Settlement point device capable of resisting frost heaving and thawing settlement of soil body and soil body monitoring method

Abstract

The invention provides a settlement point device capable of resisting frost heaving and thawing settlement of a soil body and a soil body monitoring method, and belongs to the technical field of ground settlement monitoring of a frozen soil region. The settlement point device comprises a protection tube, a measuring rod, a tapered drilling protection head and a sealing ring; the measuring rod comprises an external thread part and a polish rod part; an internal thread ring is arranged at one end of the protection tube; the measuring rod is located in the protection tube and the external thread part of the measuring rod is engaged with internal threads of the internal thread ring; a space between the polish rod part of the measuring rod and an inner wall of the protection tube is filled with lubricating grease; the minor diameter of the internal thread ring is smaller than the diameter of the polish rod part; the length of the protection tube is greater than the thickness of a frozen soil layer; the sealing ring is used for sealing the lubricating grease in the space formed by the protection tube and the polish rod part; the external thread part of the measuring rod is connected with the tapered drilling protection head. After the settlement point device is buried, the lubricating grease can be used for effectively separating the protection tube and the measuring rod when the frozen soil layer is subjected to frost heaving and thawing settlement, so that the measuring rod is not influenced by the frozen soil layer, and the frost heaving and thawing settlement of the soil body can be effectively resisted.

Description

technical field [0001] The invention relates to the technical field of ground subsidence monitoring in permafrost regions, in particular to a subsidence point device and a soil monitoring method for resisting soil frost heaving and thawing. Background technique [0002] With the continuous development of my country's economy, transportation facilities such as subways and light rails are gradually increasing. During the construction process of transportation settings such as subways and light rails, it will have a certain impact on the surrounding environment. For example, it will cause the surrounding soil to settle. In order to ensure the safety of construction and the safety of surrounding buildings, multiple monitoring points will be set up in the surrounding soil during the construction process, and settlement point devices will be arranged at each monitoring point, and the settlement of the ground will be measured according to the settlement point devices Condition. [0...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems existing in the prior art that the measuring rod is driven up when the frozen soil layer is heaved, and the measuring rod is driven down when the frozen soil layer thaws, thereby affecting the monitoring results, on the one hand, the present invention provides a resistance Settlement point device for soil frost heave and thaw settlement, the settling point device includes a protection tube, a measuring rod, a conical drilling head and a sealing ring;

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