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Shield segment center detection system and shield posture determination method

A technology to determine the method and attitude of the shield, which is applied in the directions of measuring devices, earthwork drilling, surveying and navigation, etc., to achieve the effect of ensuring quality and improving work efficiency

Active Publication Date: 2011-02-02
上海地铁盾构设备工程有限公司
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  • Abstract
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Problems solved by technology

[0008] Therefore, the traditional method of determining the attitude of the shield based on the center of the shield head and the center of the shield tail has deficiencies

Method used

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  • Shield segment center detection system and shield posture determination method
  • Shield segment center detection system and shield posture determination method
  • Shield segment center detection system and shield posture determination method

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Embodiment Construction

[0030] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0031] Such as figure 2 As shown, this embodiment is based on computer and network communication technology, equipped with real-time system of sensors, instruments and meters and control equipment: it mainly includes circumferential scanning device, electrical control device, station-level data processing system, power supply, among which the circumferential The scanning device is composed of a laser rangefinder, an inclination sensor, and a high-precision rotary console to complete the distance measurement and scanning of the circumferential inner wall of the newly assembled segment of the shield tail, such as Fig...

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Abstract

The invention relates to the technical field of underground railway tunneling shield construction. A shield segment center detection system is a real-time system which is provided with a sensor, an instrument and control equipment based on a computer and network communication technology. A shield posture determination method comprises the following steps of: scanning the inner surface of the last segment section of a shield tail of a shield machine which is just manufactured along the circumferential direction in a circumference scanning mode; performing curve fitting by using the acquired data so as to acquire the relative position between a field tail segment center and a circumference scanning rotation center; calculating the geodetic coordinate of the field tail segment center through the geodetic coordinate of the rotation center; and determining the working posture of the shield machine by realizing the connecting line between the central geodetic coordinate of the last segment section which is just manufactured and the shield head central geodetic coordinate of the shield machine. Based on a tunnel formed by the shield, the working posture of the shield machine is determined and can be grasped by the shield machine accurately, further construction can be guided and the quality of an excavated tunnel can be effectively ensured.

Description

technical field [0001] The invention relates to attitude detection in the technical field of subway tunnel shield construction, and proposes a method for confirming the working attitude of a shield machine based on the traveling direction of the tunnel itself. geodetic coordinates to determine the attitude of the shield. Background technique [0002] The basic principle of shield tunneling is to excavate the soil along the tunnel's design axis and advance with a physical steel component. Before the preliminary or final tunnel lining is completed, this steel component mainly plays the role of protecting the excavated soil and ensuring the safety of operators and mechanical equipment. This steel component is called shield for short. On the other hand, the role of the shield is to withstand the pressure from the formation and prevent the intrusion of groundwater or quicksand. Shield method tunneling, that is, using a shield machine to control the excavation surface and surrou...

Claims

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Application Information

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IPC IPC(8): G01C21/00E21D9/06
Inventor 张德海李炯虞建国王峰
Owner 上海地铁盾构设备工程有限公司
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