Method for improving horizontal displacement test precision of deep soil body

Abstract

The invention discloses a method for improving the horizontal displacement test precision of a deep soil body. The method comprises the following steps of (1) arranging an inclinometer pipe in a deepsoil body to be tested, and enabling a gap to be formed between the inclinometer pipe and the deep soil body to be tested; (2) carrying out compaction grouting in the gap between the inclinometer pipeand the deep soil body to be tested, and ensuring that the gap is filled with a cement paste; (3) putting an inclinometer into the inclinometer pipe, and testing the horizontal displacement of the deep soil body to be tested. In the gap between the inclinometer pipe and a placing hole, the cement paste is extruded and filled by adopting the compaction grouting mode, the gap between the inclinometer pipe and the placing hole is completely filled after the cement paste is solidified, so that the measured data is ensured to reflect the actual horizontal displacement of the deep soil body, and the test precision is improved.

Description

technical field [0001] The invention relates to the technical field of soil monitoring, in particular to a method for improving the testing accuracy of horizontal displacement of deep soil. Background technique [0002] During the construction of the foundation pit project, it is necessary to monitor the internal force and deformation of the foundation pit enclosure structure, the deformation of the surrounding soil, and the deformation of various buildings (structures) and pipelines in the surrounding area, and feedback various monitoring data to the design team in time. And the construction unit, realize the information design and construction, so as to ensure the safety of the foundation pit enclosure itself and various surrounding buildings (structures) and pipelines. [0003] The horizontal displacement test of deep soil is one of the main monitoring contents. The existing method for testing the horizontal displacement of deep soil is to pre-set the inclinometer tube a...

AI Technical Summary

Problems solved by technology

If the gap between the inclinometer tube and the deep soil cannot be filled, when the soil moves toward the foundation pit, the gap must be filled with soil to cause lateral deformation of the inclinometer tube, and the gap filled with soil should be compacted The lateral displacement of this part of the process is not measured, so the measured value cannot reflect the real deep horizontal displacement of the soil, and the result is too small

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