基础正循环钻机施工方案陕西正信机械化基础工程有限公司二〇一三年一月目 录一、编写依据..................................................................................................................................3二、概念介绍..................................................................................................................................31、正循环回转钻孔................................................................................................................32、反循环回转钻孔................................................................................................................33、正、反循环钻孔的适用范围：.........................................................................................34、正反循环所用的泥浆性能指标.........................................................................................45、泥浆原材料要求................................................................................................................6三、钻机组成..................................................................................................................................7四、成孔工艺：............................................................................................................................10五、注意事项：............................................................................................................................13六、劳动力计划............................................................................................................................14七、质量目标、创优规划及措施.................................................................................................14九、安全施工保证措施................................................................................................................26十、其它保证措施........................................................................................................................29十二、施工平面图....................................
