摘要
                
                    结合工程实践,分析了旋挖钻机成孔机理,深入探讨了不同地层中的旋挖成孔工艺,通过具体工程实例,对旋挖钻机成孔工艺进行了说明,指出旋挖钻机成孔应合理选择,同时在不稳定地层采用优质泥浆稳定孔壁。
                
                By combining with project practice,the paper analyzes the mechanism for the rotary drilling rig,explores the holing craft of the rotary drilling in different layer,indicates the holing craft of the rotary drilling craft by factual projects,and points out its reasonable selection of the rotary drilling rig,and adopts the optimized mud stable hole wall in unstable layer.
    
    
    
    
                出处
                
                    《山西建筑》
                        
                        
                    
                        2009年第30期113-114,共2页
                    
                
                    Shanxi Architecture
     
    
                关键词
                    旋挖钻机
                    钻头
                    成孔工艺
                
                        rotary drilling rig
                         drilling head
                         holing craft
                
     
    
    
                作者简介
陈风云(1962-),女,工程师,河南省地质矿产勘查开发局第二水文地质工程地质队,河南郑州450053