A monitoring and control method for pipe jacking construction

A monitoring control and pipe jacking technology is applied in the field of measurement and deviation correction in pipe jacking construction in sand and gravel strata, and in the field of pipe jacking construction monitoring and control, to achieve the effects of improving construction work efficiency, reliable pipe jacking construction quality control, and preventing deviations.

Active Publication Date: 2022-06-28
中国水利水电第七工程局成都水电建设工程有限公司
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Problems solved by technology

The invention mainly solves the problems of artificial pipe jacking construction elevation and axis monitoring and control in sand and gravel strata

Method used

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  • A monitoring and control method for pipe jacking construction
  • A monitoring and control method for pipe jacking construction

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the specific embodiments, which further illustrate the principles of the present invention and do not limit the present invention in any way, and the same or similar technologies as the present invention do not exceed the protection scope of the present invention.

[0021] In conjunction with the attached drawings.

[0022] The monitoring and control method of pipe jacking construction includes the following steps:

[0023] (1) Preparation work: Before the pipe jacking construction, use the total station to set the axis reference point A 1 and the axis reference point B point 2 on the top surface of the working well according to the pipe jacking design requirements, and the connecting line between the two points is the pipe jacking design axis; In addition, a total station is used to set the axis direction control point D 4 at the starting hole in the foundation pit of the working well, the elevat...

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Abstract

The invention discloses a monitoring and control method for pipe jacking construction. Including: set the axis datum point A and point B according to the pipe jacking design requirements, set the axis direction control point D at the starting hole in the foundation pit, set the elevation control point C on the foundation of the excavation guide rail, and set the target target on the tunnel face; Lead the axis reference point to the 0 point of the laser level on the base of the working well; aim the vertical line emitted by the laser level at point D and the target to check the axis and control the axis direction; aim at point C through the vertical line emitted by the laser level The elevation is used as the backsight point to check with the target, and the elevation is controlled; according to the deviation data on the measurement light target, the pipe jacking excavation is corrected. The invention adopts the laser level combined with the hanging wire method, and uses the centering air bubble of the laser level to center the center of the hanging wire hammer as a reference point, and the cross ray of the level is aimed at the axis point of the front section, and the axis and elevation are checked by projecting the ray on the target on the face of the tunnel. In order to achieve the purpose of correction.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering construction, is particularly suitable for measurement and deviation correction control technology in pipe jacking construction in sand and gravel strata, and particularly relates to a pipe jacking construction monitoring and control method. Background technique [0002] In construction, especially in underground construction, it is often necessary to carry out machine pit or tunnel construction in sand and gravel formations. The geological characteristics of the sand-gravel stratum have large particle size in some sections, which requires artificial pipe jacking construction. In pipe jacking construction, elevation and axis control are the most difficult points. In particular, the sand and gravel stratum has the characteristics of easy deviation and difficult deviation correction. The quality control of the pipeline axis and elevation directly affects whether the line can be connec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00G01C5/00G01C15/00
CPCE21D9/00E21D9/003G01C15/00G01C5/00
Inventor 赵全峰杨治平曹栋尹鑫周毅徐晶邢虹微张萍罗元兵王俊杰张恒武广新
Owner 中国水利水电第七工程局成都水电建设工程有限公司
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