不同温度下岩石电荷感应试验
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摘要
利用建立的温度对岩体电荷感应影响试验系统,研究了不同温度下花岗岩、砂岩电荷感应变化特征和规律。从试验中观察到,花岗岩、砂岩温度达到30℃左右,开始有微弱电荷感应信号产生。随温度升高,电荷感应信号逐渐增强,花岗岩温度达到100℃,砂岩温度达到150℃后,电荷感应信号随温度的升高增幅较快。结果表明:随温度变化,岩体存在热电荷阈值。通过岩石电荷感应的研究,对进一步深入研究煤岩破裂电荷的产生机理具有一定的作用。
Using the test system of rock's charge induction influence on temperature,studied the characteristics and rules of rock's charge induction under different temperature.From the experiment observed,began to have signal of charge induction when granite and sandstone at about 30 ℃.As the temperature rise further,the temperature of granite reaches 150 ℃ and the temperature of sandstone reaches 100 ℃,the signal of charge induction increases rapidly.The results show that rock exists threshold value with the temperature change.Study of charge induction of rock has a certain effect on a further research the producing mechanism of coal rock burst charge.
Using the test system of rock's charge induction influence on temperature,studied the characteristics and rules of rock's charge induction under different temperature.From the experiment observed,began to have signal of charge induction when granite and sandstone at about 30 ℃.As the temperature rise further,the temperature of granite reaches 150 ℃ and the temperature of sandstone reaches 100 ℃,the signal of charge induction increases rapidly.The results show that rock exists threshold value with the temperature change.Study of charge induction of rock has a certain effect on a further research the producing mechanism of coal rock burst charge.
引文
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[20]张渊,张贤,赵阳升.砂岩的热破裂过程[J].地球物理学报,2005,48(3):656-659.Zhang Yuan,Zhang Xian,Zhao Yangsheng.Process of sandstonethermal cracking[J].Chinese J.Geophysics,2005,48(3):656-659.
[2]何继善,吕绍林.瓦斯突出地球物理研究[M].北京:煤炭工业出版社,1999.
[3]吴立新,王金庄.煤岩受压红外热象与辐射温度特征实验[J].中国科学(D辑),1998,28(1):41-46.Wu Lixin,Wang Jinzhuang.Experimental study of infrared radiationfeatures of coal and rocks under loading[J].Science in China(D),1998,28(1):41-46.
[4]Frid V.Rockburst hazard forecast by electromagnetic radiation excit-ed by rock fracture[J].Rock Mechanics and Rock Engineering,1997,30(4):229-236.
[5]刘晓斐,王恩元,何学秋,等.回采工作面应力分布的电磁辐射规律[J].煤炭学报,2007,32(10):1019-1023.Liu Xiaofei,Wang Enyuan,He Xueqiu,et al.Electromagnetic radia-tion laws of the stress distribution in working face[J].Journal ofChina Coal Society,2007,32(10):1019-1023.
[6]王恩元,李忠辉,刘贞堂,等.受载煤体表面电位效应的实验研究[J].地球物理学报,2009,52(5):1318-1325.Wang Enyuan,Li Zhonghui,Liu Zhentang,et al.Experimental studyon surface potential effect of coal under load[J].Chinese J.Geo-phys,2009,52(5):1318-1325.
[7]赵扬锋,潘一山,李国臻,等.岩石变形破裂过程中电荷感应信号的检测[J].防灾减灾工程学报,2010,30(3):252-256.Zhao Yangfeng,Pan Yishan,Li Guozhen,et al.Measuring of thecharge-induced signal of rock during the deformation and fractureprocess[J].Journal of Disaster Prevention and Mitigation Engineer-ing,2010,30(3):252-256.
[8]Kilkeev R S.力荷载下的岩石电场[A].徐玉凤,译.苏联地震预报研究文集[C].北京:地震出版社,1993:31-34.
[9]Takeuchi Akihiro,Bobby W S Lau,Friedemann T Freund.Currentand surface potential induced by stress-activated positive holes in ig-neous rocks[J].Physics and Chemistry of the Earth,2006(31):240-217.
[10]Kuksenko V S,Makhmudov K F.Mechanically-induced electricaleffects in natural dielectrics[J].Technical Physics Letters,1997,23(2):126-127.
[11]Kuksenko V S,Makhmudov K F,Ponomarev A V.Relaxation ofelectric fields induced by mechanical loading in natural dielectrics[J].Physics of the Solid State,1997,39(7):1065-1066.
[12]Eccles D,Sammonds P R,Glint O C.Laboratory studies of electri-cal potential during rock failure[J].International Journal of RockMechanics&Mining Sciences,2005(42):933-949.
[13]郝锦绮,刘力强,龙海丽,等.双轴压力下岩样自电位变化实验的新结果[J].地球物理学报,2004,47(3):475-482.Hao Jinqi,Liu Liqiang,Long Haili,et al.New result of the experi-ment on self-potential change of rocks under biaxial compression[J].Chinese J.Geophysics,2004,47(3):475-482.
[14]孙正江,王丽华,高宏.岩石标本破裂时的电磁辐射和光发射[J].地球物理学报,1986,29(5):491-495.Sun Zhengjiang,Wang Lihua,Gao Hong.Electromagnetic emissionand light radiation during fracture of rock samples[J].Chinese J.Geophysics,1986,29(5):491-495.
[15]郭自强,罗祥麟,钱书清,等.矿山爆破中的电磁辐射[J].地球物理学报,1999,42(6):834-840.Guo Ziqiang,Luo Xianglin,Qian Shuqing,et al.Electromagneticemissions during quarry blasting[J].Chinese J.Geophysics,1999,42(6):834-840.
[16]波诺马廖夫A B.岩石形变与破裂的电现象[A].萨多夫斯基.苏联地震顶报研究义集[C].张肇诚,译.北京:地震出版社,1993.
[17]王丽华,孙正江,陈化然.岩石样品破裂时带电现象的研究[A].80年代中国地球物理学进展[C].北京:学术书刊出版社,1989:204-209.
[18]Nishizawa Osamu,Ishido Tsuneo,Lei Xinglin.Charge of electricpotential in water-saturated rock compression[A].InternationalWorkshop on Electromagnetic Phenomena Related to EarthquakePrediction[C].1993.
[19]Enomoto Y,Shimamoto T,Tsutumi A.Rapid electric charge fluctua-tion prior to rock fracturing:its potential use for an immediateearthquake precursor[A].International Workshop on Electromag-netic Phenomena Related to Earthquake Prediction[C].1993.
[20]张渊,张贤,赵阳升.砂岩的热破裂过程[J].地球物理学报,2005,48(3):656-659.Zhang Yuan,Zhang Xian,Zhao Yangsheng.Process of sandstonethermal cracking[J].Chinese J.Geophysics,2005,48(3):656-659.
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