New Basis Points of Geodetic Stations for Landslide Monitoring
Journal Title: Mechanics, Materials Science & Engineering Journal - Year 2017, Vol 8, Issue 1
Abstract
The results of mathematical processing of modern geodetic observations of landslide processes in Dnipropetrovsk on points of observation stations in case of lost basis points are presented. Previous observations were conducted in 1993 using classic geodetic instruments. To provide the required accuracy of observations the local geodetic coordinate system was developed. There were two basis points; using laser range equipment the distance between them was measured with accuracy higher than 0.001 m. New observations were conducted in 2015 using GNSS-technologies and satellite observations in static mode because the traditional methods were impossible to use as the mutual visibility between basis points was lost. The biggest problem in current monitoring was the loss of basis points of monitoring stations. Some suggestions as for choosing the most stable points of network were made. Such points were defined according to previous observations; and the new method of determining the “temporary” basis points by comparing the lengths of lines between points of observation is offered. There were chosen three most stable points with minimal length disparity. Using such method we have transformed satellite observations from WGS-84 to local coordinate system established at the territory of landslide. Such method could be used in case of lost basis points and with considerable number of rather stable observation points. At the same time, we suggest setting the basis points as far from the landslide observation stations as possible. For further observations, we suggest using GNSS-technologies in static mode and setting the new basis points. To improve the accuracy, the observations on basis points will be combined with GNSS and other ground observations.
Authors and Affiliations
V. Riabchii, M. Tregub, О. Yankin
New Basis Points of Geodetic Stations for Landslide Monitoring
The results of mathematical processing of modern geodetic observations of landslide processes in Dnipropetrovsk on points of observation stations in case of lost basis points are presented. Previous observations were con...
Multi-Response Optimization and Regression Analysis of Process Parameters for Wire-EDMed HCHCr Steel Using Taguchi’s Technique
In this study, effect of machining process parameters viz. pulse-on time, pulse-off time, current and servo-voltage for machining High Carbon High Chromium Steel (HCHCr) using copper electrode in wire EDM was investigate...
Formation of Physical and Mechanical Properties of Surface Layer of Machine Parts
The aim of the paper is to solve scientific and practical problem that is to explore the impact of operations of machining surfaces of parts of the “body rotation” type on the formation of the physical and mechanical pro...
Identities of Vector Algebra as Associative Properties of Multiplicative Compositions of Quaternion Matrices
This paper is dedicated to the further development of matrix calculation in the sphere of quaternionic matrices. Mathematical description of transfer (displacement) and turn (rotation) in space are fundamental for the me...
Numerical and Experimental Study of Energy Absorption in Aluminum Corrugated Core Sandwich Panels by Drop Hammer Test
This paper is aimed to study the behavior of sandwich panels made of Aluminum face sheet and Aluminum corrugated core under impact loading. Sandwich panels with square and triangular corrugated cores of two different hei...