, illustratively, after activating the activation tube of the rock mass excavation apparatus to activate the rock mass excavation apparatus, the method further comprises:
s500: and (3) checking the tank body, rotating a liquid filling nozzle of the rock excavating device with the complete tank body, and releasing the liquid carbon dioxide in the complete tank body.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The rock mass excavating device is characterized by comprising a tank body and an excitation pipe arranged in the tank body, wherein a cutting groove is formed in the inner wall of the tank body along the axial direction of the tank body, the tank body is used for storing liquid carbon dioxide, the excitation pipe is used for converting the liquid carbon dioxide into supercritical carbon dioxide in an electrified state, the tank body is further connected with a positioning mechanism, and the positioning mechanism is used for fixing the tank body in a drilling hole;
the positioning mechanism comprises a base and a positioning pin, wherein the base is communicated with the inner cavity of the tank body through the bottom of the tank body, the positioning pin is arranged on the base, a positioning hole is formed in the side wall of the base, the bottom of the positioning pin stretches into the positioning hole and seals the positioning hole, and the diameter of the top of the positioning pin is larger than that of the positioning hole so as to prevent the positioning pin from being separated from the base;
the liquid filling nozzle is communicated with the inside of the tank body and is used for filling the liquid carbon dioxide into the tank body;
the novel water tank is characterized by further comprising a top cover connected with the top of the tank body, an inner plug, a ball valve and a spring, wherein the inner plug, the ball valve and the spring are arranged in the top cover, the top cover is provided with a through hole, the large-diameter end of the through hole faces the tank body, the inner plug is arranged at the large-diameter end of the through hole, the inner plug is provided with a diversion hole, the diversion hole is used for communicating the through hole with the tank body, the liquid filling nozzle is arranged at the small-diameter end of the through hole, one end of the spring is connected with the inner plug, the other end of the spring is connected with the ball valve, and the ball valve divides the through hole into two parts which are isolated from each other under the action of the spring;
the liquid filling nozzle comprises a connecting part and a tightening part, the diameter of the tightening part is smaller than that of the connecting part, the connecting part is in threaded connection with the inner wall of the through hole, the tightening part is positioned in the through hole, and a pressure relief hole communicated with the inner cavity of the liquid filling nozzle is formed in the tightening part.
2. The rock mass excavating device according to claim 1, further comprising a hollow connecting pipe sleeved on the outer wall of the liquid filling nozzle and a quick connector arranged at the end part of the hollow connecting pipe, wherein the quick connector is used for being connected with a carbon dioxide liquid filling machine, a connecting groove is formed in the pipe wall of the hollow connecting pipe, and the hollow connecting pipe is fixed on the liquid filling nozzle through the connecting groove by a limiting pin.
3. A rock mass excavation apparatus as claimed in claim 1, wherein the outer wall of the tank is provided with indicia corresponding to the slots, the indicia being for indicating the location of the slots.
4. The rock mass excavation apparatus of claim 1, wherein a first O-ring is provided on a side wall of the positioning pin, an outer diameter of the first O-ring is larger than a diameter of the positioning hole, and the first O-ring abuts against an inner wall of the base.
5. A rock mass excavation apparatus as claimed in claim 1, wherein the top cover is provided with a wire guide through which the wire of the excitation tube extends outside the tank.
6. A rock mass excavation method using the rock mass excavation apparatus as claimed in any one of claims 1 to 5, the method comprising:
constructing a row of holes on one side of the free face of the rock mass to be excavated;
placing the rock mass excavating device into the drill hole, and enabling a cutting groove on the inner wall of a tank body of the rock mass excavating device to face the free surface;
injecting liquid carbon dioxide into the tank body, sealing the drilling holes by using medium coarse sand, and vibrating for compaction;
and electrifying an excitation pipe for exciting the rock mass excavating device so as to start the rock mass excavating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072094.3A CN112833715B (en) | 2021-01-19 | 2021-01-19 | Rock mass excavation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110072094.3A CN112833715B (en) | 2021-01-19 | 2021-01-19 | Rock mass excavation device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112833715A CN112833715A (en) | 2021-05-25 |
| CN112833715B true CN112833715B (en) | 2023-06-23 |
Family
ID=75928887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110072094.3A Active CN112833715B (en) | 2021-01-19 | 2021-01-19 | Rock mass excavation device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112833715B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3117969B1 (en) * | 1999-11-29 | 2000-12-18 | 株式会社神島組 | Split rock device and centering method using the device |
| CN1727637A (en) * | 2005-05-30 | 2006-02-01 | 马鞍山市惊天液压机械制造有限公司 | Rock splitter in use for non-blasting mining and tunnecting |
| KR20140074488A (en) * | 2012-12-10 | 2014-06-18 | 주식회사 뮤소리 | Jack for crushing rock |
| CN107237633A (en) * | 2017-07-26 | 2017-10-10 | 赵东 | Carbon dioxide fracturing device and the method using carbon dioxide fracturing device broken rock |
| CN110260720A (en) * | 2019-05-28 | 2019-09-20 | 安徽江南爆破工程有限公司 | Convenient for the carbon dioxide fracturing device of conveying |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
| CN110894790A (en) * | 2018-09-13 | 2020-03-20 | 方莹 | Internal inflation gas cracking tube |
-
2021
- 2021-01-19 CN CN202110072094.3A patent/CN112833715B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3117969B1 (en) * | 1999-11-29 | 2000-12-18 | 株式会社神島組 | Split rock device and centering method using the device |
| CN1727637A (en) * | 2005-05-30 | 2006-02-01 | 马鞍山市惊天液压机械制造有限公司 | Rock splitter in use for non-blasting mining and tunnecting |
| KR20140074488A (en) * | 2012-12-10 | 2014-06-18 | 주식회사 뮤소리 | Jack for crushing rock |
| CN107237633A (en) * | 2017-07-26 | 2017-10-10 | 赵东 | Carbon dioxide fracturing device and the method using carbon dioxide fracturing device broken rock |
| CN110894790A (en) * | 2018-09-13 | 2020-03-20 | 方莹 | Internal inflation gas cracking tube |
| CN110260720A (en) * | 2019-05-28 | 2019-09-20 | 安徽江南爆破工程有限公司 | Convenient for the carbon dioxide fracturing device of conveying |
| CN110793403A (en) * | 2019-11-19 | 2020-02-14 | 中交第二公路勘察设计研究院有限公司 | Novel high-efficient carbon dioxide phase transition send and splits ware |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112833715A (en) | 2021-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2494256A (en) | Apparatus for perforating well casings and well walls | |
| EP2276907B1 (en) | Plug construction comprising a hydraulic crushing body | |
| WO2009116871A1 (en) | Device of a plug for well testing | |
| US20080156482A1 (en) | Method for the Treatment of the Obstructed Zones of the Parent Rock of Hydrocarbon-Producing Strata Adjacent to a Gas and Oil Well Drilling Zone in Order to Increase Productivity | |
| US3245472A (en) | Duct-forming devices | |
| NO312213B1 (en) | Apparatus for use in a pipe string in a well for igniting a charge in a perforating gun | |
| US3797576A (en) | Method and apparatus for breaking up rocks containing liquid or gaseous hydrocarbons by means of explosives | |
| EP2147188B1 (en) | Device of a test plug | |
| EA002681B1 (en) | Apparatus and method for perforating and stimulating a subterranean formation | |
| GB2366578A (en) | Cement lining a wellbore having sensors therein | |
| NO318134B1 (en) | Method, apparatus and equipment for perforation and stimulation of an underground formation | |
| KR101319736B1 (en) | Structure for underwater blasting and blasting method therewith | |
| US11332991B2 (en) | Targeted downhole delivery with container | |
| AU1957400A (en) | Small charge blasting apparatus including device for sealing pressurized fluids in holes | |
| US2583965A (en) | Submarine anchorage | |
| CN112833715B (en) | Rock mass excavation device and method | |
| CN110926293A (en) | Instant cracking device capable of crushing one surface and completing one surface | |
| RU2685012C1 (en) | Device for excited detonation in wall cumulative perforators | |
| RU2519318C1 (en) | Rock destruction device | |
| KR102288035B1 (en) | Rock blasting method using a connected paper pipe | |
| CN214276686U (en) | Rock mass excavation device | |
| US3191678A (en) | Method and apparatus for treating an earth formation penetrated by a well | |
| EP0108519A2 (en) | Method and apparatus for fracturing rock | |
| US2214227A (en) | Method and apparatus for securing objects in wells | |
| US3447605A (en) | Method of sealing boreholes and apparatus therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |