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Embedding method of inclinometer casing in formation containing silty fine sand

A technology of inclinometer tube and silt fine sand, which is applied in the field of foundation soil survey, construction, infrastructure engineering, etc. It can solve the problem of hole collapse without considering the problem of inclinometer tube collapse, and achieve the effect of simple method and avoiding hole collapse

Inactive Publication Date: 2019-01-18
CHINA TIESIJU CIVIL ENG GRP CO LTD +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology focuses on describing the drainage and backfilling of the borehole when the inclinometer pipe is buried, and does not consider the hole collapse problem when the inclinometer pipe is installed in the deep and complex formation environment

Method used

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  • Embedding method of inclinometer casing in formation containing silty fine sand
  • Embedding method of inclinometer casing in formation containing silty fine sand
  • Embedding method of inclinometer casing in formation containing silty fine sand

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Embodiment Construction

[0031] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0032] see figure 2 .

[0033] The embedding method of the inclinometer pipe in the silt-fine sand stratum of the present invention comprises the following steps:

[0034] (1) One drilling

[0035] Drill out the pilot hole 11 on the formation containing silt and fine sand;

[0036] (2) Installation sleeve

[0037] Extend the casing 2 whose inner diameter is larger than the outer diameter of the inclinometer tube 3 into the guide hole 11;

[0038] (3) Secondary drilling

[0039] Drill out the installation hole of the inclinometer pipe 3 in the casing 2;

[0040] (4) Install the inclinometer tube

[0041] Extend the inclinometer tube 3 with the lower port closed into the installation hole of t...

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Abstract

The invention discloses an embedding method of an inclinometer casing in the formation containing silty fine sand, which comprises the following steps: (1) a guide hole is drilled out in the formationcontaining silty fine sand; (2) a sleeving whose internal diameter is greater than the external diameter of the inclinometer casing is inserted into the guide hole; (3) an installation hole of the inclinometer casing is drilled out from the sleeving; (4) the inclinometer casing with the closed lower end is extended into the installation hole of the inclinometer casing; (5) pulling out the sleeving. According to the embedding method of the inclinometer casing in the formation containing silty fine sand, the deficiency and defect in the prior art are covered, thereby avoiding the collapsing hole, solving the difficult problem of embedding the inclinometer casing in the formation containing silty fine sand, enabling the inclinometer casing to be located accurately and reaching the preset depth. The embedding method has the advantages of being simple, economical and practical, has considerable reference value in similar engineering construction field, and provides important technical guarantee for the field monitoring function in engineering.

Description

technical field [0001] The invention relates to the field of construction monitoring, in particular to a method for embedding an inclinometer pipe in a stratum containing silt and fine sand. Background technique [0002] In engineering monitoring, especially in geotechnical engineering monitoring, in order to observe the lateral displacement of deep soil, in general, it is necessary to install an inclinometer. By drilling, bury the measuring trough into the ground, align the direction of the upper guide groove of the inclinometer tube, and backfill sand or mud and other backfill materials between the inclinometer tube and the inner wall of the borehole, so that the inclinometer tube is fixed. When the soil deforms, the inclinometer pipe deforms accordingly, and the upper pulley of the inclinometer probe goes down the groove to test point by point, so that the horizontal displacement can be accurately measured. Inclinometers can reflect the displacement response of soil or s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 谭卫佳王海东刘勇蒋凡徐良兴钱军张晓明杨峰孙维根刘威李强张小刚赵振丁小龙杨志海李海淼程玖
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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