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Dynamic monitoring method for measuring landslide stability by means of rainfall

A rainfall and stability technology, applied in the field of dynamic monitoring, can solve the problems of reduced applicability, and achieve the effect of overcoming the inability to analyze and evaluate the formation mechanism and motivation of landslides and the lack of unified instability criteria

Inactive Publication Date: 2013-06-12
QINGDAO TECHNOLOGICAL UNIVERSITY
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Problems solved by technology

[0008] The shortcomings of the above methods have greatly reduced its practical engineering applicability, so it is an unresolved problem to explore a forecasting scheme suitable for this type of slope

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  • Dynamic monitoring method for measuring landslide stability by means of rainfall
  • Dynamic monitoring method for measuring landslide stability by means of rainfall
  • Dynamic monitoring method for measuring landslide stability by means of rainfall

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] In order to illustrate the present invention better, a certain rainfall-induced landslide is taken as an example to describe in detail below. The landslide is a landslide of accumulative layer along the Yangtze River. The monitoring time of the landslide in this embodiment is from January 1978 to June 1985, and the landslide was terminated in June 1985 due to instability and destruction. The specific implementation steps are as follows:

[0034] Step 1: Landslide displacement monitoring point and reference point selection

[0035] According to the key positions and characteristics of the main landslide area and the landslide mass shear tension crack 03 and shear outlet, as well as the zonal distribution of the landslide and the bedrock exposed on both sides, A3 and B3 were selected on the landslide mass 01 ( See Figure 4 ) two points as the a...

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Abstract

The invention discloses a dynamic monitoring method for measuring landslide stability by means of rainfall. The method comprises the following steps: enabling the ratio of the incremental change of rainfall and initial rainfall in a precipitation process to be a dynamic loading rate of landslide instability; enabling the ratio of the change of corresponding landslide displacement rate and the initial displacement rate to be a displacement dynamic response rate of the sliding stability; enabling the ratio of the dynamic loading rate of the landslide instability and the displacement dynamic response rate to be defined as a landslide displacement dynamic loading rate; confirming rainfall dynamic loading rate predictive parameters of a landslide with displacement rainfall dynamic loading rate of the landslide as a criterion of the landslide stability; constructing a landslide stability evaluation model according the quantitative relationship between the rainfall dynamic loading rate predictive parameters and the landslide stability; and evaluating and forecasting the landslide stability. According to the dynamic monitoring method for measuring the landslide stability by means of the rainfall, the rainfall and the landslide displacement or the displacement rate are simultaneously monitored. In addition, the dynamic monitoring method for measuring the landslide stability by means of the rainfall has the precise unified criterion for forecasting the landslide, and supplies effective evidence to landslide forecasting and early warning management.

Description

technical field [0001] The invention relates to a side slope monitoring method, in particular to a dynamic monitoring method for measuring landslide stability by using rainfall. Background technique [0002] Landslide is one of the most dangerous and destructive geological disasters. The scientific monitoring and prediction of landslide stability is the basis and premise of landslide disaster monitoring and early warning and disaster prevention and mitigation projects. [0003] At present, the most widely used landslide geological disaster prediction and evaluation methods at home and abroad are limit equilibrium mechanics evaluation method and displacement time series prediction method. [0004] The evaluation method of limit equilibrium mechanics is to assume the landslide body as a rigid body, analyze its mechanical equilibrium state along the sliding surface, and use the ratio of sliding force and anti-sliding force as the safety factor Fs of the landslide to evaluate th...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 贺可强陈为公贾玉跃阳吉宝王菲
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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