A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
GROUND SAMPLING DEVICE AND GROUND SAMPLING METHOD
PROBLEM TO BE SOLVED: To provide a ground sampling device and a ground sampling method capable of sampling three phases of solid, liquid and gas phases from underground in almost natural state mainly at a ground examined for liquefaction.SOLUTION: A ground sampling device collects a ground sample into a sample storage pipe by lowering the sample storage pipe in the axial direction to a bottom of a borehole drilled in a ground. the ground sampling device comprises: a sampler head installed on a tip of a rod; a square penetration pipe with an upper end that is fixed or slidably fixed to the sampler head; a shoe with an external taper fixed to a lower end of the penetration pipe; the sample storage pipe, which has a lower end fixed to the shoe and is disposed with a clearance between the sample storage pipe and an inner wall face of the penetration pipe; thin plate shutters, which are disposed at a clearance between the inner wall face of the penetration pipe and the sample storage pipe, and can seal a ground sample inserted in the sample storage pipe by unevenly protruding from the shoe inner wall face during actuation; and liquid discharge means, which can discharge a liquid in the sample storage pipe.SELECTED DRAWING: Figure 1
【課題】 本発明は主として液状化検討地盤を対象とし、地中から固・液・気の三相を原地盤に近い状態で試料として採取できる地盤試料採取装置および地盤試料採取方法を得るにある。【解決手段】 地盤に穿設したボーリング孔底に試料収納管をその軸方向に降下させて該試料収納管内に地盤試料を採取する地盤試料採取装置において、ロッドの先端部に取付けられたサンプラーヘッドと、このサンプラーヘッドに上端部が固定あるいはスライド移動可能に取付けられた四角管状の貫入管と、該貫入管の下端部に固定された外テーパを有するシューと、該シューに下端部が固定され、前記貫入管の内壁面との間に隙間を介して設けられた試料収納管と、前記貫入管の内壁面と試料収納管との間の隙間に設けられ、作動時には前記シュー内壁面から段違いに複数枚突出し、前記試料収納管内に挿入された地盤試料を密閉できる薄板シャッターと、前記試料収納管内部の液体を排出できる液体排出手段とで地盤試料採取装置を構成している。【選択図】 図１
GROUND SAMPLING DEVICE AND GROUND SAMPLING METHOD
PROBLEM TO BE SOLVED: To provide a ground sampling device and a ground sampling method capable of sampling three phases of solid, liquid and gas phases from underground in almost natural state mainly at a ground examined for liquefaction.SOLUTION: A ground sampling device collects a ground sample into a sample storage pipe by lowering the sample storage pipe in the axial direction to a bottom of a borehole drilled in a ground. the ground sampling device comprises: a sampler head installed on a tip of a rod; a square penetration pipe with an upper end that is fixed or slidably fixed to the sampler head; a shoe with an external taper fixed to a lower end of the penetration pipe; the sample storage pipe, which has a lower end fixed to the shoe and is disposed with a clearance between the sample storage pipe and an inner wall face of the penetration pipe; thin plate shutters, which are disposed at a clearance between the inner wall face of the penetration pipe and the sample storage pipe, and can seal a ground sample inserted in the sample storage pipe by unevenly protruding from the shoe inner wall face during actuation; and liquid discharge means, which can discharge a liquid in the sample storage pipe.SELECTED DRAWING: Figure 1
【課題】 本発明は主として液状化検討地盤を対象とし、地中から固・液・気の三相を原地盤に近い状態で試料として採取できる地盤試料採取装置および地盤試料採取方法を得るにある。【解決手段】 地盤に穿設したボーリング孔底に試料収納管をその軸方向に降下させて該試料収納管内に地盤試料を採取する地盤試料採取装置において、ロッドの先端部に取付けられたサンプラーヘッドと、このサンプラーヘッドに上端部が固定あるいはスライド移動可能に取付けられた四角管状の貫入管と、該貫入管の下端部に固定された外テーパを有するシューと、該シューに下端部が固定され、前記貫入管の内壁面との間に隙間を介して設けられた試料収納管と、前記貫入管の内壁面と試料収納管との間の隙間に設けられ、作動時には前記シュー内壁面から段違いに複数枚突出し、前記試料収納管内に挿入された地盤試料を密閉できる薄板シャッターと、前記試料収納管内部の液体を排出できる液体排出手段とで地盤試料採取装置を構成している。【選択図】 図１
GROUND SAMPLING DEVICE AND GROUND SAMPLING METHOD
地盤試料採取装置および地盤試料採取方法
SAKAI KAZUO (author) / TACHIKAWA HIDEO (author) / YUKAWA YOSHINORI (author) / OKUZAWA TAIZO (author)
2016-05-26
Patent
Electronic Resource
Japanese
GROUND SAMPLE SAMPLING METHOD, AND GROUND SAMPLE SAMPLING DEVICE
| European Patent Office | 2021