A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND PROPERTY ESTIMATION METHOD, AND GROUND PROPERTY ESTIMATION SYSTEM
To propose a ground property estimation method and a ground property estimation system that can respectively grasp a state of rock deterioration and a state of cracks easily and inexpensively.SOLUTION: A ground property estimation method includes the steps of: grasping a standard excavation volume specific energy and a standard elastic wave velocity in a ground sample; providing an excavated hole H in a ground G to be estimated using an excavating tool 2; deriving an excavated volume specific energy from an excavation energy required when providing the excavated hole H using the excavating tool 2 and an excavation volume when providing the excavation hole H; and deriving an elastic wave velocity propagating in the ground using the excavated hole H. The ground property estimation method further extracts a standard excavated volume specific energy and a standard elastic wave velocity that match or approximate the excavated volume specific energy and the elastic wave velocity, and estimates a strength and a crack state of the ground G based on a strength and a crack state of the ground sample that will result in the extracted standard excavation volume specific energy and standard elastic wave velocity.SELECTED DRAWING: Figure 2
【課題】簡易且つ低コストで岩の劣化の状態と亀裂の状態をそれぞれ把握することができる地盤性状推定方法、及び地盤性状推定システムを提案する。【解決手段】地盤性状推定方法は、地盤サンプルにおける基準掘削体積比エネルギー及び基準弾性波速度を把握する工程と、掘削工具２によって推定対象の地盤Ｇに掘削孔Ｈを設ける工程と、掘削工具２が掘削孔Ｈを設ける際に要した掘削エネルギーと掘削孔Ｈを設ける際の掘削体積から掘削体積比エネルギーを導く工程と、掘削孔Ｈを使って地盤を伝播する弾性波速度を導く工程と、掘削体積比エネルギー及び弾性波速度と一致又は近似する基準掘削体積比エネルギー及び基準弾性波速度を抽出し、抽出した基準掘削体積比エネルギー及び基準弾性波速度になる地盤サンプルの強度及び亀裂状態に基づいて地盤Ｇの強度及び亀裂状態を推定する。【選択図】図２
GROUND PROPERTY ESTIMATION METHOD, AND GROUND PROPERTY ESTIMATION SYSTEM
To propose a ground property estimation method and a ground property estimation system that can respectively grasp a state of rock deterioration and a state of cracks easily and inexpensively.SOLUTION: A ground property estimation method includes the steps of: grasping a standard excavation volume specific energy and a standard elastic wave velocity in a ground sample; providing an excavated hole H in a ground G to be estimated using an excavating tool 2; deriving an excavated volume specific energy from an excavation energy required when providing the excavated hole H using the excavating tool 2 and an excavation volume when providing the excavation hole H; and deriving an elastic wave velocity propagating in the ground using the excavated hole H. The ground property estimation method further extracts a standard excavated volume specific energy and a standard elastic wave velocity that match or approximate the excavated volume specific energy and the elastic wave velocity, and estimates a strength and a crack state of the ground G based on a strength and a crack state of the ground sample that will result in the extracted standard excavation volume specific energy and standard elastic wave velocity.SELECTED DRAWING: Figure 2
【課題】簡易且つ低コストで岩の劣化の状態と亀裂の状態をそれぞれ把握することができる地盤性状推定方法、及び地盤性状推定システムを提案する。【解決手段】地盤性状推定方法は、地盤サンプルにおける基準掘削体積比エネルギー及び基準弾性波速度を把握する工程と、掘削工具２によって推定対象の地盤Ｇに掘削孔Ｈを設ける工程と、掘削工具２が掘削孔Ｈを設ける際に要した掘削エネルギーと掘削孔Ｈを設ける際の掘削体積から掘削体積比エネルギーを導く工程と、掘削孔Ｈを使って地盤を伝播する弾性波速度を導く工程と、掘削体積比エネルギー及び弾性波速度と一致又は近似する基準掘削体積比エネルギー及び基準弾性波速度を抽出し、抽出した基準掘削体積比エネルギー及び基準弾性波速度になる地盤サンプルの強度及び亀裂状態に基づいて地盤Ｇの強度及び亀裂状態を推定する。【選択図】図２
GROUND PROPERTY ESTIMATION METHOD, AND GROUND PROPERTY ESTIMATION SYSTEM
地盤性状推定方法、及び地盤性状推定システム
KUBOZUKA DAISUKE (author) / TANAKA SATOYUKI (author) / TAKAYANAGI TAKESHI (author) / FUJIWARA SHOMA (author) / YAMAUCHI MASAYA (author)
2023-11-08
Patent
Electronic Resource
Japanese
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