应力场和电磁场在脆性压电岩体中耦合行为的理论研究
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摘要
基于压电体中的压电本构方程,给出了应力波在含石英等压电介质脆性岩体中的传输效应,计算得到了各种应力波幅值和频率对其辐射的电磁波强度和频段间的关系,并阐明了压电体中应力波和电磁波的耦合机制。在此基础上,对于几种不同晶系结构,给定应力波形式的前提下,指出了压电应变矩阵对压电介质中应力场和电磁场的耦合行为所起的决定性作用。本文的研究结果能较好解释地震和岩石动力破裂过程中的声电光现象。
Based on the constitutive equation of the piezoelectric body,the transmission effect of the stress wave in the rock quartz contained has been presented;the relation between intensity and frequency of the stress wave and the radiated electromagnetic wave has been obtained;the coupling mechanism between the stress wave and electromagnetic wave is clarified also in this paper.Furthermore,for different crystal structures,if the form of the stress wave is given in advance,piezoelectric strain matrix determines the coupling behavior between stress field and electromagnetic field completely.The phenomena of light and acoustic and electromagnetic emission can be explained well during seism and rock facture according to the results of the paper.
Based on the constitutive equation of the piezoelectric body,the transmission effect of the stress wave in the rock quartz contained has been presented;the relation between intensity and frequency of the stress wave and the radiated electromagnetic wave has been obtained;the coupling mechanism between the stress wave and electromagnetic wave is clarified also in this paper.Furthermore,for different crystal structures,if the form of the stress wave is given in advance,piezoelectric strain matrix determines the coupling behavior between stress field and electromagnetic field completely.The phenomena of light and acoustic and electromagnetic emission can be explained well during seism and rock facture according to the results of the paper.
引文
[1]王礼立.应力波基础[M].北京:国防工业出版社,2005.
[2]周培基,霍普肯斯A.K.材料对强冲击载荷的动态响应[M].北京:科学出版社,1986.
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[4]王继军,赵国泽,詹艳.中国地震电磁现象的岩石实验研究[J].大地测量与地球动力学,2005,25(2):22-28.
[5]郝锦绮,钱书清,高金田,等.岩石破裂过程中的超低频电磁异常[J].地震学报,2003,25(1):102-111.
[6]朱元清,罗祥麟,郭自强,等.岩石破裂时电磁辐射的机理研究[J].地球物理学报,1991,34(5):594-601.
[7]郭自强,郭子棋,钱书清,等.岩石破裂中的电声效应[J].地球物理学报,1999,42(1):74-83.
[8]王炽仑,杨仲乐,陈以旭,等.岩石破裂时的电磁辐射[J].地球物理学报,1992,35(增刊):287-291.
[9]钱书清,任克新,吕智.伴随岩石破裂的VLF,MF,HF和VHF电磁辐射特性的实验研究[J].地震学报,1996,18(3):346-351.
[10]钱书清,郝锦绮,周建国,等.岩石受压破裂的UL F和L F电磁前兆信号[J].中国地震,2003,19(2):109-116.
[11]包德修,和仁道,马伟林,等.地震电磁信息的偶电体模型[J].中国地震,1991,7(4):83-86.
[12]郭自强,周大庄,施行觉,等.岩石破裂中的电子发射[J].地球物理学报,1988,31(5):566-571.
[13]郭自强,刘斌.岩石破裂电磁辐射的频率特性[J].地球物理学报,1995,38(2):221-226.
[14]刘煜洲,刘因,王寅生,等.岩石破裂时电磁辐射的影响因素和机理[J].地震学报,1997,19(4):418-425.
[15]曹惠馨,钱书清,吕智.岩石破裂过程中超长波段的电、磁信号和声发射的实验研究[J].地震学报,1994,16(2):235-241.
[16]王恩元,何学秋.煤岩变形破裂电磁辐射的实验研究[J].地球物理学报,2000,43(1):131-137.
[17]B.A.奥尔特著.固体中的声场和波[M].孙承平,译.北京:科学出版社,1982.
[18]孙其政.电磁学分析预报方法[M].北京:地震出版社,1998.
[19]李夕兵,古德生.岩石冲击动力学[M].长沙:中南工业大学出版社,1994.
[2]周培基,霍普肯斯A.K.材料对强冲击载荷的动态响应[M].北京:科学出版社,1986.
[3]FOURNEY WL,BARKER D B,HOLLOWAY D C.Model studies of explosive well sti mulation technique[J].Int.J.Rock Mech.Min.Sci&Geomech.Abstr.,1981,18(2):113-127
[4]王继军,赵国泽,詹艳.中国地震电磁现象的岩石实验研究[J].大地测量与地球动力学,2005,25(2):22-28.
[5]郝锦绮,钱书清,高金田,等.岩石破裂过程中的超低频电磁异常[J].地震学报,2003,25(1):102-111.
[6]朱元清,罗祥麟,郭自强,等.岩石破裂时电磁辐射的机理研究[J].地球物理学报,1991,34(5):594-601.
[7]郭自强,郭子棋,钱书清,等.岩石破裂中的电声效应[J].地球物理学报,1999,42(1):74-83.
[8]王炽仑,杨仲乐,陈以旭,等.岩石破裂时的电磁辐射[J].地球物理学报,1992,35(增刊):287-291.
[9]钱书清,任克新,吕智.伴随岩石破裂的VLF,MF,HF和VHF电磁辐射特性的实验研究[J].地震学报,1996,18(3):346-351.
[10]钱书清,郝锦绮,周建国,等.岩石受压破裂的UL F和L F电磁前兆信号[J].中国地震,2003,19(2):109-116.
[11]包德修,和仁道,马伟林,等.地震电磁信息的偶电体模型[J].中国地震,1991,7(4):83-86.
[12]郭自强,周大庄,施行觉,等.岩石破裂中的电子发射[J].地球物理学报,1988,31(5):566-571.
[13]郭自强,刘斌.岩石破裂电磁辐射的频率特性[J].地球物理学报,1995,38(2):221-226.
[14]刘煜洲,刘因,王寅生,等.岩石破裂时电磁辐射的影响因素和机理[J].地震学报,1997,19(4):418-425.
[15]曹惠馨,钱书清,吕智.岩石破裂过程中超长波段的电、磁信号和声发射的实验研究[J].地震学报,1994,16(2):235-241.
[16]王恩元,何学秋.煤岩变形破裂电磁辐射的实验研究[J].地球物理学报,2000,43(1):131-137.
[17]B.A.奥尔特著.固体中的声场和波[M].孙承平,译.北京:科学出版社,1982.
[18]孙其政.电磁学分析预报方法[M].北京:地震出版社,1998.
[19]李夕兵,古德生.岩石冲击动力学[M].长沙:中南工业大学出版社,1994.
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