Method for measuring CPII control network in long and large tunnel with receiving well

A technology of long tunnels and measurement methods, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc., to achieve the effects of improved accuracy, high network strength, and not easy to be blocked

Inactive Publication Date: 2020-09-04
CHINA RAILWAY SIXTH GRP CO LTD +1
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Problems solved by technology

[0003] In order to solve the problem of measurement accuracy of the CPII plane control network in a long tunnel with a receiving shaft, the present invention provides a method for measuring the CPII control network in a long tunnel with a receiving shaft

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  • Method for measuring CPII control network in long and large tunnel with receiving well
  • Method for measuring CPII control network in long and large tunnel with receiving well
  • Method for measuring CPII control network in long and large tunnel with receiving well

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with specific examples.

[0045]The DK0+050-DK1+200 section of the Dongjin Tunnel on the Southwest Ring Road adopts the open-cut method, DK1+200-DK6+127 adopts shield excavation, DK6+100 is the location of the receiving shaft, and DK6+127-DK7+239 adopts the underground excavation method The construction starts from the shield receiving shaft and ends at the north side of Xiyu Street (the handover point of the 15th Bureau of China Railway) as the end point, with a total length of 7239m. Figure 6 shown. The construction plan of the Dongjin Tunnel on the Southwest Ring Road is as follows Figure 6 As shown; the open-cut section and the shield section of the tunnel were completed in April 2019. At that time, there were about 40 meters left in the open-cut section that was not connected with the adjacent bid section. Considering the opening of the node, the project department decided to organize the open-...

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Abstract

The invention discloses a method for measuring a CPII control network in a long and large tunnel with a receiving well, and relates to the field of control network measurement of rail transit. The measurement method mainly comprises the steps of (1) CPII remeasurement and encryption outside a hole: forming a triangular or geodetic quadrilateral connected strip-shaped net by adopting a GNSS staticmeasurement mode and an edge connection type net, and performing unified adjustment; (2) receiving well connection measurement: carrying out in-hole introduction edge measurement by adopting a one-well orientation principle, calculating the coordinates of a reflective sticker fixed by a steel wire on the ground through edge measurement and angle measurement of a ground total station, transmittingthe coordinates of the reflective sticker below the vertical shaft to the coordinates of the reflective sticker below the vertical shaft through the steel wire for orientation again, and then introducing the coordinates into the point position buried in the tunnel (3) CPII measurement in the tunnel: adopting a free observation station method; (4) data processing; and (5) final result checking. Themethod provided by the invention is good in point position stability, high in net type strength and flexible in observation station arrangement; the centering error is reduced, and the angle and distance measurement precision is improved.

Description

technical field [0001] The invention relates to the field of rail traffic control network measurement, in particular to a CPII control network measurement method in a long tunnel with a receiving shaft. Background technique [0002] With the rapid development of railway construction in recent years, a large number of long tunnels continue to emerge (a single tunnel with a length of more than 10 kilometers is a long tunnel), limited by objective conditions, the current layout of the CPII plane control network in the tunnel can only use wires Way. Since the results of CPII will be used as the starting calculation basis for the track control network (CPIII), the accuracy of the CPIII control network will directly affect the smoothness of the track, thereby affecting the comfort and safety of train operation. Therefore, the measurement accuracy of the CPII plane control network in the cave is very important. In actual work, since 0.5″ high-precision total stations are mostly u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00
CPCG01C15/00
Inventor 孙新峰樊经宇李军杨启超刘中青李潇龙
Owner CHINA RAILWAY SIXTH GRP CO LTD
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