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Displacement measuring method for the inner part of enclosing rock for tunnel inner face

A technology of displacement measurement and measurement method, applied in measurement devices, instruments, etc., can solve the problems of low success rate, large workload, low efficiency, etc., and achieve the effects of rich measurement data, high survival rate, and high measurement accuracy

Inactive Publication Date: 2017-04-26
SHIJIAZHUANG TIEDAO UNIV
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  • Abstract
  • Description
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Problems solved by technology

The invention can solve the technical problems of heavy workload, low efficiency, low success rate and easy hole jamming existing in the installation of traditional connecting rods.

Method used

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  • Displacement measuring method for the inner part of enclosing rock for tunnel inner face

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Embodiment Construction

[0026] The specific embodiments of the present invention will be further described in detail below.

[0027] as attached figure 1 As shown, a displacement measurement method inside the surrounding rock of the tunnel face, the measurement method uses a sliding micrometer to measure the longitudinal displacement inside the tunnel face and uses a sliding settlement instrument to measure the settlement inside the tunnel face, Including the following steps:

[0028] Step 1: Preparation outside the hole before measurement, including preparing the inclinometer tube, fixing the measuring ring on the inclinometer tube, fixing the sliding micrometer probe or the sliding settlement instrument probe inside the inclinometer tube, Fixed connections between inclinometer tubes, installation of inclinometer tube bottom covers and preparation of grouting tubes;

[0029] Step 2: Drill the measuring hole, and use the RPD-75SL-H2 multi-function drilling machine to drill the hole;

[0030] Step ...

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Abstract

The invention discloses a displacement measuring method for the inner part of enclosing rock for tunnel inner face, comprising the following steps: 1) making external preparations for front hole measurement including the preparing of tilting measurement pipes, the fastening of measurement rings to the tilting measurement pipes, the detachably fastening of sliding type micrometer probes or sliding type settling instrument probes inside the tilting measurement pipes, the fixed connecting among the tilting measurement pipes, the installing of the bottom covers of the tilting measurement pipes and the preparing of grouting pipes; 2) drilling measurement holes through the use of a RPD-75SL-H2 multi-function drilling machine; 3) installing the tilting measurement pipes into the drilled holes wherein the diameters of the tilting measurement pipes are smaller than the diameters of the drilled holes; 4) injecting cement mortar into the silts among the tilting measurement pipes and the measurement holes so that the measurement rings are integrated with the ground layer as one; and 5) applying the sliding type micrometers to conduct the measurement on the internal longitudinal displacement at the inner part of the tunnel face; and applying the sliding type settling instrument to measure the settlement at the inner part of the tunnel face.

Description

technical field [0001] The invention belongs to the technical field of tunnel surrounding rock measurement, and in particular relates to a method for measuring the displacement inside the tunnel face surrounding rock. Background technique [0002] At present, the commonly used methods for measuring the internal displacement of surrounding rock in tunnel engineering include: multi-point displacement meter measurement method and total station electronic speed measurement method. The method of using multi-point displacement meters to measure the internal displacement of the surrounding rock is characterized by the flexible measurement of displacement values ​​at multiple points in the surrounding rock; the disadvantage is that the survival rate of the measuring points is low and is greatly affected by the tunnel excavation construction. The advantage of measuring the internal displacement of the surrounding rock with a total station electronic speed measuring instrument is that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02
CPCG01B21/02
Inventor 朱永全孙明磊高新强刘志春李新志高焱
Owner SHIJIAZHUANG TIEDAO UNIV
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