水岩耦合作用下研山铁矿东帮顺倾边坡稳定性研究

Study on Stability of Consequent Slope on the East Side of Yanshan Iron Mine under Water-Rock Coupling Efeect

为全面了解地下水长期作用对含层理顺倾岩质边坡稳定性的影响规律,以研山铁矿东帮边坡N26勘探线所在边坡剖面为研究对象,结合不同饱水时间岩体抗剪强度参数弱化规律,对不同饱水时间作用下顺倾边坡稳定性进行分析。结果表明:饱水时间对岩体抗剪强度参数和边坡稳定性均具有显著影响,随饱水时间的增加,岩体抗剪强度参数和边坡安全系数均呈降低趋势,当边坡岩体饱水15,30,45,60,75d和90d后,边坡在安全系数为1.25的情况下,最终边坡角分别为37.5°,36.8°,36.1°,35.7°,35.4°和35.2°,研究成果为制定研山铁矿东帮边坡滑坡防治措施提供了依据。

In order to comprehensively understand the influence of the long-term effect of groundwater on the stability of the consequent rocky slope,the slope profile of the N26 exploration line of the east slope of Yanshan Iron Mine was taken as the research object.Combined with the weakening law of shear strength parameters of rock mass with different water saturation times,the stability of the slope with different saturation times was analyzed.The results showed that the water saturation time had a significant effect on the shear strength parameters of rock mass and the slope stability.With the increase of the water saturation time,the shear strength parameters of rock mass and the slope safety factor were trended to decrease.When the slope safety factor was 1.25,the final slope angle respectively was 37.5°,36.8°,36.1,35.7°,35.4°and 35.2°under the saturation time of 15 days,30 days,45 days,60 days,75 days and 90 days.The research results provided a basis for prevention measures for the east slope of the Yanshan Iron Mine.