气动潜孔锤跟管钻进技术在岩土工程勘察施工中的应用

Application of Pneumatic DTH Hammer Drilling with Casing in the Geotechnical Engineering Investigation

摘要:

以渤船重工新型总装生产线工程岩土工程勘察项目为依托，应用KG940A型高风压履带式潜孔钻车﹑采用气动潜孔锤跟管钻进工艺，结合空气正循环排渣方式,摸索总结出一套针对复杂破碎覆盖层的干式成孔新方法，钻进效率及钻孔质量显著提高，为岩土工程勘察勘探孔施工增添了一种新的思路。

Abstract:

Relying on the geotechnical engineering investigation project for a new assembly line of Bohai Shipbuilding Heavy Industry Co., Ltd., by the application of KG940A high air pressure and crawler DTH drill and the use of pneumatic DTH drilling with casing combined with air positive circulation slag discharging, a set of new methods of dry-boring is explored according to complex broken overburden layer, which makes significant improvement in drilling efficiency and drilling quality.