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Application examples of gyro theodolite
Dec 28, 2018

Tunnel centerline measurement

In excavation projects such as tunnels, the centerline measurement in the pit generally uses long-distance wires that are difficult to guarantee accuracy. Especially in the case of shield tunneling, it is necessary to have high angle measurement accuracy and shift accuracy from the short reference center line of the pit. The ground and underground corresponding inspections are often performed during the measurement to ensure measurement. Precision. Especially in dense urban areas, it is impossible to carry out excessive testing operations and encounter difficulties. If the gyro theodolite is used, an absolutely accurate azimuth reference can be obtained, and the high-cost inspection operation (minimum checkpoint) can be reduced, which is an efficient centerline measurement method.

Obtaining the direction angle when viewing obstacles

When there is a visual obstacle and the direction angle cannot be obtained from a known point, the azimuth measurement or the gyro theodolite measurement method can be used to obtain the direction angle (according to the construction province measurement specification). Compared with astronomical measurements, the gyrotheodolite measurement method has many advantages: less dependence on the weather, no dependence on the cloud, no complicated astronomical calculation, and the direction angle of any line can be obtained in the field, and the closure difference can be easily calculated.

True North determination required for day shadow calculation

There are height restrictions on high-rise buildings in the city or suburbs that have sunshine or daylight conditions. When applying for a building, a daily photo will be attached. This day's image is a high-precision true north direction measurement required for calculation and drawing, based on the 8:00 to 16:00 of the true sun of the winter solstice. The gyro theodolite can be used to measure true north measurements that are unaffected by weather and time.

gyro theodolite

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