CN117588261B - Method for sensing ground stress concentration of coal mine tunnel digging and anchoring integrated working face - Google Patents
Method for sensing ground stress concentration of coal mine tunnel digging and anchoring integrated working face Download PDFInfo
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- CN117588261B CN117588261B CN202311360381.XA CN202311360381A CN117588261B CN 117588261 B CN117588261 B CN 117588261B CN 202311360381 A CN202311360381 A CN 202311360381A CN 117588261 B CN117588261 B CN 117588261B
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- 239000003245 coal Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004873 anchoring Methods 0.000 title claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 71
- 230000008447 perception Effects 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims description 15
- 229910000746 Structural steel Inorganic materials 0.000 claims description 7
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 2
- 230000005641 tunneling Effects 0.000 abstract description 16
- 238000011065 in-situ storage Methods 0.000 abstract description 7
- 238000012625 in-situ measurement Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 206010057175 Mass conditions Diseases 0.000 description 3
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Structural Engineering (AREA)
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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- Earth Drilling (AREA)
Abstract
The invention discloses a method for sensing ground stress concentration of an integrated working face of coal mine tunnel digging and anchoring, which comprises the following steps: 1. constructing a geomechanical information device for measuring surrounding rock; 2. constructing a ground stress concentration perception model; 3. breaking coal and rock by measuring a drill rod bit on a surrounding rock geomechanical information device; 4. and collecting surrounding rock geomechanical information by using a surrounding rock geomechanical information measuring device, and sending the surrounding rock geomechanical information into a ground stress concentration sensing model to sense the ground stress concentration. According to the invention, the airborne jumbolter is used as a carrier for measuring the ground stress concentration of the surrounding rock in real time and in situ, the sensing assembly is loaded, the geomechanical information of the surrounding rock can be obtained, the real-time, dynamic and in-situ measurement of the ground stress concentration of the surrounding rock of a tunneling working face is realized, the ground stress concentration is perceived through the ground stress concentration perception model, the current rock condition can be timely obtained, information is provided for timely and dynamic supporting of a roadway, a large amount of manpower and material resources are saved, and the safe and efficient production is ensured.
Description
Technical Field
The invention belongs to the technical field of ground stress sensing of coal mine working faces, and particularly relates to a ground stress concentration sensing method of an integrated working face of coal mine roadway tunneling and anchoring.
Background
The surrounding rock ground stress of the coal mine tunnel driving working face is an endogenous main cause of surrounding rock deformation, is a prerequisite criterion for preventing tunnel roof fall and wall collapse accidents, is generally reflected by ground stress concentration, and is the difference between the maximum main stress and the minimum main stress of a rock mass breaking face, and the greater the ground stress concentration, the easier the rock mass is broken, so that in-situ real-time perception of the surrounding rock ground stress is the fundamental guarantee for improving the driving speed and guaranteeing the coal resource efficient exploitation. The surrounding rock geomechanical environment has the characteristic of a black box, the coal mine tunnel tunneling working face has the dynamic change attribute, the tunneling and anchoring integrated machine is main mechanized equipment for realizing the rapid tunneling of a tunnel in a coal mine, the airborne jumbolter is a key device for implementing surrounding rock support of the tunneling and anchoring integrated machine, and has the advantages of good stability, high drilling speed, stable power and the like, however, the existing airborne jumbolter cannot sense surrounding rock geomechanical information, and the real-time in-situ sensing of the ground stress of the tunneling working face is not yet effectively solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for sensing the ground stress concentration of an integrated working face of a coal mine tunnel, which takes an airborne jumbolter as a carrier for measuring the ground stress concentration of surrounding rock in situ in real time, loads a sensing assembly, can acquire the geomechanical information of the surrounding rock, realizes the real-time, dynamic and in-situ measurement of the ground stress concentration of the surrounding rock of a tunneling working face, can timely acquire the current rock mass condition through a ground stress concentration sensing model, provides information for timely and dynamic supporting the tunnel, saves a great amount of manpower and material resources, ensures safe and efficient production, and is convenient to popularize and use.
In order to solve the technical problems, the invention adopts the following technical scheme: the method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face is characterized by comprising the following steps of:
step one, constructing a geomechanical information device for measuring surrounding rock, wherein the geomechanical information device for measuring surrounding rock comprises an onboard jumbolter bracket, a guide rail for a drilling box to move is arranged in the onboard jumbolter bracket, a hydraulic motor and a controller are arranged in the drilling box, an output shaft of the hydraulic motor is connected with a drill rod through a coupler, a drill bit is arranged at the front end of the drill rod, a torque sensor is arranged between the drill rod and the coupler, a torque sensor base of the torque sensor is connected with the top of the drilling box through an L-shaped angle iron, a rotating speed sensor is arranged on the L-shaped angle iron, and magnetic steel matched with the rotating speed sensor is arranged on the outer side of the coupler;
the front end of the airborne jumbolter support is provided with a thrust sensor, the inner surface of the front end of the airborne jumbolter support is provided with a concave support for installing a thrust speed sensor assembly, the thrust speed sensor assembly comprises a speed sensor arranged in the concave support and a measuring rod extending into the concave support and connected with the speed sensor, the measuring rod is arranged in parallel with a guide rail, an induction magnetic ring is arranged on the measuring rod and connected with the magnetic ring support through a non-magnetic-conductive gasket, the magnetic ring support is connected with a clamp through a pin, and the clamp is fixed on the outer side of a drilling box;
the signal output ends of the thrust sensor, the speed sensor, the torque sensor and the rotating speed sensor are all connected with the signal input end of the controller;
step two, constructing a ground stress concentration sensing model, wherein the process is as follows:
step 201, according to formula P N ＝τ(S 1 +S 2 ) Calculating the crushing strength P of the axial rock mass N Wherein τ is the shear failure strength of the first rock mass andalpha is the shear failure angle, sigma 1 Is the first ground stress concentration, S 1 Is the axial pressing area of the front cutter face of the drill bit and S 1 ＝πR 2 sin theta, theta is the back cutter angle of the cutting edge of the drill, R is the radius of the drill, S 2 Is the axial pressing area of the rear cutter face of the drill bit and is +.>
Thus is turned into
Step 202, according to the formulaCalculating the first ground stress concentration +.>Wherein F is N The thrust force is exerted on the drill bit;
step 203, according to formula P S ＝τ'S 3 Calculating tangential rock mass breaking strength P S Wherein τ' is the shear failure strength of the second rock mass andsigma' is the second ground stress concentration, S 3 Is the tangential press-in area of the front cutter face of the drill bit and S 3 ＝πR 2 cosθ；
Thus is turned into
Step 204, according to the formulaCalculating the second ground stress concentration +.>Wherein T is the torque applied to the drill bit;
step 205, constructing a ground stress concentration perception model sigma=max (sigma) 1 - σ'), wherein Max (·) is a maximum function;
step three, breaking coal and rock through a drill rod drill bit on a geomechanical information device for measuring surrounding rock;
and fourthly, acquiring surrounding rock geomechanical information by using a surrounding rock geomechanical information measuring device, and sending the surrounding rock geomechanical information into a ground stress concentration sensing model to sense the ground stress concentration, wherein the surrounding rock geomechanical information comprises the thrust born by the drill bit and the torque born by the drill bit.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: the drill bit is a polycrystalline diamond compact anchor rod drill bit, and the polycrystalline diamond compact anchor rod drill bit is connected with the drill rod through a flat key.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: and a push force sensor protective shell for protecting the push force sensor is arranged at the front end of the support of the airborne jumbolter.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: and a through hole for extending a drill rod is formed in the front end of the support of the airborne jumbolter.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: the guide rail is sleeved with a sleeve, and the outer wall of the drill box is connected with the outer wall of the sleeve.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: the controller is a PLC controller, the output end of the controller is connected with a display and a communication module, and the display is arranged on the outer side of the drill box.
The method for sensing the ground stress concentration degree of the coal mine roadway tunneling and anchoring integrated working face is characterized by comprising the following steps of: in step 202, a first ground stress concentrationWherein P is the power of a hydraulic motor, and v is the propelling speed of a drill bit;
in step 204, a second ground stress concentrationWherein n is the rotation speed of the hydraulic motor;
in the fourth step, the geomechanical information of the surrounding rock further comprises the drill bit propelling speed and the hydraulic motor rotating speed.
The invention has the advantages that the airborne jumbolter is used as a carrier for measuring the ground stress concentration of the surrounding rock in real time and in situ, the sensing assembly is loaded, the geomechanical information of the surrounding rock can be obtained, the real-time, dynamic and in-situ measurement of the ground stress concentration of the surrounding rock of the tunneling working face is realized, the ground stress concentration is perceived through the ground stress concentration perception model, the current rock mass condition can be timely obtained, the information is provided for timely and dynamic supporting tunnel, a large amount of manpower and material resources are saved, the safe and efficient production is ensured, and the popularization and the use are convenient.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic structural view of the airborne jumbolter of the present invention.
Fig. 2 is a right side view of fig. 1.
FIG. 3 is a schematic view of a torque sensor installation of the present invention.
Fig. 4 is a schematic block diagram of the circuit of the present invention.
Fig. 5 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1-a push force sensor protective shell; 2-a support of the airborne jumbolter; 3-concave support;
4-a thrust sensor; 5-a speed sensor; 6, a drill bit;
7, a drill rod; 8-a torque sensor; 9-a torque sensor base;
10-L-shaped angle iron; 11-a rotation speed sensor; 12-measuring bar;
13-a coupling; 14-induction magnetic ring; 15-a non-magnetic conductive gasket;
16-a magnetic ring bracket; 17-pins; 18, a drilling box;
19-clamping; 20-a controller; 21-magnetic steel;
22-a guide rail; 23-a sleeve; 24-through holes;
25-a display; 26-a communication module.
Detailed Description
As shown in fig. 1 to 5, the method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face comprises the following steps:
step one, constructing a geomechanical information device for measuring surrounding rock, wherein the geomechanical information device for measuring surrounding rock comprises an onboard jumbolter bracket 2, a guide rail 22 for moving a drilling box 18 is arranged in the onboard jumbolter bracket 2, a hydraulic motor and a controller 20 are arranged in the drilling box 18, an output shaft of the hydraulic motor is connected with a drill rod 7 through a coupler 13, a drill bit 6 is arranged at the front end of the drill rod 7, a torque sensor 8 is arranged between the drill rod 7 and the coupler 13, a torque sensor base 9 of the torque sensor 8 is connected with the top of the drilling box 18 through an L-shaped angle iron 10, a rotating speed sensor 11 is arranged on the L-shaped angle iron 10, and magnetic steel 21 matched with the rotating speed sensor 11 is arranged on the outer side of the coupler 13;
the front end of the airborne jumbolter support 2 is provided with a thrust sensor 4, the inner surface of the front end of the airborne jumbolter support 2 is provided with a concave support 3 for installing a thrust speed sensor assembly, the thrust speed sensor assembly comprises a speed sensor 5 arranged in the concave support 3 and a measuring rod 12 extending into the concave support 3 and connected with the speed sensor 5, the measuring rod 12 is arranged in parallel with a guide rail 22, the measuring rod 12 is provided with an induction magnetic ring 14, the induction magnetic ring 14 is connected with a magnetic ring support 16 through a non-magnetic conductive gasket 15, the magnetic ring support 16 is connected with a clamp 19 through a pin 17, and the clamp 19 is fixed on the outer side of a drilling box 18;
the signal output ends of the thrust sensor 4, the speed sensor 5, the torque sensor 8 and the rotating speed sensor 11 are all connected with the signal input end of the controller 20;
step two, constructing a ground stress concentration sensing model, wherein the process is as follows:
step 201, according to formula P N ＝τ(S 1 +S 2 ) Calculating the crushing strength P of the axial rock mass N Wherein τ is the shear failure strength of the first rock mass andalpha is the shear failure angle, sigma 1 Is the first ground stress concentration, S 1 Is the axial pressing area of the front cutter face of the drill bit and S 1 ＝πR 2 sin theta, theta is the back cutter angle of the cutting edge of the drill, R is the radius of the drill, S 2 Is the axial pressing area of the rear cutter face of the drill bit and is +.>
Thus is turned into
Step 202, according to the formulaCalculating the first ground stress concentration +.>Wherein F is N The thrust force is exerted on the drill bit;
step 203, according to formula P S ＝τ'S 3 Calculating tangential rock mass breaking strength P S Wherein τ' is the shear failure strength of the second rock mass andsigma' is the second ground stress concentration, S 3 Is the tangential press-in area of the front cutter face of the drill bit and S 3 ＝πR 2 cosθ；
Thus is turned into
Step 204, according to the formulaCalculating the second ground stress concentration +.>Wherein T is the torque applied to the drill bit;
step 205,Constructing ground stress concentration perception model sigma=max (sigma 1 - σ'), wherein Max (·) is a maximum function;
step three, breaking coal and rock through a drill rod drill bit on a geomechanical information device for measuring surrounding rock;
and fourthly, acquiring surrounding rock geomechanical information by using a surrounding rock geomechanical information measuring device, and sending the surrounding rock geomechanical information into a ground stress concentration sensing model to sense the ground stress concentration, wherein the surrounding rock geomechanical information comprises the thrust born by the drill bit and the torque born by the drill bit.
In this embodiment, the drill bit 6 is a polycrystalline diamond compact anchor bit, and the polycrystalline diamond compact anchor bit is connected with the drill rod 7 through a flat key.
In this embodiment, a thrust sensor protective shell 1 for protecting a thrust sensor 4 is installed at the front end of the airborne jumbolter support 2.
In this embodiment, a through hole 24 for extending a drill rod is formed at the front end of the onboard jumbolter bracket 2.
In this embodiment, the guide rail 22 is sleeved with a sleeve 23, and the outer wall of the drill box 18 is connected with the outer wall of the sleeve 23.
In this embodiment, the controller 20 is a PLC controller, an output end of the controller 20 is connected with a display 25 and a communication module 26, and the display 25 is installed outside the drill box 18.
In this embodiment, in step 202, a first ground stress concentration is obtainedWherein P is the power of a hydraulic motor, and v is the propelling speed of a drill bit;
in step 204, a second ground stress concentrationWherein n is the rotation speed of the hydraulic motor;
in the fourth step, the geomechanical information of the surrounding rock further comprises the drill bit propelling speed and the hydraulic motor rotating speed.
When the invention is used, the airborne jumbolter is used as a carrier for measuring the ground stress concentration of the surrounding rock in real time and in situ, the sensing assembly is loaded, the geomechanical information of the surrounding rock can be obtained, the real-time, dynamic and in-situ measurement of the ground stress concentration of the surrounding rock of a tunneling working face is realized, the current rock mass condition can be timely obtained through the ground stress concentration sensing model, the information is provided for a timely dynamic supporting roadway, a large amount of manpower and material resources are saved, the production safety and high efficiency are ensured, the underground direct sensing of the ground stress is difficult, the thrust force is obtained through the thrust sensor, the torque is obtained through the torque sensor, the relation between the drill bit thrust speed and the hydraulic motor rotating speed is obtained, the main ground stress concentration of the surrounding rock can be timely reflected in-situ by various drilling parameters, the surrounding rock condition is sensed before the supporting construction, and the dynamic supporting is finally realized.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
1. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face is characterized by comprising the following steps of:
step one, constructing a geomechanical information device for measuring surrounding rock, wherein the geomechanical information device for measuring surrounding rock comprises an onboard jumbolter bracket (2), a guide rail (22) for a drilling box (18) to move is arranged in the onboard jumbolter bracket (2), a hydraulic motor and a controller (20) are arranged in the drilling box (18), an output shaft of the hydraulic motor is connected with a drill rod (7) through a coupler (13), a drill bit (6) is arranged at the front end of the drill rod (7), a torque sensor (8) is arranged between the drill rod (7) and the coupler (13), a torque sensor base (9) of the torque sensor (8) is connected with the top of the drilling box (18) through an L-shaped angle iron (10), a rotating speed sensor (11) is arranged on the L-shaped angle iron (10), and magnetic steel (21) matched with the rotating speed sensor (11) is arranged on the outer side of the coupler (13);
the front end of the airborne jumbolter support (2) is provided with a thrust sensor (4), the inner surface of the front end of the airborne jumbolter support (2) is provided with a concave support (3) for installing a thrust speed sensor assembly, the thrust speed sensor assembly comprises a speed sensor (5) arranged in the concave support (3) and a measuring rod (12) extending into the concave support (3) and connected with the speed sensor (5), the measuring rod (12) is arranged in parallel with a guide rail (22), the measuring rod (12) is provided with an induction magnetic ring (14), the induction magnetic ring (14) is connected with a magnetic ring support (16) through a non-magnetic-conductive gasket (15), the magnetic ring support (16) is connected with a clamp (19) through a pin (17), and the clamp (19) is fixed on the outer side of a drilling box (18);
the signal output ends of the thrust sensor (4), the speed sensor (5), the torque sensor (8) and the rotating speed sensor (11) are connected with the signal input end of the controller (20);
step two, constructing a ground stress concentration sensing model, wherein the process is as follows:
step 201, according to the formulaCalculating the crushing strength of the axial rock mass>Wherein->Is the shear failure strength of the first rock mass and +.>，/>For shear failure angle->For the first ground stress concentration, +.>Axially pressing the front tool face of the drill bitArea of entry and->，/>Is the back angle of the cutting edge of the drill bit, +.>For the radius of the drill bit>Is the axial pressing area of the rear cutter face of the drill bit and is +.>；
Thus is turned into；
Step 202, according to the formulaCalculating the first ground stress concentration +.>Wherein->The thrust force is exerted on the drill bit;
step 203, according to the formulaCalculating tangential rock mass breaking strength +.>Wherein->Is the shear failure strength of the second rock mass and +.>，/>For the second ground stress concentration, +.>Is the tangential pressed area of the front cutter face of the drill bit；
Thus is turned into；
Step 204, according to the formulaCalculating the second ground stress concentrationWherein->The torque applied to the drill bit;
step 205, constructing a ground stress concentration perception modelWherein->Is a maximum function;
step three, breaking coal and rock through a drill rod drill bit on a geomechanical information device for measuring surrounding rock;
and fourthly, acquiring surrounding rock geomechanical information by using a surrounding rock geomechanical information measuring device, and sending the surrounding rock geomechanical information into a ground stress concentration sensing model to sense the ground stress concentration, wherein the surrounding rock geomechanical information comprises the thrust born by the drill bit and the torque born by the drill bit.
2. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: the drill bit (6) is a polycrystalline diamond composite sheet anchor bit, and the polycrystalline diamond composite sheet anchor bit is connected with the drill rod (7) through a flat key.
3. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: the front end of the airborne jumbolter support (2) is provided with a thrust sensor protective shell (1) for protecting the thrust sensor (4).
4. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: the front end of the onboard jumbolter bracket (2) is provided with a through hole (24) for a drill rod to extend out.
5. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: the guide rail (22) is sleeved with a sleeve (23), and the outer wall of the drill box (18) is connected with the outer wall of the sleeve (23).
6. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: the controller (20) is a PLC controller, the output end of the controller (20) is connected with a display (25) and a communication module (26), and the display (25) is arranged on the outer side of the drill box (18).
7. The method for sensing the ground stress concentration of the coal mine tunnel digging and anchoring integrated working face according to claim 1, which is characterized by comprising the following steps of: in step 202, a first ground stress concentrationWherein->For hydraulic motor power, ">The drill bit advancing speed;
in step 204, a second ground stress concentrationWherein->The rotation speed of the hydraulic motor;
in the fourth step, the geomechanical information of the surrounding rock further comprises the drill bit propelling speed and the hydraulic motor rotating speed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311360381.XA CN117588261B (en) | 2023-10-19 | 2023-10-19 | Method for sensing ground stress concentration of coal mine tunnel digging and anchoring integrated working face |
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| CN202311360381.XA CN117588261B (en) | 2023-10-19 | 2023-10-19 | Method for sensing ground stress concentration of coal mine tunnel digging and anchoring integrated working face |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644482A (en) * | 2012-05-18 | 2012-08-22 | 河南大有能源股份有限公司 | Rock burst predicting and warning method |
| CN103061766A (en) * | 2013-01-11 | 2013-04-24 | 河南理工大学 | Method for preventing and controlling coalbed rockburst through chemical reaction |
| CA3044307A1 (en) * | 2017-05-10 | 2018-11-15 | China University Of Mining And Technology | Stress-transfer method in tunnel with high ground pressure based on fracturing ring |
| WO2019119899A1 (en) * | 2017-12-18 | 2019-06-27 | 中国矿业大学 | Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action |
-
2023
- 2023-10-19 CN CN202311360381.XA patent/CN117588261B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644482A (en) * | 2012-05-18 | 2012-08-22 | 河南大有能源股份有限公司 | Rock burst predicting and warning method |
| CN103061766A (en) * | 2013-01-11 | 2013-04-24 | 河南理工大学 | Method for preventing and controlling coalbed rockburst through chemical reaction |
| CA3044307A1 (en) * | 2017-05-10 | 2018-11-15 | China University Of Mining And Technology | Stress-transfer method in tunnel with high ground pressure based on fracturing ring |
| WO2019119899A1 (en) * | 2017-12-18 | 2019-06-27 | 中国矿业大学 | Device and method for testing working performance of anchor rod cable by simulating rock stratum fracture and separation on basis of electromagnetic action |
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| CN117588261A (en) | 2024-02-23 |
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