CN111578800A - Rapid blasting drilling method - Google Patents
Rapid blasting drilling method Download PDFInfo
- Publication number
- CN111578800A CN111578800A CN202010460989.XA CN202010460989A CN111578800A CN 111578800 A CN111578800 A CN 111578800A CN 202010460989 A CN202010460989 A CN 202010460989A CN 111578800 A CN111578800 A CN 111578800A
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- CN
- China
- Prior art keywords
- mud
- sand
- rock drilling
- pipe body
- guide pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D3/00—Particular applications of blasting techniques
- F42D3/04—Particular applications of blasting techniques for rock blasting
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/36—Percussion drill bits
- E21B10/38—Percussion drill bits characterised by conduits or nozzles for drilling fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
- F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
- F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
Abstract
The invention provides a rapid blasting drilling method, which comprises the following steps of S1, injecting mud into the front end and the rear end of an initiation section along the rock drilling direction through a rapid blasting device, and respectively forming a front mud column and a rear mud column; s2, injecting blasting powder between the front mud column and the rear mud column through a quick blasting device; s3, simultaneously injecting sand to the front end of the front mud column along the rock drilling direction and the rear end of the rear mud column along the rock drilling direction through a quick blasting device to respectively form a front sand section and a rear sand section; and S4, igniting the blasting charge through a quick blasting device, and blasting. The explosive can be filled with liquid explosive for blasting, the blasting effect is good, blasting and rock drilling can be simultaneously carried out, the explosive can be continuously filled without taking out a drill bit, and the drilling efficiency is high.
Description
Technical Field
The invention relates to a drilling method, in particular to a rapid blasting drilling method.
Background
At present, in the construction operation of tunnel engineering such as railways, highways, subways, drilling mountains and the like, two tunneling modes of artificial blasting type excavation and automatic rotary cutting type construction are commonly used. In the manual blasting mode, the excavated rock is drilled, filled with solid explosive for blasting, and then slag is removed and the next construction is carried out; and the automatic rotary drilling adopts a chipping type arched cutter, and the physical cutting is carried out through the rotation of the chipping type arched cutter. Both of the above two methods are inefficient in construction. The former is blasting but only manual excavation; the latter is automated but uses physical cutting, the effect of which is not comparable to blasting.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rapid blasting drilling method, which can be filled with liquid explosives for blasting, has good blasting effect, can perform blasting and rock drilling simultaneously, can continue to fill the explosives without taking out a drill bit and has high drilling efficiency.
In order to solve the technical problem, the rapid blasting drilling method of the invention comprises the following steps:
s1, the front and rear ends of the detonation section in the rock drilling direction are simultaneously injected with mud by the rapid blasting device to form a front mud column and a rear mud column, respectively.
And S2, injecting blasting powder between the front mud column and the rear mud column through a quick blasting device.
S3, simultaneously sand-injecting the front end of the front mud column in the rock drilling direction and the rear end of the rear mud column in the rock drilling direction by a rapid blasting device to form a front sand section and a rear sand section, respectively.
And S4, igniting the blasting charge through a quick blasting device, and blasting.
The quick blasting device comprises a guide pipe body, and the guide pipe body is provided with a powder injection hole along the outer side wall of the rear part of the rock drilling direction.
And a medicine injection channel is formed in the flow guide pipe body along the length direction.
The medicine injection channel is communicated with the medicine injection hole.
The outer wall of the front part of the flow guide pipe body in the rock drilling direction is provided with a front plugging ring.
The outer wall of the rear part of the flow guide pipe body in the rock drilling direction is provided with a rear liquid sealing ring.
The injection hole is located at the front end of the rear liquid seal ring in the rock drilling direction.
The front mud injection hole is formed in the outer side wall of the front part of the flow guide pipe body in the rock drilling direction.
And a front mud injection channel is formed in the flow guide pipe body along the length direction.
The front mud injection channel is communicated with the front mud injection hole.
The front sand injection hole is formed in the outer side wall of the front part of the flow guide pipe body in the rock drilling direction.
And a front sand injection channel is formed in the flow guide pipe body along the length direction.
The front sand injection channel is communicated with the front sand injection hole.
The front sand injection hole is located at the front end of the front mud injection hole in the rock drilling direction.
And a front mud pump is arranged in the front mud injection channel.
And a front sand pump is arranged in the front sand injection channel.
The rear mud injection hole is formed in the outer side wall of the rear portion of the flow guide pipe body in the rock drilling direction.
And a rear mud injection channel is formed in the flow guide pipe body along the length direction.
And the rear mud injection channel is communicated with the rear mud injection hole.
The rear sand injection hole is formed in the outer side wall of the rear portion of the flow guide pipe body in the rock drilling direction.
And a rear sand injection channel is formed in the flow guide pipe body along the length direction.
The back sand injection channel is communicated with the back sand injection hole.
The rear sand injection hole is located at the rear end of the rear mud injection hole in the rock drilling direction.
The drug injection hole is located at the front end of the rear mud injection hole in the rock drilling direction.
And a rear mud pump is arranged in the rear mud injection channel.
And a back sand pump is arranged in the back sand injection channel.
The outer wall of the front part of the flow guide pipe body in the rock drilling direction is provided with a front liquid sealing ring.
The front plugging ring is located at the front end of the front sand injection hole in the rock drilling direction.
The front liquid-sealing ring is located at the rear end of the front mud injection hole in the rock drilling direction.
The rear part of the flow guide pipe body along the rock drilling direction is provided with a medicine injection mechanism.
The injection mechanism is located at the rear end of the rear liquid-sealing ring in the rock drilling direction.
And the outer side wall of the middle part of the flow guide pipe body in the rock drilling direction is provided with an ignition hole.
An ignition channel is formed in the flow guide pipe body along the length direction.
An ignition wire is arranged in the ignition channel.
The ignition wire is communicated with the ignition hole.
The ignition wire is connected with a detonating device at the rear part along the rock drilling direction.
In S1, the step of forming the front and rear mud columns includes:
and S11, injecting mud into the front mud injection channel and the rear mud injection channel respectively, rotating the flow guide pipe body simultaneously, and enabling mud to flow out of the front mud injection hole and the rear mud injection hole respectively.
And S12, starting the front mud pump to absorb the mud, opening the front liquid sealing ring, and respectively forming a front mud column and a rear mud column between the guide pipe body and the side wall of the rock drilling stratum, wherein the front mud column is positioned at the rear end of the front liquid sealing ring in the rock drilling direction.
In S2, the step of injecting the blasting agent includes:
and S21, starting the explosive injection mechanism, opening the rear liquid sealing ring, injecting explosive into the explosive injection channel, wherein the explosive flows out from the explosive injection holes, and liquid medicine sections are formed between the diversion pipe body and the side wall of the rock drilling stratum and between the front mud column and the rear mud column.
And S22, starting the rear mud pump, and pushing the rear mud column to abut against the blasting powder.
In S3, the step of forming the front sand section and the rear sand section includes:
s31, injecting sand into the front sand injection passage and the rear sand injection passage, respectively, while rotating the guide pipe body, the sand body flowing out from the front sand injection hole and the rear sand injection hole, respectively, and forming a front sand section and a rear sand section between the guide pipe body and the side wall of the rock formation, at the front end of the front mud column in the rock drilling direction, and at the rear end of the rear mud column in the rock drilling direction, respectively.
And S32, starting the front sand pump, opening the front liquid sealing ring, and sucking the front sand section to be abutted against the front mud column.
And S33, starting the rear sand pump, and pushing the rear sand section to be abutted against the rear mud column.
In S4, the igniting step includes closing the rear liquid-sealing ring, activating the initiating device, and igniting the blasting charge through the ignition wire.
Drawings
The rapid blast drilling method according to the present invention will be described in further detail with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic structural diagram of a rapid blasting device of the rapid blasting drilling method of the present invention.
Fig. 2 is a schematic diagram of the end face of the impact end of the pneumatic percussion bit of the rapid blasting device rapid blasting drilling method of the invention.
Fig. 3 is a schematic diagram of a side view structure of a pneumatic percussion bit of the rapid blasting device of the rapid blasting drilling method of the present invention.
Fig. 4 is a schematic structural diagram of a pneumatic-hydraulic combined percussion bit of the rapid blasting device of the rapid blasting drilling method of the present invention.
In the figure: 1-a drill bit body; 101-impact teeth; 102-primary side impact teeth; 103-secondary side impact teeth; 104-an intake passage; 105-a slag discharge groove; 11-a secondary drill bit; 111-secondary intake passage; 112-auxiliary slag discharge groove; 2-a flow guide pipe body; 201-medicine injection hole; 202-injecting mud holes behind the draft tube; 203-sand injection holes behind the flow guide pipe; 204-liquid sealing ring in front of the draft tube; 205-sand injection holes in front of the draft tube; 206-a front plugging ring of the draft tube; 207-liquid sealing ring behind the draft tube; 208-a mud injection hole in front of the draft tube; 209-a drug injection mechanism; 210-medicine injection switch; 211-ignition hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
One embodiment of the present invention is shown in fig. 1, and this embodiment provides a rapid blasting drilling method and a rapid blasting device thereof, where a guide pipe body 2 is connected to a rear end of a drill bit body 1.
The guide pipe body 2 is provided with a medicine injection hole 201 along the outer side wall of the rear part of the rock drilling direction.
And a medicine injection channel is formed in the flow guide pipe body 2 along the length direction.
The drug injection channel is communicated with the drug injection hole 201.
The outer wall of the guide tube body 2 in front of the rock drilling direction is provided with a guide tube front plugging ring 206.
The outer wall of the guide pipe body 2 at the rear part along the rock drilling direction is provided with a guide pipe rear liquid sealing ring 207.
The injection hole 201 is located at the front end of the rear liquid-tight ring 207 of the guide tube in the rock drilling direction.
The guide pipe body 2 is provided with a guide pipe front mud injection hole 208 along the front outer side wall of the rock drilling direction.
And a front mud injection channel is formed in the diversion pipe body 2 along the length direction.
The front mud injection passage is communicated with the front mud injection hole 208 of the draft tube.
The guide pipe body 2 is provided with a guide pipe front sand injection hole 205 along the front outer side wall of the rock drilling direction.
And a front sand injection channel is arranged in the flow guide pipe body 2 along the length direction.
The front sand injection passage is communicated with the front sand injection hole 205 of the draft tube.
The nozzle front sand injection hole 205 is located at the front end of the nozzle front mud injection hole 208 in the rock drilling direction.
And a front mud pump is arranged in the front mud injection channel.
And a front sand pump is arranged in the front sand injection channel.
The guide pipe body 2 is provided with a guide pipe rear mud injection hole 202 along the outer side wall of the rear part of the rock drilling direction.
And a rear mud injection channel is formed in the diversion pipe body 2 along the length direction.
The rear mud injection passage is communicated with the rear mud injection hole 202 of the draft tube.
The guide pipe body 2 is provided with a guide pipe rear sand injection hole 203 along the outer side wall of the rear part of the rock drilling direction.
And a back sand injection channel is formed in the flow guide pipe body 2 along the length direction.
The rear sand injection passage is communicated with the rear sand injection hole 203 of the draft tube.
The draft tube rear sand injection hole 203 is located at the rear end of the draft tube rear mud injection hole 202 in the rock drilling direction.
The injection hole 201 is located at the front end of the mud injection hole 202 behind the draft tube in the rock drilling direction.
And a rear mud pump is arranged in the rear mud injection channel.
And a back sand pump is arranged in the back sand injection channel.
The sand injection channel is internally provided with a pipeline with an eyelet to prevent the sand injection channel from being blocked.
A one-way valve is arranged at the sand outlet of the sand injection channel; the sand inlet is designed as a normally open opposite-insertion type conveying passage.
The outer wall of the front part of the guide pipe body 2 in the rock drilling direction is provided with a guide pipe front liquid sealing ring 204.
The liquid sealing ring 204 comprises fan-shaped blades and a connecting part.
The connecting part sleeves the guide pipe body 2 and rotates relatively.
Three liquid sealing rings 204 are arranged in front of the draft tube.
The fan-shaped blades of the liquid sealing ring 204 in front of each flow guide pipe are mutually abutted.
The angle of each fan-shaped blade is between 120 and 360 degrees.
The sum of the cross-sectional areas of each of the fan-shaped blades is larger than the cross-sectional area of the gap between the nozzle body 2 and the side wall of the formation being drilled.
The flow tube front plugging ring 206 is located at the front end of the flow tube front sand injection hole 205 in the rock drilling direction.
The flow tube front liquid seal ring 204 is located at the rear end of the flow tube front mud injection hole 208 in the rock drilling direction.
The rear outer side wall of the guide pipe body 2 in the rock drilling direction corresponds to the medicine injection hole 201 and is provided with a medicine injection hole 201 control switch.
The front outer side wall of the guide pipe body 2 in the rock drilling direction is provided with a front mud injection hole control switch corresponding to the front mud injection hole 208 of the guide pipe.
The front outer side wall of the guide pipe body 2 in the rock drilling direction is provided with a front sand injection hole control switch corresponding to the front sand injection hole 205 of the guide pipe.
The rear outer side wall of the guide pipe body 2 in the rock drilling direction is provided with a rear mud injection hole control switch corresponding to the rear mud injection hole 202 of the guide pipe.
The rear outer side wall of the guide pipe body 2 in the rock drilling direction is provided with a rear sand injection hole control switch corresponding to the rear sand injection hole 203 of the guide pipe.
The guide tube body 2 is provided with a chemical injection mechanism 209 at the rear in the rock drilling direction.
The guide tube body 2 is provided with a chemical injection switch 210 at the rear in the rock drilling direction.
The injection mechanism 209 is located at the rear end of the injection switch 210 in the rock drilling direction.
The drug injection switch 210 is located at the rear end of the liquid-tight ring 207 behind the delivery tube in the rock drilling direction.
The guide pipe body 2 is provided with an ignition hole 211 along the middle outer side wall of the rock drilling direction.
An ignition channel is formed in the diversion pipe body 2 along the length direction.
An ignition wire is arranged in the ignition channel.
The ignition wire communicates with the ignition hole 211.
The ignition wire is connected with a detonating device at the rear part along the rock drilling direction.
The rapid blasting drilling method comprises the following steps:
s1, the front and rear ends of the detonation section in the rock drilling direction are simultaneously injected with mud by the rapid blasting device to form a front mud column and a rear mud column, respectively.
And S2, injecting blasting powder between the front mud column and the rear mud column through a quick blasting device.
S3, simultaneously sand-injecting the front end of the front mud column in the rock drilling direction and the rear end of the rear mud column in the rock drilling direction by a rapid blasting device to form a front sand section and a rear sand section, respectively.
And S4, igniting the blasting charge through a quick blasting device, and blasting.
In S1, the step of forming the front and rear mud columns includes:
and S11, injecting mud into the front mud injection channel and the rear mud injection channel respectively, rotating the diversion pipe body simultaneously, and enabling mud to flow out of the front mud injection hole 208 and the rear mud injection hole 202 of the diversion pipe respectively.
And S12, starting the front mud pump to adsorb the mud, opening the front liquid sealing ring 204 of the guide pipe, and respectively forming a front mud column and a rear mud column between the guide pipe body 2 and the side wall of the rock drilling stratum, wherein the front mud column is positioned at the rear end of the front liquid sealing ring 204 of the guide pipe along the rock drilling direction.
In S2, the step of injecting the blasting agent includes:
and S21, starting the explosive injection mechanism, opening the rear liquid sealing ring 207 of the diversion pipe, injecting explosive into the explosive injection channel, enabling the explosive to flow out of the explosive injection holes, and forming liquid medicine sections between the diversion pipe body 2 and the side wall of the rock stratum and between the front mud column and the rear mud column.
And S22, starting the rear mud pump, and pushing the rear mud column to abut against the blasting powder.
In S3, the step of forming the front sand section and the rear sand section includes:
s31, sand is injected into the front sand injection passage and the rear sand injection passage, respectively, while rotating the guide tube body 2, sand flows out from the guide tube front sand injection hole 205 and the guide tube rear sand injection hole 203, respectively, and a front sand section and a rear sand section are formed between the guide tube body 2 and the rock formation side wall, the front mud column front end in the rock drilling direction, and the rear mud column rear end in the rock drilling direction, respectively.
And S32, starting the front sand pump, opening the front liquid sealing ring 204 of the flow guide pipe, and sucking the front sand section to be abutted against the front mud column.
And S33, starting the rear sand pump, and pushing the rear sand section to be abutted against the rear mud column.
In S4, the igniting step includes closing the draft tube and then closing the liquid sealing ring 207, activating the initiating device, and igniting the blasting charge by the ignition wire.
Another embodiment of the present invention is shown in fig. 2 to 3, and the embodiment provides a pneumatic percussion drill bit applied to a rapid blasting drilling method, including a drill bit body 1, wherein a plurality of percussion teeth 101 are embedded in a percussion end of the drill bit body 1.
Each of the impact teeth 101 extends beyond the end surface of the impact end.
The impact teeth 101 are made of hard alloy metal.
The drill bit body 1 is made of soft metal.
A plurality of air inlet channels 104 are arranged inside the drill bit body 1.
The outlet of each of the intake passages 104 extends to the end face of the impingement end.
The circumferential side wall of the impact end is provided with a plurality of slag discharge grooves 105.
The outlet of each slag discharge groove 105 extends to the end face of the impact end.
The impact teeth 101 are in the shape of a bar.
A plurality of main side impact teeth 102 are embedded in the impact end of the drill bit body 1.
The primary side impact teeth 102 are distributed on both sides of the outlet of each slag discharge groove 105.
Each of the primary side impact teeth 102 extends beyond the end face of the impact end.
The primary side impact teeth 102 are of a hard alloy metal.
The primary side impact teeth 102 are in the form of bars.
A plurality of secondary side impact teeth 103 are embedded at the impact end of the drill bit body 1.
The secondary side impact teeth 103 are distributed between every two slag discharge grooves 105.
Each of the secondary side impact teeth 103 extends beyond the end face of the impact end.
The secondary side impact teeth 103 are made of hard alloy metal.
The secondary side impact teeth 103 are in the shape of a cylindrical bar.
A plurality of cavities are arranged inside the drill bit body 1.
The driving end of the drill bit body 1 is installed on the impactor, the impactor and the plurality of air inlet channels 104 form a closed loop, when hydraulic oil is used as a power medium of the impactor, air or water and slurry are required to be additionally added to serve as a chip carrying medium, slag chips are discharged through the slag discharging groove 105, when the water or slurry is used as the power medium of the impactor, other loops do not need to be added, and the water or slurry after doing work can directly carry out the rock chips.
Another embodiment of the present invention is shown in fig. 4, and this embodiment provides a pneumatic and hydraulic combined percussion drill bit applied to a rapid blast drilling method, where the pneumatic and hydraulic combined percussion drill bit includes a drill bit body 1 and a sub-drill bit 11.
The driving end of the drill bit body 1 and the driving end of the auxiliary drill bit 11 are sleeved on the support.
The cross section of the drill bit body 1 is cylindrical.
The impact end of the drill bit body 1 is embedded with a plurality of impact teeth 101.
Each of the impact teeth 101 extends beyond the end surface of the impact end of the bit body 1.
The impact teeth 101 are made of hard alloy metal.
The drill bit body 1 is made of soft metal.
The impact end of the sub-drill 11 exceeds the end surface of the impact end of the drill body 1.
The secondary drill 11 is made of hard alloy metal.
A plurality of air inlet channels 104 are arranged inside the drill bit body 1.
The outlet of each air inlet passage 104 extends to the end face of the impact end of the bit body 1.
Each of the air intake passages 104 extends to the end face of the driving end of the bit body 1 after the driving ends of the bits meet.
A plurality of sub air intake passages 111 are provided inside the body of the sub bit 11.
The outlet of each of the secondary air intake passages 111 extends to the end surface of the striking end of the secondary drill bit 11.
Each of the sub air intake passages 111 extends to the end face of the driving end of the sub bit 11 after the driving ends of the sub bits 11 are merged.
The circumferential side wall of the drill bit is provided with a plurality of slag discharge grooves 105.
Each of the slag discharge grooves 105 extends from the end face of the drive end of the drill bit to the end face of the impact end of the drill bit.
The side wall of the auxiliary drill bit 11 is provided with a plurality of convex blocks.
The bumps are arranged in rows and columns.
Gaps are reserved between the bumps in each row.
Gaps are reserved among the convex blocks in each column.
The gap between each of the lugs forms a secondary slag chute 112.
The center of the bracket is provided with a through hole.
The through hole is circular.
The bracket is provided with a plurality of sub through holes around the through hole.
The drill bit moves back and forth or rotates relatively in the through hole.
The sub-drill 11 is provided in plurality.
Each of the sub bits 11 moves back and forth in each of the sub through holes, respectively.
The impact teeth 101 are in the shape of a bar.
And a plurality of cutting teeth are embedded at the impact end of the drill bit body 1.
The cutting teeth are distributed on two sides of the outlet of each slag discharge groove 105.
Each of the cutting teeth extends beyond the end face of the impact end.
The cutting teeth are made of hard alloy metal.
The cutting teeth are in a columnar strip shape.
A plurality of secondary side impact teeth 103 are embedded at the impact end of the drill bit body 1.
The secondary side impact teeth 103 are distributed between every two slag discharge grooves 105.
Each of the secondary side impact teeth 103 extends beyond the end face of the impact end.
The secondary side impact teeth 103 are made of hard alloy metal.
The secondary side impact teeth 103 are in the shape of a cylindrical bar.
A plurality of cavities are arranged inside the drill bit body 1.
The drill bit body 1 with the drive end of vice drill bit 11 is installed on the impacter, and the impacter forms closed circuit with a plurality of inlet channel 104 and vice inlet channel 111, when adopting hydraulic oil as the power medium of impacter, then need add gas in addition or water, mud and do and carry the bits medium, the cinder passes through arrange the cinder groove 105 with vice cinder groove 112 discharges, when adopting water or mud as the power medium of impacter, then need not add other return circuits, water or mud after doing work can directly take the detritus out.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A rapid blasting drilling method is characterized by comprising the following steps:
s1, injecting mud to the front end and the rear end of the detonation section along the rock drilling direction through a quick blasting device to form a front mud column and a rear mud column respectively;
s2, injecting blasting powder between the front mud column and the rear mud column through a quick blasting device;
s3, simultaneously injecting sand to the front end of the front mud column along the rock drilling direction and the rear end of the rear mud column along the rock drilling direction through a quick blasting device to respectively form a front sand section and a rear sand section;
and S4, igniting the blasting charge through a quick blasting device, and blasting.
2. The rapid blast drilling method according to claim 1,
the quick blasting device comprises a guide pipe body, and the outer side wall of the rear part of the guide pipe body along the rock drilling direction is provided with a powder injection hole;
a medicine injection channel is formed in the length direction in the flow guide pipe body;
the medicine injection channel is communicated with the medicine injection hole;
the outer wall of the front part of the flow guide pipe body along the rock drilling direction is provided with a front plugging ring;
the outer wall of the rear part of the flow guide pipe body along the rock drilling direction is provided with a rear liquid sealing ring;
the medicine injection hole is positioned at the front end of the rear liquid sealing ring along the rock drilling direction;
the front outer side wall of the guide pipe body along the rock drilling direction is provided with a front mud injection hole;
a front mud injection channel is formed in the length direction in the flow guide pipe body;
the front mud injection channel is communicated with the front mud injection hole;
the front outer side wall of the guide pipe body along the rock drilling direction is provided with a front sand injection hole;
a front sand injection channel is arranged in the flow guide pipe body along the length direction;
the front sand injection channel is communicated with the front sand injection hole;
the front sand injection hole is positioned at the front end of the front mud injection hole along the rock drilling direction;
a front mud pump is arranged in the front mud injection channel;
a front sand pump is arranged in the front sand injection channel;
the outer side wall of the rear part of the guide pipe body along the rock drilling direction is provided with a rear mud injection hole;
a rear mud injection channel is formed in the length direction in the flow guide pipe body;
the rear mud injection channel is communicated with the rear mud injection hole;
the outer side wall of the rear part of the flow guide pipe body along the rock drilling direction is provided with a rear sand injection hole;
a rear sand injection channel is formed in the length direction in the flow guide pipe body;
the rear sand injection channel is communicated with the rear sand injection hole;
the rear sand injection hole is positioned at the rear end of the rear mud injection hole in the rock drilling direction;
the drug injection hole is positioned at the front end of the rear mud injection hole along the rock drilling direction;
a rear mud pump is arranged in the rear mud injection channel;
a rear sand pump is arranged in the rear sand injection channel;
the outer wall of the front part of the flow guide pipe body along the rock drilling direction is provided with a front liquid sealing ring;
the front plugging ring is positioned at the front end of the front sand injection hole in the rock drilling direction;
the front liquid sealing ring is positioned at the rear end of the front mud injection hole along the rock drilling direction;
the rear part of the flow guide pipe body along the rock drilling direction is provided with a medicine injection mechanism;
the medicine injection mechanism is positioned at the rear end of the rear liquid sealing ring along the rock drilling direction;
an ignition hole is formed in the outer side wall of the middle part of the flow guide pipe body along the rock drilling direction;
an ignition channel is formed in the length direction in the flow guide pipe body;
an ignition wire is arranged in the ignition channel;
the ignition wire is communicated with the ignition hole;
the ignition wire is connected with a detonating device at the rear part along the rock drilling direction.
3. The rapid blast drilling method of claim 2, wherein the step of forming a front mud column and a rear mud column at S1 comprises:
s11, injecting mud into the front mud injection channel and the rear mud injection channel respectively, and rotating the diversion pipe body at the same time, wherein mud flows out of the front mud injection hole and the rear mud injection hole respectively;
and S12, starting the front mud pump to absorb the mud, opening the front liquid sealing ring, and respectively forming a front mud column and a rear mud column between the guide pipe body and the side wall of the rock drilling stratum, wherein the front mud column is positioned at the rear end of the front liquid sealing ring in the rock drilling direction.
4. The rapid blast drilling method of claim 2, wherein the step of injecting blasting agent in S2 comprises:
s21, starting the explosive injection mechanism, opening the rear liquid sealing ring, injecting explosive into the explosive injection channel, wherein the explosive flows out of the explosive injection holes, and liquid medicine sections are formed between the diversion pipe body and the side wall of the rock drilling stratum and between the front mud column and the rear mud column;
and S22, starting the rear mud pump, and pushing the rear mud column to abut against the blasting powder.
5. The rapid blast drilling method of claim 2, wherein the step of forming the front sand section and the rear sand section in S3 comprises:
s31, injecting sand into the front sand injection passage and the rear sand injection passage respectively, and rotating the guide pipe body simultaneously, wherein the sand flows out from the front sand injection hole and the rear sand injection hole respectively, and a front sand section and a rear sand section are formed between the guide pipe body and the rock drilling formation side wall and at the front end of the front mud column in the rock drilling direction and at the rear end of the rear mud column in the rock drilling direction respectively;
s32, starting the front sand pump, opening the front liquid sealing ring, and sucking the front sand section to abut against the front mud column;
and S33, starting the rear sand pump, and pushing the rear sand section to be abutted against the rear mud column.
6. The rapid blast drilling method of claim 2, wherein said firing step comprises closing said rear liquid-sealing ring, activating said initiating means, and firing said blasting charge by a firing line at S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460989.XA CN111578800A (en) | 2020-05-27 | 2020-05-27 | Rapid blasting drilling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010460989.XA CN111578800A (en) | 2020-05-27 | 2020-05-27 | Rapid blasting drilling method |
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| CN111578800A true CN111578800A (en) | 2020-08-25 |
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