某矿山破碎站基坑加固方案优选

Optimization of Foundation Pit Reinforcement Scheme of Crushing Station in a Mine

大型露天矿山一般采用汽车—胶带输送机联合开拓系统,破碎站作为衔接节点,影响联合开拓系统整体经济效益,而且破碎站是胶带运输前端,施工进度直接影响着胶带系统的建设工期。结合某矿山破碎站基坑设计施工生产实践,通过破碎站的勘察、计算分析和险情应对,对破碎站东南西三侧边坡进行动态化设计,选择不同的加固措施进行组合,对比各设计方案在进度、经济性、安全性上的优劣,确定最优方案。通过工程监测、地下水控制措施指导施工过程,实时动态调整局部设计,在约定的工期内,很好地完成工程建设,加固效果良好,节约了建设投资,得到业主一致好评。设计应随现场变化适当进行变更,不断提高设计可靠性,对施工过程中出现的变化进行预判,并提出合理化处理建议。

Automobile-belt conveyor joint development system is generally used in large open-pit mines.As the connecting node,the crushing station affects the overall economic benefits of the joint devel⁃opment system.In addition,the crushing station is the front end of the belt transportation,and the construc⁃tion progress directly affects the construction period of the belt system.Combined with the design,construc⁃tion and production practice of the foundation pit of the crushing station in a mine,through the investiga⁃tion,calculation and analysis of the crushing station and the response to dangerous situations,the dynamic design of the three side slopes in the southeast and west of the crushing station is carried out,different rein⁃forcement measures are selected for combination,and the advantages and disadvantages of each design scheme in terms of progress,economy and safety are compared to determine the optimal scheme.The con⁃struction process is guided by the engineering monitoring,groundwater control measures,and the local de⁃sign is dynamically adjusted in real time.The project construction is well completed within the agreed con⁃struction period,with good reinforcement effect,saving construction investment,which is well received by the owner.The design shall be appropriately changed according to the site changes,so as to continuously improve the design reliability,prejudge the changes occurring in the construction process,and put forward reasonable treatment suggestions.