CN115077607A - Intelligent identification system and method for lithology of coal mine roadway surrounding rock while drilling - Google Patents
Intelligent identification system and method for lithology of coal mine roadway surrounding rock while drilling Download PDFInfo
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- CN115077607A CN115077607A CN202210654898.9A CN202210654898A CN115077607A CN 115077607 A CN115077607 A CN 115077607A CN 202210654898 A CN202210654898 A CN 202210654898A CN 115077607 A CN115077607 A CN 115077607A
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Abstract
The invention discloses a system and a method for intelligently identifying surrounding rock lithology while drilling of a coal mine tunnel, which relate to the technical field of mining and comprise a test piece platform, a data acquisition system, a data processing system, a power control system and a drilling system; the test piece table is used for clamping and fixing a rock test piece, the test piece table and the drilling system are arranged on the same horizontal plane, and the central axis is kept horizontal; the data acquisition system is used for acquiring rotation pressure and propulsion signals of the drilling system in the drilling process of the rock test piece; the data processing system is electrically connected with the data acquisition system and is used for receiving and processing sensor signals of the data acquisition system; the power control system provides working power for the whole test system; the invention realizes intelligent tests such as lithology identification, automatic control, blasting parameter optimization and the like in the field of mine roadway tunneling and punching operation, greatly reduces workload, improves labor environment, improves safety coefficient and operation efficiency, and has important practical engineering and scientific research significance.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a system and a method for intelligently identifying surrounding rock lithology while drilling of a coal mine tunnel.
Background
At present, in the technical field of mining, 4 coal mining modes of intelligent unmanned mining of thin and medium-thick coal seams, intelligent coupling of a working face with man-machine cooperation, efficient fully mechanized mining, intelligent control of a fully mechanized caving working face and manual intervention auxiliary coal caving, and mechanized and intelligent mining under complex conditions are formed. Because of complicated and diversified conditions, different mining difficulty degrees of underground coal rock layers and slow intelligent process of roadway tunneling, the intelligent process is influenced by special environment and complicated construction process, the current coal roadway tunneling working face is mainly mechanized, and rock mechanical parameters and structural characteristics are basic basis for classification of underground engineering surrounding rocks, design of support parameters, stability analysis and design of support.
The existing roadway excavation trolley has a single function and insufficient intelligent degree, workers are required to implement operation under specific conditions, and various required switches and operations are very complex. Therefore, the problems of low efficiency, unreasonable blasting parameter design, high labor intensity, low equipment intelligence degree and the like exist in the traditional mine rock roadway tunneling. With the rapid development of artificial intelligence technology, the gradual improvement of computer perception, calculation and control technology, the requirement on the roadway trolley is gradually improved, and the single drilling function needs to be changed urgently.
Disclosure of Invention
The invention aims to provide a system and a method for intelligently identifying the lithology of surrounding rocks of a coal mine roadway while drilling, which aim to solve the problems in the prior art, combine a trolley with a computer intelligent technology to determine the surrounding rock parameters of the coal mine roadway in real time, greatly improve the roadway tunneling efficiency, increase the accuracy of the surrounding rock supporting parameters, reduce the labor intensity and greatly ensure the construction safety.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides an intelligent identification system for lithology of surrounding rocks of a coal mine tunnel while drilling, which comprises a test piece table, a data acquisition system, a data processing system, a power control system and a drilling system, wherein the test piece table is used for acquiring surrounding rocks of the coal mine tunnel;
the test piece table is used for clamping and fixing a rock test piece, the test piece table and the drilling system are arranged on the same horizontal plane, and the central axis is kept horizontal;
the data acquisition system is used for acquiring rotation pressure and propulsion signals of the drilling system in the drilling process of the rock test piece; the data processing system is electrically connected with the data acquisition system and is used for receiving and processing sensor signals of the data acquisition system;
the power control system provides working power for the whole test system.
Preferably, the test piece platform comprises a rock test piece, a confining pressure loading device, a support, a rear support rod and a first base, the support is arranged at the top of the first base, the rock test piece is arranged in the support, the confining pressure loading device is fixed around the rock test piece through the support, and the rear support rod penetrates through the tail end of the support and is supported at the tail end of the rock test piece for providing a stable supporting effect.
Preferably, the confining pressure loading device comprises three pressing plates which are respectively positioned at the top and two sides of the rock test piece, the three pressing plates are in threaded connection with the corresponding supports through screws, and handles are arranged at the tail ends of the screws; the head end of back bracing piece is provided with the support the backup pad of rock test piece, back bracing piece with support threaded connection, the tail end of back bracing piece also is provided with the handle.
Preferably, the data acquisition system comprises a torque-rotation speed sensor, a pull rope displacement sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor;
the torque-rotating speed sensor is used for collecting a torque signal and a rotating speed signal in the drilling process;
the pull rope displacement sensor is arranged behind a slide rail of the drilling system and is connected with a hydraulic motor of the drilling system through a pull rope, and the pull rope moves forwards and backwards along with the hydraulic motor in the drilling process to monitor the movement displacement in real time;
the first pressure sensor is connected between an oil inlet of the hydraulic motor and a rotation control port A of a multi-way control valve of the power control system through a second hydraulic oil inlet pipe, and the rotation oil inlet pressure of the hydraulic motor is monitored; the second pressure sensor is connected between an oil return port of the hydraulic motor and a rotation control port B of the multi-way control valve through a second hydraulic oil return pipe, and rotation oil return pressure of the hydraulic motor is monitored; the third pressure sensor is connected to an oil inlet of a propulsion oil cylinder of a drilling system through a first hydraulic oil inlet pipe and is connected to a propulsion control port A of the multi-way control valve, the propulsion oil pressure of the propulsion oil cylinder is monitored, and the fourth pressure sensor is connected to an oil return port of the propulsion oil cylinder and a propulsion control port B of the multi-way control valve through a first hydraulic oil return pipe and is used for monitoring the backward oil pressure of the propulsion oil cylinder.
Preferably, the data processing system comprises a display instrument, a data processing center, a data acquisition card, a signal converter and a power transformer which are connected with each other through signal lines, and the data processing system is connected with each sensor in the data acquisition system through the signal lines and is used for receiving and processing sensor signals;
the power transformer is used for converting the working voltage of the data processing system, so that the system has adaptability under different working voltage environments, and the signal converter is used for converting analog quantity signals acquired by the data acquisition system into digital quantity signals and visualizing the signals; the data processing center also comprises a data acquisition module, a data processing module and a feedback control module, and is used for recording and processing data transmitted back by the data acquisition system in real time and feeding back and regulating the working state of the whole machine body in real time through an intelligent algorithm in the feedback control module.
Preferably, the power control system comprises a motor, a water pump, an oil tank, an electromagnetic valve, a control starter, a propulsion control handle, a rotary control handle, a multi-way control valve, a hydraulic display meter and a main power pump, wherein the motor is rigidly connected with the main power pump, the main power pump is circularly connected with the electromagnetic valve, the oil tank and the multi-way control valve through hydraulic oil pipes to provide power for the whole system, the control starter is connected with the motor through a power line and is used for controlling the working state of the motor, and the hydraulic display meter is connected with the multi-way control valve through a signal line and is used for monitoring the oil pressure state of the power control system and providing an alarm function;
the propulsion control handle and the rotation control handle are connected with the multi-path control valve, and different hydraulic oil flows are given to a hydraulic motor of the drilling system by controlling the opening and closing degree of the rotation control handle, so that different initial rotation speeds are controlled; by controlling the opening and closing degree of the propulsion control handle, different hydraulic oil flows are given to a propulsion oil cylinder of the drilling system, so that different initial propulsion forces are controlled;
the water pump is connected with a power head of the drilling system through a water pipe, provides flushing liquid for the drill bit in the drilling process, and provides different flushing liquid pressures through different rotating speeds.
Preferably, the drilling system comprises a drill bit, a drill rod, a slide rail, a propulsion cylinder, a power head, a hydraulic motor, a limiting plate, a second base and a hinge shaft, the drill bit is in threaded connection with the drill rod, a torque-speed sensor is in rigid connection with the drill rod through a first coupler and is in rigid connection with the power head through a second coupler, the hydraulic motor, the power head and the torque-speed sensor are in sliding connection above the slide rail, the hydraulic motor is connected with the power head through a pin bolt, a rotating force provided by the hydraulic motor drives the power head and the drill bit to integrally rotate, the propulsion cylinder is arranged on the inner side of the slide rail, the hydraulic motor, the power head and the torque-speed sensor are controlled to move forwards or backwards along the slide rail through the extension and retraction of the propulsion cylinder, the limiting plate is arranged at the head end of the slide rail, and the sliding rail is connected with the second base through the articulated shaft.
Preferably, a hydraulic oil cylinder capable of controlling the slide rail to lift is arranged in the hinged shaft, the hinged shaft is used for controlling the transverse rotation and the longitudinal deviation of the slide rail, and different drilling directions of a drilling system are controlled by controlling different angles of the hinged shaft so as to meet the actual engineering requirements.
Preferably, the middle of the drill rod is provided with a threaded connection port, and a plurality of drill rods with different lengths can be connected to meet different drilling depth requirements.
Based on the intelligent identification system for the lithology while drilling of the coal mine roadway surrounding rock, the invention also provides an intelligent identification method for the lithology while drilling of the coal mine roadway surrounding rock, which comprises the following steps:
1) firstly, placing a rock test piece on a test piece table, applying confining pressure to the rock test piece by screwing a confining pressure loading device in the X direction and the Z direction, and fixing a rear supporting rod behind the rock for providing supporting force in the drilling process;
2) starting a control starter, adjusting a motor to drive a main power pump to start working, and ensuring the stability of the whole oil pressure running state of the power control system;
3) adjusting a drill bit to a position close to the contact position of the rock test piece, giving the initial rotation amount of a hydraulic motor of a drilling system and the initial propelling oil pressure of a propelling oil cylinder by controlling a multi-path control valve, a rotary control handle and a propelling control handle to obtain constant propelling force, and starting drilling;
4) in the drilling process, in the data acquisition system, a torque-rotating speed sensor, a pull rope displacement sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor synchronously acquire drilling parameters in real time, record data through a data processing system and obtain while-drilling parameters through a data processing module of a data processing center;
5) and simulating and inverting rock mechanical parameters according to the while-drilling parameters to obtain different rock stratum information so as to obtain lithology of the drilling process in different rocks, adopting different drilling parameters by calculating lithology of different rocks, feeding back control signals to the drilling system in real time, and intelligently regulating and controlling the drilling state of the drilling system.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the intelligent identification system for the lithology while drilling of the surrounding rock of the coal mine tunnel is based on a jumbo jumbolter for tunneling the coal mine tunnel and comprises a test piece table, a data acquisition system, a data processing system, a power control system and a drilling system, wherein the data acquisition system acquires a rotating pressure signal and a propelling force signal of the drilling system in the drilling process of a rock test piece; then, receiving and processing a sensor signal of the data acquisition system through the data processing system; by combining a sensor sensing technology and an intelligent control technology and utilizing a mode of processing and analyzing data by a block chain network, manpower and material resources are greatly saved, and the improvement of equipment intellectualization is facilitated; by acquiring drilling parameters in real time and inverting rock mechanical parameters, the lithology and the surrounding rock state of the surrounding rock of the roadway can be acquired, the traditional rock mechanical parameter detection method is effectively improved, and the roadway tunneling efficiency is greatly improved; the real-time drilling data received by the data processing center is used for obtaining rock parameters and then feeding back and controlling the drilling of the drilling machine in real time, so that the drilling parameters such as the drilling speed, the rotating speed and the like are regulated and controlled, the drilling efficiency is improved, and the failure rate in the drilling process is reduced.
2. The drilling system is not limited to indoor tests, the drilling system can be applied to on-site surrounding rock drilling after the base device of the drilling system is replaced, the drilling direction can be arranged in multiple angles and multiple directions through the hinge shaft, and the stability and the flexibility of equipment are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an intelligent identification system for lithology while drilling of surrounding rocks of a coal mine tunnel;
FIG. 2 is a front view of the test piece stand of FIG. 1;
FIG. 3 is a right side view of the test piece station of FIG. 1;
FIG. 4 is a block diagram of the data processing system of FIG. 1;
FIG. 5 is a schematic diagram of the configuration of the power control system of FIG. 1;
FIG. 6 is a schematic illustration of the configuration of the drilling system of FIG. 1;
in the figure: 1-a test piece table, 2-a data processing system, 3-a power control system, 4-a drilling system, 5-a torque-rotating speed sensor, 6-a first pressure sensor, 7-a second pressure sensor, 8-a pull rope displacement sensor, 9-a first hydraulic oil inlet pipe, 10-a first hydraulic oil return pipe, 11-a fourth pressure sensor, 12-a third pressure sensor, 13-a signal line, 14-a second hydraulic oil inlet pipe and 15-a second hydraulic oil return pipe;
101-a rock test piece, 102-a confining pressure loading device, 103-a bracket, 104-a rear supporting rod and 105-a first base;
201-a display instrument, 202-a data processing center, 203-a data acquisition card, 204-a signal converter, 205-a power transformer;
301-motor, 302-water pump, 303-oil tank, 304-electromagnetic valve, 305-control starter, 306-propulsion control handle, 307-rotation control handle, 308-multi-way control valve, 309-hydraulic display meter, 310-main power pump, 311-power line, 312-hydraulic oil pipe;
401, a drill bit, 402, a drill rod, 403, a propulsion oil cylinder, 404, a power head, 405, a hydraulic motor, 406, a limiting plate, 407, a second base, 408, a hinge shaft and 409, wherein the sliding rail is arranged on the drill head;
501-first coupling, 502-second coupling.
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.
The invention aims to provide a system and a method for intelligently identifying surrounding rock lithology while drilling of a coal mine roadway, and aims to solve the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The intelligent identification system for the lithology while drilling of the coal mine roadway surrounding rock in the embodiment is shown in fig. 1 and comprises a test piece table 1, a data acquisition system, a data processing system 2, a power control system 3 and a drilling system 4;
the test piece table 1 is used for clamping and fixing a rock test piece 101, the test piece table 1 and the drilling system 4 are arranged on the same horizontal plane, and the central axis is kept horizontal;
the data acquisition system is used for acquiring rotation pressure and propulsion force signals of the drilling system 4 in the drilling process of the rock test piece 101; the data processing system 2 is electrically connected with the data acquisition system and is used for receiving and processing sensor signals of the data acquisition system;
the power control system 3 provides working power for the whole test system.
As shown in fig. 2 and 3, the test piece table 1 includes a rock test piece 101, a confining pressure loading device 102, a support 103, a rear support rod 104 and a first base 105, the support 103 is disposed on the top of the first base 105, the rock test piece 101 is disposed in the support 103, the confining pressure loading device 102 is fixed around the rock test piece 101 through the support 103, and the rear support rod 104 passes through the tail end of the support 103 and is supported at the tail end of the rock test piece 101 for providing a stable supporting function; the confining pressure loading device 102 comprises three pressing plates, the pressing plates are respectively positioned at the top and two sides of the rock test piece 101, the three pressing plates are in threaded connection with corresponding supports 103 through screws, the tail ends of the screws are provided with handles, the pressing plates are tightly pressed against the rock test piece 101 through the screws rotated by the handles, the pressing plate at the top applies confining pressure in the Z direction, and the pressing plates at two sides apply confining pressure in the X direction; the head end of the rear supporting rod 104 is provided with a supporting plate for supporting the rock test piece 101, the rear supporting rod 104 is in threaded connection with the support 103, the tail end of the rear supporting rod is also provided with a handle, and the rear supporting rod 104 can rotate through the handle to move transversely to jack and support the rock test piece 101.
As shown in fig. 1, the data acquisition system includes a torque-rotation speed sensor 5, a pull rope displacement sensor 8, a first pressure sensor 6, a second pressure sensor 7, a third pressure sensor 12 and a fourth pressure sensor 11;
the torque-rotating speed sensor 5 is used for collecting a torque signal and a rotating speed signal in the drilling process;
the stay rope displacement sensor 8 is arranged behind a slide rail 409 of the drilling system 4, the stay rope displacement sensor 8 is connected with a hydraulic motor 405 of the drilling system 4 through a stay rope, and the stay rope moves forwards and backwards along with the hydraulic motor 405 in the drilling process to monitor the movement displacement in real time;
the first pressure sensor 6 is connected between an oil inlet of the hydraulic motor 405 and a rotation control port A of the multi-way control valve 308 of the power control system 3 through a second hydraulic oil inlet pipe 14, and monitors the rotation oil inlet pressure of the hydraulic motor 405; the second pressure sensor 7 is connected between an oil return port of the hydraulic motor 405 and a rotation control port B of the multi-way control valve 308 through a second hydraulic oil return pipe 15, and monitors the rotation oil return pressure of the hydraulic motor 405; the third pressure sensor 12 is connected between an oil inlet of a propulsion oil cylinder 403 of the drilling system 4 and a propulsion control port A of the multi-way control valve 308 through a first hydraulic oil inlet pipe 9 to monitor the propulsion oil pressure of the propulsion oil cylinder 403, and the fourth pressure sensor 11 is connected between an oil return port of the propulsion oil cylinder 403 and a propulsion control port B of the multi-way control valve 308 through a first hydraulic oil return pipe 10 to monitor the retreating oil pressure of the propulsion oil cylinder 403.
As shown in fig. 4, the data processing system 2 includes a display instrument 201, a data processing center 202, a data acquisition card 203, a signal converter 204 and a power transformer 205, which are connected with each other through a signal line 13, and the data processing system 2 is connected with each sensor in the data acquisition system through the signal line 13 for receiving and processing sensor signals;
the power transformer 205 is used for converting the working voltage of the data processing system 2, so that the system has adaptability under different working voltage environments, and the signal converter 204 is used for converting the analog quantity signal acquired by the data acquisition system into a digital quantity signal and visualizing the signal; the data processing center 202 further comprises a data acquisition module, a data processing module and a feedback control module, and is used for recording and processing data transmitted back by the data acquisition system in real time, and feeding back and regulating the working state of the whole machine body in real time through an intelligent algorithm in the feedback control module.
As shown in fig. 5, the power control system 3 includes a motor 301, a water pump 302, an oil tank 303, an electromagnetic valve 304, a control actuator 305, a propulsion control handle 306, a rotation control handle 307, a multi-way control valve 308, a hydraulic display meter 309 and a main power pump 310, the motor 301 is rigidly connected to the main power pump 310, the main power pump 310 is driven by the rotation of the motor 301 to operate to provide oil pressure for the system, the main power pump 310 is circularly connected to the electromagnetic valve 304, the oil tank 303 and the multi-way control valve 308 through a hydraulic oil pipe 312 to provide power for the whole system, the control actuator 305 is connected to the motor 301 through a power line 311 to control the operating state of the motor 301, and the hydraulic display meter 309 is connected to the multi-way control valve 308 through a signal line 13 to monitor the oil pressure state of the power control system 3 and provide an alarm function;
the propulsion control handle 306 and the rotation control handle 307 are connected with a multi-way control valve 308, and different hydraulic oil flows are given to the hydraulic motor 405 by controlling the opening and closing degree of the rotation control handle 307, so that different initial rotation speeds are controlled; by controlling the degree of opening and closing of the propulsion control handle 306, different hydraulic oil flows are given to the propulsion cylinders 403 of the drilling system 4, thereby controlling different initial propulsion forces;
the water pump 302 is connected to a power head 404 of the drilling system 4 via a water line, which provides flushing fluid to the drill bit 401 during drilling, and different flushing fluid pressures at different rotational speeds.
As shown in fig. 6, the drilling system 4 includes a drill bit 401, a drill rod 402, a slide rail 409, a thrust cylinder 403, a power head 404, a hydraulic motor 405, a limit plate 406, a second base 407, and a hinge shaft 408, the drill bit 401 is connected to the drill rod 402 by a screw thread, the torque-speed sensor 5 is rigidly connected to the drill rod 402 by a first coupling 501, and is rigidly connected to the power head 404 by a second coupling 502, the hydraulic motor 405, the power head 404, and the torque-speed sensor 5 are slidably connected above the slide rail 409, the hydraulic motor 405 is connected to the power head 404 by a pin, a rotational force provided by the hydraulic motor 405 drives the power head 404 and the drill bit 401 to integrally rotate, the thrust cylinder 403 is disposed inside the slide rail 409, the hydraulic motor 405, the power head 404, and the torque-speed sensor 5 are controlled to advance or retreat along the slide rail 409 by extension and retraction of the thrust cylinder 403, the limit plate 406 is disposed at a head end of the slide rail 409, to provide a stable support for drill pipe 402, slide rail 409 is connected to second base 407 via hinge shaft 408.
A hydraulic oil cylinder capable of controlling the lifting of the slide rail 409 is arranged in the articulated shaft 408, the transverse rotation and the longitudinal deviation of the slide rail 409 are controlled through the articulated shaft 408, and different drilling directions of the drilling system 4 are controlled through controlling different angles of the articulated shaft 408, so that the actual engineering requirements are met. The lifting height is determined by the height of an internal hydraulic oil cylinder, the size of the oil cylinder can be changed according to different test requirements, the transverse rotation angle of the hinge shaft 408 is 360 degrees, and the longitudinal offset angle is +/-15 degrees.
The middle of the drill rod 402 is provided with a threaded connection port, and a plurality of drill rods 402 with different lengths can be connected to meet different drilling depth requirements.
Based on the intelligent identification system for the lithology while drilling of the coal mine roadway surrounding rock, the embodiment also provides an intelligent identification method for the lithology while drilling of the coal mine roadway surrounding rock, which comprises the following steps:
1) firstly, placing a rock test piece 101 on a test piece table 1, applying confining pressure to the rock test piece 101 by screwing a confining pressure loading device 102 in the X direction and the Z direction, and fixing a rear support rod 104 behind rocks for providing supporting force in a drilling process;
2) starting a control starter 305, adjusting a motor 301 to drive a main power pump 310 to start working, and ensuring the stability of the whole oil pressure operation state of the power control system 3;
3) adjusting the drill bit 401 to be close to the contact position of the rock test piece 101, giving the initial rotation amount to the hydraulic motor 405 of the drilling system 4 and the initial propelling oil pressure to the propelling oil cylinder 403 by controlling the multi-way control valve 308, the rotation control handle and the propelling control handle 306 to obtain a constant propelling force, and starting drilling;
4) in the drilling process, in a data acquisition system, a torque-rotating speed sensor 5, a pull rope displacement sensor 8, a first pressure sensor 6, a second pressure sensor 7, a third pressure sensor 12 and a fourth pressure sensor 11 synchronously acquire drilling parameters in real time, record data through a data processing system 2, and obtain while-drilling parameters through a data processing module of a data processing center 202;
5) and simulating and inverting rock mechanical parameters according to the while-drilling parameters to obtain different rock stratum information so as to obtain lithology of the drilling process in different rocks, adopting different drilling parameters by calculating lithology of different rocks, feeding back a control signal to the drilling system 4 in real time, and intelligently regulating and controlling the drilling state of the drilling system 4.
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (10)
1. The utility model provides a coal mine tunnel country rock is along with boring lithology intelligent recognition system which characterized in that: the device comprises a test piece table, a data acquisition system, a data processing system, a power control system and a drilling system;
the test piece table is used for clamping and fixing a rock test piece, the test piece table and the drilling system are arranged on the same horizontal plane, and the central axis is kept horizontal;
the data acquisition system is used for acquiring rotation pressure and propulsion signals of the drilling system in the drilling process of the rock test piece; the data processing system is electrically connected with the data acquisition system and is used for receiving and processing sensor signals of the data acquisition system;
the power control system provides working power for the whole test system.
2. The intelligent coal mine roadway surrounding rock lithology while drilling identification system according to claim 1, characterized in that: the test piece platform comprises a rock test piece, a confining pressure loading device, a support, a rear support rod and a first base, the support is arranged at the top of the first base, the rock test piece is arranged in the support, the confining pressure loading device is fixed around the rock test piece through the support, and the rear support rod penetrates through the tail end of the support and is supported at the tail end of the rock test piece to provide a stable supporting effect.
3. The intelligent coal mine roadway surrounding rock lithology while drilling system according to claim 2, wherein: the confining pressure loading device comprises three pressing plates which are respectively positioned at the top and two sides of the rock test piece, the three pressing plates are in threaded connection with the corresponding supports through screws, and handles are arranged at the tail ends of the screws; the head end of back bracing piece is provided with the support the backup pad of rock test piece, back bracing piece with support threaded connection, the tail end of back bracing piece also is provided with the handle.
4. The intelligent identification system for lithology while drilling of coal mine roadway surrounding rock as claimed in claim 1, wherein: the data acquisition system comprises a torque-rotating speed sensor, a pull rope displacement sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor;
the torque-rotating speed sensor is used for collecting a torque signal and a rotating speed signal in the drilling process;
the pull rope displacement sensor is arranged behind a slide rail of the drilling system and is connected with a hydraulic motor of the drilling system through a pull rope, and the pull rope moves forwards and backwards along with the hydraulic motor in the drilling process to monitor the movement displacement in real time;
the first pressure sensor is connected between an oil inlet of the hydraulic motor and a rotation control port A of a multi-way control valve of the power control system through a second hydraulic oil inlet pipe, and the rotation oil inlet pressure of the hydraulic motor is monitored; the second pressure sensor is connected between an oil return port of the hydraulic motor and a rotation control port B of the multi-way control valve through a second hydraulic oil return pipe, and rotation oil return pressure of the hydraulic motor is monitored; the third pressure sensor is connected to an oil inlet of a propulsion oil cylinder of a drilling system through a first hydraulic oil inlet pipe and is connected to a propulsion control port A of the multi-way control valve, the propulsion oil pressure of the propulsion oil cylinder is monitored, and the fourth pressure sensor is connected to an oil return port of the propulsion oil cylinder and a propulsion control port B of the multi-way control valve through a first hydraulic oil return pipe and is used for monitoring the backward oil pressure of the propulsion oil cylinder.
5. The intelligent coal mine roadway surrounding rock lithology while drilling identification system according to claim 1, characterized in that: the data processing system comprises a display instrument, a data processing center, a data acquisition card, a signal converter and a power transformer which are connected with each other through signal lines, and the data processing system is connected with each sensor in the data acquisition system through the signal lines and used for receiving and processing sensor signals;
the power transformer is used for converting the working voltage of the data processing system, so that the system has adaptability under different working voltage environments, and the signal converter is used for converting analog quantity signals acquired by the data acquisition system into digital quantity signals and visualizing the signals; the data processing center also comprises a data acquisition module, a data processing module and a feedback control module, and is used for recording and processing data transmitted back by the data acquisition system in real time and feeding back and regulating the working state of the whole machine body in real time through an intelligent algorithm in the feedback control module.
6. The intelligent coal mine roadway surrounding rock lithology while drilling identification system according to claim 1, characterized in that: the power control system comprises a motor, a water pump, an oil tank, an electromagnetic valve, a control starter, a propulsion control handle, a rotary control handle, a multi-way control valve, a hydraulic display meter and a main power pump, wherein the motor is rigidly connected with the main power pump, the main power pump is circularly connected with the electromagnetic valve, the oil tank and the multi-way control valve through a hydraulic oil pipe to provide power for the whole system, the control starter is connected with the motor through a power line and used for controlling the working state of the motor, and the hydraulic display meter is connected with the multi-way control valve through a signal line and used for monitoring the oil pressure state of the power control system and providing an alarm function;
the propulsion control handle and the rotation control handle are connected with the multi-path control valve, and different hydraulic oil flows are given to a hydraulic motor of the drilling system by controlling the opening and closing degree of the rotation control handle, so that different initial rotation speeds are controlled; by controlling the opening and closing degree of the propulsion control handle, different hydraulic oil flows are given to a propulsion oil cylinder of the drilling system, so that different initial propulsion forces are controlled;
the water pump is connected with a power head of the drilling system through a water pipe, provides flushing liquid for the drill bit in the drilling process, and provides different flushing liquid pressures through different rotating speeds.
7. The intelligent coal mine roadway surrounding rock lithology while drilling identification system according to claim 1, characterized in that: the drilling system comprises a drill bit, a drill rod, a slide rail, a propulsion oil cylinder, a power head, a hydraulic motor, a limiting plate, a second base and a hinged shaft, wherein the drill bit is connected with the drill rod through threads, a torque-speed sensor is connected with the drill rod in a rigid mode through a first coupler and is connected with the power head in a rigid mode through a second coupler, the hydraulic motor, the power head and the torque-speed sensor are connected above the slide rail in a sliding mode, the hydraulic motor is connected with the power head through a pin bolt, the rotary force provided by the hydraulic motor drives the power head and the drill bit to rotate integrally, the propulsion oil cylinder is arranged on the inner side of the slide rail, the hydraulic motor, the power head and the torque-speed sensor are controlled to advance or retreat along the slide rail through the extension and retraction of the propulsion oil cylinder, the limiting plate is arranged at the head end of the slide rail, and the sliding rail is connected with the second base through the articulated shaft.
8. The intelligent coal mine roadway surrounding rock lithology while drilling system according to claim 7, wherein: the hydraulic oil cylinder capable of controlling the slide rail to ascend and descend is arranged in the articulated shaft, the transverse rotation and the longitudinal deviation of the slide rail are controlled through the articulated shaft, and different drilling directions of a drilling system are controlled through controlling different angles of the articulated shaft so as to meet the requirements of actual engineering.
9. The intelligent coal mine roadway surrounding rock lithology while drilling system according to claim 7, wherein: the middle of the drill rod is provided with a threaded connection port which can be connected with a plurality of drill rods with different lengths so as to meet the requirements of different drilling depths.
10. The intelligent identification method for the lithology while drilling of the coal mine roadway surrounding rock, which is applied to the intelligent identification system for the lithology while drilling of the coal mine roadway surrounding rock as claimed in any one of claims 1 to 9, is characterized by comprising the following steps of:
1) firstly, placing a rock test piece on a test piece table, applying confining pressure to the rock test piece by screwing a confining pressure loading device in the X direction and the Z direction, and fixing a rear supporting rod behind the rock for providing supporting force in the drilling process;
2) starting a control starter, adjusting a motor to drive a main power pump to start working, and ensuring the stability of the whole oil pressure running state of a power control system;
3) adjusting a drill bit to a position close to the contact position of the rock test piece, giving the initial rotation amount of a hydraulic motor of a drilling system and the initial propelling oil pressure of a propelling oil cylinder by controlling a multi-path control valve, a rotary control handle and a propelling control handle to obtain constant propelling force, and starting drilling;
4) in the drilling process, in the data acquisition system, a torque-rotating speed sensor, a pull rope displacement sensor, a first pressure sensor, a second pressure sensor, a third pressure sensor and a fourth pressure sensor synchronously acquire drilling parameters in real time, record data through a data processing system and obtain while-drilling parameters through a data processing module of a data processing center;
5) and simulating and inverting rock mechanical parameters according to the while-drilling parameters to obtain different rock stratum information so as to obtain lithology of the drilling process in different rocks, adopting different drilling parameters by calculating lithology of different rocks, feeding back control signals to the drilling system in real time, and intelligently regulating and controlling the drilling state of the drilling system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116893258A (en) * | 2023-07-12 | 2023-10-17 | 中国矿业大学 | Device for measuring while drilling of composite rock stratum structure and intelligent identification method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116893258A (en) * | 2023-07-12 | 2023-10-17 | 中国矿业大学 | Device for measuring while drilling of composite rock stratum structure and intelligent identification method |
| CN116893258B (en) * | 2023-07-12 | 2024-03-19 | 中国矿业大学 | Device for measuring while drilling of composite rock stratum structure and intelligent identification method |
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