A stratum displacement measurement device and measurement method combining apparent and internal measurements
A technology that combines table and displacement, applied in measurement devices, mapping and navigation, height/level measurement, etc., can solve the problems of soil influence error, cost and difficulty
Active Publication Date: 2018-05-01
DALIAN JIAOTONG UNIVERSITY
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Problems solved by technology
At present, the measurement of stratum displacement in laboratory tests mostly uses instruments for indirect measurement, and the impact of embedded related instruments on the soil will inevitably lead to certain errors, while X-rays and nuclear magnetic resonance can directly observe stratum displacement. technology, which is not widely used because of the expensive instrument cost and difficult technique required
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[0034] The features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments: Figure 1-2 As shown, a stratum displacement measurement device combining apparent and internal measurements, including a test box 1, a colored soil body 6, a measurement system and a tunnel excavation simulation device;
[0035] The test box 1 is a visible toughened glass box, the glass box has a bottom and is open, and holes are prefabricated on the opposite two wall surfaces, and a "concave" shaped stainless steel chute is set outside the periphery of the hole on the outside of the wall surface for installing glass. Baffle; the four walls of the test chamber 1 have dimension lines 2 with precise scales;
[0036] The colored soil body 6 is housed in the described test box, and the surface layer of the colored soil body 6 is lower than the opening face of the test box;
[0037] The colored soil 6 is layered and filled in the test bo...
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The invention discloses a stratum displacement measurement device and method combining the appearance with internal measurement. The device comprises a test box, colored soil, a measurement system and a tunnel excavation simulating device. The test box is a visual tempered glass box, and the colored soil is contained in the test box. The tunnel excavation simulating device comprises a drawing instrument, an inner pipe and an outer pipe. The measurement system comprises a sedimentation assembly, a displacement sensor, a data acquisition instrument and a computer. According to the stratum displacement measurement device and method, soil displacement is released to generate stratum losses for tunnel excavation simulation, and direct monitoring on stratum displacement at different deep burying positions is achieved by arranging a colored soil layer in the tempered glass box. Due to the fact that the stratum displacement in the test box is measured, the relationship between the displacement of all measuring points and footage in the drawing process of the outer pipe is obtained, then the function relationship between the displacement of all the measurement points and the position of the left end of the outer pipe is determined, and possible follow-up development of the displacement of the colored soil layer on the edge of the box can be predicted preliminarily through the function relationship.
Description
technical field [0001] The invention relates to the field of geotechnical tests for test teaching and scientific research in colleges and universities, in particular to a stratum displacement measuring device and a measuring method. Background technique [0002] During the tunnel excavation construction, the soil above the tunnel is affected by the excavation disturbance, resulting in a certain settlement displacement, which brings certain damage to the surface and underground structures and affects their normal use. In order to determine the settlement law of displacement, the indoor test is very important. At present, the measurement of stratum displacement in laboratory tests mostly uses instruments for indirect measurement, and the impact of embedded related instruments on the soil will inevitably bring certain errors, while X-rays and nuclear magnetic resonance can directly observe stratum displacement. Technology, because of the expensive instrument cost and difficult...
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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 王海涛金慧张景元闫帅何永安志强
Owner DALIAN JIAOTONG UNIVERSITY