强渗漏与坚硬岩层组合条件下旋挖钻机施工工法研究

Study on Construction Method of Rotary Drilling Rig under the Combination Conditions of Strong Seepage and Hard Rock Bed

摘要:

通过对强渗漏与坚硬岩层组合条件下桩基工程旋挖钻机施工技术的探索，总结出高压旋喷防渗漏与旋挖钻机牙轮筒钻和截齿取心筒钻交叉钻进入岩联合成孔施工工法，并在工程中成功应用。在处理大直径入坚硬岩层钻孔灌注桩方面效果明显，技术先进，有明显的社会效益和经济效益。

Abstract:

By the exploration of pile foundation construction method of rotary drilling rig under the combination conditions of strong seepage and hard rock bed, the combined drilling method of anti-seepage is summed up and has been successfully applied in the engineering, which is by high pressure jet grouting with cross use of cone tubular drilling and pick coring tubular drilling of rotary drilling rig to break into rocks. Obvious effects have been received in the construction of large diameter bored grouting pile in hard rock bed.