STABILIZATION LIQUID COMPOSITION HAVING HIGH SPECIFIC GRAVITY AND DRILLING METHOD USING STABILIZATION LIQUID

摘要

PROBLEM TO BE SOLVED: To provide a high-performance stabilization liquid composition used for drilling method using a stabilization liquid for drilling of hole or groove so as to enable to perform drilling under severe conditions, e.g. drilling of a hole or a groove under underground water conditions having such high pressurized water head as to naturally spout or drilling of hole or groove to overconsolidated clay ground of diluvium layer or ground having a large flow rate of underground water and construct earth drill pile excellent in long-term disperse stability performance and concrete replacing property and continuous underground wall, etc. SOLUTION: This high-performance stabilization liquid composition having a high specific gravity is obtained by compounding kibushi-clay and/or kaolin mineral composed of kaolin as clay mineral and has >1 liquid specific gravity. For example, the stabilization liquid is obtained by compounding 1 m3 city water with 40 kg bentonite, 360 kg kibushi-clay, 2 kg CMC and 2 kg dispersing agent.