边坡加固工程岩土设计分析

Geotechnical Design Analysis of Slope Reinforcement Engineering

以某边坡项目为例,通过现场调查法确定边坡发生滑坡的原因,基于现场调查结果设计边坡加固方案(注浆加固方案、坡面锚固+防护网方案、微型桩加固方案),经比选确定微型桩加固方案。利用内力计算及抗剪强度计算确定微型桩设计参数(如桩径、桩长等),采用Slide软件对边坡加固效果进行模拟计算。结果显示,未加固前,B区安全系数为1.114(天然工况),处于欠稳定状态;微型桩加固后,B区安全系数为1.576(天然工况),其他区的边坡安全系数也均有明显提升,都满足规范要求的1.3。

Through taking a slope project as an example,the study determines the cause of slope landslide with field investigation method,and designs the slope reinforcement scheme(grouting reinforcement scheme,slope anchoring+protection net scheme,micro pile reinforcement scheme)based on the field investigation results,and determines the micro pile reinforcement scheme by comparison and selection.At the same time,internal force calculation and shear strength calculation are used to determine the design parameters(such as pile diameter,pile length,etc.)of the micro pile.Finally,Slide software is used to simulate the reinforcement effect of the slope.The results show that the safety factor of zone B before reinforcement is 1.114(under natural conditions),which is in an understable state.After micropile reinforcement,the safety factor of zone B is 1.576(under natural conditions),and the safety factor of slope in other zones is also significantly improved,and all meet the requirements of 1.3.