Structural surface control slope stability evaluation method based on excavation deformation

An evaluation method and technology of structural surface, which can be used in infrastructure engineering, excavation, instruments, etc., and can solve problems such as low reliability

Active Publication Date: 2018-11-23
广东中钦建设集团有限公司
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Problems solved by technology

This type of method is less reliable, and there is a big difference with the actual situation

Method used

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  • Structural surface control slope stability evaluation method based on excavation deformation
  • Structural surface control slope stability evaluation method based on excavation deformation
  • Structural surface control slope stability evaluation method based on excavation deformation

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Embodiment 1

[0039] In view of the lack of theoretical calculation method for unsupported slope deformation and the low reliability of empirical estimation based on measured values, this embodiment discloses a method for evaluating the stability of slopes controlled by structural planes caused by excavation. Calculations are performed on the sliding process of a rock mass to determine its steady state and predict its displacement.

[0040] In this example, a cutting slope in Chongqing is selected as the structural plane controlling rock slope. Under the influence of excavation at the foot of the slope, the stability of the slope declined, and some rock mass near the foot of the slope suffered from landslides and instability, with a scale of about 2000m 3 , leading to the formation of dangerous rock blocks in the upper rock mass, and tension cracks in the unloading zone at the top of the slope. see figure 1 , the slope stability evaluation method of structural plane control caused by exca...

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Abstract

The invention provides a structural surface control slope stability evaluation method based on excavation deformation. The method comprises the steps that a to-be-evaluated structural surface controlslope is subjected to landslide inspection; a potential slip mass of the to-be-evaluated slope is subjected to stress analysis; a potential slip mass sliding displacement model of the to-be-evaluatedstructural surface control slope is constructed, and a potential slip mass displacement process curve is obtained through calculation. The real-time stability state of the structural surface control slope can be subjected to dynamic judgement by means of the method in cooperation with on-site deformation monitoring data. The convergence of the displacement can be calculated according to the slip mass, and the long-term stability of the structural surface control rock slope can be forecast to a certain degree.

Description

technical field [0001] The invention relates to the technical field of geological disaster prediction and forecasting, in particular to a modeling method for slope sliding displacement. Background technique [0002] The instability problems of rocky high slopes are widely distributed both in time and in space. Since the study of landslides began, scholars from all over the world have focused on the analysis and evaluation of slope stability, and at the same time proposed many quantitative calculation methods, such as circular sliding method, Swedish method, Bishop method, etc., in the design and construction of slope engineering. Has been widely used. In actual engineering, the safety factor of slope stability is usually used as the control condition of slope engineering design and construction, and the monitoring of slope displacement (including lateral and vertical deformation) is the key to ensure slope stability. At present, on-site monitoring of slopes is also a major...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20G06F17/50
CPCE02D17/20G06F30/20G06F2119/04G06F2119/06
Inventor 王俊杰李玉桥赵天龙付长静黄诗渊
Owner 广东中钦建设集团有限公司
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