CN111624326A - Coal petrography body hydrogen bond induction apparatus that breaks - Google Patents
Coal petrography body hydrogen bond induction apparatus that breaks Download PDFInfo
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- 239000003245 coal Substances 0.000 title claims abstract description 97
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 47
- 239000001257 hydrogen Substances 0.000 title claims abstract description 47
- 230000006698 induction Effects 0.000 title claims abstract description 7
- 239000000523 sample Substances 0.000 claims abstract description 73
- 239000011435 rock Substances 0.000 claims abstract description 47
- 239000000956 alloy Substances 0.000 claims abstract description 25
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims description 45
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 15
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000004451 qualitative analysis Methods 0.000 abstract 1
- 230000008859 change Effects 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
- G01N33/222—Solid fuels, e.g. coal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
A coal rock mass hydrogen bond rupture induction instrument belongs to the technical field of coal rock mass testing instruments. Coal rock mass hydrogen bond breaks induction apparatus, include the base and set up in the temperature sensor, pressure sensor, attemperator, regulator and the alloy probe of base, the outside of base is provided with the shield cover, and temperature sensor, pressure sensor, attemperator, regulator and alloy probe all are connected with the computer, the computer controls attemperator and regulator, records and shows the relation of electric charge and temperature, pressure. The coal and rock mass hydrogen bond rupture induction instrument conducts qualitative analysis on a coal sample before mining, and prepares for mining work by exploring the coal and rock mass hydrogen bond rupture conditions so as to reduce the coal and rock mass hydrogen bond rupture in the mining process and improve the quality and the combustion rate of coal.
Description
Technical Field
The invention relates to the technical field of coal-rock mass testing instruments, in particular to a coal-rock mass hydrogen bond rupture sensor.
Background
Coal is the richest fossil fuel resource for human beings, plays an extremely important role in the development of human society, is a mixture with a very complex and extremely inhomogeneous composition structure, has high similarity of coal macromolecule structure, and is formed by crosslinking amorphous macromolecules through chemical bonds and non-chemical bonds. Non-chemical bonds are mainly van der waals forces and hydrogen bonds, and from the industrial point of view, coal is regarded as industrial grain and is an important amorphous mineral energy source. Research shows that hydrogen bonds have great relationship with brittleness of coal and properties similar to rocks, the hydrogen bonds also have great influence on swelling behavior, pyrolysis behavior, reactivity and the like of the coal, but the hydrogen bonds in the coal are broken under the influence of different mining pressures and temperatures, so that the quality of the coal and the rocks is influenced, and the combustion rate of the coal is influenced. Therefore, the method is used for exploring the fracture conditions of the hydrogen bonds of the coal rock mass under different conditions so as to avoid mining conditions and working environments which have great influence on the hydrogen bonds of the coal rock mass as much as possible in the mining process, reduce the fracture of the hydrogen bonds of the coal rock mass and improve the quality of coal, and is a problem which needs to be solved urgently in the mining process of the coal rock mass.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides a coal-rock mass hydrogen bond rupture sensor which is used for qualitatively analyzing a coal sample before mining, exploring the coal-rock mass hydrogen bond rupture conditions to prepare for mining work so as to reduce the coal-rock mass hydrogen bond rupture in the mining process and improve the quality and the combustion rate of coal.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a coal rock hydrogen bond rupture induction instrument comprises a base, and a temperature sensor, a pressure sensor, a temperature adjusting device, a pressure adjusting device and an alloy probe which are arranged on the base, wherein a shielding cover is arranged outside the base;
the temperature sensor, the pressure sensor, the temperature regulating device, the pressure regulating device and the alloy probe are all connected with a computer, and the computer controls the temperature regulating device and the pressure regulating device, records and displays the relation between electric charge and temperature and pressure.
Furthermore, the alloy probe is arranged above the coal sample and is connected with a computer through an amplifying circuit and an A/D converter for detecting charge signals in the shielding case.
Furthermore, the temperature sensor is arranged above the coal sample, is connected with a computer through an A/D converter and is used for collecting the temperature in the shielding case.
Further, pressure sensor sets up in the pressure regulating device to its one side that is close to the coal sample is provided with the baffle, pressure sensor and pressure regulating device all are connected with the computer through the AD converter, and pressure sensor is used for gathering the pressure that the coal sample received, and the pressure regulating device is used for exerting pressure to the coal sample.
Furthermore, the temperature adjusting device is connected with a computer through an A/D converter, and the computer controls the temperature adjusting device to adjust the temperature in the shielding case.
Preferably, the temperature adjusting device adopts a resistance heater.
Preferably, the pressure regulating device adopts an alternating current motor type electric push rod.
Further, the computer controls the temperature regulating device and the pressure regulating device, and the specific process of recording and displaying the relation between the electric charge and the temperature and the pressure is as follows:
when the required pressure is kept unchanged, the computer controls the pressure regulating device to keep the pressure borne by the coal sample at a set value; the computer controls the temperature adjusting device to gradually increase the temperature in the shielding cover, at the moment, the temperature data collected by the temperature sensor and the charge data collected by the alloy probe are input into the computer respectively, and the computer displays a relation image of the temperature and the generated charge under the set pressure;
when the required temperature is kept unchanged, the computer controls the temperature adjusting device to keep the temperature of the coal sample at a set value; the computer controls the pressure regulating device to gradually increase the pressure on the coal sample, at the moment, the pressure data collected by the pressure sensor and the charge data collected by the alloy probe are input into the computer respectively, and the computer displays the relation image of the pressure and the generated charge under the set temperature.
The invention has the beneficial effects that:
1) the method can set the conditions of easy occurrence of hydrogen bond rupture of the coal rock mass, has wide variation range, simple and convenient operation and strong practicability, and can explore the relationship of temperature and pressure change on the hydrogen bond rupture of the coal rock mass according to the charge generation condition of the coal sample under different temperatures and pressures;
2) the computer controls the temperature adjusting and pressure adjusting device to accurately control the coal sample conditions through sensor feedback information, the alloy probe detects the situation that hydrogen bonds of coal and rock masses generate electric charges under different temperature and pressure conditions, the computer generates curve images of the relationship among temperature, pressure and electric charges, workers obtain the coal and rock mass hydrogen bond rupture rule under the influence of temperature and pressure according to the curve images, the working environment with large influence on the coal and rock mass hydrogen bonds is avoided as far as possible according to the coal and rock mass hydrogen bond rupture rule, the optimal mining conditions and working environment are set before mining, the hydrogen bond rupture degree is reduced, and the quality and the combustion rate of coal are improved;
3) the invention can be used in coal mines and overcomes the defect that the existing experimental analysis device can not be used in frames.
Drawings
FIG. 1 is a schematic structural diagram of a coal-rock mass hydrogen bond rupture sensor provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of an amplification circuit provided by an embodiment of the invention;
FIG. 3 is a flow chart of the relationship between the measured pressure and the charge when the temperature of the coal sample is A according to the embodiment of the present invention;
FIG. 4 is a flow chart of the relationship between the measured temperature and the charge when the pressure of the coal sample is D according to the embodiment of the present invention;
FIG. 5 is a flow chart of analysis temperature vs. hydrogen bond rupture provided by an embodiment of the present invention.
Reference numerals in the drawings of the specification include:
101-alloy probe, 102-base, 103-temperature sensor, 104-pressure sensor, 105-shielding case, 106-pressure regulating device, 107-computer, 108-A/D converter, 109-amplifying circuit, 110-temperature regulating device and 111-coal sample.
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.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In order to solve the problems in the prior art, as shown in fig. 1 to 5, the invention provides a coal-rock mass hydrogen bond rupture sensor, which comprises a base 102, and a temperature sensor 103, a pressure sensor 104, a temperature regulating device 110, a pressure regulating device 106 and an alloy probe 101 which are arranged on the base 102, wherein a shielding cover 105 is arranged outside the base 102;
the temperature sensor 103, the pressure sensor 104, the temperature adjusting device 110, the pressure adjusting device 106 and the alloy probe 101 are all connected with a computer 107, and the computer 107 controls the temperature adjusting device 110 and the pressure adjusting device 106 and records and displays the relationship between the electric charge and the temperature and the pressure.
As shown in fig. 1, the alloy probe 101 is disposed above a coal sample 111, and is connected to a computer 107 via an amplifier circuit 109 and an a/D converter 108, and is used for detecting a charge signal in the shield case 105. The temperature sensor 103 is disposed above the coal sample 111, and is connected to the computer 107 through the a/D converter 108, for collecting the temperature inside the shield case 105. The pressure sensor 104 is arranged on the pressure regulating device 106, a baffle is arranged on one side of the pressure sensor 104 close to the coal sample 111, the pressure sensor 104 and the pressure regulating device 106 are both connected with the computer 107 through the A/D converter 108, the pressure sensor 104 is used for collecting the pressure on the coal sample 111, and the pressure regulating device 106 is used for applying pressure to the coal sample 111. The temperature adjusting device 110 is connected to the computer 107 through the a/D converter 108, and the computer 107 controls the temperature adjusting device 110 to adjust the temperature inside the shield case 105.
As shown in FIG. 2, the amplifying circuit 109 includes an amplifier and a resistor R1、R2、R3And a capacitor C1、C2、C3(ii) a Amplifier 4 pin connected with reverse voltage input and C2One end, C2The other end is grounded; capacitor 8 pin connected with forward voltage input and C1One end, C1The other end is grounded; amplifier 2 pin connection resistor R1One end and R3One end, R1The other end is grounded, R3The other end is connected with a pin 1 of the amplifier, and a pin 3 of the amplifier is connected with a resistor R2One end, R2The other end is connected with the probe and the capacitor C3One terminal, capacitor C3The other end is grounded; the signal of the amplifying circuit 109 is inputted from the probe, and the signal is outputted from the amplifier 1 pin and inputted to the computer 107 via the A/D converter 108.
Preferably, the temperature control device 110 is a resistance heater, and the computer 107 controls the resistance heater by controlling a relay switch.
Preferably, the pressure adjusting device 106 is an ac motor type electric push rod, which is an electric drive device that converts a rotational motion of a motor into a linear reciprocating motion of a push rod, and applies pressure to the coal sample 111 through the push rod under the control of the computer 107.
In this embodiment, the temperature sensor 103, the temperature adjusting device 110, the pressure adjusting device 106, the pressure sensor 104 and the alloy probe 101 are all mounted on the base 102, and the temperature sensor 103, the temperature adjusting device 110, the pressure adjusting device 106 and the pressure sensor 104 are all connected with the computer 107 through the a/D converter 108. The shielding cover 105 is hermetically disposed outside the base 102, has a thermal insulation and insulation shielding function, and provides a closed space for the coal sample 111. A support frame fixedly connected with the base 102 is arranged on one side of the coal sample 111, and plays a role of supporting when the pressure regulating device 106 applies pressure to the coal sample 111; the other side of the coal sample 111 is provided with a pressure regulating device 106, the front end of the pressure regulating device 106 is provided with a pressure sensor 104, when the pressure regulating device 106 applies pressure to the coal sample 111, the pressure sensor 104 is in contact with the coal sample 111 through a baffle plate, the baffle plate has a protection effect on the pressure sensor 104, the service life of the pressure sensor is prolonged, temperature and pressure information in an inductor is fed back by the temperature sensor 103 and the pressure sensor 104 and is input into a computer 107 through an A/D converter 108, and the computer 107 controls the temperature regulating device 110 and the pressure regulating device 106 to work according to temperature and pressure setting conditions so as to change the conditions of the coal sample 111. The alloy probe 101 detects a charge signal, the detected signal is input into an amplifying circuit 109, the signal is amplified by the amplifying circuit 109 and then converted into a digital signal by an A/D converter 108 and input into a computer 107, the computer 107 records and displays the relationship between temperature, pressure and charge to generate a corresponding temperature-charge or pressure-charge image, a worker can obtain the change condition of the charge along with the change of the temperature or the pressure according to the curve image and find out corresponding temperature or pressure information according to the generated charge peak value, so that the temperature or the pressure can be obtained to seriously influence the hydrogen bond rupture of the coal rock mass, and the condition can be avoided as much as possible during mining.
The computer 107 controls the temperature regulating device 110 and the pressure regulating device 106, and the specific process of recording and displaying the relationship between the electric charge and the temperature and the pressure is as follows:
when the required pressure is kept unchanged, the computer 107 controls the pressure regulating device 106 to keep the pressure applied to the coal sample 111 at a set value; the computer 107 controls the temperature adjusting device 110 to gradually increase the temperature in the shielding case 105, namely, from a lower temperature to a higher temperature, at this time, the temperature data collected by the temperature sensor 103 and the charge data collected by the alloy probe 101 are respectively input into the computer 107, and the computer 107 displays a relation image of the temperature and the generated charge under the set pressure; the staff can find out the peak value of the generated charges and the temperature corresponding to the peak value according to the image, and the serious influence of the temperature on the hydrogen bond rupture of the coal rock mass under the set pressure is obtained;
when the temperature is required to be kept unchanged, the computer 107 controls the temperature adjusting device 110 to keep the temperature of the coal sample 111 at a set value; the computer 107 controls the pressure regulating device 106 to gradually increase the pressure on the coal sample 111, namely, the pressure is increased from lower pressure to higher pressure, at the moment, the pressure data collected by the pressure sensor 104 and the charge data collected by the alloy probe 101 are respectively input into the computer 107, the computer 107 displays a relation image of pressure and generated charge at a set temperature, and a worker can find out a peak value of the generated charge and the pressure corresponding to the peak value according to the image to obtain that the pressure has serious influence on the hydrogen bond rupture of the coal rock body at the set temperature.
As shown in fig. 3, when the influence of the pressure at the preset temperature a on the hydrogen bond rupture of the coal rock mass is researched, the coal sample 111 is placed on the base 102, the shielding case 105 is covered, the sensor is started, the preset temperature value a and the preset pressure value B are input into the computer 107, the temperature sensor 103 detects the temperature in the shielding case 105, temperature data is input into the computer 107, the computer 107 judges whether the temperature in the shielding case 105 is the preset temperature value a, if not, the computer 107 controls the temperature adjusting device 110 to adjust the temperature in the shielding case 105 until the preset temperature value a is reached, and the temperature in the shielding case 105 is kept unchanged at the preset temperature value a; at this time, the pressure sensor 104 and the alloy probe 101 work synchronously, the pressure sensor 104 detects the pressure applied to the coal sample 111 and inputs a pressure signal into the computer 107, the computer 107 judges whether the pressure applied to the coal sample 111 is a preset pressure value B, if not, the computer 107 controls the pressure regulating device 106 to pressurize at a constant speed until the pressure applied to the coal sample 111 is the preset pressure value B, the operation is stopped, and the result output by the computer 107 is a curve image of the charge at the temperature a and the pressure applied to the coal sample 111.
As shown in fig. 4, when the influence of temperature on hydrogen bond rupture of the coal rock mass under a preset pressure D is detected, the coal sample 111 is placed on the base 102 and the shielding case 105 is covered, the sensor is started, a preset temperature value C and a preset pressure value D are input into the computer 107, the pressure sensor 104 detects the pressure applied to the coal rock, if the computer 107 determines that the pressure applied to the coal rock is not the preset pressure value D, the computer 107 controls the pressure regulating device 106 to regulate the pressure applied to the coal rock to reach and maintain the preset pressure value D, at this time, the temperature sensor 103 and the alloy probe 101 work synchronously, the temperature sensor 103 detects the temperature in the shielding case 105 and inputs the temperature into the computer 107, the computer 107 determines whether the temperature in the shielding case 105 is the preset temperature value C, if the temperature is not the preset temperature value C, the computer 107 controls the temperature regulating device 110 to regulate the temperature at a constant speed, when the temperature sensor 103 detects that the temperature in the shielding case, and stopping working, and outputting a curve image of the temperature and the charge when the coal sample 111 is subjected to the pressure D by the computer 107.
The process for analyzing the relationship between temperature and hydrogen bond rupture is shown in fig. 5, a charge signal released by the coal rock body detected by the alloy probe 101 and a temperature signal collected by the temperature sensor 103 are converted into digital signals through the a/D converter 108 and input to the computer 107, the computer 107 converts the received signals into corresponding charge and temperature values, a temperature-charge curve image is established and output by the display, and a worker analyzes the curve characteristics to obtain the change rule of the charge along with the temperature and find out the temperature corresponding to the charge peak value, so that the temperature has serious influence on the hydrogen bond rupture of the coal rock body. Similarly, the pressure-charge curve image analysis can obtain that the influence of a certain pressure on the hydrogen bond rupture of the coal rock mass is serious.
In practical use, because the coal grades of different coal beds are not necessarily the same, the coal samples 111 of different coal beds are respectively taken before mining, the influence of different pressures and temperatures on the hydrogen bond fracture of the coal rock is respectively analyzed by using the method, and different mining temperatures and pressures are respectively set for different coal beds according to the analyzed result so as to ensure that the fracture degree of the hydrogen bond of the coal rock is minimum.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. The coal rock hydrogen bond rupture induction instrument is characterized by comprising a base, a temperature sensor, a pressure sensor, a temperature adjusting device, a pressure adjusting device and an alloy probe, wherein the temperature sensor, the pressure sensor, the temperature adjusting device, the pressure adjusting device and the alloy probe are arranged on the base;
the temperature sensor, the pressure sensor, the temperature regulating device, the pressure regulating device and the alloy probe are all connected with a computer, and the computer controls the temperature regulating device and the pressure regulating device, records and displays the relation between electric charge and temperature and pressure.
2. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the alloy probe is arranged above the coal sample and is connected with a computer through an amplifying circuit and an A/D converter for detecting charge signals.
3. The coal-rock mass hydrogen bond rupture sensor as claimed in claim 1, wherein the temperature sensor is arranged above the coal sample and connected with the computer through an A/D converter for collecting the temperature in the shielding case.
4. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the pressure sensor is arranged on the pressure regulating device, a baffle is arranged on one side of the pressure sensor close to the coal sample, the pressure sensor and the pressure regulating device are both connected with the computer through an A/D converter, the pressure sensor is used for collecting pressure applied to the coal sample, and the pressure regulating device is used for applying pressure to the coal sample.
5. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the temperature adjusting device is connected with a computer through an A/D converter, and the computer controls the temperature adjusting device to adjust the temperature in the shielding case.
6. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the temperature regulating device adopts a resistance heater.
7. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the pressure regulating device is an alternating current motor type electric push rod.
8. The coal-rock mass hydrogen bond rupture sensor according to claim 1, wherein the computer controls the temperature regulating device and the pressure regulating device, and the specific process of recording and displaying the relationship between the electric charge and the temperature and the pressure is as follows:
when the required pressure is kept unchanged, the computer controls the pressure regulating device to keep the pressure borne by the coal sample at a set value; the computer controls the temperature adjusting device to gradually increase the temperature in the shielding cover, at the moment, the temperature data collected by the temperature sensor and the charge data collected by the alloy probe are input into the computer respectively, and the computer displays a relation image of the temperature and the generated charge under the set pressure;
when the required temperature is kept unchanged, the computer controls the temperature adjusting device to keep the temperature of the coal sample at a set value; the computer controls the pressure regulating device to gradually increase the pressure on the coal sample, at the moment, the pressure data collected by the pressure sensor and the charge data collected by the alloy probe are input into the computer respectively, and the computer displays the relation image of the pressure and the generated charge under the set temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010510564.5A CN111624326A (en) | 2020-06-08 | 2020-06-08 | Coal petrography body hydrogen bond induction apparatus that breaks |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010510564.5A CN111624326A (en) | 2020-06-08 | 2020-06-08 | Coal petrography body hydrogen bond induction apparatus that breaks |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116099A (en) * | 2013-01-25 | 2013-05-22 | 辽宁工程技术大学 | Testing device for coal-rock temperature affection on coal-rock electric charges |
| CN103135017A (en) * | 2013-01-25 | 2013-06-05 | 辽宁工程技术大学 | Test device for charge induction of coal rocks under load |
| CN103915018A (en) * | 2014-04-30 | 2014-07-09 | 辽宁工程技术大学 | Coal rock three-shaft loading slow pyroelectric detection experiment device and experiment method thereof |
| CN104198679A (en) * | 2014-09-17 | 2014-12-10 | 辽宁工程技术大学 | Full-waveform synchronous integrated monitoring system and method for deformation and fracture process of coal rock |
| CN110687212A (en) * | 2019-11-14 | 2020-01-14 | 西安科技大学 | Device and system for detecting dynamic crack development rule of coal rock under external condition |
-
2020
- 2020-06-08 CN CN202010510564.5A patent/CN111624326A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116099A (en) * | 2013-01-25 | 2013-05-22 | 辽宁工程技术大学 | Testing device for coal-rock temperature affection on coal-rock electric charges |
| CN103135017A (en) * | 2013-01-25 | 2013-06-05 | 辽宁工程技术大学 | Test device for charge induction of coal rocks under load |
| CN103915018A (en) * | 2014-04-30 | 2014-07-09 | 辽宁工程技术大学 | Coal rock three-shaft loading slow pyroelectric detection experiment device and experiment method thereof |
| CN104198679A (en) * | 2014-09-17 | 2014-12-10 | 辽宁工程技术大学 | Full-waveform synchronous integrated monitoring system and method for deformation and fracture process of coal rock |
| CN110687212A (en) * | 2019-11-14 | 2020-01-14 | 西安科技大学 | Device and system for detecting dynamic crack development rule of coal rock under external condition |
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Application publication date: 20200904 |