| 岩石电容——电介质电容之一 |
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| 引用本文： | 商木元.岩石电容——电介质电容之一[J].地质与资源,2020,29(1):76-84. |
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| 作者姓名： | 商木元 |
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| 作者单位： | 天津地质研究院, 天津 300061 |
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| 摘 要： | 岩石是电介质之一.发现了岩石具有电容性，就应该探讨电介质是否具有电容性.本文根据岩石充放电一次电压和二次电压得到的岩石电容性给出了电介质电性模型.依据介质为电容电阻串联的新的模型，利用跨学科的前人对黄铜矿、黄铁矿、玻璃、云母、琥珀以及聚乙烯胶囊的时间域和频率域实验数据进行验证，并进一步与介电常数经典理论对比验证.验证结果表明，新模型的电性参数关系与黄铜矿、黄铁矿、玻璃、云母、琥珀及聚乙烯胶囊实测电性参数关系非常吻合；新模型适用于各种时间的弛豫以及直流和交流环境；新模型也完全能表达各种介电常数和电损耗的关系.主要结论有，介质是漏电的含有内阻的电容；它可以看作若干含内阻电容和漏电电阻的并联电路；介质的阻抗及等效电容取决于介质的电容、电容内电阻、介质电阻及频率；岩石电容是电介质电容的一种.
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| 关 键 词： | 岩石电容 内阻 电介质 弛豫时间 吸收电流 |
| 收稿时间： | 2019-04-10 |
ROCK CAPACITANCE: ONE OF THE DIELECTRIC CAPACITANCE |
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| SHANG Mu-yuan.ROCK CAPACITANCE: ONE OF THE DIELECTRIC CAPACITANCE[J].Geology and Resources,2020,29(1):76-84. |
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| Authors: | SHANG Mu-yuan |
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| Institution: | Tianjin Institute of Geology, Tianjin 300061, China |
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| Abstract: | Rock is a kind of dielectric.Since the rock is found to be capacitive,it should be discussed about the capacitive characters of dielectric.The electrical model of dielectric is established based on the rock capacitance obtained by primary voltage and secondary voltage during charging and discharging.According to the new model with capacitor and resistor as the dielectric,verification is carried out using the time domain and frequency domain experimental data of chalcopyrite,pyrite,glass,mica,amber and polyethylene capsules by interdisciplinary predecessors.It is further verified by comparison with the classical theory of permittivity.The results show that the electrical parameters of the new model are perfectly consistent with those of chalcopyrite,pyrite,glass,mica,amber and polyethylene capsules.The new model is suitable for all kinds of relaxation time,direct current and alternating current environments,and can also fully express the relations between various permittivity and electrical loss.The main conclusions are as follows:Dielectric is a leaky internal resistance-containing capacitor;It can be regarded as a number of parallel circuits containing internal resistance capacitor and leakage resistor;The impedance and equivalent capacitance of dielectric depend on the capacitance,internal resistance,dielectric resistance and frequency;Rock capacitance is one of the dielectric capacitance. |
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| Keywords: | rock capacitance internal resistance dielectric relaxation time absorption current |
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