Experimental investigation and numerical simulation on the effect of fissure water pressure in vertical sliding surface

This paper studies the effect of fissure water pressure in different fractures on the critical angle of landslide by laboratory investigation and numerical simulation in order to understand the mechanisms of fissure water pressure on landslide stability. Laboratory observations show that the effect of fissure water pressure on the critical angle of landslide is little when the distance between water-holding fracture and slope toe is three times greater than the depth of fissure water. These experimental results are also simulated by a three-dimensional face-to-face contact discrete element method. This method has included the fissure water pressure and can accurately calculate the critical angle of jointed slope when fissure water pressure in vertical sliding surface exists.Numerical results are in good agreement with experimental observations. It is revealed that the location of water-holding structural surface is important to landslide stability. The ratio of the distance between water-holding fissure and slope toe to the depth of fissure water is a key parameter to justify the effect of fissure water pressure on the critical angle of landslide.

作 者： ZHANG Lei LI Shihai LIAN Zhenzhong WANG Yuannian   作者單位： ZHANG Lei,LIAN Zhenzhong(Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;Graduate School, Chinese Academy of Sciences, Beijing 100060, China)

LI Shihai,WANG Yuannian(Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China) 

刊 名： 中國科學(xué)E輯（英文版）  SCI 英文刊名： SCIENCE IN CHINA SERIES E(TECHNOLOGICAL SCIENCES)  年，卷(期)： 2005 48(z1)  分類號： P61  關(guān)鍵詞： jointed rock slope   discrete element method   fracture in vertical sliding surface   model experiment   fissure water pressure  

【Experimental investigation and numer】相關(guān)文章：

Rolling Control Characteristic Experimental Investigation of a Canard Missile with Free-Spinning Tail04-27

Experimental study on Cr(Ⅵ) reduction by Pseudomonas aeruginosa04-25

Experimental study on the simultaneous desulfurization and denitrification by duct injection04-25

Experimental study on the interaction of fine water mist with solid pool fires04-27

Investigation into debris cloud characterizations for oblique hypervelocity impact of projectiles on bumper04-27

Investigation of the Aerodynamic Character in Turbine Cascades with Aft-loaded Profile04-26

Experiment and mechanism investigation on advanced reburning for NOx reduction: influence of CO and temperature04-27

Experimental approaches and analytical technique for determining heavy metals in fallen dust at ferrosilicon production04-25

INVESTIGATION OF WO3-DOPED TiO2 FILM COMPOSITE PHOTOCATALYST04-26

Experimental studies on electrical breakdown field strength of electrode with water mist containing MC additives04-27