CN110987161A - Mining energy-absorbing scour protection tunnel support frequency detection device - Google Patents
Mining energy-absorbing scour protection tunnel support frequency detection device Download PDFInfo
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- CN110987161A CN110987161A CN201911291467.5A CN201911291467A CN110987161A CN 110987161 A CN110987161 A CN 110987161A CN 201911291467 A CN201911291467 A CN 201911291467A CN 110987161 A CN110987161 A CN 110987161A
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- 238000005065 mining Methods 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 description 22
- 238000013461 design Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H13/00—Measuring resonant frequency
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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
- G01V1/143—Generating seismic energy using mechanical driving means, e.g. motor driven shaft
- G01V1/147—Generating seismic energy using mechanical driving means, e.g. motor driven shaft using impact of dropping masses
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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
- G01V1/28—Processing seismic data, e.g. for interpretation or for event detection
- G01V1/30—Analysis
- G01V1/307—Analysis for determining seismic attributes, e.g. amplitude, instantaneous phase or frequency, reflection strength or polarity
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- Life Sciences & Earth Sciences (AREA)
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- Acoustics & Sound (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A mining energy-absorbing impact-preventing roadway support frequency detection device is characterized in that a mining energy-absorbing impact-preventing roadway support is located between a lower pressure plate and a supporting base, and a jack is used for providing downward pressure for the lower pressure plate; the displacement sensor is positioned between the lower ejector plate and the mining energy-absorbing and impact-preventing roadway support top beam, the mining energy-absorbing and impact-preventing roadway support top beam abuts against the lower surface of the lower ejector plate through the displacement sensor, the signal output end of the displacement sensor is connected with the signal input end of the multifunctional anti-mixing filter amplifier, and the signal output end of the multifunctional anti-mixing filter amplifier is connected with the signal input end of the intelligent signal acquisition processing analyzer; the high-elasticity energy-gathering hammer is positioned below a top beam of a mining energy-absorbing impact-proof roadway support, the force sensor is fixedly arranged on a hammer head of the high-elasticity energy-gathering hammer, and a signal output end of the force sensor is connected with a signal input end of the multifunctional anti-mixing filter amplifier; the jack is connected with a hydraulic system, the hydraulic system is connected with a control system, and the control system is connected with a data acquisition and processing system.
Description
Technical Field
The invention belongs to the technical field of detection of coal mine support equipment, and particularly relates to a frequency detection device for a mining energy-absorbing impact-resistant roadway support.
Background
The deep roadway surrounding rock control is one of theoretical bottlenecks and key problems of deep mining, and the coordination effect of the support and the roadway surrounding rock is the core problem of deformation control of the roadway surrounding rock in the coal mining process. The practice in recent years proves that the roadway adopts the energy-absorbing impact-proof support to strengthen the support, so that the deformation of the surrounding rock of the roadway can be effectively controlled, and the rock burst of the roadway can be effectively prevented and controlled.
When the impact earth pressure occurs, the dynamic load acting on the support is transmitted from the seismic source in the form of wave vibration, and the vibration frequency of the impact earth pressure is different in different seismic levels. Through a large amount of field observation, the same tunnel of the same coal mine not only has a case of large and small seismic level damage, but also has a case of small and large seismic level damage, namely, the damage degree of the support is not aggravated along with the increase of the seismic level of the rock burst. After research, the above conditions are related to the support frequency, and when the rock burst vibration frequency is close to the support frequency, the rock burst with small magnitude can cause large impact damage to the roadway.
In order to avoid resonance damage caused by the fact that the frequency of the support is close to the vibration frequency of surrounding rocks, the support frequency is required to be kept away from the vibration frequency of rock burst in a roadway support design, the vibration frequency range of the rock burst is known, wherein the fault dislocation type rock burst frequency is 1-10 Hz, the top/bottom plate fracture type rock burst frequency is 3-16 Hz, and the coal body compression type rock burst frequency is 10-25 Hz.
However, there is no dedicated device for detecting the frequency of the stent, and therefore, there is a need to develop a dedicated device capable of detecting the frequency of the stent.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a mining energy-absorbing impact-preventing roadway support frequency detection device, which can accurately detect the frequency of a support, and can adjust the design of a roadway support in time when the frequency of the support is close to the vibration frequency of surrounding rocks, so that the problem of resonance damage caused by the fact that the frequency of the support is close to the vibration frequency of the surrounding rocks is solved, after the support after the design is adjusted is adopted in a roadway, the damage of rock burst disasters to mine production and supporting equipment can be effectively reduced, the mine safety production risk is effectively reduced, and the production efficiency of a mine is effectively improved.
In order to achieve the purpose, the invention adopts the following technical scheme: a frequency detection device for a mining energy-absorbing impact-resistant roadway support comprises a supporting base, a pressing top plate, a jack, a high-elasticity energy-gathering hammer, a multifunctional anti-mixing filter amplifier, an intelligent signal acquisition processing analyzer, a displacement sensor, a force sensor, a hydraulic system, a control system and a data acquisition processing system; the mining energy-absorbing impact-preventing roadway support is positioned between the lower pressure plate and the supporting base, and the jack is positioned above the lower pressure plate and provides a downward force for the lower pressure plate through the jack; the displacement sensor is positioned between the lower ejector plate and the mining energy-absorbing and impact-preventing roadway support top beam, the mining energy-absorbing and impact-preventing roadway support top beam abuts against the lower surface of the lower ejector plate through the displacement sensor, the signal output end of the displacement sensor is connected with the signal input end of the multifunctional anti-mixing filter amplifier, and the signal output end of the multifunctional anti-mixing filter amplifier is connected with the signal input end of the intelligent signal acquisition processing analyzer; the high-elasticity energy-gathering hammer is positioned below a top beam of a mining energy-absorbing impact-preventing roadway support, the force sensor is fixedly arranged on a hammer head of the high-elasticity energy-gathering hammer, and a signal output end of the force sensor is connected with a signal input end of the multifunctional anti-mixing filter amplifier; the jack is connected with a hydraulic system, the hydraulic system is connected with a control system, and the control system is connected with a data acquisition and processing system.
The invention has the beneficial effects that:
the mining energy-absorbing impact-preventing roadway support frequency detection device can accurately detect the frequency of a support, and can adjust the design of a roadway support in time when the frequency of the support is close to the vibration frequency of surrounding rocks, so that the problem of resonance damage caused by the fact that the frequency of the support is close to the vibration frequency of the surrounding rocks is solved, when the support after adjustment design is adopted in a roadway, the damage of rock burst disasters to mine production and supporting equipment can be effectively reduced, the mine safety production risk is effectively reduced, and the production efficiency of a mine is effectively improved.
Drawings
FIG. 1 is a schematic structural diagram of a mining energy-absorbing impact-preventing roadway support frequency detection device of the invention;
in the figure, the device comprises a supporting base 1, a pressing top plate 2, a jack 3, a high-elasticity energy-gathering hammer 4, a multifunctional anti-mixing filter amplifier 5, an intelligent signal acquisition processing analyzer 6, a displacement sensor 7, a force sensor 8, a hydraulic system 9, a control system 10, a data acquisition processing system 11 and a mining energy-absorbing impact-proof roadway support 12.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, a mining energy-absorbing impact-preventing roadway support frequency detection device comprises a supporting base 1, a pressing top plate 2, a jack 3, a high-elasticity energy-gathering hammer 4, a multifunctional anti-mixing filter amplifier 5, an intelligent signal acquisition processing analyzer 6, a displacement sensor 7, a force sensor 8, a hydraulic system 9, a control system 10 and a data acquisition processing system 11; the mining energy-absorbing impact-preventing roadway support is characterized in that the lower pressing top plate 2 is located right above the supporting base 1, the mining energy-absorbing impact-preventing roadway support 12 is located between the lower pressing top plate 2 and the supporting base 1, the jack 3 is located above the lower pressing top plate 2, and downward pressure is provided for the lower pressing top plate 2 through the jack 3; the displacement sensor 7 is positioned between the lower ejector plate 2 and the top beam of the mining energy-absorbing and impact-preventing roadway support 12, the top beam of the mining energy-absorbing and impact-preventing roadway support 12 abuts against the lower surface of the lower ejector plate 2 through the displacement sensor 7, the signal output end of the displacement sensor 7 is connected with the signal input end of the multifunctional anti-mixing filter amplifier 5, and the signal output end of the multifunctional anti-mixing filter amplifier 5 is connected with the signal input end of the intelligent signal acquisition processing analyzer 6; the high-elasticity energy-collecting hammer 4 is positioned below a top beam of a mining energy-absorbing impact-preventing roadway support 12, the force sensor 8 is fixedly arranged on a hammer head of the high-elasticity energy-collecting hammer 4, and a signal output end of the force sensor 8 is connected with a signal input end of the multifunctional anti-mixing filter amplifier 5; the jack 3 is connected with a hydraulic system 9, the hydraulic system 9 is connected with a control system 10, and the control system 10 is connected with a data acquisition and processing system 11.
The one-time use process of the present invention is described below with reference to the accompanying drawings:
when the mining energy-absorbing impact-proof roadway support 12 is arranged between the supporting base 1 and the pressing top plate 2, the jack 3 is started, applying downward pressure to the mining energy-absorbing impact-resistant roadway support 12, after the downward pressure reaches a first-stage set value, at the moment, the multifunctional scour prevention device on the mining energy-absorbing scour prevention roadway support 12 does not deform, the high-elasticity energy-gathering hammer 4 is started, the mining energy-absorbing impact-proof roadway support 12 is knocked by the high-elasticity energy-gathering hammer 4, signals collected by the displacement sensor 7 and the force sensor 8 are simultaneously transmitted to the multifunctional anti-mixing filter amplifier 5, the signal processed by the multifunctional anti-mixing filter amplifier 5 is finally transmitted to an intelligent signal acquisition processing analyzer 6, the frequency when arriving 6 intelligent signal acquisition processing analysis appearance and reacing first stage pushing down force after carrying out analysis processes to the signal, frequency before multi-functional scour protection ware warp promptly.
After frequency detection when first stage pushing down force is finished, pushing down force is increased through the jack 3, the multifunctional impact protector on the direct mining energy-absorbing impact-proof roadway support 12 starts to deform, then the mining energy-absorbing impact-proof roadway support 12 is knocked again through the high-elasticity energy-gathering hammer 4, signals collected by the displacement sensor 7 and the force sensor 8 are transmitted to the intelligent signal collecting, processing and analyzing instrument 6 after being processed by the multifunctional anti-mixing filter amplifier 5, frequency when second stage pushing down force is obtained after the signals are analyzed and processed by the intelligent signal collecting, processing and analyzing instrument 6, namely frequency in deformation of the multifunctional impact protector.
After frequency detection when second stage pushing down force is completed, pushing down force continues to be increased through the jack 3, deformation of the multifunctional anti-impact device on the direct mining energy-absorbing anti-impact roadway support 12 is finished, then the mining energy-absorbing anti-impact roadway support 12 is knocked again through the high-elasticity energy-gathering hammer 4, signals collected by the displacement sensor 7 and the force sensor 8 are processed by the multifunctional anti-mixing filter amplifier 5 and then transmitted to the intelligent signal collecting, processing and analyzing instrument 6, and the frequency when third stage pushing down force is obtained after the signals are analyzed and processed by the intelligent signal collecting, processing and analyzing instrument 6, namely the frequency after deformation of the multifunctional anti-impact device.
The frequency detection results obtained during the pressure at the three stages are collected, and only if the detection frequencies at the three stages do not fall within the rock burst vibration frequency range, it is indicated that the mining energy-absorbing impact-preventing roadway support 12 meets the design requirements, otherwise, the design of the mining energy-absorbing impact-preventing roadway support 12 needs to be readjusted, and the mining energy-absorbing impact-preventing roadway support 12 after being adjusted and designed needs to be subjected to frequency detection again until the detection frequencies at the three stages of the mining energy-absorbing impact-preventing roadway support 12 do not fall within the rock burst vibration frequency range.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (1)
1. The utility model provides a mining energy-absorbing scour protection tunnel support frequency detection device which characterized in that: the device comprises a supporting base, a lower pressing top plate, a jack, a high-elasticity energy-gathering hammer, a multifunctional anti-mixing filter amplifier, an intelligent signal acquisition processing analyzer, a displacement sensor, a force sensor, a hydraulic system, a control system and a data acquisition processing system; the mining energy-absorbing impact-preventing roadway support is positioned between the lower pressure plate and the supporting base, and the jack is positioned above the lower pressure plate and provides a downward force for the lower pressure plate through the jack; the displacement sensor is positioned between the lower ejector plate and the mining energy-absorbing and impact-preventing roadway support top beam, the mining energy-absorbing and impact-preventing roadway support top beam abuts against the lower surface of the lower ejector plate through the displacement sensor, the signal output end of the displacement sensor is connected with the signal input end of the multifunctional anti-mixing filter amplifier, and the signal output end of the multifunctional anti-mixing filter amplifier is connected with the signal input end of the intelligent signal acquisition processing analyzer; the high-elasticity energy-gathering hammer is positioned below a top beam of a mining energy-absorbing impact-preventing roadway support, the force sensor is fixedly arranged on a hammer head of the high-elasticity energy-gathering hammer, and a signal output end of the force sensor is connected with a signal input end of the multifunctional anti-mixing filter amplifier; the jack is connected with a hydraulic system, the hydraulic system is connected with a control system, and the control system is connected with a data acquisition and processing system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291467.5A CN110987161A (en) | 2019-12-16 | 2019-12-16 | Mining energy-absorbing scour protection tunnel support frequency detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911291467.5A CN110987161A (en) | 2019-12-16 | 2019-12-16 | Mining energy-absorbing scour protection tunnel support frequency detection device |
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| CN110987161A true CN110987161A (en) | 2020-04-10 |
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| CN201911291467.5A Pending CN110987161A (en) | 2019-12-16 | 2019-12-16 | Mining energy-absorbing scour protection tunnel support frequency detection device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2021520C1 (en) * | 1991-07-08 | 1994-10-15 | Тульский государственный технический университет | Aggregate roadway support |
| CN103364160A (en) * | 2013-08-06 | 2013-10-23 | 江苏万工科技集团有限公司 | Device and method for measuring mechanical impedance of harness frame |
| US20170254202A1 (en) * | 2016-03-07 | 2017-09-07 | Kern Tunneltechnik Sa | Formwork System |
| CN110159331A (en) * | 2018-02-12 | 2019-08-23 | 辽宁工程技术大学 | A kind of automatic moving type erosion control alley hydraulic support |
-
2019
- 2019-12-16 CN CN201911291467.5A patent/CN110987161A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2021520C1 (en) * | 1991-07-08 | 1994-10-15 | Тульский государственный технический университет | Aggregate roadway support |
| CN103364160A (en) * | 2013-08-06 | 2013-10-23 | 江苏万工科技集团有限公司 | Device and method for measuring mechanical impedance of harness frame |
| US20170254202A1 (en) * | 2016-03-07 | 2017-09-07 | Kern Tunneltechnik Sa | Formwork System |
| CN110159331A (en) * | 2018-02-12 | 2019-08-23 | 辽宁工程技术大学 | A kind of automatic moving type erosion control alley hydraulic support |
Non-Patent Citations (1)
| Title |
|---|
| 卢进南 等: "巷道超前支架全支撑态动力学模型", 《煤炭学报》 * |
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Application publication date: 20200410 |
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