CN109637324B - A method for restoration of original laminae occurrence - Google Patents
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Abstract
本发明公开了一种原始纹层产状恢复的方法，包括以下步骤：分别测量岩层产状和现今纹层产状的倾角和倾向；建立一个笛卡尔坐标系，并将岩层产状和现今纹层产状的倾角和倾向在笛卡尔坐标系中分别通过线段表示出来，得到岩层线段、纹层线段；在再笛卡尔坐标系上连接岩层线段、纹层线段的端点，得到原始线段；最后根据步骤3得到的平行原始线段得到原始纹层产状。本发明利用高中的矢量合成原理，使用三角形法则对原始纹层产状进行恢复，原理简单；并且准确度高。
The invention discloses a method for restoring the occurrence of original laminae, comprising the following steps: respectively measuring the inclination and inclination of the occurrence of rock layers and the occurrence of current laminae; establishing a Cartesian coordinate system, The dip angle and inclination of the stratum occurrence are represented by line segments in the Cartesian coordinate system, respectively, to obtain the stratum line segment and the lamina line segment; in the Cartesian coordinate system, connect the end points of the stratum line segment and the lamina line segment to obtain the original line segment; The parallel original line segment obtained in step 3 obtains the original laminar occurrence. The invention utilizes the vector synthesis principle of high school and uses the triangle rule to restore the original laminar occurrence state, the principle is simple, and the accuracy is high.
Description
技术领域technical field
本发明涉及地质领域古水流研究纹层原始产状恢复，尤其是一种原始纹层产状恢复的方法。The invention relates to the restoration of the original occurrence state of laminae in paleocurrent research in the geological field, in particular to a method for restoring the occurrence state of the original laminae.
背景技术Background technique
在研究沉积岩古水流方向时常常用到地层中纹层产状的方法，但是，由于原始纹层在受到后期构造运动后，其产状已经发生了较大变化。因此，要通过纹层产状研究古水流就需要将现今测量出来的纹层产状进行恢复，以反映沉积时期测纹层产状。现有方法主要使用赤平投影原理，利用吴氏网进行手动绘制；但是赤平投影理论较为抽象，对于课堂教学，学生难以将赤平投影与纹层产生并发生改变的地质特征相联系；图解方法繁琐耗时，尤其是用手工绘制赤平投影图时，需借助吴氏网，其准确性差，对于古水流研究准确度不高。The method of occurrence of laminae in strata is often used to study the direction of paleocurrent in sedimentary rocks. However, the occurrence of the original laminae has undergone great changes after being subjected to later tectonic movements. Therefore, in order to study paleocurrent by the occurrence of lamina, it is necessary to restore the occurrence of lamina measured today to reflect the occurrence of measured lamina during the depositional period. Existing methods mainly use the principle of stereographic projection and use Wu's net for manual drawing; however, the theory of stereographic projection is relatively abstract, and for classroom teaching, it is difficult for students to associate stereographic projection with the geological features that produce and change laminae; the graphical method is cumbersome and time-consuming. In particular, when the stereographic projection map is drawn by hand, the Wu's net is needed, and its accuracy is poor, and the accuracy of ancient water flow research is not high.
发明内容SUMMARY OF THE INVENTION
本发明主要是克服现有技术中的不足之处，提出一种操作简单、准确度高的原始纹层产状恢复的方法。The invention mainly overcomes the deficiencies in the prior art, and proposes a method for restoring the original laminae occurrence with simple operation and high accuracy.
本发明解决上述技术问题所提供的技术方案是：一种原始纹层产状恢复的方法，包括以下步骤：The technical scheme provided by the present invention to solve the above-mentioned technical problems is: a method for restoring the occurrence of original laminae, comprising the following steps:
步骤1、分别测量岩层产状和现今纹层产状的倾角和倾向；Step 1. Measure the dip angle and inclination of rock formation occurrence and current laminar occurrence respectively;
步骤2、建立一个笛卡尔坐标系，并将岩层产状和现今纹层产状的倾角和倾向在笛卡尔坐标系中分别通过从原点出发的矢量表示出来，得到岩层矢量、纹层矢量，矢量的长度代表倾角，矢量的方位角代表倾向；Step 2. Establish a Cartesian coordinate system, and express the inclination angle and inclination of the occurrence of the rock formation and the current laminar occurrence in the Cartesian coordinate system respectively by vectors starting from the origin to obtain the formation vector, the lamination vector, the vector The length of the vector represents the inclination, and the azimuth of the vector represents the inclination;
步骤3、再在笛卡尔坐标系上连接岩层矢量、纹层矢量的端点，得到原始矢量，其方向是由岩层矢量的端点指向纹层矢量的端点；Step 3. Connect the end points of the rock formation vector and the lamination vector on the Cartesian coordinate system to obtain the original vector, whose direction is from the end point of the rock formation vector to the end point of the lamination vector;
步骤4、最后根据步骤3得到的平行原始矢量得到原始纹层产状。Step 4. Finally, the original laminar occurrence is obtained according to the parallel original vector obtained in step 3.
进一步的技术方案是，所述笛卡尔坐标系中的横坐标代表东西方向，纵坐标代表南北方向；坐标轴的长度代表倾角。A further technical solution is that the abscissa in the Cartesian coordinate system represents the east-west direction, the ordinate represents the north-south direction; the length of the coordinate axis represents the inclination angle.
进一步的技术方案是，所述步骤2中矢量的长度代表倾角，矢量的方位角代表倾向。A further technical solution is that in the step 2, the length of the vector represents the inclination angle, and the azimuth angle of the vector represents the inclination.
进一步的技术方案是，所述步骤4的具体过程为：以原始矢量、岩层矢量为两边，在笛卡尔坐标系上做平行四边形，得到平行原始矢量、平行岩层矢量，然后在笛卡尔坐标系上测量平行原始矢量的长度和方位角，最后得到原始纹层产状的倾角、倾向。A further technical solution is that the specific process of the step 4 is: take the original vector and the rock formation vector as two sides, make a parallelogram on the Cartesian coordinate system, obtain the parallel original vector, the parallel rock formation vector, and then on the Cartesian coordinate system. Measure the length and azimuth of the parallel original vector, and finally obtain the inclination and inclination of the original laminae occurrence.
本发明的有益效果：本发明利用高中的矢量合成原理，使用三角形法则对原始纹层产状进行恢复，原理简单；并且准确度高。Beneficial effects of the present invention: the present invention utilizes the vector synthesis principle of high school and uses the triangle rule to restore the original laminar occurrence, the principle is simple, and the accuracy is high.
附图说明Description of drawings
图1为本发明实施例1中的笛卡尔坐标系示意图；1 is a schematic diagram of a Cartesian coordinate system in Embodiment 1 of the present invention;
图2为本发明实施例1中岩层矢量示意图；2 is a schematic diagram of a rock formation vector in Embodiment 1 of the present invention;
图3为本发明实施例1中纹层矢量示意图；3 is a schematic diagram of a lamina vector in Embodiment 1 of the present invention;
图4为本发明实施例1中原始矢量示意图；4 is a schematic diagram of an original vector in Embodiment 1 of the present invention;
图5为本发明实施例1中平行原始矢量、平行岩层矢量示意图。FIG. 5 is a schematic diagram of the parallel original vector and the parallel rock formation vector in Embodiment 1 of the present invention.
具体实施方式Detailed ways
下面结合实施例和附图对本发明做更进一步的说明。The present invention will be further described below with reference to the embodiments and accompanying drawings.
实施例1Example 1
本发明的一种原始纹层产状恢复的方法，包括以下步骤：A method for restoring the occurrence of original laminae of the present invention comprises the following steps:
步骤1、分别测量岩层产状和现今纹层产状的倾向和倾角，分别得到岩层产状为295°、∠68°，现今纹层产状为305°、∠39°；Step 1. Measure the inclination and dip angle of the occurrence of the strata and the occurrence of the current laminae, respectively, and obtain the occurrence of the stratum to be 295° and ∠68° respectively, and the occurrence of the current laminae to be 305° and ∠39°;
步骤2、建立一个笛卡尔坐标系(如图1所示)，所述笛卡尔坐标系中的横坐标代表东西方向，纵坐标代表南北方向；坐标轴的长度代表倾角；Step 2, establish a Cartesian coordinate system (as shown in Figure 1), the abscissa in the Cartesian coordinate system represents the east-west direction, the ordinate represents the north-south direction; the length of the coordinate axis represents the inclination;
并将岩层产状和现今纹层产状的倾角和倾向在笛卡尔坐标系中分别通过矢量表示出来，得到岩层矢量(如图2所示)、纹层矢量(如图3所示)，其中矢量的长度代表倾角，矢量的方位角代表倾向；The dip angle and inclination of the occurrence of the rock formation and the occurrence of the current laminar are represented by vectors in the Cartesian coordinate system, respectively, and the formation vector (as shown in Figure 2) and the lamination vector (as shown in Figure 3) are obtained, where The length of the vector represents the inclination, and the azimuth of the vector represents the inclination;
步骤3、再在笛卡尔坐标系上连接岩层矢量、纹层矢量的端点，得到原始矢量(如图4所示)；Step 3. Connect the end points of the rock formation vector and the laminar vector on the Cartesian coordinate system to obtain the original vector (as shown in Figure 4);
步骤4、以原始矢量、岩层矢量为两边，在笛卡尔坐标系上做平行四边形，得到平行原始矢量、平行岩层矢量(如图5所示)，Step 4. Taking the original vector and the rock formation vector as two sides, make a parallelogram on the Cartesian coordinate system to obtain the parallel original vector and the parallel rock formation vector (as shown in Figure 5),
然后在笛卡尔坐标系上测量平行原始矢量的长度和方位角，最后得到原始纹层产状为102.09°、∠30.36°。Then measure the length and azimuth of the parallel original vector on the Cartesian coordinate system, and finally obtain the original laminar occurrence as 102.09°, ∠30.36°.
实施例2Example 2
分别测量岩层产状和现今纹层产状的倾向和倾角，分别得到岩层产状为 94°、∠53°，现今纹层产状为338°、∠53°，然后采用实施例1相同的步骤得到原 始纹层产状为327.11°、∠58.38°。The inclination and dip angle of rock formation occurrence and current laminar occurrence were measured respectively, and the rock formation occurrence was 94° and ∠53° respectively, and the current laminar occurrence was 338° and ∠53°, and then the same steps as in Example 1 were used. The original laminar occurrence is 327.11° and ∠58.38°.
实施例3Example 3
分别测量岩层产状和现今纹层产状的倾向和倾角，分别得到岩层产状为 351°、∠42°，现今纹层产状为15°、∠31°，然后采用实施例1相同的步骤得到原 始纹层产状为128.21°、∠18.62°。The inclination and dip angle of rock formation occurrence and current laminar occurrence were measured respectively, and the rock formation occurrence was 351° and ∠42° respectively, and the current laminar occurrence was 15° and ∠31°, and then the same steps as in Example 1 were used. The original laminar occurrence is 128.21° and ∠18.62°.
对比例Comparative ratio
然后根据上述实施例1-3中岩层产状和现今纹层产状数据，通过吴氏网进行恢复，得到的原始纹层产状；其结果如下表：Then according to the rock formation occurrence and current laminar occurrence data in the above-mentioned embodiment 1-3, restore through Wu's net to obtain the original laminar occurrence; the results are as follows:
对比上述数据可知相差较小，即可知本发明的准确度较高，且操作简单。Comparing the above data, it can be seen that the difference is small, that is, the present invention has high accuracy and simple operation.
以上所述，并非对本发明作任何形式上的限制，虽然本发明已通过上述实施例揭示，然而并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容作出些变动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。The above is not intended to limit the present invention in any form. Although the present invention has been disclosed through the above-mentioned embodiments, it is not intended to limit the present invention. Any person skilled in the art, within the scope of the technical solution of the present invention, When the technical contents disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, any simple modifications or equivalents to the above embodiments according to the technical essence of the present invention do not depart from the content of the technical solution of the present invention. Changes and modifications still fall within the scope of the technical solutions of the present invention.
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