A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ESTIMATION METHOD FOR FORM OF DRILLED HOLE
PROBLEM TO BE SOLVED: To provide an estimation method for a form of a drilled hole enabling a trustworthy estimation at a low cost and through a simple measurement operation on a ground, the drilled hole being formed by an ordinary auger instead of a special auger.SOLUTION: Penetration work, in which an auger is penetrated into a ground B from a position A on a ground surface, is divided into a plurality of parts according to a unit work amount, and a measurement is made on the following items each time the unit work amount for the penetration work is completed: a penetration amount L per unit work amount by the auger into the ground from the position on the ground surface; and an angle of inclination of the auger to a vertical line F from the position on the ground surface passing through a drilled hole H. A calculation is made for a plurality of times on a depth dl of the drilled hole and a deviation D of the auger in a horizontal direction from the drilled hole at the position on the ground surface, using the penetration amount and the angle of inclination obtained in the measurement work, the calculation being made each time the unit work amount is completed for a plurality of times. The plurality of calculated values of the depth and the deviation in the horizontal direction is integrated sequentially in an order of the calculation work, for estimating a form of the drilled hole.SELECTED DRAWING: Figure 5
【課題】特殊なオーガを使用することなく、通常のオーガを用いて、地上における測定作業を行うことのみで、オーガによって形成される掘削孔の形状を、安価にかつ簡単な運用で、信頼性のある推定を行うことが可能な掘削孔形状の推定方法を提供する。【解決手段】オーガを地表面Ａ位置から地中Ｂに向けて貫入する貫入作業を、単位作業量毎に複数回に分け、貫入作業の単位作業量が完了する度に、単位作業量当たりのオーガの、地表面位置から地中への貫入量Ｌと、地表面位置における掘削孔Ｈを経過する鉛直線Ｆに対しオーガがなす傾斜角とを測定する測定作業を行い、各測定作業で得られる貫入量及び傾斜角を用いて、複数回の単位作業量完了時それぞれにおける、掘削孔の深度ｄｌと地表面位置における掘削孔に対するオーガの水平方向ずれ量Ｄとを複数算定し、算定された複数の深度及び水平方向ずれ量を、測定作業順に順次積算して、掘削孔の形状を推定する。【選択図】図５
ESTIMATION METHOD FOR FORM OF DRILLED HOLE
PROBLEM TO BE SOLVED: To provide an estimation method for a form of a drilled hole enabling a trustworthy estimation at a low cost and through a simple measurement operation on a ground, the drilled hole being formed by an ordinary auger instead of a special auger.SOLUTION: Penetration work, in which an auger is penetrated into a ground B from a position A on a ground surface, is divided into a plurality of parts according to a unit work amount, and a measurement is made on the following items each time the unit work amount for the penetration work is completed: a penetration amount L per unit work amount by the auger into the ground from the position on the ground surface; and an angle of inclination of the auger to a vertical line F from the position on the ground surface passing through a drilled hole H. A calculation is made for a plurality of times on a depth dl of the drilled hole and a deviation D of the auger in a horizontal direction from the drilled hole at the position on the ground surface, using the penetration amount and the angle of inclination obtained in the measurement work, the calculation being made each time the unit work amount is completed for a plurality of times. The plurality of calculated values of the depth and the deviation in the horizontal direction is integrated sequentially in an order of the calculation work, for estimating a form of the drilled hole.SELECTED DRAWING: Figure 5
【課題】特殊なオーガを使用することなく、通常のオーガを用いて、地上における測定作業を行うことのみで、オーガによって形成される掘削孔の形状を、安価にかつ簡単な運用で、信頼性のある推定を行うことが可能な掘削孔形状の推定方法を提供する。【解決手段】オーガを地表面Ａ位置から地中Ｂに向けて貫入する貫入作業を、単位作業量毎に複数回に分け、貫入作業の単位作業量が完了する度に、単位作業量当たりのオーガの、地表面位置から地中への貫入量Ｌと、地表面位置における掘削孔Ｈを経過する鉛直線Ｆに対しオーガがなす傾斜角とを測定する測定作業を行い、各測定作業で得られる貫入量及び傾斜角を用いて、複数回の単位作業量完了時それぞれにおける、掘削孔の深度ｄｌと地表面位置における掘削孔に対するオーガの水平方向ずれ量Ｄとを複数算定し、算定された複数の深度及び水平方向ずれ量を、測定作業順に順次積算して、掘削孔の形状を推定する。【選択図】図５
ESTIMATION METHOD FOR FORM OF DRILLED HOLE
掘削孔形状の推定方法
MORITA SHUJI (author)
2016-06-23
Patent
Electronic Resource
Japanese
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