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针对某钨矿须在滑坡体上建设台阶式重载厂房的问题,基于选厂建设与滑坡治理相结合的思路,利用4排悬臂式抗滑桩作为滑体支挡结构,同时兼做选厂内台阶挡土墙基础和选厂厂房基础,充分发挥承载抗滑桩阻滑和承重的双重作用,提出台阶式重载厂房下滑坡体治理优化设计方法。依据传递系数法推导得出考虑上部厂房荷载条件下多排承载抗滑桩抗力分配计算方法,并在此基础上进行钨选厂滑坡推力分配计算和承载抗滑桩结构优化设计研究。有限元法计算结果和基于本文优化设计方案的滑坡体长期监测数据,验证了多排承载抗滑桩抗力分配计算方法和该钨矿滑坡体治理优化设计方法的合理性和适用性。针对现行规范在多排承载抗滑桩抗力分配计算方法上的空白,提出了相应的补充意见。为保证滑坡体上部厂房长期稳定前提下进行滑坡体治理提供了有益的设计思路,也为类似工程的滑坡体治理和厂房等建筑物建设提供了借鉴和参考。
Aiming at the problem of a tungsten ore mine being required to build a staircase heavy load plant on a landslide body, based on the idea of combining plant selection with landslide control, 4 rows of cantilever anti-slide piles are used as the slide retaining structure, The inner wall of step retaining wall and foundation of plant selection make full use of the dual functions of sliding resistance and load-bearing of anti-slide piles, and put forward the optimal design method of landslide treatment in step-type heavy load plant. Based on the transfer coefficient method, the calculation method of resistance distribution of multi-row load-bearing anti-slide piles under the load of upper plant was deduced. Based on this, the calculation of thrust distribution of tungsten-bearing plant landslide and the optimization design of bearing anti-slide pile were studied. Finite element method and long-term monitoring data of landslide body based on the optimized design scheme of this paper, the rationale and applicability of multi-row anti-slide pile resistance distribution calculation method and optimization design method of landslide body management are verified. In view of the blank of the current code in calculating the resistance distribution of anti-slide piles of multi-rows, the corresponding supplementary opinions are put forward. It provides useful design ideas for landslide control under the premise of long-term stability of the upper landslide plant. It also provides reference and reference for the construction of landslide bodies and plants in similar projects.