CN113820738B - A focus equipment for coal rock mass stress measurement - Google Patents
A focus equipment for coal rock mass stress measurement Download PDFInfo
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- CN113820738B CN113820738B CN202111082795.1A CN202111082795A CN113820738B CN 113820738 B CN113820738 B CN 113820738B CN 202111082795 A CN202111082795 A CN 202111082795A CN 113820738 B CN113820738 B CN 113820738B
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- 239000011435 rock Substances 0.000 title claims abstract description 113
- 239000003245 coal Substances 0.000 title claims abstract description 108
- 238000005259 measurement Methods 0.000 title claims description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 238000003825 pressing Methods 0.000 claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000002360 explosive Substances 0.000 abstract description 11
- 230000005284 excitation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/02—Generating seismic energy
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a seismic source device for measuring the stress of coal and rock mass, which comprises a track, a moving device and a manual seismic source; the track is arranged at the first coal rock mass side, and the moving device is movably connected to the track; the artificial seismic source is connected below the mobile device; the artificial seismic source comprises a shell, an electromagnetic seismic source and a pressing mechanism; the electromagnetic vibration source and the pressing mechanism are movably connected in the shell; the artificial seismic source also comprises a control mechanism which is respectively connected with the electromagnetic seismic source, the pressing mechanism and the moving device; the control mechanism is used for controlling the moving device to move to a position to be detected and starting the electromagnetic vibration source to move to and prop against the first coal rock body side, and controlling the pressing mechanism to move to and prop against the second coal rock body side opposite to the first coal rock body, so that the electromagnetic vibration source presses the first coal rock body. According to the invention, the rail and the moving device are arranged, so that the artificial seismic source is used for replacing explosive to emit vibration waves to pass through the coal rock mass to be measured, a new means is provided for measuring the stress of the coal rock, and the device is efficient, convenient and high in safety in use.
Description
Technical Field
The invention relates to the technical field of coal mine stress, in particular to a seismic source device for measuring the stress of coal and rock mass.
Background
Rock burst is a phenomenon that the accumulated elastic deformation potential energy in a rock body is suddenly and violently released under a certain condition, so that coal and rock burst and are ejected. The rock burst can cause roof accidents, damage to a roadway, casualties, equipment damage and pollution to the working environment. Especially, along with the continuous increase of the mining depth of coal mines in China, rock burst disasters represent more and more serious development situations, and the safety production of the coal mines and the life safety of wide coal mine workers are greatly threatened.
At present, the coal mine stress measurement on mines with protruding rock burst is an important technical means for monitoring the occurrence of microseisms, namely, the distribution conditions of typical geological abnormal areas such as stress abnormal areas, coal and rock crushing areas, geological structures and the like in the coal and rock are deduced by obtaining the distribution images of the seismic wave velocity and the seismic wave attenuation coefficient in the coal and rock through the energy change when seismic waves pass through the coal and rock.
The vibration source is needed for generating the earthquake wave, and at present, the vibration source at home and abroad mainly uses explosive, and because of factors such as the quantity of explosive, lithology of explosive medium, shape of explosive bag, coupling of the explosive bag and the explosive medium, and the like, the vibration source has important influence on the characteristics of the shape of the earthquake wave, amplitude, frequency and the like, so that the explosive is high in cost and complex in operation process as the vibration source.
Disclosure of Invention
In view of the above, the invention provides a seismic source device for measuring the stress of coal and rock mass, which uses an artificial seismic source as a vibration source to replace explosive to emit vibration waves to penetrate through the coal and rock mass to be measured, provides a new means for measuring the stress of the coal and rock mass and analyzing the structure, and is efficient, convenient and safe in use.
Specifically, the method comprises the following technical scheme:
The embodiment of the invention provides a seismic source device for measuring the stress of a coal rock mass, which comprises a track, a moving device and a manual seismic source; the track is arranged on the first coal rock mass side, and the moving device is movably connected to the track; the artificial seismic source is connected below the mobile device;
The artificial seismic source comprises a shell, an electromagnetic seismic source and a pressing mechanism; the electromagnetic vibration source and the pressing mechanism are movably connected in the shell;
the artificial seismic source further comprises a control mechanism which is respectively connected with the electromagnetic seismic source, the pressing mechanism and the moving device;
The control mechanism is used for controlling the moving device to move to a position to be detected and starting the electromagnetic vibration source to move to the side of the first coal rock body and abut against the first coal rock body, and controlling the pressing mechanism to move to the side of the second coal rock body opposite to the first coal rock body and abut against the second coal rock body, so that the electromagnetic vibration source presses the first coal rock body.
Optionally, the compaction mechanism includes a hydraulic prop and a hydraulic control system for driving the hydraulic prop to move toward the second coal-rock mass side along the axial direction of the housing;
The hydraulic prop is connected with a pressure sensor, and the pressure sensor is used for feeding back the pressure between the hydraulic prop and the second coal rock mass.
Optionally, the compressing mechanism further includes a camera, where the camera is disposed at an end of the housing and is located at a center of the housing.
Optionally, a coupler is connected to an end of the electromagnetic source opposite the first coal rock mass, the coupler being for tightly coupling the electromagnetic source to the first coal rock mass.
Optionally, the moving device comprises a first roller, a second roller, a transmission chain and a motor, wherein the first roller is connected with the second roller through the transmission chain, and the first roller is hung on the track;
the motor is connected to the second roller, and the artificial seismic source is connected to the lower portion of the second roller.
Optionally, the track comprises a first hanging rail, a second hanging rail, a hanging rod and a buckle, wherein the first hanging rail is connected to one end of the first hanging rod through the buckle, the second hanging rail is connected to the other end of the first hanging rod through the buckle, and the first hanging rail and the second hanging rail are oppositely arranged;
The first roller is hung on the first hanger rail and the second hanger rail and can move back and forth on the first hanger rail and the second hanger rail.
Optionally, a displacement measurement device is arranged on the second roller, and the displacement measurement device is used for feeding back the moving distance of the second roller.
Optionally, the hydraulic strut includes a first strut, a second strut, and a third strut;
The first support and the second support are of cylindrical structures, and the second support is connected in the first support in a telescopic manner;
the third strut is telescopically coupled within the second strut;
the hydraulic control system is used for driving the third support column to stretch and retract relative to the second support column and driving the second support column to stretch and retract relative to the first support column.
Optionally, the number of the hydraulic struts is four, and the four hydraulic struts are uniformly distributed along the circumferential direction of the housing.
Optionally, a wiring cavity is arranged in the electromagnetic vibration source, and wiring for connecting the electromagnetic vibration source, the pressing mechanism and the moving device with the control mechanism is arranged in the wiring cavity;
the wiring is connected with an on-mine host, and the on-mine host drives the control mechanism through the wiring cavity so as to control the artificial seismic source and the moving device.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
According to the invention, the track is arranged on the first coal rock mass side, the moving device drives the artificial seismic source to move along the track, the pressing mechanism and the electromagnetic seismic source are movably connected in the shell of the artificial seismic source, and the control mechanism is connected outside the shell of the artificial seismic source. When the control mechanism controls the moving device to move to the position to be measured along the track, the electromagnetic vibration source is started to move to the side of the first coal rock body and offset, and then the compressing mechanism is driven to move to the side of the second coal rock body corresponding to the first coal rock body and offset, so that the electromagnetic vibration source and the first coal rock body are compressed, and then the electromagnetic excitation signal is released. The artificial seismic source is used for replacing explosive to emit vibration waves to penetrate through the coal rock mass to be measured, a new means is provided for measuring the stress of the coal rock, the artificial seismic source is conveniently controlled to move to a position to be measured to release electromagnetic excitation by arranging the moving device and a moving track corresponding to the moving device, and the device is convenient and quick to use and high in safety.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a seismic source apparatus for coal-rock mass stress measurement according to an embodiment of the invention.
Fig. 2 is a side view of fig. 1.
Fig. 3 is a schematic structural diagram of the artificial seismic source in fig. 1 in an operating state.
Reference numerals in the drawings are respectively expressed as:
1-track; 11-a first hanger rail; 12-a second hanger rail; 13-a first boom; 14-clamping; 2-a mobile device; 21-a first roller; 22-a second roller; 23-a drive chain; 24-motor; 25-a second boom; 3-artificial seismic source; 31-a housing; 32-electromagnetic seismic sources; 321-wiring cavities; 33-a hold-down mechanism; 331-hydraulic prop; 3311—a first pillar; 3312-a second leg; 3313—a third leg; 332-a camera; 34-a control mechanism; 4-a first coal rock mass; 5-a second coal rock mass; 6-coupler.
Specific embodiments of the present invention have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to make the technical scheme and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Unless defined otherwise, technical or scientific terms used herein should be understood to have the meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate a relative positional relationship, which changes accordingly when the absolute position of the object to be described changes.
For ease of understanding the invention, the general structure of a source apparatus for coal rock mass stress measurement and its application are described herein exemplarily.
Fig. 1 is a schematic structural view of a seismic source apparatus for measuring stress of a coal rock mass according to an embodiment of the present invention, fig. 2 is a side view of fig. 1, and fig. 3 is an enlarged view of an artificial seismic source operating state of fig. 1.
As shown in fig. 1, a seismic source device for measuring the stress of a coal rock mass according to an embodiment of the invention comprises a track 1, a moving device 2 and a manual seismic source 3; the track 1 is arranged on the side of the first coal rock mass 4, and the moving device 2 is movably connected to the track 1; the artificial seismic source 3 is connected below the mobile device 2;
The artificial seismic source 3 comprises a shell 31, an electromagnetic seismic source 32 and a pressing mechanism 33; the electromagnetic vibration source 32 and the pressing mechanism 33 are movably connected in the shell 31; the artificial seismic source 3 further comprises a control mechanism 34, and the control mechanism 34 is respectively connected with the electromagnetic seismic source 32, the pressing mechanism 33 and the moving device 2;
The control mechanism 34 is used for controlling the moving device 2 to move to a position to be tested and starting the electromagnetic vibration source 32 to move to the side of the first coal rock body 4 and abut against the first coal rock body 4, and controlling the pressing mechanism 33 to move to the side of the second coal rock body 5 opposite to the first coal rock body 4 and abut against the second coal rock body 5, so that the electromagnetic vibration source 32 presses the first coal rock body 4.
According to the invention, the track is arranged on the first coal rock mass side, the moving device drives the artificial seismic source to move along the track, the pressing mechanism and the electromagnetic seismic source are movably connected in the shell of the artificial seismic source, and the control mechanism is connected outside the shell of the artificial seismic source. When the control mechanism controls the moving device to move to the position to be measured along the track, the electromagnetic vibration source is started to move to the side of the first coal rock body and offset, and then the compressing mechanism is driven to move to the side of the second coal rock body corresponding to the first coal rock body and offset, so that the electromagnetic vibration source and the first coal rock body are compressed, and then the electromagnetic excitation signal is released. The artificial seismic source is used for replacing explosive to emit vibration waves to penetrate through the coal rock mass to be measured, a new means is provided for measuring the stress of the coal rock, the artificial seismic source is conveniently controlled to move to a position to be measured to release electromagnetic excitation by arranging the moving device and a moving track corresponding to the moving device, and the device is convenient and quick to use and high in safety.
As shown in fig. 1 and 3, the hold-down mechanism 33 includes a hydraulic prop 331 and a hydraulic control system for driving the hydraulic prop 331 to move toward the second coal rock mass 5 side in the axial direction of the housing 31; the hydraulic prop 331 is connected with a pressure sensor for feeding back the pressure between the hydraulic prop 331 and the second coal rock mass 5.
As shown in fig. 2, the pressing mechanism 33 further includes a camera 332, where the camera 332 is disposed at an end of the housing 31 and is located at a center of the housing 31.
As shown in fig. 1 and 3, a coupler 6 is connected to the end of the electromagnetic source 32 opposite the first coal rock mass 4, the coupler 6 being used to tightly couple the electromagnetic source 32 to the first coal rock mass 4.
As shown in fig. 1 and 2, the moving device 2 comprises a first roller 21, a second roller 22, a transmission chain 23 and a motor 24, wherein the first roller 21 is connected with the second roller 22 through the transmission chain 23, and the first roller 21 is hung on the track 1; the motor 24 is connected to the second roller 22, and an artificial seismic source 3 is connected to the lower part of the second roller 22.
As shown in fig. 1 and 2, the track 1 includes a first hanger rail 11, a second hanger rail 12, a first hanger rail 13, and a buckle 14, wherein the first hanger rail 11 is connected to one end of the first hanger rail 13 through the buckle 14, the second hanger rail 12 is connected to the other end of the first hanger rail 13 through the buckle 14, and the first hanger rail 11 and the second hanger rail 12 are oppositely arranged; the first roller 21 is hung on the first hanger rail 11 and the second hanger rail 12, and can move back and forth on the first hanger rail 11 and the second hanger rail 12.
The second roller 22 is provided with a displacement measuring device for feeding back the moving distance of the second roller 22.
As shown in fig. 2 and 3, the hydraulic struts 331 include a first strut 3311, a second strut 3312, and a third strut 3313; the first support 3311 and the second support 3312 are both cylindrical in structure, and the second support 3312 is telescopically connected within the first support 3311; the third support 3313 is telescopically connected within the second support 3312; the hydraulic control system is used to drive the third support 3313 to telescope relative to the second support 3312 and to drive the second support 3312 to telescope relative to the first support 3311.
As shown in fig. 2, the number of the hydraulic struts 331 is four, and the four hydraulic struts 331 are uniformly distributed along the circumferential direction of the housing 31.
As shown in fig. 1, a wiring cavity 321 is arranged inside the electromagnetic vibration source 32, and wiring for connecting the electromagnetic vibration source 32, the pressing mechanism 33 and the moving device 2 with the control mechanism 34 is arranged inside the wiring cavity 321; the wiring is connected with an on-mine host computer which drives a control mechanism 34 through a wiring cavity 321 to control the artificial seismic source 3 and the moving device 2.
When the seismic source equipment for measuring the stress of the coal rock mass is used, the track 1 is arranged on the side close to the first coal rock mass 4 and is arranged along the length direction of the first coal rock mass 4, and the first coal rock mass 4 is the coal rock mass with the stress to be measured, so that the artificial seismic source 3 can move along the side close to the first coal rock mass 4 as much as possible, and the released electromagnetic excitation signal can be well absorbed by the first coal rock mass 4.
The first hanger rail 11 and the second hanger rail 12 are oppositely arranged at two ends of the first hanger rod 13, and the first hanger rail 11 and the second hanger rail 12 are fixedly penetrated through two ends of the first hanger rod 13 by the buckles 14 respectively.
A gap through which the transmission chain 23 can pass is reserved between the bottoms of the first hanger rail 11 and the second hanger rail 12.
Due to the limitation of working environment under the mine, the artificial seismic source 3 is convenient to transport to the mine for operation, the moving device 2 is arranged on the artificial seismic source 3, the control mechanism 34 is remotely started through the host on the mine to further control the movement or stop of the moving device 2, the operation is convenient, the working efficiency is high, and the danger and the safety are high when an operator enters the mine for operation are avoided.
The first roller 21 is hung on the first hanger rail 11 and the second hanger rail 12, the transmission chain 23 connects the first roller 21 with the second roller 22, and the second roller 22 is located below the first roller 21. Two ends of the main shaft of the second roller 22 are respectively connected with one end of a second suspender 25, and the other end of the second suspender 25 is connected to the artificial seismic source 3.
The motor 24 is connected to the second roller 22, and when the on-mine host driving control mechanism 34 starts the motor 24, the motor 24 drives the second roller 22 to rotate, and the second roller 22 drives the transmission chain 23 to move, so that the first roller 21 is driven to move back and forth along the length direction of the first coal rock body 4 between the first hanger rail 11 and the second hanger rail 12, and then the artificial seismic source 3 is driven to move back and forth along the length direction of the first coal rock body 4.
In order to accurately control the moving distance of the artificial seismic source 3, a displacement measuring device is arranged on the second roller 22, the displacement measuring device can feed back the moving distance of the second roller 22, the moving distance of each time can be fed back to the control mechanism 34, the moving distance of the second roller 22 is accurately controlled remotely and further accurately to control the artificial seismic source 3 to move to a predicted position for operation through the wiring cavity 321, and the working efficiency is high.
After the control mechanism 34 starts the motor 24 to move to a certain position to be detected, the control mechanism 34 starts the camera 332 to take a picture of the space in front, and the picture is uploaded to the host computer on the mine through the wiring cavity 321 for obstacle recognition. Judging whether an obstacle influencing the compaction device 33 to compact the second coal rock mass 5 exists or not, if not, starting the electromagnetic vibration source 32 to move towards the first coal rock mass 4 and contact the first coal rock mass 4 by the control mechanism 34, and if so, starting the motor 24 again by the on-mine host control mechanism 34 to move the artificial vibration source 3 to a place without the obstacle, stopping, and starting the electromagnetic vibration source 32 to move towards the first coal rock mass 4 and contact the first coal rock mass 4.
The hold-down mechanism 33 and the electromagnetic vibration source 32 are disposed inside the housing 31 along the axial direction of the artificial vibration source 3, and when the artificial vibration source 3 starts to operate, the hold-down mechanism 33 and the electromagnetic vibration source 32 move to the outside of the housing 31 to be exposed to the outside space. The housing 31 can protect the pressing mechanism 33 and the electromagnetic vibration source 32 from damaging the working performance of the electromagnetic vibration source 32 due to the foreign matters knocked or dropped by the severe working environment under the mine.
In order to ensure good coupling between the electromagnetic source 32 and the first coal-rock mass 4, a coupler 6 is arranged at the end of the electromagnetic source 32 close to the first coal-rock mass 4, and the principle of the coupler 6 is to convert the electric energy of the capacitor and the inductor on the circuit board into an electromagnetic field and transmit the electromagnetic field in a fixed direction so as to ensure that the electromagnetic excitation released by the electromagnetic source 32 is transmitted to the first coal-rock mass 4.
When the electromagnetic source 32 is in contact with the first coal rock mass 4 through the coupler 6, the control mechanism 34 activates the hydraulic control system to drive the second support 3312 out of the cylindrical structure of the first support 3311 to the side of the second coal rock mass 5 and to drive the third support 3313 out of the cylindrical structure of the second support 3312 and into contact with the second coal rock mass 5.
The hydraulic prop 331 is connected with a pressure sensor, when the pressure between the hydraulic prop 331 and the second coal rock body 5 reaches a certain pressure value, the coupling between the coupler 6 and the first coal rock body 4 is good, at this time, the control mechanism 34 stops driving the compressing mechanism 33 to move, and the electromagnetic seismic source 32 is started. The electromagnetic source 32 belongs to a controlled source, and the signal is emitted in a horizontal direction, and electromagnetic excitation is released to the first coal rock mass 4 through the coupler 6.
A vibration pickup sensor is installed at the side of the second coal rock mass 5 every 60 meters to pick up electromagnetic excitation signals released by the electromagnetic vibration source 32. The signal output line of the seismic source equipment for measuring the stress of the coal and rock mass and each vibration pickup sensor are connected to the acquisition equipment, and further wave velocity inversion is realized through data operation to obtain the structural characteristics of the coal and rock mass.
After the experiment is completed, the control mechanism 34 moves the artificial seismic source 3 forward by 100 meters through the on-mine host starting motor 24, and performs the measurement of the excitation signal sent out for the second time, and sequentially performs the measurement process, wherein the principle of the test process is the same as that described above, and the test is not repeated until the experiment of measuring the stress of the coal rock mass of the present round is completed completely.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. The specification and examples are to be regarded in an illustrative manner only.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. A seismic source device for measuring the stress of a coal rock mass, which is characterized by comprising a track (1), a moving device (2) and an artificial seismic source (3); the track (1) is arranged on the side of the first coal rock mass (4), and the moving device (2) is movably connected to the track (1); the artificial seismic source (3) is connected below the mobile device (2);
the artificial seismic source (3) comprises a shell (31), an electromagnetic seismic source (32) and a pressing mechanism (33); the electromagnetic vibration source (32) and the pressing mechanism (33) are movably connected in the shell (31);
The artificial seismic source (3) further comprises a control mechanism (34), and the control mechanism (34) is respectively connected with the electromagnetic seismic source (32), the pressing mechanism (33) and the moving device (2);
The control mechanism (34) is used for controlling the moving device (2) to move to a position to be detected and starting the electromagnetic vibration source (32) to move towards the first coal rock body (4) and prop against the first coal rock body (4), and controlling the pressing mechanism (33) to move towards a second coal rock body (5) opposite to the first coal rock body (4) and prop against the second coal rock body (5), so that the electromagnetic vibration source (32) presses the first coal rock body (4);
the moving device (2) comprises a first roller (21), a second roller (22), a transmission chain (23) and a motor (24), wherein the first roller (21) is connected with the second roller (22) through the transmission chain (23), and the first roller (21) is hung on the track (1);
the motor (24) is connected to the second roller (22), and the artificial seismic source (3) is connected below the second roller (22);
The track (1) comprises a first hanging rail (11), a second hanging rail (12), a first hanging rod (13) and a buckle (14), wherein the first hanging rail (11) is connected to one end of the first hanging rod (13) through the buckle (14), the second hanging rail (12) is connected to the other end of the first hanging rod (13) through the buckle (14), and the first hanging rail (11) and the second hanging rail (12) are oppositely arranged;
The first roller (21) is hung on the first hanger rail (11) and the second hanger rail (12) and can move back and forth on the first hanger rail (11) and the second hanger rail (12).
2. The seismic source device for coal and rock mass stress measurement according to claim 1, characterized in that the hold-down mechanism (33) comprises a hydraulic prop (331) and a hydraulic control system for driving the hydraulic prop (331) to move along the axial direction of the housing (31) towards the second coal and rock mass (5) side;
The hydraulic prop (331) is connected with a pressure sensor, and the pressure sensor is used for feeding back the pressure between the hydraulic prop (331) and the second coal rock mass (5).
3. The seismic source device for coal and rock mass stress measurement according to claim 2, characterized in that the hold-down mechanism (33) further comprises a camera (332), the camera (332) being arranged at an end of the housing (31) and being located in the center of the housing (31).
4. The source apparatus for coal and rock mass stress measurement according to claim 1, characterized in that a coupler (6) is connected to the end of the electromagnetic source (32) opposite the first coal and rock mass (4), the coupler (6) being used for tightly coupling the electromagnetic source (32) with the first coal and rock mass (4).
5. A source apparatus for coal and rock mass stress measurement according to claim 1, characterized in that the second roller (22) is provided with displacement measuring means for feeding back the distance of movement of the second roller (22).
6. The source apparatus for coal rock mass stress measurement according to claim 2,
The hydraulic strut (331) includes a first strut (3311), a second strut (3312), and a third strut (3313);
the first support post (3311) and the second support post (3312) are both cylindrical structures, and the second support post (3312) is telescopically connected inside the first support post (3311);
The third support post (3313) is telescopically connected within the second support post (3312);
The hydraulic control system is configured to drive the third support (3313) to telescope relative to the second support (3312) and to drive the second support (3312) to telescope relative to the first support (3311).
7. The source apparatus for coal and rock mass stress measurement according to claim 2, wherein the number of the hydraulic struts (331) is four, and four hydraulic struts (331) are uniformly distributed along the circumference of the housing (31).
8. The source device for coal and rock mass stress measurement according to claim 1, characterized in that a wiring cavity (321) is provided inside the electromagnetic source (32), wiring of the electromagnetic source (32), the pressing mechanism (33) and the moving means (2) connected to the control mechanism (34) is provided inside the wiring cavity (321);
the wiring is connected with an on-mine host, and the on-mine host drives the control mechanism (34) through the wiring cavity (321) so as to control the artificial seismic source (3) and the moving device (2).
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| CN202111082795.1A CN113820738B (en) | 2021-09-15 | 2021-09-15 | A focus equipment for coal rock mass stress measurement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111082795.1A CN113820738B (en) | 2021-09-15 | 2021-09-15 | A focus equipment for coal rock mass stress measurement |
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| CN113820738A CN113820738A (en) | 2021-12-21 |
| CN113820738B true CN113820738B (en) | 2024-05-07 |
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