桩基成孔施工中防塌泥浆性能试验分析  

Analysis on Anti-sloughing Mud Properties in the Pile Foundation Borehole Construction

作　　者：郝延周[1] 

机构地区：[1]河南城建学院土木工程学院,河南平顶山467036

出　　处：《探矿工程（岩土钻掘工程）》2014年第3期59-62,共4页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：塌孔、缩径是桩基成孔施工中经常出现的问题,成孔的质量直接影响钻孔灌注桩桩体的质量。目前的成孔施工中除了下套管之外最有效的护壁方法就是采用防塌泥浆护壁。通过对各种组分泥浆试验性能参数的比较与分析,优选出防塌泥浆最佳配方,从而提高钻孔灌注桩成孔施工中孔壁的稳定性。Hole collapse and diameter shrinkage often occur in the pile foundation borehole construction, the borehole qual-ity directly affects the quality of the bored grouting pile.Except for casing in borehole construction, the most effective wall protection method is by sloughing mud.Through the comparison and analysis on various mud with ingredients, the best for-mula of collapse preventing mud is selected to improve the stability of hole wall in bored grouting pile construction.

关 键 词：桩基 成孔 防塌泥浆 性能参数 

分 类 号：P634.6[天文地球—地质矿产勘探] TU473.1[天文地球—地质学]