A horizontal and vertical deformation combined testing method for deep-layer rock bodies or soil bodies

A technology of joint testing and vertical deformation, applied in soil material testing, height/level measurement, measuring device, etc., can solve the problems of not being able to bury the design depth, affecting the measurement accuracy, affecting the construction safety, etc., to achieve good airtightness, guarantee Measurement accuracy and the effect of saving consumables

Active Publication Date: 2017-07-04
CENT SOUTH UNIV
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Problems solved by technology

The existing magnetic ring for measuring the vertical settlement of deep rock and soil uses an independent positioning ring to restrain its upward sliding, but it is easy to make it slide when the borehole is backfilled, and cannot be buried at the design depth
The existing borehole backfill method is to backfill the hole with coarse sand after the measuring pipe is installed. This method is difficult to accurately reflect the real deformation of the rock and soil, and the airtightness is very poor, which affects the construction safety and also affects measurement accuracy

Method used

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  • A horizontal and vertical deformation combined testing method for deep-layer rock bodies or soil bodies
  • A horizontal and vertical deformation combined testing method for deep-layer rock bodies or soil bodies
  • A horizontal and vertical deformation combined testing method for deep-layer rock bodies or soil bodies

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with accompanying drawing.

[0026] Such as figure 1 and figure 2 As shown, the present invention relates to a method for joint testing of horizontal and vertical deformation of deep rock mass or soil, including drilling of test holes, installation of joint testing device for horizontal and vertical displacement of deep rock mass or soil mass, backfilling and protection of test holes and instrument measurements. First, use a drilling machine to drill a joint test borehole 1 with a diameter of 108mm at a certain depth on the design measuring point, and collect the drilled core or soil core to test its compressive modulus; then install the deep rock mass or soil level And the vertical displacement joint test device, the installation step comprises the installation of the joint test tube bottom cover 2 of the joint test tube 3 that the first PVC pipe is made, and the pipe end of the grouting hose 6 and...

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Abstract

A horizontal and vertical deformation combined testing method for deep-layer rock bodies or soil bodies is disclosed. The method includes drilling a testing hole, mounting a horizontal and vertical displacement combined testing device for the deep-layer rock bodies or soil bodies, backfilling and protecting the testing hole, and performing measurement with instruments. The combined testing hole is utilized in the method, and therefore half of the testing cost is saved, and a horizontal and vertical three-dimensional deformation at a point of a rock body or a soil body can be obtained. In addition, a novel vertical settlement magnetic ring device and a backfilling method can greatly increase the testing precision. The method can meet safety monitoring projects requiring high precision, such as deformation monitoring of tunnels, high slopes, deep foundation pits and dam bodies.

Description

technical field [0001] The invention relates to a rock or soil deformation testing method, in particular to a deep rock or soil combined horizontal and vertical deformation testing method. Background technique [0002] With the development of my country's economy and society, the country vigorously develops infrastructure construction, and more and more pursues the safety of engineering project construction. The construction safety monitoring and life-span monitoring of projects are especially valued. For example, the deformation monitoring of projects such as tunnels, high slopes, deep foundation pits and dams plays a great early warning role in construction and use safety. For the deformation monitoring of deep rock and soil around the project, we pursue high frequency and high precision. [0003] Existing monitoring of horizontal and vertical settlement displacements of deep rock and soil mass usually arranges measuring holes separately, which consumes a lot of materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C5/00G01B21/32G01N33/24
CPCG01B21/32G01C5/00G01N33/24
Inventor 周中张齐芳张斌然邢凯缪林武张磊
Owner CENT SOUTH UNIV
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