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Leveling rod for measuring subsidence of ground with large surface relief and use method thereof

A technology of surface subsidence and leveling rod, which is applied in the directions of measuring devices, height/horizontal measurement, surveying and navigation, etc. It can solve the problems of large surface subsidence, large surface, inconvenient carrying, etc., and achieve increased measurement accuracy and large measurement range , Ease of use

Inactive Publication Date: 2014-02-19
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

my country has carried out a lot of research work on surface subsidence, but due to the complex surface conditions and large surface undulations, there are many weaknesses in the use of level instruments to measure surface subsidence. However, it cannot meet the measurement requirements. If a longer leveling rod is used, it is inconvenient to carry when measuring.

Method used

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  • Leveling rod for measuring subsidence of ground with large surface relief and use method thereof

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Such as figure 1 The shown leveling rod for surface subsidence measurement with large surface undulations includes a ruler body 1, and the ruler body 1 includes a first ruler 4, a second ruler 5 and a third ruler 6, and the first The subscale 4, the second subscale 5 and the third subscale 6 adopt a telescopic fit, and the widths decrease successively; both sides of the upper part of the first subscale 4 and the second subscale 5 are provided with tight fittings for fixing the subscale position. Fixed screw 2, a level 7 is provided on the first subscale 4, a handle 3 is respectively provided on both sides of the first subscale 4, and the positions of the two handles 3 are staggered in the horizontal direction; the maximum stretching of the ruler body 1 is The length is nine meters, and the maximum stretching length of each subrule is three meter...

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Abstract

The invention discloses a leveling rod for measuring subsidence of ground with large surface relief. The leveling rod comprises a rod body including three or more segments of telescopically cooperated sub-rods, wherein the width of each sub-rod decreases gradually from bottom to top; two adjacent sub-rods are fastened together through a fastener device arranged at the upper end of the lower sub-rod; a level gage is arranged on the bottommost sub-rod. The invention also discloses the use method of the leveling rod. The use method comprises three steps of length adjustment, vertical state adjustment, and resetting. The leveling rod provided by the invention is adaptable to surface measurement with large surface relief; the sub-rod becomes thinner and lighter from bottom to top, so that the sub-rod is effort-saving in erection; the leveling rod is convenient to hold and use by arranging a handle; every two sub-rods are fastened with a fastening screw to effectively slippage between the sub-rods, thereby improving the measurement accuracy.

Description

technical field [0001] The invention relates to the technical field of leveling equipment, in particular to a leveling gauge used for surface subsidence measurement with large surface undulations and a use method thereof. Background technique [0002] Mountains are widely distributed in our country. To build underground tunnels in mountainous areas, it is necessary to observe the surface settlement in time during construction to ensure the safety of tunnel projects. my country has carried out a lot of research work on surface subsidence, but due to the complex surface conditions and large surface undulations, there are many weaknesses in the use of level instruments to measure surface subsidence. And can't satisfy measurement requirement, if adopt longer leveling rod then carry inconvenient when measuring. Contents of the invention [0003] The present invention provides a leveling rod with simple structure and capable of meeting the needs of surface settlement measurement...

Claims

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Application Information

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IPC IPC(8): G01C5/00
CPCG01C5/00
Inventor 孙超群李利平许振浩郭明林鹏蔡健健
Owner SHANDONG UNIV
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