Mounting, burying and grouting method for multi-point displacement meter

A technology of displacement meter and grouting, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc. It can solve the problem of insufficient grouting and achieve the effect of improving accuracy

Active Publication Date: 2013-09-11
SINOHYDRO BUREAU 14 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to effectively solve the problem of insufficient grouting of multi-point displacement gauges under different rock formation conditions, and provide a method...

Method used

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  • Mounting, burying and grouting method for multi-point displacement meter
  • Mounting, burying and grouting method for multi-point displacement meter
  • Mounting, burying and grouting method for multi-point displacement meter

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Embodiment Construction

[0012] During the specific construction, use a PVC pipe with suitable hardness, cut off the appropriate length, bind it with the displacement meter according to the corresponding position, and send it into the installation hole synchronously. Mark the three pipes outside the orifice respectively, fill the gaps in the orifice with geotextile and cement slurry, and then seal the orifice with cement mortar. Grouting can be done after the hole sand has solidified. For rock formations such as gneiss with large cracks and large groundwater, the first grouting pipe can be used to perform primary grouting with a large water-cement ratio (up to 1:5, ash refers to cement). pulp plug.

[0013] Try to use the first grouting pipe when grouting. When grouting to the second grouting pipe, you can block the second grouting pipe first, and then continue to use the first grouting pipe to grout to the exhaust pipe For grouting, the water-cement ratio is 1:5 when grouting the first grouting pip...

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Abstract

The invention discloses a mounting, burying and grouting method for a multi-point displacement meter. According to the mounting, burying and grouting method, holes are drilled in rock stratums of different conditions, and the displacement meter is mounted at multiple points. The mounting, burying and grouting method comprises the steps of rock stratum displacement monitoring in the horizontal direction, in the vertical direction, in the slanted upward direction and in the slanted downward direction. A double grouting method is adopted in the displacement meter, namely, the displacement meter is provided with a vent pipe, a far-end anchor head, a near-end anchor head and double grouting pipes. The mounting, burying and grouting method for the multi-point displacement meter can be applied to displacement safety monitoring in building projects and construction such as water conservancy and hydropower projects, highways and railways, the problem that the grouting of the multi-point displacement meter is insufficient under different rock stratum conditions is solved, the rock mass deformation of the measured part can be reflected truly by the displacement meter, and reliable monitoring data are supplied to the buildings.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering safety monitoring, and in particular relates to a multi-point displacement meter installation and burial grouting method used in the construction of water conservancy and hydropower, highways, railways and other civil engineering projects. Background technique [0002] The multi-point displacement meter is an instrument used in water conservancy and hydropower, highway, railway construction and other civil engineering projects to monitor the displacement of slopes and underground caverns. It is used as a transmission rod for buried installation and grouting process. The traditional grouting process uses Single grouting pipe, orifice or bottom grouting, small diameter exhaust pipe. In practical applications, it is found that most of the values ​​measured at the remote measuring points do not match the actual displacement. According to years of practical application and data analy...

Claims

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Application Information

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IPC IPC(8): E02D1/00
Inventor 陶成华游敏姜则龙王江卫
Owner SINOHYDRO BUREAU 14 CO LTD
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