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Path rectifying method for super long tunnel shield construction

A technology of tunnel shielding and path, which is applied in the direction of tunnels, earthwork drilling, mining equipment, etc., and can solve the problem that the excavation path deviates from the design direction, etc.

Inactive Publication Date: 2017-12-29
CHINA MCC17 GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the shield method construction of ultra-long tunnels, it is inevitable that the shield machine will encounter various external disturbances during the excavation process, causing the excavation path to deviate from the design direction. If the error accumulates to a certain extent, it will cause serious problems

Method used

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  • Path rectifying method for super long tunnel shield construction
  • Path rectifying method for super long tunnel shield construction

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Experimental program
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Embodiment 1

[0020] Such as figure 1 and figure 2 As shown, 1 is the cutter head, 2 is the working cavity, and 3 is the GPS locator; a path correction method for ultra-long tunnel shield construction, including the following steps: Step 1: Place 3 GPSs in the working cavity of the shield machine Locator;

[0021] Step 2: Measure the coordinates of the 3 GPS locators and upload them to the server, and the server calculates the centroid position of the section and draws it into a trajectory map;

[0022] Step 3: Comparing the traveling track diagram obtained in Step 2 with the design route to obtain the deviation correction route;

[0023] Step 4: Adjust or tentatively determine the traveling angle of the shield machine according to the correction route obtained in step 4.

[0024] Wherein: in the step 1, three GPS locators are evenly arranged on a circumferential surface of the working cavity, and they form an angle of 120 degrees with the three connecting lines formed by the centroid o...

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Abstract

The invention discloses a path correction method for ultra-long tunnel shield construction. Three GPS locators are placed in the working chamber of the shield machine; the coordinates of the three GPS locators are measured and uploaded to a server, and the server calculates the centroid of the section The position of the shield machine is drawn as a traveling trajectory map; the deviation correction route is obtained by comparing the obtained traveling trajectory diagram with the designed route; the travel angle of the shield machine is adjusted or provisionally determined according to the obtained deviation correction route. The deviation correction method in the present invention can effectively ensure that the shield construction path of the ultra-long-distance tunnel does not deviate, and is of great significance for ensuring the smooth progress of the project.

Description

technical field [0001] The invention belongs to the field of underground tunnel engineering construction, and in particular relates to a path correction method for super-long tunnel shield construction. Background technique [0002] With the growth of our country's population and the advancement of urbanization, a large number of civil engineering projects are being built, the ground space is getting smaller and smaller, and the problems of living, transportation, and environment are becoming more and more prominent. Various types of underground buildings, subways, and underwater tunnels The construction of such projects can solve these problems very well. [0003] As the main method of underground excavation space construction, the shield tunneling method is widely used because of its fully mechanized and automated operations, even though the price is relatively high. For the shield method construction of ultra-long tunnels, it is inevitable that the shield machine will en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/06
CPCE21D9/003E21D9/06
Inventor 黄超王瀚史炜赵海峰
Owner CHINA MCC17 GRP
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