【摘要】 在硬质岩层桩(墙)施工时,面对种类繁多的钻孔设备,如何选择合适的机械和确定最佳的成孔方案,以有效控制项目成本并如期完工,已成为各项目关注的焦点之一。本文通过对广东地区常遇硬质岩类型和工程性质进行阐述,总结了常用成孔设备的适用性和技术经济性,并结合工程实例对不同成孔(槽)方法的工效进行了分析比较,供施工参考。更多还原

【Abstract】 In the hard rock pile( wall) construction,in the face of many kinds of drilling equipment,how to select the appropriate machinery,to determine the best pore forming scheme,to effectively control the cost of project,and completed on schedule,has become one of concerned focus of each project. This paper expounds the Guangdong area often encounter hard rock types,the engineering properties,and summarizes the technical economy of pore forming methods commonly used and applicable scope,and combining with engineering examples of different hole( groove) method for performance analysis and comparison.更多还原