WO2015176615A1 - Method for infrared radiation monitoring tests of coal rock fracture development - Google Patents

Method for infrared radiation monitoring tests of coal rock fracture development Download PDF

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WO2015176615A1
WO2015176615A1 PCT/CN2015/078729 CN2015078729W WO2015176615A1 WO 2015176615 A1 WO2015176615 A1 WO 2015176615A1 CN 2015078729 W CN2015078729 W CN 2015078729W WO 2015176615 A1 WO2015176615 A1 WO 2015176615A1
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coal rock
infrared radiation
test block
rock test
coal
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PCT/CN2015/078729
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French (fr)
Chinese (zh)
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马立强
周焘
王飞
于斌
匡铁军
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马立强
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces

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  • the invention relates to an infrared radiation monitoring test method, in particular to an infrared radiation monitoring test method suitable for studying coal rock fracture development in a mine, which belongs to the field of infrared remote sensing-rock mechanics.
  • Mine coal pillar bearing and its yield failure, mine rockburst, coal burst, coal rock and gas outburst, roof movement, etc. are all dynamic processes under the combined action of ground stress and mining stress. While moving and deforming, they are accompanied by the adjustment of the internal structure of diagenetic materials and some physical and chemical phenomena, including internal damage, resistivity changes, and energy accumulation, dissipation, transformation, and electronic transitions, such as the conversion of a portion of mechanical energy into heat. And expressed in the form of infrared radiation.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide a method for monitoring infrared radiation monitoring of coal rock cracks with simple method, good effect and accurate test.
  • the infrared radiation monitoring test method for the coal rock crack development of the invention comprises using a rock press, an infrared thermal imager and a computer, and respectively setting a support for placing the coal rock test block on both sides of the work bench of the rock press,
  • the surface of the support is on the same level as the workbench, and the prepared three coal rock test blocks are respectively set on the workbench and the support.
  • the coal rock test block set on the workbench is the loaded coal rock test block.
  • the two coal and rock test blocks set on the support are referenced to the coal rock test block, and the loaded coal rock test block is separated from the reference coal rock test block by the baffle to avoid mutual interaction between the coal and rock test blocks during the loading process.
  • the infrared thermal imager connected to the computer is located at the distance L from the coal rock test block on the rock press workbench, and the coal rock test block is monitored and analyzed by the infrared thermal imager, until all the coal rock test blocks are After the infrared radiation temperature is relatively stable, the loaded coal rock test block is pressed by the rock press according to the set pressure and speed, and the infrared radiation of the loaded coal rock test block and the reference coal rock test block is recorded by the infrared thermal imager.
  • the average infrared radiation temperature data of the loaded coal rock test block and the reference coal rock test block are processed by computer, and the infrared radiation average temperature data of the two reference coal rock test blocks are respectively subtracted from the infrared radiation average temperature data of the loaded coal rock test block.
  • the temperature data that is, the true infrared radiation data of the desired coal rock fissure development.
  • the present invention can reduce the influence of environmental and background factors on the authenticity of the test results, and also reduce the influence of errors caused by the temperature changes of the coal rock test blocks themselves. It overcomes the shortcomings of the previous environmental and background factors in the infrared radiation monitoring test of the coal rock test block, and reduces the error caused by the test conditions and the environment. Compared with the prior art, the test results are greatly improved. Accuracy, scientificity and effectiveness have guiding significance for the infrared radiation monitoring test of coal and rock blocks. The method is simple, the use effect is good, the test is accurate, and has wide practicality.
  • Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
  • the method for monitoring infrared radiation monitoring of coal rock cracks of the invention comprises using rock press 1, infrared thermal imager 5 and computer 6, and the specific steps of the test are as follows:

Abstract

A method for experiments to monitor coal rock fracture development using infrared radiation monitoring, for use in experiments using infrared radiation in monitoring coal rock fracture development for the study of coal rock deformation in mines. Supports (2) for placing coal rock test blocks (3) are respectively arranged on two sides of a worktable (8) of a rock press (1). Three prepared coal rock test blocks (3) are respectively arranged on the worktable (8) and the supports (2). The rock press (1) presses the loaded coal rock test blocks (3) according to a set pressure and speed. A computer (6) processes infrared radiation average temperature data of a loaded coal rock test block (7) and reference coal rock test blocks (3), and required real infrared radiation data of coal rock fracture development is obtained. The method overcomes the shortcomings of large environmental and background factor influences in previous infrared radiation monitoring tests of coal rock test block loaded damage, thereby reducing errors caused by the test conditions and environment, and significantly improving the accuracy, scientific nature and effectiveness of the test results. The present invention has guiding significance for infrared radiation monitoring tests of coal rock test blocks.

Description

一种煤岩裂隙发育红外辐射监测试验方法Infrared radiation monitoring test method for coal rock fissure development 技术领域Technical field
本发明涉及一种红外辐射监测试验方法,尤其是一种适用于研究矿山煤岩变形情况的煤岩裂隙发育红外辐射监测试验方法,属于红外遥感-岩石力学领域。The invention relates to an infrared radiation monitoring test method, in particular to an infrared radiation monitoring test method suitable for studying coal rock fracture development in a mine, which belongs to the field of infrared remote sensing-rock mechanics.
背景技术Background technique
矿山煤柱承载及其屈服破坏、矿山岩爆、煤爆、煤岩与瓦斯突出、顶板运动等,均是受地应力和采动应力共同作用下的动力过程。它们在移动变形的同时,必然伴随有成岩物质内部结构的调整和某些物理化学现象,其中包括内部损伤、电阻率变化以及能量积累、耗散、转化和电子跃迁等,如一部分机械能转化为热能,并以红外辐射的形式表现出来。Mine coal pillar bearing and its yield failure, mine rockburst, coal burst, coal rock and gas outburst, roof movement, etc. are all dynamic processes under the combined action of ground stress and mining stress. While moving and deforming, they are accompanied by the adjustment of the internal structure of diagenetic materials and some physical and chemical phenomena, including internal damage, resistivity changes, and energy accumulation, dissipation, transformation, and electronic transitions, such as the conversion of a portion of mechanical energy into heat. And expressed in the form of infrared radiation.
从20世纪90年代初开始,为研究岩石变形与红外辐射变化的关系,许多专家学者陆续建立了室内热红外辐射观测试验系统,开展了对多种岩石以及煤等材料的变形红外辐射试验,引起了广泛的注意。但是,他们的观测结果有较大的离散性,有一些与传统理论相背离。这是由于环境因素和背景因素的影响,被测目标表面温度不断地以辐射、对流和传导等形式和外界介质进行热交换,其红外辐射值随时都会发生变化。以往试验过程中都没有加入参照物并对参照物的红外辐射信息进行数据处理,也没有监测环境因素和背景因素对未受载煤岩体红外辐射信息的影响。Since the beginning of the 1990s, in order to study the relationship between rock deformation and infrared radiation changes, many experts and scholars have successively established indoor thermal infrared radiation observation test systems, and carried out deformation infrared radiation tests on various rocks and coal materials. A lot of attention. However, their observations are largely discrete, and some are contrary to traditional theories. This is due to the influence of environmental factors and background factors. The surface temperature of the measured target is continuously exchanged with the external medium in the form of radiation, convection and conduction, and the infrared radiation value changes at any time. In the past, no reference materials were added in the test and the infrared radiation information of the reference materials was processed. The environmental factors and background factors were not monitored to affect the infrared radiation information of the unloaded coal rock mass.
发明内容Summary of the invention
技术问题:本发明的目的是克服已有技术中的不足之处,提供一种方法简单、效果好、测试准确的煤岩裂隙发育红外辐射监测试验方法。Technical Problem: The object of the present invention is to overcome the deficiencies in the prior art, and to provide a method for monitoring infrared radiation monitoring of coal rock cracks with simple method, good effect and accurate test.
技术方案:本发明的煤岩裂隙发育红外辐射监测试验方法,包括采用岩石压力机、红外热像仪、计算机,在岩石压力机的工作台的两侧分别设置安放煤岩试块的支座,支座表面与工作台在同一水平面上,将制备好的三块煤岩试块分别设在工作台和支座上,设在工作台上的一块煤岩试块为受载煤岩试块,设在支座上的两块煤岩试块为参照煤岩试块,用挡板将受载煤岩试块与参照煤岩试块隔开,避免加载过程中煤岩试块之间的相互干扰,将与计算机相连的红外热像仪设在离岩石压力机工作台上的煤岩试块距离L处,通过红外热像仪对煤岩试块进行监测分析,待全部煤岩试块的红外辐射温度相对稳定后,通过岩石压力机按设定的压力和速度对受载煤岩试块施压,同时由红外热像仪记录受载煤岩试块及参照煤岩试块的红外辐射数据,直至受载煤岩试块加载破裂;通过计算机处理受载煤岩试块和参照煤岩试块的红外辐射平均温度数据,用受载煤岩试块的红外辐射平均温度数据分别减去两个参照煤岩试块红外辐射平均温度数据,即得到所需煤岩裂隙发育的真实红外辐射数据。Technical solution: The infrared radiation monitoring test method for the coal rock crack development of the invention comprises using a rock press, an infrared thermal imager and a computer, and respectively setting a support for placing the coal rock test block on both sides of the work bench of the rock press, The surface of the support is on the same level as the workbench, and the prepared three coal rock test blocks are respectively set on the workbench and the support. The coal rock test block set on the workbench is the loaded coal rock test block. The two coal and rock test blocks set on the support are referenced to the coal rock test block, and the loaded coal rock test block is separated from the reference coal rock test block by the baffle to avoid mutual interaction between the coal and rock test blocks during the loading process. Interference, the infrared thermal imager connected to the computer is located at the distance L from the coal rock test block on the rock press workbench, and the coal rock test block is monitored and analyzed by the infrared thermal imager, until all the coal rock test blocks are After the infrared radiation temperature is relatively stable, the loaded coal rock test block is pressed by the rock press according to the set pressure and speed, and the infrared radiation of the loaded coal rock test block and the reference coal rock test block is recorded by the infrared thermal imager. Data until the loaded coal rock test block is broken The average infrared radiation temperature data of the loaded coal rock test block and the reference coal rock test block are processed by computer, and the infrared radiation average temperature data of the two reference coal rock test blocks are respectively subtracted from the infrared radiation average temperature data of the loaded coal rock test block. The temperature data, that is, the true infrared radiation data of the desired coal rock fissure development.
在煤岩试块加载前,通过红外热像仪的监测分析,待全部煤岩试块温度相对稳定后再进 行加载试验,以减小试块自身温度的变化所带来的误差影响。Before the loading of the coal rock test block, through the monitoring and analysis of the infrared thermal imager, the temperature of all the coal rock test blocks is relatively stable and then re-entered. Line loading test to reduce the impact of errors caused by changes in the temperature of the test block itself.
所述红外热像仪设在离煤岩试块的距离L为1-3m.。The infrared camera is disposed at a distance L of 1-3 m. from the coal rock test block.
有益效果:由于采用了上述技术方案,本发明可减小环境和背景因素对试验结果真实性的影响,同时也减小了由于煤岩试块自身温度变化所带来的误差影响。克服了以往煤岩试块受载破坏红外辐射监测试验中环境和背景因素影响大的缺点,减小了试验条件和环境所造成的误差,与现有技术相比,极大地提高了试验结果的准确性、科学性、有效性,对于煤岩试块红外辐射监测试验具有指导意义。其方法简单,使用效果好,测试准确,具有广泛的实用性。Advantageous Effects: Due to the adoption of the above technical solutions, the present invention can reduce the influence of environmental and background factors on the authenticity of the test results, and also reduce the influence of errors caused by the temperature changes of the coal rock test blocks themselves. It overcomes the shortcomings of the previous environmental and background factors in the infrared radiation monitoring test of the coal rock test block, and reduces the error caused by the test conditions and the environment. Compared with the prior art, the test results are greatly improved. Accuracy, scientificity and effectiveness have guiding significance for the infrared radiation monitoring test of coal and rock blocks. The method is simple, the use effect is good, the test is accurate, and has wide practicality.
附图说明DRAWINGS
图1是本发明的煤岩裂隙发育红外辐射监测试验设备结构示意图。1 is a schematic view showing the structure of an infrared radiation monitoring test device for coal rock crack development of the present invention.
图2是本图1的A-A剖面示意图。Figure 2 is a cross-sectional view taken along line A-A of Figure 1;
图中:1-岩石压力机,2-支座,3-参照煤岩试块,4-挡板,5-红外热像仪,6-计算机,7-受载煤岩试块,8-工作台。In the picture: 1-rock press, 2-support, 3-reference coal rock test block, 4-baffle, 5-infrared thermal imager, 6-computer, 7-loaded coal rock test block, 8-work station.
具体实施方式detailed description
下面结合附图对本发明的一个实施例作进一步的描述:An embodiment of the present invention will be further described below with reference to the accompanying drawings:
本发明的煤岩裂隙发育红外辐射监测试验方法,包括利用岩石压力机1、红外热像仪5、计算机6,试验具体步骤如下:The method for monitoring infrared radiation monitoring of coal rock cracks of the invention comprises using rock press 1, infrared thermal imager 5 and computer 6, and the specific steps of the test are as follows:
a、在试验开始前关闭实验室的门窗,防止室外的红外辐射能量对试验环境的影响;a. Close the doors and windows of the laboratory before the start of the test to prevent the influence of outdoor infrared radiation energy on the test environment;
b、在岩石压力机1的工作台8的两侧分别设置安放煤岩试块的支座2,支座2表面与工作台8在同一水平面上,将制备好的三块煤岩试块分别设在工作台8和支座2上,设在工作台8上的一块煤岩试块为受载煤岩试块7,设在支座上的两块煤岩试块为参照煤岩试块3;用挡板4将受载煤岩试块7与参照煤岩试块3隔开,避免加载过程中煤岩试块之间相互干扰;将红外热像仪5安置在离岩石压力机1工作台8上的煤岩试块正前方距离L=1-3m处,并与计算机6连接,接通红外热像仪5和计算机6的电源;b. Supporting the bearing block 2 of the coal rock test block on both sides of the workbench 8 of the rock press 1, the surface of the support 2 is on the same level as the workbench 8, and the prepared three coal rock test blocks are respectively It is set on the worktable 8 and the support 2. The coal rock test block set on the workbench 8 is the loaded coal rock test block 7, and the two coal rock test blocks set on the support are the reference coal rock test block. 3; Separate the loaded coal rock test block 7 from the reference coal rock test block 3 by the baffle 4 to avoid mutual interference between the coal rock test blocks during the loading process; and place the infrared thermal imager 5 on the rock press 1 The coal rock test block on the worktable 8 is at a front distance L=1-3m, and is connected to the computer 6, and the power of the infrared camera 5 and the computer 6 is turned on;
c、根据计算机6屏幕显示的红外热像图像,调节红外热像仪5的角度,使受载煤岩试块7和参照煤岩试块3都置于图像的中间;c. adjusting the angle of the infrared camera 5 according to the infrared thermal image displayed on the screen of the computer 6, so that the loaded coal rock test block 7 and the reference coal rock test block 3 are placed in the middle of the image;
d、通过红外热像仪5进行监测分析,待全部煤岩试块的红外辐射温度相对稳定后,通过岩石压力机1按设定的压力和速度对受载煤岩试块7施压,直至煤岩试块加载破裂,红外热像仪5实时记录受载煤岩试块7及参照煤岩试块3的红外辐射数据;d. Monitoring and analysis by infrared thermal imager 5, after the infrared radiation temperature of all coal rock test blocks is relatively stable, the rock pressure machine 1 applies pressure to the loaded coal rock test block 7 according to the set pressure and speed until The coal rock test block is loaded and fractured, and the infrared thermal imager 5 records the infrared radiation data of the loaded coal rock test block 7 and the reference coal rock test block 3 in real time;
e、通过计算机6计算受载煤岩试块7和参照煤岩试块3的红外辐射平均温度数据,并用受载煤岩试块7的红外辐射平均温度数据分别减去两个参照煤岩试块3红外辐射平均温度数据,从而极大减少了环境和背景因素对试验结果真实性的影响; e. Calculate the average infrared radiation temperature data of the loaded coal rock test block 7 and the reference coal rock test block 3 through the computer 6, and subtract the two reference coal rock tests from the infrared radiation average temperature data of the loaded coal rock test block 7 respectively. Block 3 infrared radiation average temperature data, thus greatly reducing the impact of environmental and background factors on the authenticity of the test results;
f、清理岩石压力机1和工作台8上破碎的煤岩试块,把下一个受载煤岩试7块放置到岩石压力机1工作台8上,重复上述步骤,完成下一个煤岩试块的监测实验。 f. Clean the crushed coal rock test block on the rock press 1 and the workbench 8, and place the next 7 pieces of the loaded coal rock test on the rock press 1 workbench 8. Repeat the above steps to complete the next coal rock test. Block monitoring experiment.

Claims (3)

  1. 一种煤岩裂隙发育红外辐射监测试验方法,包括采用岩石压力机(1)、红外热像仪(5)、计算机(6),其特征在于:在岩石压力机(1)的工作台(8)的两侧分别设置安放煤岩试块的支座(2),支座(2)表面与工作台(8)在同一水平面上,将制备好的三块煤岩试块分别设在工作台(8)和支座(2)上,设在工作台(8)上的一块煤岩试块为受载煤岩试块(7),设在支座(2)上的两块煤岩试块为参照煤岩试块(3),用挡板(4)将受载煤岩试块(7)与参照煤岩试块(3)隔开,避免加载过程中煤岩试块之间的相互干扰,将与计算机(6)相连的红外热像仪(5)设在离岩石压力机(1)工作台(8)上的煤岩试块距离L处,通过红外热像仪(5)对煤岩试块进行监测分析,待全部煤岩试块的红外辐射温度相对稳定后,通过岩石压力机(1)按设定的压力和速度对受载煤岩试块(7)施压,同时由红外热像仪(5)记录受载煤岩试块(7)及参照煤岩试块(3)的红外辐射数据,直至受载煤岩试块(7)加载破裂;通过计算机(6)处理受载煤岩试块(7)和参照煤岩试块(3)的红外辐射平均温度数据,用受载煤岩试块(7)的红外辐射平均温度数据分别减去两个参照煤岩试块(3)红外辐射平均温度数据,即得到所需煤岩裂隙发育的真实红外辐射数据。A method for monitoring infrared radiation monitoring of coal rock fissures, comprising using a rock press (1), an infrared thermal imager (5), a computer (6), characterized in that: a bench at a rock press (1) (8) The two sides of the support are placed on the two sides of the coal rock test block (2), the surface of the support (2) is on the same level as the workbench (8), and the three prepared coal rock test blocks are respectively set on the workbench. (8) and the support (2), a coal rock test block set on the workbench (8) is a loaded coal rock test block (7), and two coal rock tests on the support (2) The block is the reference coal rock test block (3), and the loaded coal rock test block (7) is separated from the reference coal rock test block (3) by the baffle (4) to avoid the between the coal and rock test blocks during the loading process. Interfering with each other, the infrared camera (5) connected to the computer (6) is placed at a distance L from the coal rock block on the rock press (1) table (8), and passed through the infrared camera (5). Monitoring and analysis of the coal rock test block, after the infrared radiation temperature of all coal rock test blocks is relatively stable, the rock pressure press (1) applies pressure to the loaded coal rock test block (7) according to the set pressure and speed. At the same time, the infrared thermal imager (5) records the loaded coal rock test block (7) and Refer to the infrared radiation data of the coal rock test block (3) until the loaded coal rock test block (7) is loaded and fractured; the loaded coal rock test block (7) and the reference coal rock test block (3) are processed by computer (6) The average temperature data of infrared radiation is calculated by subtracting the average temperature data of infrared radiation from the two reference coal rock blocks (3) using the infrared radiation average temperature data of the loaded coal rock test block (7), that is, obtaining the desired coal rock fissure development. Real infrared radiation data.
  2. 根据权利要求1所述的一种煤岩裂隙发育红外辐射监测试验方法,其特征在于:在煤岩试块加载前,通过红外热像仪的监测分析,待全部煤岩试块温度相对稳定后再进行加载试验,以减小试块自身温度的变化所带来的误差影响。The method for monitoring infrared radiation monitoring of coal rock cracks according to claim 1, characterized in that: before the loading of the coal rock test block, the monitoring and analysis of the infrared thermal imager is performed, and after the temperature of all the coal rock test blocks is relatively stable, The loading test is then performed to reduce the influence of errors caused by changes in the temperature of the test block itself.
  3. 根据权利要求1所述的一种煤岩裂隙发育红外辐射监测试验方法,其特征在于:所述红外热像仪(5)设在离煤岩试块的距离L为1-3m.。 The method for monitoring infrared radiation monitoring of coal rock cracks according to claim 1, wherein the infrared thermal imager (5) is disposed at a distance L of 1-3 m from the coal rock test block.
PCT/CN2015/078729 2014-05-22 2015-05-12 Method for infrared radiation monitoring tests of coal rock fracture development WO2015176615A1 (en)

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