| 地质剖面测制新方法的尝试——点坐标法 |
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| 引用本文： | 王冉,马立成,孙勇,张胜龙,贾志明.地质剖面测制新方法的尝试——点坐标法[J].地质力学学报,2017,23(6):856-863. |
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| 作者姓名： | 王冉 马立成 孙勇 张胜龙 贾志明 |
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| 作者单位： | 长安大学地球科学与资源学院, 陕西 西安 710054;国土资源部岩浆作用成矿与找矿重点实验室, 陕西 西安 710054,中国地质科学院页岩油气调查评价重点实验室, 北京 100081,长安大学地球科学与资源学院, 陕西 西安 710054,长安大学地球科学与资源学院, 陕西 西安 710054,中国地质科学院页岩油气调查评价重点实验室, 北京 100081 |
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| 基金项目： | 国家自然科学基金项目（41402044）；中国博士后基金特别项目（2013T60869）；地质大调查项目（DD20160173） |
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| 摘 要： | 在区域地质调查中,地质剖面测制是一项必要的工作,而传统的导线法限制因素较多,质量和效率有待提高。在导线法的基础上,基于野外实践经验,提出了一种地质剖面测制新方法,即点坐标法。该方法的要点有:利用GPS获得地形控制点,以及分层、采样、产状、照相等位置的三维点坐标;构建一套函数公式,根据各点的三维空间坐标值,可计算获得点间平距、高差、方位角、坡度角等参数,从而投影绘制地质剖面图。该方法的主要优点有:不再需要测绳,可从人工测量记录转变为自动测量记录,实现了测量数据的数字化;避免了导线终点与实际终点不重合的情况;每一个分层点都有GPS坐标,便于野外复查。结合点坐标法测制地质剖面的实例证明,点坐标法较之导线法有多快好省的优点,值得在实际应用中广泛使用。
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| 关 键 词： | 横剖面 导线法 点坐标法 地质填图 |
| 收稿时间： | 2016/12/12 0:00:00 |
A NEW GEOLOGICAL SECTION MEASURING AND MAPPING METHOD:POINT COORDINATES METHOD |
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| WANG Ran,MA Licheng,SUN Yong,ZHANG Shenglong and JIA Zhiming.A NEW GEOLOGICAL SECTION MEASURING AND MAPPING METHOD:POINT COORDINATES METHOD[J].Journal of Geomechanics,2017,23(6):856-863. |
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| Authors: | WANG Ran MA Licheng SUN Yong ZHANG Shenglong and JIA Zhiming |
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| Institution: | Earth Science & Resources College of Chang''an University, Xi''an 710054, Shannxi, China;Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits, MLR, Xi''an 710054, Shannxi, China,Key Lab of Shale Oil and Gas Geological Survey, Chinese Academy of Geological Sciences, Beijing 100081, China,Earth Science & Resources College of Chang''an University, Xi''an 710054, Shannxi, China,Earth Science & Resources College of Chang''an University, Xi''an 710054, Shannxi, China and Key Lab of Shale Oil and Gas Geological Survey, Chinese Academy of Geological Sciences, Beijing 100081, China |
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| Abstract: | Geological section measuring and mapping is a necessary task for regional geological survey; however, the traditional geological section measurement, which is based on tapeline together with compass, has many limitations such as visual conditions, tapeline bending, manual measurement error and second projection defects. In order to improve the quality and efficiency of geological section measurement, on the basis of the previous methods, through the practice of a number of different types of geological survey projects, a new geological section measuring and mapping method using point coordinates is presented in this paper. The key points of the method include (1) Using GPS to obtain terrain control points, as well as three-dimensional coordinates in stratification, sampling, production, occurrence and other positions. (2) A series of formulas are developed, based on which parameters like horizontal distance between points, altitude difference, azimuth angle and slope angle can be calculated according to three-dimensional space coordinates of each point in order to do the mapping. The point coordinates method has two main advantages:(1) Digitization of measurement data is realized by the change from manual measurement to automatic measurement, and there is no need for tape line. (2) The facts that the end point of the tapeline does not coincide with the actual end point can be avoided. (3) It is convenient for field review because each layering point has a GPS coordinate.The case and practice have proved that the point coordinates method is superior to the tapeline method. It is worthy of being widely used in practical application. |
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| Keywords: | cross section tapeline method point coordinates method geological mapping |
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