井冈山G220滑坡实时监测与加固方案优化研究

Optimization study on real-time monitoring and reinforcement plan of G220 landslide in Jinggang Mountain

为治理井冈山G220滑坡,在边坡初步加固方案可行性验证的基础上提出2种优化方案。方案1:调整初步加固方案中C型抗滑桩的桩位、桩长和桩间距,并新增1排C型抗滑桩,而D型抗滑桩的布设与初步加固方案保持一致;方案2:保持方案1中C型抗滑桩的布设不变,调整D型抗滑桩的桩间距。研究表明:采用初步加固方案进行边坡治理是可行的,但设计偏危险;2种优化治理方案得到的边坡稳定性系数不仅满足工程加固要求,且较初步加固方案分别提高了18.2%和12.4%,综合考虑边坡工程的长期稳定性和治理经济性,推荐采用方案2进行边坡治理。基于实时监测数据进行边坡治理方案的设计和可行性验证是可行的。

In order to treat the G220 landslide in Jinggang Mountain,two optimization schemes are proposed on the basis of the feasibility verification of the preliminary slope reinforcement scheme.Scheme 1 isto adjust the pile position,pile length and pile spacing of C-type anti-slip piles in the preliminary reinforcement scheme,and add a new row of C-type anti-slip piles,while the layout of D-type anti-slip piles remains the same as the preliminary reinforcement scheme;Scheme 2 is to keep the layout of C-type anti-slip piles in Scheme 1 unchanged,and adjust the pile spacing of D-type anti-slip piles.The study shows that it is feasible to adopt the preliminary reinforcement scheme for slope management,but the design is dangerous;the slope stability coefficients obtained from the two optimized treatment schemes not only meet the engineering reinforcement requirements,but also increase by 18.2%and 12.4%respectively compared with the preliminary reinforcement scheme,and considering the long-term stability of the slope project and the economics of management.It is recommended to adopt scheme 2 for slope treatment.It is feasible to design and verify the feasibility of the slope treatment plan based on real-time monitoring data.