【摘要】 紧邻变电站的高陡自然边坡经过人为作用形成多级高陡坎人工边坡,为了明确变电站的安全性,对人工边坡进行勘察,勘察试验方法主要采用大型原位剪切试验,试验得出关键土层的力学参数,并采用Bishop法分析人工边坡的稳定性,分析结果表明边坡深层位置处于稳定状态,但经过工程地质类比等方法定性分析表明边坡表层形成的高陡坎易发生滑塌,且部分已经发生滑塌,多级的高陡坎长期多次滑塌易引起浅层滑坡的产生,从而影响变电站的安全,因此人工边坡采用板肋式锚杆加坡脚挡墙支护技术的治理措施。更多还原

【Abstract】 The natural high-steep slope near the substation leads to the formation of multi-stage man-made slope through the human activities. In order to ensure the security of substation, we take the large situ shear test as our main test method to explore the man-made slope. We get the mechanical parameters of key soil layer after exploration. In addition, the stability of man-made slope is analyzed by BISHOP method. Based on the analysis results, the slope is overall stable. But after the qualitative analysis of man-made slope by using engineering geological analogy method, the result shows that the high-steep ridges formed on slope are easy to slump and part of them have already slumped. Multi-stage high-steep ridges after a long term slumping may cause the shallow landslide and compromise the security of substation as a result. Consequently, plate fin type anchor rod and slope toe retaining wall support technology can be taken as the control measure to renovate the man-made slope.更多还原