Method for simultaneously determining pile position and critical depth of anti-slide pile by using displacement monitoring

A technology of displacement monitoring and critical depth, which is applied to determine the pile position and critical depth of anti-slide piles at the same time. Using displacement monitoring to simultaneously determine the pile position and critical depth of anti-slide piles, it can solve problems that cannot represent landslides, take a long time, stay, etc.

CN103150421AInactive Publication Date: 2013-06-12QINGDAO TECHNOLOGICAL UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-06-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for simultaneously determining a pile position and a critical depth of an anti-slide pile by using displacement monitoring, which is applicable to determining and designing the pile position and the critical depth of the anti-slide pile on an accumulated layer landslide. The method comprises the following steps of: (1) performing investigation, analysis and evaluation aiming at the geology of a side slope to be managed to determine a landslide body region; (2) dividing grids on the landslide body and selecting a displacement monitoring point position; (3) monitoring equipment mounting and displacement monitoring; (4) determining a synthetic total displacement value S (i, j) and vertical displacement direction rate of each monitoring point of landslide displacement; (5) determining landslide instability property and an anti-slide pile space reinforcement position; (6) determining the critical depth of a shearing slip band of the landslide body; (7) determining the pile length of the anti-slide pile of the landslide; and (8) performing information construction of the anti-slide pile. The method has the advantages of less investment cost, reliable design principle, high position determination accuracy, easiness, convenience, fastness, easiness in implementation and strong engineering applicability.
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Description

technical field

[0001] The invention relates to a method for simultaneously determining the pile position and critical depth of an anti-slide pile, in particular to a method for simultaneously determining the pile position and critical depth of an anti-slide pile by using displacement monitoring. The invention belongs to the technical field of evaluation and prevention of geotechnical engineering slope and landslide geological hazards. Background technique

[0002] In geological landslide control engineering, the simultaneous determination of the spatial position and critical depth of landslide anti-slide piles is the primary condition and plays a vital role in the design of landslide prevention and control engineering, and is an important key factor for the success of landslide prevention and control projects. At present, the determination and design methods of the spatial position and pile length of landslide anti-slide piles generally have the following several methods: o...

Examples

Embodiment

[0062] The displacement of a certain accumulative landslide is located in Zigui County, Hubei Province, about 26km away from the Three Gorges Project. The elevation of the margin is about 900m, the average slope of the slope is 23°, and there is an underlying bedrock surface, which is a typical accumulation landslide.

[0063] A method for simultaneously determining the pile position and critical depth of an anti-slide pile by using displacement monitoring, the specific steps are as follows:

[0064] (1) Conduct investigation, analysis and evaluation on the geology of the slope to be treated, and determine the area of ​​the landslide slope; conduct a preliminary investigation on the slope, and find that the landslide meets the basic elements of a typical accumulation landslide, and there are shear outlets at the front edge and tension at the rear edge Landslide forms such as rupture wall, slope gully perimeter, etc. These basic elements play a decisive role in the subsequent ...