Comprehensive measurement and construction method for three-dimensional coordinates of underground pipelines

A technology of three-dimensional coordinates and underground pipelines, which is applied in directions such as navigation through speed/acceleration measurement, to achieve high accuracy, not easy to dig off, and accurate embedding effects

Inactive Publication Date: 2013-09-25
上海置诚城市管网工程技术股份有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

However, there are many problems in practical application, one of the big factors is how to obtain accurate and correct underground pipeline data

Method used

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Embodiment Construction

[0019] In order to make the measures, creative features, goals and effects achieved by the technology of the present invention easy to understand, the present invention is further described below.

[0020] The construction method of three-dimensional coordinate comprehensive survey of underground pipeline is characterized in that it includes the following methods:

[0021] Method 1: Use GPS for positioning, measure the coordinates of all known underground pipeline points, and achieve one-time accurate positioning;

[0022] Method 2: The total station cooperates with GPS for positioning. If the GPS signal is affected and the measurement cannot be completed, measure all known three-dimensional coordinates of underground pipeline points in the geodetic coordinate system;

[0023] Method 3: GPS cooperates with inertial gyroscope for positioning, and can quickly complete the collection of all underground pipeline data in the empty pipeline. After processing by computer, more accura...

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Abstract

The invention belongs to the field of underground measurement and provides a comprehensive measurement and construction method for a three-dimensional coordinate of an underground pipeline. The method is characterized by comprising the following steps: 1, positioning by employing a global position system (GPS), measuring coordinates of all known underground pipeline points, and accurately positioning for one time; 2, positioning by using both a total station and the GPS, and measuring three-dimensional coordinates of all the known underground pipeline points in a geodetic coordinate system under the condition that the signal of the GPS is influenced and measurement cannot be finished; and 3, positioning by using both the GPS and an inertial gyroscope, wherein data of the total underground pipelines can be rapidly acquired in a blank pipe, the data is processed through a computer, and more accurate and detailed three-dimensional coordinates of the pipelines can be obtained. According to the method, the problems that the cable breakage rate is high, the applicability is low and the precision is low are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of underground measurement, in particular to a three-dimensional coordinate comprehensive measurement method for underground pipelines. Background technique [0002] Urban underground pipelines are an important part of urban infrastructure, known as the "vessels" of the city, criss-crossing and spreading throughout the city, forming a densely woven pipeline network. Urban underground pipelines provide the city with various information, electricity, gas and water 24 hours a day, and also discharge a lot of waste for the city, providing the foundation and guarantee for economic development and citizens' life. [0003] Due to historical reasons, the phenomenon of unclear number of underground pipelines and incomplete information is very prominent, which brings great difficulties to the compilation of planning, development and construction, scientific management and correct decision-making. Even accidents such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/14
Inventor 张南王学军郑雅琼
Owner 上海置诚城市管网工程技术股份有限公司
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