| 改进的确定折射面法线深度的t0法 |
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| 引用本文： | 李启成,郭雷,何书耕,闵也.改进的确定折射面法线深度的t0法[J].吉林大学学报(地球科学版),2020,50(3):905-910. |
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| 作者姓名： | 李启成 郭雷 何书耕 闵也 |
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| 作者单位： | 辽宁工程技术大学矿业学院, 辽宁 阜新 123000 |
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| 基金项目： | 辽宁省重点研发计划指导计划（2019000901）；辽宁省教育厅项目（551610001219）；国家自然科学基金项目（41674055） |
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| 摘 要： | 本文基于对目前确定折射面法线深度t0方法的分析，发现存在如下问题：首先，目前方法求解时采用初等数学的方法，引进过程函数，计算过程繁杂；其次，求解时有两次近似操作，使结果误差增大；最后，在对法线深度曲线进行平滑时，采用手工偏移处理不仅费时费力，而且会造成人工误差。故提出一种改进的确定折射面法线深度的方法。改进方法优点：采用高等数学方法，不存在目前方法中的过程函数，计算更简洁；消除了近似问题，减小了计算误差，计算结果更精确；改进方法用相邻平均法对法线深度曲线进行平滑处理，提高了工作效率，节省了人力成本，实现了全过程计算机处理。目前方法和改进方法对同一野外的勘探结果表明，改进方法的勘探结果更符合真实折射波法线深度的变化，而且还可精确求出折射面倾角。
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| 关 键 词： | 折射波法 t0差数时距曲线法 法线深度 |
| 收稿时间： | 2019-03-23 |
An Improved t0 Method for Determining Normal Depth of Refractive Surface |
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| Li Qicheng,Guo Lei,He Shugeng,Min Ye.An Improved t0 Method for Determining Normal Depth of Refractive Surface[J].Journal of Jilin Unviersity:Earth Science Edition,2020,50(3):905-910. |
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| Authors: | Li Qicheng Guo Lei He Shugeng Min Ye |
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| Institution: | Mining College, Liaoning Technical University, Fuxin 123000, Liaoning, China |
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| Abstract: | The existing t0 method to determine the normal depth of refractive surface has the following problems:firstly, the calculation process is complicated by using the idea of elementary mathematics and introducing the process function into the calculation process; secondly, there are two approximations in the solution, which increases the error of results; finally, when the normal depth curve is smoothed by using the existing method, the manual offset processing is not only time-consuming and laborious, but also causes manual errors. An improved method to determine the normal depth of refractive surface is therefore proposed. This method adopts advanced mathematics without process function, which makes the calculation more accurate through eliminating the approximation problem and reducing the calculation error; and the method smooths the normal depth curve by using the adjacent average method, which improves work efficiency, cuts labor cost, and realizes the whole process of computer processing. In comparison with the results by the existing one, the results by the improved method are more in accord with the changes of true refracted wave depth, therefore it can accurately determine the refractue surface tilt angle. |
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| Keywords: | refraction wave method t0 difference time interval curve method normal depth |
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