Method for calculating displacement of wall rock
A technology of displacement calculation and calculation method, which is applied to instruments, measuring devices, and optical devices, etc., can solve the problems of delay in modification and adjustment of design scheme and construction organization, information cannot be integrated in time, hidden dangers of engineering safety, etc., so as to avoid the position of measuring point. The influence of displacement calculation results, the effect of fast observation speed and accurate calculation
Inactive Publication Date: 2011-07-27
WUHAN UNIV
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Problems solved by technology
At present, in engineering, these two kinds of displacements are observed separately, even two groups of observers conduct them at different times, and the information cannot be integrated in time; and most of them are in the state of manual measurement and manual reading, which is laborious and time-consuming. The reverse analysis of the surrounding rock parameters and the adjustment of the dynamic construction plan are very unfavorable, often causing delays in the modification and adjustment of the design plan and construction organization, which may easily cause engineering safety hazards or waste, and affect the construction progress
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[0028] Below in conjunction with accompanying drawing, the present invention is described in further detail:
[0029] The real-time observation device for the displacement of surrounding rock in underground engineering using the calculation method of the present invention includes a bracket 11 with a rotating shaft 5, a positioning plate 8 is fixedly installed on the rotating shaft 5, and the surface is tangentially gradient gray with the rotating shaft as the center. 3. It is sleeved on the rotating shaft 5, and its inner circumference has a flange 12, which can be rotated around the rotating shaft. The displacement turntable is evenly and symmetrically distributed with three windows 4 with the rotating shaft as the center; 6 bypass the flange 12 on the displacement turntable 3 and connect with the weight 9, the movement of the steel wire 6 can drive the displacement turntable 3 to rotate without sliding; the end face of the rotating shaft 5 is equipped with a reflective film ...
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The invention belongs to the field of engineering measurement and discloses a method for calculating the displacement of wall rocks. The method comprises the steps of deleting laser imaging points reflected by light reflecting membranes at the central regions of CCD grating images of a total station; equalizing a plurality of brightness peak values on the brightness-level coordinate axis of the brightness-level statistical distribution chart; calculating the rotating angle Delta Theta of a displacement turnplate according to the brightness-level difference Delta G in a laser brightness distribution mode; further calculating the relative displacement of a rotating shaft and an anchoring head; reading the distance measuring result and the VH angle value of the total station on the light reflecting membrane; and calculating the spatial position of the rotating shaft and the anchoring head according to the spatial position of the total station. The method can be used for calculating exactly, the influence of the air dust attenuation on the laser strength of the total station can be eliminated, the influence of different laser strengths due to the observation angle on calculation results of measuring point position displacement can be avoided, and the stability is good.
Description
technical field [0001] The invention relates to a method for calculating the displacement of surrounding rock in an underground project, and belongs to the field of engineering measurement. Background technique [0002] Surrounding rock deformation monitoring is an important basis for dynamically adjusting construction plans and determining support timing and parameters in underground engineering construction. The deformation monitoring of surrounding rock in underground engineering includes surface and internal displacement monitoring. The measurement of the internal displacement of the surrounding rock generally uses a multi-point displacement meter, while the surface displacement of the surrounding rock is generally observed by a convergence meter or a total station. In order to determine the physical and mechanical parameters of the surrounding rock and the stress field of the original rock, two kinds of displacement data must be obtained at the same time. Because the i...
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Inventor 张程远刘小燕刘泉声
Owner WUHAN UNIV