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Composite hydrodynamic reservoir bank slope stability prediction method

A technology of stability prediction and hydrodynamics, which can be used in instrumentation, calculation, electrical and digital data processing, etc., and can solve problems such as misjudgment of landslide stability.

Inactive Publication Date: 2019-05-21
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current researches use single hydrodynamic variables such as rainfall or reservoir water as the inducing factors of landslides to calculate the response ratio of loading and unloading. For reservoir-type landslides, the deformation and destruction of landslides are often affected by the combination of reservoir water level changes and rainfall formation. Hydrodynamic influence, the dynamic loading and unloading parameters of the landslide should include the superposition of these two factors, and only consider the effect of a single hydrodynamic factor on the landslide, which may lead to misjudgment of the stability of the landslide

Method used

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  • Composite hydrodynamic reservoir bank slope stability prediction method
  • Composite hydrodynamic reservoir bank slope stability prediction method
  • Composite hydrodynamic reservoir bank slope stability prediction method

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Experimental program
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Effect test

Embodiment 1

[0079] Such as Figure 1 to Figure 6 As shown, the method for predicting the bank slope stability of the composite hydropower bank described in the present invention has the following steps:

[0080] Step 1: Preliminary investigation and selection of displacement monitoring points for reservoir-type landslides

[0081] Preliminary investigation and surveying of the reservoir-type landslide to be evaluated are carried out to determine the distribution range and size of the landslide, so as to select a reasonable layout method for the slope displacement monitoring point 02: ①according to the reservoir water level scheduling plan, the highest reservoir water level touches the slope from 01 to Set n displacement monitoring points (n ≥ 3) within the range of tension crack 03 at the trailing edge; ② The displacement monitoring reference points (not less than 3) are selected in the stable bedrock or non-deformed area outside the monitored landslide mass to form a displacement The mo...

Embodiment 2

[0193] The following takes a reservoir-type composite water landslide as an example to describe in detail. The landslide is a landslide of accumulative layer along the Yangtze River, which is a typical reservoir-type landslide. The water level of the reservoir drops from May to September every year. The monitoring time of this example is from May to September 2012.

[0194] Such as figure 1 As shown, the method for predicting the bank slope stability of the composite hydropower bank described in the present invention, the specific implementation steps are as follows:

[0195] Step 1: Preliminary investigation and selection of displacement monitoring points for reservoir-type landslides

[0196] Carry out preliminary investigation and mapping of the reservoir-type landslide to be evaluated, determine the distribution range and size of the landslide, and then choose a reasonable layout method for slope displacement monitoring points: ①According to the reservoir water level sche...

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Abstract

The invention relates to a composite hydrodynamic reservoir bank slope stability prediction method, which belongs to the technical field of slope stability evaluation and landslide disaster monitoringand early warning. The method comprises the following steps of preliminary investigation of a reservoir-type landslide, selection of a displacement monitoring point, arrangement and installation of monitoring equipment, processing of monitored data, determination of landslide basic physical and mechanical property parameters and a slope slicing method, determination of overall residual downward thrust increment of the slope above a water line under effects of rainfall, determination of a slope saturation line during a reservoir water line decreasing process, determination of residual downwardthrust increment of the slope in a water line change range under effects of the reservoir water line, determination of reservoir-type landslide composite water loading and response parameters, determination of a composite hydrodynamic increased load displacement response ratio prediction model, and evaluation and monitoring and early warning of the composite hydrodynamic slope stability. The corresponding relationship between the reservoir-type landslide composite hydrodynamic increased load displacement response ratio parameters and the landslide stability is disclosed, and on the basis, a reservoir-type slope stability evolution law is analyzed and evaluated.

Description

technical field [0001] The invention relates to a method for predicting bank slope stability of a composite hydrodynamic reservoir, belonging to the technical field of slope stability evaluation and landslide disaster monitoring and early warning. Background technique [0002] The special engineering characteristics of major water conservancy projects and the complex water environment conditions determine that reservoir-type landslides have huge potential hazards. For reservoir-type landslides, during the process of reservoir water level fluctuation, if encountering heavy rainfall, the probability of instability will increase. Therefore, the coupling effect of reservoir water and rainfall will inevitably destroy the original groundwater operating environment in the reservoir area, and form a special composite water environment dynamic effect in the Three Gorges Project reservoir area, which greatly affects and controls the frequency and scale of landslide disasters in the re...

Claims

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Application Information

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IPC IPC(8): G08B21/10G06F17/50
Inventor 贺可强郭璐吴丽丽
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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