Data Processing Theory and Method of Hot Spot Deformation Monitoring Network for Northeast Surveying and Mapping Quarterly, Volume One, Issue No. 1 Wang Jingyang Zhao Changsheng Lin Shengxiang, Qiqihar Survey and Mapping Research Institute, Heilongjiang Qiqihar Liaoning University of Engineering and Technology The efficiency of field observation, and the three-dimensional baseline vector on the observed value, the adjustment result is the three-dimensional coordinate of the geocentric coordinate system.
Through the dynamic adjustment of multiple repeated observation data, the three-dimensional movement and three-dimensional rate of each monitoring station can be obtained, and the acceleration rate can be obtained.
This paper studies the staged dynamic adjustment method of 3D monitoring network, the selection of adjustment benchmark and the use of adjustment results.
Key words: Supervision network deformation analysis, dynamic adjustment, CLC number, document identification code, article number, one percussion river, one, two, Deng Fei, one eye, Diao Feisi, one eye rotation Set the horizontal deformation and ground settlement separately.
Limited by various factors, a high-precision three-dimensional monitoring network cannot be established.
Considering the visibility conditions of the mining area, the monitoring network is generally arranged on the main section of the deformation zone's direction and tendency.
Due to error propagation factors, the monitoring network cannot be deployed in a large area.
This makes it difficult to find a stable benchmark during deformation analysis and affects the quality of deformation analysis.
With its advantages of fast speed, high precision, all-weather, no limitation of visibility, and no limitation of side length, the technology has been widely used to establish a surface deformation monitoring network to directly measure the three-dimensional deformation of the deformation area. Relatively stable area outside the mining area, establish a reliable stability analysis stability benchmark.
The adjustment calculation and deformation analysis of the observation results of the monitoring network are generally based on the three-dimensional coordinate difference of the baseline vector.
As the observation value, the monitoring points arranged in the relatively stable area are used to determine the position reference, scale reference and azimuth reference of the deformation monitoring network.
In the three-dimensional coordinate system, there must be three components of the position reference, a scale reference and three components of the bearing reference.
If the deformation speed is considered, the three components of the speed reference should also be added.
Because the scale and method of baseline vector observations are affected by errors such as satellite ephemeris, ionospheric refraction, etc., there may be systematic scale differences and azimuth differences between observations at different periods. Pay attention to this.
This paper studies the conversion and application of the method for selecting the reference data of the dynamic adjustment model of the three-dimensional monitoring network and deformation analysis.
The dynamic adjustment model of the monitoring network is provided with a monitoring network. In order to obtain the three-dimensional deformation law, the monitoring network must be repeatedly observed in multiple stages.
After repeated observations during the menstrual period, there is a baseline vector observation value matrix to play in the first period, and the three-dimensional rectangular coordinate difference observation value of the baseline vector between the two points.
Guizhou, Potassium, Dingyin, with the three-dimensional coordinates of the point as an unknown number, with the change rate of the three-dimensional coordinates of the point as an additional parameter, and set the seventeen corpses of Liu Xizhou and Yin Huzhou in the state of Gexi, Chanzhou, Zhou, Diao It is the central time coordinate, the centralization time, and the double shaking heart is the correction number of the unknown parameter, which is the time difference between the observation time and the centralization time.
Considering that each period of observation has its own scale and azimuth difference, in order to eliminate the impact of this systematic difference, scale parameters and three method parameters are set in the network adjustment of each period, and each is set to 20 yuan. When sleeping, there is an observation equation for Na and Fu.
On the side of the Deng convex Yilu Zhuzhou Zhi Qifang Bi Xizheng received date 1 Northeast Surveying and Mapping Quarterly Vol. Year No. 1 Current issues Hot spot mask Comprehensive consideration of the coordinate change rate parameter Daheng, Heng, scale parameter and orientation parameter The azimuth parameter is a tiny quantity to replace two.
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Instead of substituting its square term, the error equation of the three-dimensional dynamic adjustment is that the four teams and the four teams are older than the four kisses.
The transformation and deformation analysis and monitoring network of Yiyiren's adjustment results belong to the geocentric coordinate system and the actual application of the plane and elevation coordinate systems.
The coordinate system is a standard system. In order to avoid the influence of the error of the elevation abnormal value when the coordinate system is converted, the deformation analysis mainly determines the relative change rate of the elevation (sink value and length relative change rate (the deformation value is therefore feasible using the inherent coordinate system .
The adjustment result conversion steps are: ①Calculate the geodetic coordinates from the three-dimensional space coordinate () ②Calculate the geodetic coordinate change rate from the three-dimensional space coordinate (Calculate the Gaussian plane coordinate) ③Calculate the geodetic coordinate change rate from the three-dimensional space ④Calculate the geodetic coordinate change rate Qi, B calculate the rate of change of the Gaussian plane coordinates, all ⑤ calculate the acceleration rate from the rate of change.
Deformation analysis includes the following: â‘ The maximum settlement value of the surface settlement value, the drawing of the subsidence contour map of the sinking basin â‘¡ Horizontal deformation, the rate of change along the main section and any other direction, the horizontal deformation value in any direction can be calculated, Draw horizontal deformation curve â‘¢ curvature calculation, curvature is the rate of change of horizontal deformation, calculate the curvature value according to the acceleration of the space point, and draw the contour map of curvature.
The significance test of the scale parameter and rotation parameter is based on the literature [magic, the composition test statistic is reduced. óK's first month of protection, ten innings (K are all Mao Yiyi Ge Yiya Ge Geji jZ Yi Duke can be treated: K Xiaoxia and Yi Peng.
Blade knife association mom Gan Qiuyi) Jian Pei Xi Sanyin Bin Zhouzhou people now Z convex Qian staring at Yin Yishu, Bi Luo Ding Ka will write the formula () into a matrix expression for Ge wear, all dreams, and among them, cited three major, , Heng ,,,,,,,,,,,,,,,,,,,,,,, of, Based on the specific problem, the location reference, coordinate change rate reference, scale reference and method reference of the monitoring network should be selected.
Let the reference equation corresponding to the selected datum be the covariance matrix of the observations of the baseline vector of the G corpse in the second form of the hundred solvable corpus B, and the corpse of the roar corpse is one hundred and one, among which Ding Yigan Selection of poor reference The surface deformation monitoring of the mined-out area of ​​the mining area can find the control point of the stable area, so the fixed position reference and the fixed position change rate reference can be found, so the fixed area and fixed change rate reference should be used in the mine monitoring network.
A fixed point is generally set in the stable area (if the number is set, the spatial distance of the point is used as the scale reference, and the point coordinate is used as the position reference.
In this way, the center of gravity azimuth reference, the fixed position reference, the fixed scale reference and the fixed rate reference are taken.
As soon as one enters, one bites one, one states one, one states one.
A group of squirrel states presents the number of observations on one side and the parameters of the significance of the test. One is the rank of the coefficient matrix of the error equation, the rank of the additional matrix sG, and the second corpse v.
Assuming that the rejection field of the test game is Zhan Ruo, one, when the above formula holds, the conversion parameters are significant.
Conclusion The purpose of establishing a monitoring network is to analyze the surface settlement deformation above the goaf.
The surface deformation analysis must be performed under the same reference. The dynamic adjustment of the monitoring network must not only consider the position reference, but also pay attention to the change of the scale and azimuth reference, and also need to introduce the rate reference.
The three-dimensional deformation analysis of the monitoring network and the deformation stress analysis of the surface rock layer in the mining area need further discussion.
Jin Guoxiong, Liu Dajie and Shi Yimin are waiting.
Application and data processing of satellite positioning, Shanghai Tongji University Press, Tao Benzao.
Unified Method of Hypothesis Testing of Adjustment Model and Its Application [Journal of Surveying and Mapping, Zhao Zhao
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