CN115874926A - Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method - Google Patents
Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method Download PDFInfo
- Publication number
- CN115874926A CN115874926A CN202211512314.0A CN202211512314A CN115874926A CN 115874926 A CN115874926 A CN 115874926A CN 202211512314 A CN202211512314 A CN 202211512314A CN 115874926 A CN115874926 A CN 115874926A
- Authority
- CN
- China
- Prior art keywords
- drilling
- fracturing
- slotting
- packing rubber
- sealing
- 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.)
- Pending
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The invention discloses equipment and an operation method for weakening a hard rock body through drilling, slotting and in-situ hole sealing and fracturing. Along with the rising of water jet working pressure, the slide bar moves left and contacts with the inside bell mouth of drill bit, closes the supplementary drilling function of low pressure, continues to improve the operating pressure of pressurized-water system, realizes the drilling hole sealing of slot both sides and the rock mass normal position fracturing in the middle of the hole sealing, can carry out the normal position hole sealing fracturing of many slots in the rock mass under the different drilling depths, makes complete rock mass fracturing cut apart into sheet-like weakening rock mass intensity. The invention integrates the drilling, slotting and fracturing processes which can be completed only by frequently advancing and retreating the drilling tool, greatly improves the weakening efficiency of rock fracturing, has simple structure and convenient use, and provides a foundation for mechanically breaking hard rock.
Description
Technical Field
The invention relates to the technical field of rock mass modification application, in particular to equipment and an operation method for weakening a hard rock mass through drilling and slotting and in-situ hole sealing fracturing.
Background
In hard rock tunnel tunneling and coal face fault crossing, due to the limitation of factors such as hard rock cutting technology and the like, the ultra-hard rock tunnel tunneling and the coal face fault crossing are still constructed by adopting a drilling and blasting method, coal mine safety accidents such as gas explosion, dust explosion, rock burst and the like are easily caused, and the problems of low rock mass crushing efficiency, poor safety and the like exist. The cutting difficulty of a cutting pick type heading machine and a coal mining machine for cutting and crushing hard rock is high, and the cutting power of the cutting pick type heading machine is 300kW, the cutting strength of the heading machine is 150MPa, and the abrasive hard rock efficiency is less than 10m 3 H, the specific energy consumption of crushing the superhard rock is extremely low, the dust yield is large, and the consumption of cutting teeth is as high as 10 knots/m 3 The cutting pick type heading machine is not suitable for heading the superhard rock roadway, and the cutting pick type coal mining machine is not suitable for mechanical cutting of a fault rock body. Rock tunnel diggingThe great propelling force provided by the feeding TBM can extrude and crush hard rock masses, and the hard rock masses are difficult to be suitable for underground tunnel excavation of coal mines due to large volume, complex structure, poor moving flexibility and the like, and the problems of high hob abrasion speed, high cost and the like exist in hard rock tunnel excavation. Therefore, how to realize the mechanical and efficient crushing of the superhard rock mass becomes a key problem and difficulty of rock tunneling or mining equipment.
The mechanical drilling assisted by the water jet can reduce the strength of a rock structure, is beneficial to fast drilling of a hard rock body, can reduce high temperature generated by friction in the drilling process of a mechanical cutting tooth assisted by the water jet, prolongs the service life of a drill bit and reduces dust harm in the drilling process. The water jet in-situ hole sealing fracturing technology injects high-pressure water into a cutting seam of a rock drilling hole, and realizes the fracturing of the superhard rock mass by utilizing the compression resistance and non-tensile property of the rock. The technology is widely applied to the fields of oil and gas exploitation, coal mine hard roof hydraulic fracturing control and the like. The water jet rotary slotting and hole sealing fracturing make hard rock mass distributed in a plate shape, greatly weaken the structural strength of the rock mass and be easier to break in subsequent machinery. The in-situ hole sealing fracturing technology can realize ultra-long distance drilling and hole sealing fracturing at different intervals at one time in the hard rock body drilling process, greatly improve the fracturing weakening efficiency and effect of the hard rock body, and provide conditions for fast tunneling and mining of the hard rock body.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides equipment and an operation method for weakening a hard rock mass by drilling, slotting and in-situ hole sealing and fracturing, wherein the equipment and the operation method are simple in structure and convenient to operate, the structural strength of the hard rock mass can be reduced, the ultra-hard rock breaking with extremely high uniaxial compressive strength can be efficiently realized, remote drilling can be realized by additionally arranging a drill rod, high-pressure slotting and fracturing of the rock mass can be performed by changing the working pressure of water jet, and mechanical drilling can be assisted to improve the rock drilling efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a drilling slot and normal position hole sealing fracturing weakening hard rock mass equips, includes running gear, high-pressure water system, rotary driving mechanism, advancing mechanism, drilling angle adjustment mechanism, drilling slot fracturing device, one-level connection drilling rod and guide rail, high-pressure water system installs on running gear, and the guide rail articulates on running gear, and drilling angle adjustment mechanism both ends are articulated with running gear and guide rail respectively, and rotary driving mechanism slidable mounting is on the guide rail, and the drilling rod both ends are connected with rotary driving mechanism and drilling slot fracturing device respectively, and advancing mechanism both ends are connected with rotary driving mechanism and guide rail respectively.
Preferably, the drilling, slotting and fracturing device comprises a drill bit, a second-stage connecting drill rod, a left-side sealing drill rod, a third-stage connecting drill rod and a right-side sealing drill rod which are sequentially connected through taper threads, the rotary slotting device is annularly sleeved on the outer surface of the third-stage connecting drill rod, grooves are formed in the outer surface of the third-stage connecting drill rod and the inner surface of the rotary slotting device in a machining mode, the third-stage connecting drill rod is in rolling connection with the rotary slotting device through a ball bearing, and a slotting flow channel machined in the third-stage connecting drill rod is installed in alignment with an inclined flow channel machined in the rotary slotting device.
Preferably, a tapered hole is processed in the drill bit, one end, facing the drill bit, of the sliding rod is processed into a semi-sphere shape, the semi-sphere shape and the tapered hole form a movable seal, and a low-pressure large-stroke spring is installed between the semi-sphere end of the sliding rod and the tapered hole.
Further preferably, the drill bit comprises a solid pick and a hollow pick, and the solid pick and the hollow pick are arranged according to the following ratio of 2:1 quantity welds in turn at the drill bit front end face, hollow pick height is lower and interior runner is the toper shrink form, fixes welding according to 30-90 at the drill bit terminal surface creep into the runner exit position, and the rotatory rock that strikes of water jet through hollow pick forms annular slot, and the solid pick extrudees the rock ridge in the middle of the broken annular slot.
Preferably, threaded holes are formed in the center positions of the left side sealing drill rod and the right side sealing drill rod, three tool withdrawal grooves are formed in the left side of the threaded holes, axial stepped holes are formed in the right side of the threaded holes, inner hexagonal grooves and threaded holes are formed in the end face of a valve sleeve and used for installing the valve sleeve and pipe threads, the bottom of packing rubber is connected with the pipe threads, an annular tool withdrawal groove is matched with a packing rubber left side fastener, a packing rubber reset spring and a packing rubber reset sliding block are installed inside the axial stepped holes, the packing rubber reset sliding block is of a U-shaped structure and is buckled and pressed at the stroke tail end of the packing rubber reset spring, a square groove is formed in the sealing drill rod at the top of the packing rubber reset sliding block, a packing rubber stop plate made of a brass material is arranged inside the sealing rubber stop plate, the tail end of the packing rubber right side fastener is buckled and pressed and connected with the packing rubber right side fastener, the packing rubber right side fastener is embedded into five centimeters, the size of an opening at the bottom of the stepped hole is smaller than the outer diameter of the valve sleeve, the outer diameter of the spring is close to the inner diameter of the valve sleeve, and a T-shaped flow channel is formed in the valve core.
Preferably, the inner surface and the end surface of the rotary slotting device are both provided with wear-resistant coatings, the inner part of the rotary slotting device is provided with an inclined flow passage, and the high-pressure nozzle is welded on the surface of the rotary slotting device.
Preferably, the T-shaped flow channel is processed in the same position of the sliding rod and the valve core, the sliding rod is matched with a low-pressure large-stroke spring and is arranged in the secondary connecting drill rod, and the limiting valve block is arranged at the tail end of the secondary connecting drill rod.
The invention also provides an operation method of the equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening hard rock mass, which comprises the following steps:
s1: adjusting the drilling position: the walking mechanism works to enable the equipment to reach a drilling working surface, and the drilling angle adjusting mechanism is controlled to enable a drill bit of the drilling, slotting and fracturing device to be at a preset drilling position and angle;
s2: drilling: the high-pressure water system, the rotary driving mechanism and the propelling mechanism are started in sequence, the high-pressure water system is controlled to output low-pressure water, the low-pressure water sequentially passes through the T-shaped flow channel, the taper hole, the drilling flow channel and the hollow cutting teeth in the slide rod to impact rocks, the high-pressure water system assists the lower rotary driving mechanism to drive the drill bit to rotate to break the rocks, and the propelling mechanism gradually propels along the axial direction of the primary connecting drill rod to complete drilling at a certain depth;
s3: slotting: after the drill bit drills to a preset position, the propelling mechanism and the rotary driving mechanism are sequentially closed, then the output working pressure of a high-pressure water system is increased, the sliding rod moves leftwards under the pushing of high-pressure water to further compress the low-pressure large-stroke spring, the sliding rod is in contact with a conical hole in the drill bit to form sealing, the high-pressure water is prevented from entering the drill bit to assist in drilling, the high-pressure water sequentially enters a slotting flow channel, an inclined flow channel and a high-pressure nozzle to slot rocks in the boosting process of the high-pressure water system, the rotary slotting device is pushed to rapidly rotate, and meanwhile, the high-pressure water is continuously injected into packing rubber through the valve core, the valve sleeve and the pipe thread;
s4: sealing: along with the continuous rising of the pressure, the packing rubber expands, the right packing rubber fastener drives the packing rubber stop plate to move leftwards and compress the packing rubber return spring until the hole sealing rubbers on the two sides of the rotary slotting device expand and contact with the hole wall to form a sealing space, the high-pressure water pushes the valve core to move upwards to compress the high-pressure small-stroke spring, the valve core contacts with the valve sleeve to close a water injection channel of the packing rubber, and the right sealing device and the left sealing device have the same working principle;
s5: fracturing and resetting: after the packing rubber expands to complete the sealing of a fracturing area, the valve core is contacted with the valve sleeve, a water injection channel of the packing rubber is cut off, the working pressure of a high-pressure water system is increased, the in-situ fracturing of rocks in the packing area after slotting is realized, the high-pressure water system is closed until the steep rise of the working pressure of water jet is detected, the low-pressure large-stroke spring pushes the slide rod to move rightwards and reset to a limit valve block, the high-pressure small-stroke spring pushes the valve core to move downwards and reset until the valve core is contacted with the stepped hole, the water injection channel at the top of the valve sleeve is opened, and the packing rubber is restored to the original state under the reasonable action of the elastic shrinkage force of the packing rubber and a packing rubber reset spring;
s6: and (3) repeating the steps S2, S3, S4 and S5 to finish the slotting, hole sealing and fracturing of the drilling holes at different depths, so that the complete rock body fracturing is divided into thin plate-shaped weakened rock body strength, and after the slotting and hole sealing fracturing of the rock body at the specific position are finished, the step S1 is switched to change the drilling position or angle to continue the rock body weakening construction.
Compared with the prior art, the invention has the beneficial effects that: the invention fully utilizes the compression resistance but not tensile property of the hard rock mass, combines the technology of crushing the hard rock by the water jet flow auxiliary mechanical cutter and the hydraulic fracturing technology, switches the working procedures of water jet flow auxiliary drilling and rotary slot fracturing of the hard rock mass by controlling the working pressure of the water jet flow, extends the slot in the rock mass by the hydraulic fracturing technology, and fractures the hard rock mass into the plate-shaped rock, thereby weakening the strength and the impact resistance of the rock mass, greatly reducing the difficulty of crushing the rock mass, improving the working condition of hard rock mass tunneling, realizing the mechanical high-efficiency tunneling of the hard rock mass of a roadway or a tunnel, simultaneously reducing the production cost, prolonging the service life of a drill bit and realizing the safe production.
Drawings
FIG. 1 is a schematic diagram of equipment for weakening a hard rock mass through drilling and slotting and in-situ hole sealing fracturing, which is provided by the embodiment of the invention;
fig. 2 is a schematic view of a drilling, slotting and fracturing apparatus provided in an embodiment of the present invention;
FIG. 3 is a three-dimensional cross-sectional view of a drill bit according to an embodiment of the present invention
FIG. 4 is a three-dimensional cross-sectional view of a sealing device according to an embodiment of the present invention
FIG. 5 is a schematic view of a rotary slitting device according to an embodiment of the present invention.
In the figure: 1. a traveling mechanism; 2. a high-pressure water system 3, a rotation driving mechanism; 4. a propulsion mechanism; 5. a drilling angle adjusting mechanism; 6. drilling, slotting and fracturing devices; 7. a first-stage connection drill rod; 8. a guide rail; 9. thin plate-like rocks; 6-1, a drill bit; 6-1-1, drilling a flow passage; 6-1-2, solid cutting pick; 6-1-3, hollow cutting pick; 6-1-4, tapered holes; 6-2, connecting a drill rod in a second stage; 6-3, sealing the drill rod at the left side; 6-3-1, inner hexagonal grooves; 6-3-2, valve core; 6-3-3, valve sleeve; 6-3-4 parts of high-pressure small-stroke spring; 6-3-5 of step-shaped through holes; 6-3-6, T-shaped flow channel; 6-3-7, pipe thread; 6-3-8 parts of packing rubber; 6-3-9 parts of packing rubber left fastener; 6-3-10 parts of annular tool withdrawal grooves; 6-3-11 parts of right fastener of packing rubber; 6-3-12, sealing the axial stepped hole of the drill rod; 6-3-13, packing rubber reset sliding block; 6-3-14 parts of packing rubber return spring; 6-3-15 parts of packing rubber stop plates; 6-4, connecting a drill rod in a third stage; 6-4-1, drilling a flow channel; 6-5, rotating a slotting device; 6-5-1, groove; 6-5-2, inclined flow channel; 6-5-3, high-pressure nozzle; 6-6, sealing the drill rod at the right side; 6-7, low-pressure large-stroke spring; 6-8, a limit valve block; 6-9, rolling bearings; 6-10 parts of a sliding rod.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a drilling slot and normal position hole sealing fracturing weakening hard rock mass equipment, including running gear 1, high-pressure water system 2, rotation driving mechanism 3, advancing mechanism 4, drilling angle adjustment mechanism 5, drilling slot fracturing device 6, drilling rod 7 and guide rail 8 are connected to the one-level, high-pressure water system 2 installs on running gear 1, guide rail 8 articulates on running gear 1, 5 both ends of drilling angle adjustment mechanism are articulated with running gear 1 and guide rail 8 respectively, 3 slidable mounting of rotation driving mechanism are on guide rail 8, 7 both ends of drilling rod are connected with rotation driving mechanism 3 and drilling slot fracturing device 6 respectively, 4 both ends of advancing mechanism are connected with rotation driving mechanism 3 and guide rail 8 respectively.
The high-pressure water system 2 is responsible for water jet output of the device, after the walking mechanism 1 drives the device to enter a preset position, the drilling angle is adjusted by the drilling angle adjusting mechanism 5, the high-pressure water system 2 and the rotary driving mechanism 3 are started, the drill bit 6-1 in the front of the first-stage connecting drill rod 7 works in advance, the drilling work is carried out by the propulsion mechanism 4, when the water pressure is further lifted, the slide rod 6-10 on the left side in the first-stage connecting drill rod 7 seals water flow at the position of the drill bit 6-1 under the action of high-pressure water, the drilling and slotting fracturing device 6 enters the slotting flow passage 6-4-1, the inclined flow passage 6-5-2 and the high-pressure nozzle 6-5-3 slotting rock in sequence under the action of the water pressure, the rotary slotting device 6-5 is pushed to rotate rapidly, slotting work of a target area is achieved, the packing rubber 6-3-8 on two sides of the target area gradually expands to form a sealed cavity with the target area along with the further lifting of the water pressure, and in-situ fracturing of the packing area rock after slotting is achieved.
Specifically, the drilling, slotting and fracturing device 6 comprises a drill bit 6-1, a second-stage connecting drill rod 6-2, a left-side sealing drill rod 6-3, a third-stage connecting drill rod 6-4 and a right-side sealing drill rod 6-6 which are sequentially connected through taper threads, a rotary slotting device 6-5 is annularly sleeved on the outer surface of the third-stage connecting drill rod 6-4, grooves 6-5-1 are formed in the outer surface of the third-stage connecting drill rod 6-4 and the inner surface of the rotary slotting device 6-5, the third-stage connecting drill rod 6-4 is in rolling connection with the rotary slotting device 6-5 through ball bearings 6-9, a slotting flow passage 6-4-1 machined in the third-stage connecting drill rod 6-4 and an inclined flow passage 6-5-2 in the rotary slotting device 6-5 are installed in an aligned mode, the left-side sealing drill rod 6-3 and the right-side sealing drill rod 6-6 are used for forming a sealing cavity in a target area, and the rotary slotting device 6-5 can rotate on the third-stage connecting drill rod 6-4 under the action of high-pressure water to match with a high-pressure nozzle 6-5 above the rotary slotting device 6-5 for fracturing rock.
Preferably, a conical hole 6-1-4 is machined in the drill 6-1, one end, facing the drill 6-1, of the slide rod 6-10 is machined into a hemispherical shape, and forms a movable seal with the conical hole 6-1-4, a low-pressure large-stroke spring 6-7 is installed between the hemispherical end of the slide rod 6-10 and the conical hole 6-1-4, the working state of the drilling, cutting and fracturing device 6 is controlled by matching with the working pressure of a water jet, the water jet sequentially passes through a T-shaped flow channel in the slide rod 6-10, the conical hole 6-1-4, a drilling flow channel 6-1-1 and a hollow cutting pick 6-1-3 to impact rocks, the hemispherical end of the slide rod 6-10 and the conical hole 6-1-4 are matched to form a pressure valve body, the water flow can enter the drill 6-1 in a low-pressure water state, and the hemispherical end of the slide rod 6-10 and the conical hole 6-1-4 are attached to form a seal in a high-pressure state, and the device enters subsequent sealing and fractures the rocks.
As a further preference, the drill bit 6-1 includes a solid pick 6-1-2 and a hollow pick 6-1-3, the solid pick 6-1-2 and the hollow pick 6-1-3 being arranged in a manner such that 2:1 number of the hollow cutting teeth 6-1-3 are alternately welded on the front end face of a drill bit 6-1, the hollow cutting teeth 6-1-3 are lower in height, the inner flow channel is in a conical contraction shape, the hollow cutting teeth are fixedly welded at the outlet position of a drilling flow channel 6-1-1 on the end face of the drill bit 6-1 according to the angle of 30-90 degrees, water jet flow sprayed by the hollow cutting teeth 6-1-3 rotationally impacts rock to form annular cutting seams, the solid cutting teeth 6-1-2 extrude and break rock ridges in the middle of the annular cutting seams to avoid interference with the water jet flow, and the solid cutting teeth 6-1-2 and the hollow cutting teeth 6-1-3 are all machined by materials with high abrasion resistance.
Preferably, threaded holes are processed in the center positions of the left side sealing drill rod 6-3 and the right side sealing drill rod 6-6, three tool withdrawal grooves 6-3-10 are processed in the left side of each threaded hole, axial stepped holes 6-3-12, valve sleeves 6-3-3, inner hexagonal grooves 6-3-1 and the threaded holes are processed in the right side of each threaded hole and used for installing the valve sleeves 6-3-3 and pipe threads 6-3-7, the bottoms of packing rubbers 6-3-8 are connected with the pipe threads 6-3-7, the annular tool withdrawal grooves 6-3-10 are matched with packing rubber left side fasteners 6-3-9 to realize the fixation of the left ends of the packing rubbers 6-3-8, packing rubber reset springs 6-3-14 and packing rubber reset sliders 6-3-13 are installed inside the axial stepped holes 6-3-12, the packing rubber reset sliding block 6-3-13 is of a U-shaped structure and is buckled and pressed at the tail end of the stroke of the packing rubber reset spring 6-3-14, a square groove is processed at the top part in the stroke range of the packing rubber reset sliding block 6-3-13, a packing rubber stop plate 6-3-15 made of brass is arranged in the packing rubber stop plate, the tail end of the packing rubber stop plate is buckled and pressed with a right fastener 6-3-11 of the packing rubber, the right fastener 6-3-11 of the packing rubber is embedded into the packing rubber for 6-3-8 penmen to prevent the fastener from falling off in the expansion process of the packing rubber 6-3-8, the size of an opening at the bottom of the stepped hole 6-3-5 is smaller than the outer diameter of the valve sleeve 6-3-3, the high-pressure small-stroke spring 6-3-5 in a low-pressure state is prevented from pushing the valve core 6-3-2 into the internal flow channel of the drill rod, the outer diameter of the spring is close to the inner diameter of the valve sleeve 6-3-3, the T-shaped flow channel 6-3-6 is processed in the valve core 6-3-2, and high-pressure water is continuously filled into the packing rubber 6-3-8 in the process of increasing the water jet pressure in the drill rod through the T-shaped flow channel 6-3-3.
Preferably, the inner surface and the end face of the rotary slotting device 6-5 are both provided with wear-resistant coatings, the inner part of the rotary slotting device is provided with an inclined runner 6-5-2, and the high-pressure nozzle 6-5-3 is welded on the surface of the rotary slotting device 6-5, and the rotary slotting device can be ensured to rotate around the three-stage connecting drill rod 6-4 quickly under the pushing of high-pressure water.
Preferably, a T-shaped flow channel is processed in the same position of the sliding rod 6-10 and the valve core 6-3-2, the sliding rod is matched with a low-pressure large-stroke spring 6-7 and is arranged in the secondary connecting drill rod 6-2, the opening and closing of the low-pressure drilling auxiliary function are controlled by adjusting the pressure of water jet, and the limiting valve block 6-8 is arranged at the tail end of the secondary connecting drill rod 6-2 to limit the axial movement range of the sliding rod 6-10.
The specific working principle of the invention is as follows: under the combined action of the rotary driving mechanism 3 and the propelling mechanism 5, the low-pressure water auxiliary drill bit 6-1 finishes drilling, simultaneously jets and flows through the slotting flow channel to enter the drilling auxiliary drill bit 6-1 to clean rock debris, the packing rubber 6-3-8 is not enough to deform in a low-pressure state, the slide rod 6-10 moves leftwards to be in contact with a tapered hole in the drill bit 6-1 along with the rise of the working pressure of the water jet, the low-pressure auxiliary drilling function is closed, the rotary slotting device 6-5 rotates slotting rock under the push of high-pressure water, and simultaneously the packing rubber 6-3-8 gradually expands, the right fastener 6-3-11 of the packing rubber 6-3-8 and the packing rubber stop plate 6-3-15 move leftwards along with the packing rubber 6-3-8, the valve core 6-3-2 moves upwards to be in contact with the valve sleeve 6-3-3, the communication between jet flow in the drill rod 6-1 and high-pressure water in the packing rubber 6-3-8 is cut off, constant pressure is maintained in the packing rubber 6-3-8, the expansion state is kept, the working pressure of a water compression system is continuously improved, the in-situ fracturing of the hole sealing holes on two sides of the cutting seam and the hole sealing middle rock body is realized, the in-situ fracturing of multiple cutting seams in the rock body can be carried out under different drilling depths, and the complete rock body is fractured and divided into thin plate-shaped weakened rock body strength.
S1: adjusting the drilling position: the walking mechanism 1 works to enable the equipment to reach a drilling working surface, and the drilling angle adjusting mechanism 5 is controlled to enable a drill bit 6-1 of the drilling, cutting and fracturing device 6 to be at a preset drilling position and angle;
s2: drilling: the high-pressure water system 2, the rotary driving mechanism 3 and the propelling mechanism 4 are started in sequence, the high-pressure water system 2 is controlled to output low-pressure water, the low-pressure water sequentially passes through a T-shaped flow passage, a conical hole 6-1-4, a drilling flow passage 6-1-1 and a hollow cutting tooth 6-1-3 in a sliding rod 6-10 to impact rocks, the high-pressure water system 2 assists the lower rotary driving mechanism 3 to drive a drill bit 6-1 to rotate and crush the rocks, and the propelling mechanism 4 gradually propels along the axial direction of a first-stage connecting drill rod 7 to complete drilling at a certain depth;
s3: slotting: after the drill bit 6-1 drills to a preset position, the propelling mechanism 4 and the rotary driving mechanism 3 are sequentially closed, then the output working pressure of the high-pressure water system 2 is increased, the slide rod 6-10 moves leftwards under the pushing of high-pressure water to further compress the low-pressure large-stroke spring 6-7, the slide rod 6-10 is in contact with the conical hole 6-1-4 in the drill bit 6-1 to form sealing, the high-pressure water is prevented from entering the drill bit 6-1 for auxiliary drilling, in the boosting process of the high-pressure water system 2, the high-pressure water sequentially enters the slit flow channel 6-4-1, the inclined flow channel 6-5-2 and the high-pressure nozzle 6-5-3 to slit rocks and pushes the rotary slit device 6-5 to rotate quickly, and meanwhile, the high-pressure water continuously injects packing rubber 6-3-8 through the valve core 6-2, the valve sleeve 6-3 and the pipe thread 6-3-7;
s4: sealing: along with the continuous rising of the pressure, the packing rubber 6-3-8 expands, the right packing rubber fastener 6-3-11 drives the packing rubber stop plate 6-3-15 to move leftwards and compress the packing rubber return spring 6-3-14 until the hole sealing rubber 6-3-8 on the two sides of the rotary slotting device 6-5 expands to contact with the hole wall to form a sealed space, high pressure water pushes the valve core 6-3-2 to move upwards to compress the high pressure small stroke spring 6-3-4, the valve core 6-3-2 contacts with the valve sleeve 6-3-3, a water injection channel of the packing rubber 6-3-8 is closed, and the right sealing device 6-6 and the left sealing device 6-3 work in the same principle;
s5: fracturing and resetting: after the packing rubber 6-3-8 expands to complete the sealing of a fracturing area, the valve core 6-3-2 is in contact with the valve sleeve 6-3-3, a water injection channel of the packing rubber 6-3-8 is cut off, the working pressure of the high-pressure water system 2 is increased, the in-situ fracturing of rocks in the packing area after slotting is realized, the high-pressure water system 2 is closed until the working pressure of water jet is detected to rise rapidly, the low-pressure large-stroke spring 6-7 pushes the slide rod 6-10 to move rightwards and reset to the limit valve block 6-8, the high-pressure small-stroke spring 6-3-4 pushes the valve core 6-3-2 to move downwards and reset to the state that the valve core 6-3-2 is in contact with the stepped hole 6-3-5, the water injection channel at the top of the valve sleeve 6-3-3 is opened, and the packing rubber 6-3-1 restores to the original state under the reasonable action of the elastic contraction force of the packing rubber and the reset spring 6-3-14;
s6: and (3) repeating the steps S2, S3, S4 and S5 to finish the slotting, hole sealing and fracturing of the drilling holes at different depths, so that the complete rock body fracturing is divided into thin plate-shaped weakened rock body strength, and after the slotting and hole sealing fracturing of the rock body at the specific position are finished, the step S1 is switched to change the drilling position or angle to continue the rock body weakening construction.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a hard rock mass of drilling slot and normal position hole sealing fracturing weakening is equipped which characterized in that: the drilling and fracturing device comprises a travelling mechanism (1), a high-pressure water system (2), a rotary driving mechanism (3), a propelling mechanism (4), a drilling angle adjusting mechanism (5), a drilling and fracturing device (6) and a one-stage connecting drill rod (7) and a guide rail (8), wherein the high-pressure water system (2) is installed on the travelling mechanism (1), the guide rail (8) is hinged to the travelling mechanism (1), the two ends of the drilling angle adjusting mechanism (5) are hinged to the travelling mechanism (1) and the guide rail (8) respectively, the rotary driving mechanism (3) is installed on the guide rail (8) in a sliding mode, the two ends of the drill rod (7) are connected with the rotary driving mechanism (3) and the drilling and fracturing device (6) respectively, and the two ends of the propelling mechanism (4) are connected with the rotary driving mechanism (3) and the guide rail (8) respectively.
2. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening of hard rock mass according to claim 1 is characterized in that: the drilling, slotting and fracturing device (6) comprises a drill bit (6-1), a second-stage connecting drill rod (6-2), a left-side sealing drill rod (6-3), a third-stage connecting drill rod (6-4) and a right-side sealing drill rod (6-6) which are sequentially connected through taper threads, a rotary slotting device (6-5) is annularly sleeved on the outer surface of the third-stage connecting drill rod (6-4), grooves (6-5-1) are respectively machined on the annular outer surface of the third-stage connecting drill rod (6-4) and the inner surface of the rotary slotting device (6-5), the third-stage connecting drill rod (6-4) is in rolling connection with the rotary slotting device (6-5) through a ball bearing (6-9), and a slotting flow passage (6-4-1) machined in the third-stage connecting drill rod (6-4) is installed in an aligned mode with an inclined flow passage (6-5-2) in the rotary slotting device (6-5).
3. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening of hard rock mass according to claim 2 is characterized in that: a conical hole (6-1-4) is machined in the drill bit (6-1), one end, facing the drill bit (6-1), of the sliding rod (6-10) is machined into a hemispherical shape to form a movable seal with the conical hole (6-1-4), and a low-pressure large-stroke spring (6-7) is installed between the hemispherical end of the sliding rod (6-10) and the conical hole (6-1-4).
4. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening of hard rock mass according to claim 2 is characterized in that: the drill bit (6-1) comprises a solid cutting pick (6-1-2) and a hollow cutting pick (6-1-3), wherein the solid cutting pick (6-1-2) and the hollow cutting pick (6-1-3) are arranged according to the following ratio of 2:1 quantity of the hollow cutting teeth (6-1-3) are welded on the front end face of the drill bit (6-1) in an alternating mode, the hollow cutting teeth (6-1-3) are low in height, an internal flow channel is in a conical contraction shape, the hollow cutting teeth are fixedly welded at the outlet position of a drilling flow channel (6-1-1) on the end face of the drill bit (6-1) according to the angle of 30-90 degrees, water jet sprayed by the hollow cutting teeth (6-1-3) rotates to impact rocks to form annular slots, and the solid cutting teeth (6-1-2) extrude and break rock ridges in the middle of the annular slots.
5. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening of hard rock mass according to claim 2 is characterized in that: the center positions of the left side sealing drill rod (6-3) and the right side sealing drill rod (6-6) are processed with threaded holes, the left side of each threaded hole is processed with three tool withdrawal grooves (6-3-10), the right side of each threaded hole is processed with an axial stepped hole (6-3-12), the end face of the valve sleeve (6-3-3) is processed with an inner hexagonal groove (6-3-1) and a threaded hole for installing the valve sleeve (6-3-3) and a pipe thread (6-3-7), the bottom of the packing rubber (6-3-8) is connected with the pipe thread (6-3-7), the annular tool withdrawal groove (6-3-10) is matched with a packing rubber left side fastener (6-3-9), a packing rubber reset spring (6-3-14) and a packing rubber reset sliding block (6-3-13) are installed in the axial stepped hole (6-3-12), the packing rubber reset sliding block (6-3-13) is of a U-shaped structure, the packing rubber reset sliding block (6-3-13) is buckled at the tail end of the packing rubber reset spring (6-3-14), the packing rubber reset sliding block (6-3-13) is connected with a packing rubber stop plate, and a brass sealing rubber reset plate is installed in the top of the packing rubber reset spring (6-3-14), the right fastener (6-3-11) of the packing rubber is embedded into the packing rubber (6-3-8) by five centimeters, the size of an opening at the bottom of the stepped hole (6-3-5) is smaller than the outer diameter of the valve sleeve (6-3-3), the size of the outer diameter of the spring is close to the inner diameter of the valve sleeve (6-3-3), and a T-shaped flow channel (6-3-6) is processed in the valve core (6-3-2).
6. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening of hard rock mass according to claim 2 is characterized in that: the inner surface and the end surface of the rotary slot cutting device (6-5) are both processed with wear-resistant coatings, and the inner part is processed with an inclined flow passage (6-5-2) and a high-pressure nozzle (6-5-3) welded on the surface of the rotary slot cutting device (6-5).
7. The equipment for drilling, slotting and in-situ hole sealing, fracturing and weakening hard rock mass according to claim 3 is characterized in that: the slide rod (6-10) and the valve core (6-3-2) are the same, a T-shaped flow channel is machined in the interior, the slide rod is matched with a low-pressure large-stroke spring (6-7) and is installed in the second-stage connecting drill rod (6-2), and a limiting valve block (6-8) is installed at the tail end of the second-stage connecting drill rod (6-2).
8. An operation method of the equipment for drilling, slotting and in-situ hole sealing and fracturing to weaken hard rock mass comprises the equipment for drilling, slotting and in-situ hole sealing and fracturing to weaken hard rock mass as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps:
s1: adjusting the position of the drill hole: the walking mechanism (1) works to enable the equipment to reach a drilling working surface, and the drilling angle adjusting mechanism (5) is controlled to enable a drill bit (6-1) of the drilling, slotting and fracturing device (6) to be at a preset drilling position and angle;
s2: drilling: the high-pressure water system (2), the rotary driving mechanism (3) and the propelling mechanism (4) are started successively, the high-pressure water system (2) is controlled to output low-pressure water, the low-pressure water sequentially passes through a T-shaped flow passage, a taper hole (6-1-4), a drilling flow passage (6-1-1) and a hollow cutting pick (6-1-3) in a sliding rod (6-10) to impact rocks, the high-pressure water system (3) assists the lower rotary driving mechanism (3) to drive a drill bit (6-1) to rotate to crush the rocks, and the propelling mechanism (4) is gradually propelled along the axial direction of a primary connecting drill rod (7) to finish drilling holes with a certain depth;
s3: slotting: after a drill bit (6-1) drills into a preset position, a propelling mechanism (4) and a rotary driving mechanism (3) are sequentially closed, then the output working pressure of a high-pressure water system (2) is increased, a sliding rod (6-10) moves leftwards under the pushing of high-pressure water to further compress a low-pressure large-stroke spring (6-7), the sliding rod (6-10) is in contact with a conical hole (6-1-4) in the drill bit (6-1) to form sealing, the high-pressure water is prevented from entering the drill bit (6-1) to assist in drilling, in the boosting process of the high-pressure water system (2), the high-pressure water sequentially enters a slotting flow channel (6-4-1), an inclined flow channel (6-5-2) and a high-pressure nozzle (6-5-3) to slot rock, the rotary slotting device (6-5) is pushed to rotate rapidly, and meanwhile, the high-pressure water continuously injects packing rubber (6-3-8) through a valve core (6-2), a valve sleeve (6-3) and a pipe thread (6-3-7);
s4: sealing: along with the continuous rise of the pressure, the packing rubber (6-3-8) expands, the right packing rubber fastener (6-3-11) drives the packing rubber stop plate (6-3-15) to move leftwards and compress the packing rubber return spring (6-3-14) until the hole sealing rubber (6-3-8) on the two sides of the rotary slotting device (6-5) expands to contact with the hole wall to form a sealing space, high-pressure water pushes the valve core (6-3-2) to move upwards to compress the high-pressure small-stroke spring (6-3-4), the valve core (6-3-2) is in contact with the valve sleeve (6-3-3), a water injection channel of the packing rubber (6-3-8) is closed, and the right sealing device (6-6) and the left sealing device (6-3) have the same working principle;
s5: fracturing and resetting: after the packing rubber (6-3-8) expands to complete the sealing of a fracturing area, the valve core (6-3-2) is in contact with the valve sleeve (6-3-3), a water injection channel of the packing rubber (6-3-8) is cut off, the working pressure of the high-pressure water system (2) is increased, the in-situ fracturing of rocks in the packing area after the cutting is realized, the high-pressure water system (2) is closed until the working pressure of water jet rises steeply, the sliding rod (6-10) is pushed by the low-pressure large-stroke spring (6-7) to move rightwards and reset to the limit valve block (6-8), the valve core (6-3-2) is pushed by the high-pressure small-stroke spring (6-3-4) to move downwards and reset until the valve core (6-3-2) is in contact with the stepped hole (6-3-5), the water injection channel at the top of the valve sleeve (6-3-3) is opened, and the packing rubber (6-3-1) restores to the original state under the reasonable action of the self elastic contraction force and the packing rubber reset spring (6-3-14);
s6: and (3) repeating the steps S2, S3, S4 and S5 to finish the slotting, hole sealing and fracturing of the drilling holes at different depths, so that the complete rock body fracturing is divided into thin plate-shaped weakened rock body strength, and after the slotting and hole sealing fracturing of the rock body at the specific position are finished, the step S1 is switched to change the drilling position or angle to continue the rock body weakening construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512314.0A CN115874926A (en) | 2022-11-29 | 2022-11-29 | Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211512314.0A CN115874926A (en) | 2022-11-29 | 2022-11-29 | Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115874926A true CN115874926A (en) | 2023-03-31 |
Family
ID=85764649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211512314.0A Pending CN115874926A (en) | 2022-11-29 | 2022-11-29 | Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115874926A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116752902A (en) * | 2023-08-10 | 2023-09-15 | 山东省地矿工程集团有限公司 | Horizontal directional drilling equipment for improving drilling precision |
| CN117468863A (en) * | 2023-11-21 | 2024-01-30 | 中煤新集能源股份有限公司 | Advanced joint-cutting drilling device for tunnel roof construction |
-
2022
- 2022-11-29 CN CN202211512314.0A patent/CN115874926A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116752902A (en) * | 2023-08-10 | 2023-09-15 | 山东省地矿工程集团有限公司 | Horizontal directional drilling equipment for improving drilling precision |
| CN116752902B (en) * | 2023-08-10 | 2023-10-20 | 山东省地矿工程集团有限公司 | Horizontal directional drilling equipment for improving drilling precision |
| CN117468863A (en) * | 2023-11-21 | 2024-01-30 | 中煤新集能源股份有限公司 | Advanced joint-cutting drilling device for tunnel roof construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115874926A (en) | Equipment for weakening hard rock mass through drilling, slotting and in-situ hole sealing and fracturing and operation method | |
| CN110617044B (en) | Ultrahigh-pressure water jet slotting system and using method thereof | |
| KR101282945B1 (en) | Tunnel Boring Machine | |
| CN110259474B (en) | Double-hob hydraulic-mechanical TBM cutter head combined rock breaking method and tunneling equipment thereof | |
| CN101586441B (en) | High-pressure water jet system and method for drilling and enlarging holes on coal bed | |
| CN111022049B (en) | Operation-controllable roof-cutting pressure-relief gob-side entry retaining method | |
| CN110195580B (en) | Gas-liquid two-phase combined coal bed permeability increasing method | |
| CN110630181B (en) | Coal seam reaming and permeability increasing method utilizing pneumatic coupling effect | |
| CN103244119A (en) | Distribution method and distribution structure of high-pressure water jet in heading machine cutterhead | |
| CN110566120B (en) | Multi-power directional combined drilling tool for hard rock of coal mine underground coal seam bottom plate and hole forming method thereof | |
| CN107023295B (en) | Hard coal erosion-prevention pressure-relief drilling construction method and equipment | |
| CN110318766A (en) | Machinery-waterpower combined-breaking rock TBM digging device and its driving method | |
| CN102094668A (en) | High-pressure hydraulic drilling, pressure releasing and protrusion removing method for upper drainage roadway | |
| CN110529134A (en) | High-pressure hydraulic auxiliary driving cutterhead for balancing earth-pressure shielding machine | |
| CN115726781A (en) | Equipment for in-situ drilling, cutting and weakening rock mass and operation method | |
| CN114961684A (en) | Coal seam permeability increasing and scour prevention cooperative continuous operation method with rock burst dangerous top plate | |
| CN114033367A (en) | Flow channel switching type spray head and drilling and deslagging system and method based on spray head | |
| CN210685991U (en) | Mechanical-hydraulic combined rock breaking TBM tunneling equipment | |
| CN216841628U (en) | Integrated water jet system's all-in-one of digging anchor | |
| Pickering et al. | Controlled foam injection: A new and innovative non-explosive rockbreaking technology | |
| CN211777201U (en) | Supercritical liquid nitrogen jet hard rock drilling device | |
| CN113605899A (en) | Tunnel excavation method based on hydraulic impact crushing and static crushing | |
| CN113217003A (en) | Drilling and expanding cracking machine and drilling, expanding cracking and tunneling composite rock breaking method | |
| CN208554501U (en) | A kind of push-bench with crusher chamber | |
| CN105863662A (en) | Tunnel boring machine tunneling method and trenchless tunnel boring machine applying same |
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 |