Reservoir area bank slope hydro-fluctuation belt degradation simulation system and experimental method

Abstract

The invention relates to the field of geological disaster prevention and control, in particular to a reservoir area bank slope hydro-fluctuation belt degradation simulation system and an experimentalmethod. The experimental method comprises the following steps: (1) putting a sample into a holder of the simulation system, and setting various experimental parameters of the simulation system; (2) calculating related parameters such as pore distribution and porosity of the sample by utilizing data acquired by a nuclear magnetic resonance system; (3) transmitting sound signals collected by an optical fiber sound wave sensing system to an upper computer for inversion calculation, and obtaining parameters such as the spatial position, the rupture time and the rupture energy of sample rupture; and (4) analyzing the rock degradation process according to the calculated related parameters. According to the method, key parameters such as pore distribution, porosity, permeability, water saturation, rock fracture position, crack geometrical characteristics, pressure, temperature and humidity of the rock mass under different working conditions can be obtained in real time, and the method has important significance and practical value for researching a reservoir area bank slope hydro-fluctuation belt degradation mechanism and a reservoir area bank slope landslide or collapse mechanism.

Description

technical field [0001] The invention relates to the field of prevention and control of geological disasters, in particular to a simulation system and an experimental method for the degradation of a bank slope drawdown zone in a reservoir area. Background technique [0002] Since the impoundment of the Three Gorges Reservoir area, the water level in the reservoir area has fluctuated periodically between 145 and 175m in elevation, forming a ebb and flow zone with a vertical drop of 30m. Under the periodic cycle of immersion in river water and rapid temperature changes, the quality, stress and rock mechanical properties of the rock mass in the bank-fluctuation zone will rapidly deteriorate, causing new geological disasters. For example, in the Qianjiangping landslide in 2003, the landslide blocked the Qinggan River and caused a huge wave of about 40 meters, causing more than 80 farmhouses and 4 factory buildings to be reduced to ruins; in 2008, 175 meters of water was experimen...

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Problems solved by technology

However, this invention can only provide video information of the entire landslide simulation process, and is not equipped with relevant detection sensors, so it cannot collect relevant parameters in the experiment

[0010] The content disclosed in the above-mentioned patent documents is not a complete simulation system for the degradation of the water-fluctuation zone in the reservoir area. Reflect the microstructural changes of the rock mass in the hydrofluctuation zone

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