JPH086281Y2 - Soil sampling device - Google Patents
Soil sampling deviceInfo
- Publication number
- JPH086281Y2 JPH086281Y2 JP1989112142U JP11214289U JPH086281Y2 JP H086281 Y2 JPH086281 Y2 JP H086281Y2 JP 1989112142 U JP1989112142 U JP 1989112142U JP 11214289 U JP11214289 U JP 11214289U JP H086281 Y2 JPH086281 Y2 JP H086281Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- sample storage
- sample
- storage tube
- required length
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Description
本考案は、サンプル収納管を地盤中に圧入し、それに
土質試料、特に礫層または砂礫層の試料を採取する先端
閉塞型の土質試料採取装置の改良に関するものである。The present invention relates to an improvement of a tip-closing type soil sampling device that press-fits a sample storage tube into the ground and collects a soil sample, particularly a sample of a gravel layer or a gravel layer.
この先端閉塞型の土質試料採取装置としては、特開昭
61−175543号公報に記載のものがある。 それは、外管に摺動自在に内装した覆管に吊下したサ
ンプル収納管の下端開口部に、硬質ゴム等の可撓性材に
より管状に形成された栓体を装着していて、当該採取装
置を引き上げる前に、該栓体をその外周面に液圧を加え
て内方に膨出させることにより、その管路をすぼませ、
これによって上記受入試料が不用意に抜脱することのな
いようにしたものである。As a soil sampling device of this closed tip type, Japanese Patent Laid-Open No.
There is one described in Japanese Patent Publication No. 61-175543. It is equipped with a tubular plug made of a flexible material such as hard rubber at the lower end opening of a sample storage tube suspended from a cover tube slidably mounted in an outer tube. Before pulling up the device, liquid pressure is applied to the outer peripheral surface of the plug body to swell it inward, so that the conduit is narrowed,
This prevents the received sample from being accidentally pulled out.
上記栓体は、上端をサンプル収納管の下端に固定する
とともに下端を上記覆管下端に螺合しているシューの内
側先端近くに固定することによって、サンプル収納管の
下端開口部にすなわち該サンプル収納管下端とシューの
先端近傍との間に装着されている。 栓体の上記した内方への膨出は、その上下両端間の胴
部が液圧で伸張せしめられることによって行われるもの
で、そのとき、栓体に引張り応力を生じるが、この引張
り応力は、上記胴部が短くその直径に対する比率が小さ
くなるのにともない増大し、これがある限界に達する
と、栓体自体が破裂し、あるいはまた固定されている上
記上下端が外れてしまうおそれがある。そのため、上記
胴部の長さは、材質によって若干の相違はあるが、内径
の1.5倍程度は必要であることが実験上確かめられてい
る。 しかし、地中で一旦当該採取装置に入った土質試料で
あっても、上記栓体及びシュー内にあるものは、引き上
げ時に脱落したり、あるいは一部回収されたとしてもそ
の部分は不撹乱試料しては役に立たないので、結局、有
効な土質試料はサンプル収納管に受入されたものだけで
ある。 したがって、採取する土質が粘土や砂等一般の場合の
ように、サンプル収納管に受入される試料が十分に長け
ればあまり問題ではないが、何等かの理由でそれが不十
分であるときは、上記栓体の胴部及びシューの部分の長
さはできるだけ短いことが望ましいものである。 サンプリングの対象層が、礫層あるいは砂礫層である
場合、その試料とサンプル収納管の内面との間に生じる
摩擦抵抗が大きいため、サンプル収納管に受入される試
料の長さは、他の土質の場合に比較して短い。特に、試
料にシルトや粘土等の細粒子が全く含まれていないと
き、その傾向が著しく、土質試料採取装置内に収納され
る試料の長さ、すなわち、シューの先端からサンプル収
納管内に受入された試料の上端までの長さはその管の直
径の４倍以下のことが多い。 上記のように、サンプル収納管の下方に位置する栓体
胴部の必要長さは内径の1.5倍程度であるが、これに該
栓体の下端からシューの先端までの長さを加えると、試
料の回収されない長さは該内径の約３倍となる。 当該装置内に一旦入る試料の長さがサンプル収納管の
内径の４倍であるとすると、試料として有効なのはその
内径と同じ長さにすぎず、しかも、その上部は、ボーリ
ング孔底直下の部分であって緩んでいるため不撹乱状態
でない場合が多い。 結局、礫層または砂礫層においては、従来公知の上記
土質試料採取装置によって、有効な役立つものとして採
取できる不撹乱試料は、サンプル収納管の内径よりも短
いものにすぎなかった。 本考案の目的は、栓体に上記の如き引張り応力が作用
しないようにするとともに、該栓体のサンプル収納管下
方に位置する部分の長さを極力短くして、上記従来装置
の諸々の欠点を解消することにある。By fixing the upper end to the lower end of the sample storage tube and fixing the lower end near the inner tip of the shoe screwed to the lower end of the covering tube, the stopper is located at the lower end opening of the sample storage tube, that is, the sample. It is mounted between the lower end of the storage tube and the vicinity of the tip of the shoe. The above-mentioned inward bulging of the plug body is performed by the body part between the upper and lower ends being hydraulically stretched, and at that time, a tensile stress is generated in the plug body, but this tensile stress is As the body portion becomes shorter and its ratio to the diameter becomes smaller, the body portion increases, and when this reaches a certain limit, the plug itself may burst or the fixed upper and lower ends may come off. Therefore, it has been confirmed experimentally that the length of the body portion needs to be about 1.5 times as large as the inner diameter, although there is a slight difference depending on the material. However, even if it is a soil sample that has once entered the sampling device in the ground, if it is inside the plug and shoe, it will fall off when it is pulled up, or even if it is partially recovered, that part is an undisturbed sample. In the end, the only valid soil sample is the one received in the sample storage tube, as it is useless. Therefore, it is not a problem if the sample received in the sample storage tube is long enough, as in the case where the soil to be collected is generally clay or sand, but when it is insufficient for some reason, It is desirable that the length of the body portion and the shoe portion of the plug body be as short as possible. When the layer to be sampled is a gravel layer or a gravel layer, the length of the sample received in the sample storage tube is different from that of other soils because the frictional resistance between the sample and the inner surface of the sample storage tube is large. Short compared to the case. In particular, when the sample does not contain fine particles such as silt or clay at all, this tendency is remarkable, and the length of the sample stored in the soil sampling device, that is, the tip of the shoe receives it into the sample storage tube. The length of the top of the sample is often less than 4 times the diameter of the tube. As described above, the required length of the plug body located below the sample storage tube is about 1.5 times the inner diameter, but if the length from the lower end of the plug to the tip of the shoe is added to this, The uncollected length of the sample is about 3 times the inner diameter. Assuming that the length of the sample once entering the device is four times the inner diameter of the sample storage tube, the effective length of the sample is only the same length as the inner diameter of the sample storage tube, and the upper part of the sample is just below the bottom of the boring hole. In many cases, it is not disturbed because it is loose. After all, in the gravel layer or the gravel layer, the undisturbed sample that can be collected as an effective and useful sample by the above-described conventionally known soil sampling device is only shorter than the inner diameter of the sample storage tube. The object of the present invention is to prevent the above-mentioned tensile stress from acting on the plug body, and to shorten the length of the portion of the plug body located below the sample storage tube as much as possible, thereby making various drawbacks of the conventional device. To solve the problem.
本考案土質試料採取装置の構成は次のとおりである。 下端にビット８を螺着する外管３内に、下端５′ａに
シュー９を螺着する覆管５を支持するとともに、その覆
管５内にサンプル収納管６を、それらの間に環状空間20
を形成させて、しかも、サンプル収納管６の下端を覆管
５の下端５′ａより上方に位置させて支持している。 可撓性材製の管状栓体７が、その上側所要長さ部分7a
を、サンプル収納管６の下端部外周面に密にしかし所要
の力が作用したときには下方に摺動することができる状
態において嵌装し、下側所要長さ部分7bを上記覆管５の
下側部５′に内接させるとともに、管状栓体７の下端を
覆管５の下端５′ａに固定している。 圧力流体を、環状空間20を通じ、覆管５の下側部５′
と管状栓体７の下側所要長さ部分7bとの間に導入するこ
とにより、管状栓体７の下側所要長さ部分7bが、上側所
要長さ部分7aを下方に引き下げながら内方に湾曲し、そ
の湾曲部位以下の試料を下方に押し出してすぼむことに
よりサンプル収納管６の下端開口を閉じるようにしてい
る。The structure of the soil sampling device of the present invention is as follows. The outer tube 3 having the lower end screwed with the bit 8 supports the cover tube 5 with the shoe 9 screwed at the lower end 5'a, and the sample storage tube 6 is provided in the cover tube 5 between them. Space 20
In addition, the lower end of the sample storage tube 6 is positioned above and supported by the lower end 5'a of the covering tube 5. The tubular stopper 7 made of a flexible material has an upper required length portion 7a.
Is tightly fitted to the outer peripheral surface of the lower end portion of the sample storage tube 6 but can slide downward when a required force is applied, and the lower required length portion 7b is placed under the cover tube 5. The lower end of the tubular plug 7 is fixed to the lower end 5'a of the covering pipe 5 while being inscribed in the side portion 5 '. The pressure fluid is passed through the annular space 20 and the lower portion 5'of the covering tube 5 is
And the lower required length portion 7b of the tubular plug body 7 are introduced between the lower required length portion 7b of the tubular stopper body 7 and the upper required length portion 7a. The lower end opening of the sample storage tube 6 is closed by bending the sample and pushing out the sample below the curved portion to the bottom.
本考案装置を対象層所定深さまで押し込み、所要の地
上装置から送給される圧力流体を管状栓体の外周面に作
用させるのにともなって、管状栓体は、サンプル収納管
に嵌装している部分を流体圧力で下方に引き下げながら
内方に湾曲し、その湾曲部位以下の試料を下方に押し出
してすぼむ。 これによって、サンプル収納管の下端開口が閉じ、該
サンプル収納管に受入されている土質試料に対し閉栓状
態となる。したがって、その試料を脱落することなく完
全に地上に回収することができる。By pushing the device of the present invention to a predetermined depth of the target layer and causing the pressure fluid sent from the required ground device to act on the outer peripheral surface of the tubular stopper, the tubular stopper is fitted into the sample storage tube. Bending inward while pulling the existing portion downward with fluid pressure, the sample below the curved portion is pushed downward and recessed. As a result, the lower end opening of the sample storage pipe is closed, and the soil sample received in the sample storage pipe is closed. Therefore, the sample can be completely collected on the ground without dropping off.
以下図示の実施例について詳述する。 ３は上端を外管ヘッド２に螺合した外管で、その下端
にはビット８を螺着している。 １は下端を上記外管ヘッド２に螺合したボーリングロ
ッド、４は外管ヘッド２にボールベアリング16を介し装
架した覆管ヘッド、５は上端を覆管ヘッド４に螺合した
覆管であって、その肉厚の下側部５′の下端５′ａにシ
ュー９を螺着している。 ６はサンプル収納管で、それは、上端を覆管ヘッド４
に螺合することによって覆管５内にそれと同心に装架
し、下端を該覆管５の上記下側部５′の上端に近接させ
ている。換言すると、サンプル収納管６の下端は覆管５
の下端５′ａより上方に位置している。 17は覆管ヘッド４の縦軸線に沿って設けた水抜き孔
で、その上端開口を外管ヘッド２内を水平に貫通してい
る水抜き孔14に連通させ、かつ、該上端開口面に逆止用
バルブ13を乗載させている。 ７は、硬質ゴム，合成樹脂等の可撓性材製であって、
内径をサンプル収納管６の内径と同じにした管状栓体
で、この管状栓体７は、上側約３分の２の長さ部分7a
を、その口径を拡げてサンプル収納管６の下端部外周面
に被せることにより密にしかし下方に引っ張る所要の力
が作用したときには摺動することができる状態において
（その摺動を容易にするためには、サンプル収納管６の
下端部外周面にグリース等の潤滑剤を塗布しておくとよ
いものである）外接させるとともに、下側約３分の１の
長さ部分7bを覆管５の上記肉厚下側部５′に内接させ、
該部分7bの下端7cの内周に断面楔形の固定リング19を嵌
着し、これによって該下端7cを覆管５の下端５′ａに挟
持固定しているものである。 10はボーリングロッド１に沿接した注水ホースで、そ
の先端を外管ヘッド２の上面に設置した注水プラグ12に
接続している。 15は外管ヘッド２及び覆管ヘッド４に連続させて穿設
した通水路で、その上端を上記注水プラグ12に、また下
端を覆管５とサンプル収納管６の間に形成されている環
状空間20に連通させ、地上から注入ホース10により送給
した圧力流体すなわち圧力用水が環状空間20に流入する
ようにしてある。 18は外管ヘッド２に穿設した通水路で、ボーリングロ
ッド１を通じて送給したボーリング用水を外管３と覆管
５の間に形成されている環状空間21に流入させるもので
ある。 なお、11は外管ヘッド２に下端を螺着起立したセジメ
ント管である。 上記構成の本考案装置は、ボーリング孔底まで降ろさ
れた後、ボーリング機により下向の押圧力と回転力を与
えられ、かつ、ボーリングポンプからボーリング用水を
ボーリングロッド１を通じて送給しながら孔底下所定深
さまで押し込まれる（第１図）。 その押し込み中、外管３は回転してビット８で土砂を
削りながら進むが、覆管５は回転することなく当該地中
に押し込まれ、したがって土質試料は撹乱されずにサン
プル収納管６にその下端開口を通じ受入されることにな
るものである。 本考案装置が上記所定深さまで押し込まれたとき、所
要の地上装置から注水ホース10を通じ圧力流体である圧
力用水を送給する。 送給される圧力用水は、通水路15を介して環状空間20
に入るとともに、覆管５の肉厚下側部５′の内面と該内
面に内接している管状栓体７の下側約３分の１の長さ部
分7bの外周面との間の微細空隙にも達し、所要の圧力を
作用させる。 この状態において本考案装置を僅かに引き上げると、
シュー９の内周面に囲繞されている部分の試料は持ち上
げられることなく残るので、該シュー９内が空になり、
それにともなって、管状栓体７の上記部分7bは、上記用
水圧力で部分7aを下方に引き下げながら内方に湾曲し、
その湾曲部位以下の試料を下方に押し出してすぼむこと
になる（第２図）。 これによって、サンプル収納管６の下端開口が閉じ、
該サンプル収納管６に受入されている土質試料に対し閉
栓状態となる。したがって、その試料を脱落することな
く完全に地上に回収することができるものである。 上記において、管状栓体７の上側３分の２の長さ部分
7aは、その口径を拡げてサンプル収納管６の外面に密に
被さっているので、その間に圧力用水が浸入することな
く、しかし、下方に容易に摺動することができるように
してあるから、下側３分の１の長さ部分7bが上記のよう
に内方に湾曲するときに管状栓体７に発生する引張り応
力が小さい。 したがって、サンプル収納管６の下端とシュー９との
間、さらに正確にはサンプル収納管６と固定リング19と
の間の距離が短くても、その部分における管状栓体７に
よる所期の閉栓状態を実現できるものであり、その分だ
け該部分に位置させておかなければならない管状栓体７
の長ささらに具体的には上記部分7bの長さを短く設定で
きるものである。 なお、圧力流体としては、水以外の圧力液体あるいは
気体を使用してもよいこと明らかである。The illustrated embodiment will be described in detail below. An outer pipe 3 has an upper end screwed into the outer pipe head 2, and a bit 8 is screwed to the lower end thereof. Reference numeral 1 is a boring rod whose lower end is screwed into the outer pipe head 2, 4 is a cover pipe head mounted on the outer pipe head 2 through a ball bearing 16, and 5 is a cover pipe whose upper end is screwed into the cover pipe head 4. The shoe 9 is screwed to the lower end 5'a of the lower portion 5'of the wall thickness. 6 is a sample storage tube, which covers the upper end of the tube head 4
It is mounted concentrically within the cover tube 5 by being screwed into it, and the lower end is brought close to the upper end of the lower portion 5'of the cover tube 5. In other words, the lower end of the sample storage tube 6 has the cover tube 5
Is located above the lower end 5'a of the. Reference numeral 17 denotes a water draining hole provided along the longitudinal axis of the covering pipe head 4, the upper end opening of which is communicated with the water draining hole 14 that horizontally penetrates the outer pipe head 2, and the upper end opening surface A check valve 13 is mounted. 7 is made of a flexible material such as hard rubber or synthetic resin,
This is a tubular plug having an inner diameter equal to that of the sample storage tube 6, and this tubular plug 7 has a length 7a of about two-thirds of the upper side.
By expanding its diameter and covering the outer peripheral surface of the lower end portion of the sample storage tube 6 densely but in a state where it can slide when a required force pulling downward is applied (to facilitate the sliding. It is good to apply a lubricant such as grease to the outer peripheral surface of the lower end portion of the sample storage tube 6). Inscribed in the thick lower part 5 ',
A fixing ring 19 having a wedge-shaped cross section is fitted on the inner periphery of the lower end 7c of the portion 7b, and thereby the lower end 7c is clamped and fixed to the lower end 5'a of the covering pipe 5. Reference numeral 10 is a water injection hose arranged along the boring rod 1, and its tip is connected to a water injection plug 12 installed on the upper surface of the outer tube head 2. Reference numeral 15 denotes a water passage which is continuously formed in the outer pipe head 2 and the covering pipe head 4, and has an upper end formed in the water injection plug 12 and a lower end formed between the covering pipe 5 and the sample storage pipe 6. It is made to communicate with the space 20 so that the pressure fluid, that is, the pressure water supplied from the ground by the injection hose 10 flows into the annular space 20. Reference numeral 18 denotes a water passage formed in the outer pipe head 2 for allowing the boring water fed through the boring rod 1 to flow into an annular space 21 formed between the outer pipe 3 and the covering pipe 5. Reference numeral 11 is a segment tube in which the lower end is screwed upright to the outer tube head 2. The device of the present invention having the above-mentioned structure is lowered to the bottom of the boring hole and then given a downward pressing force and a rotational force by the boring machine, and the boring water is fed from the boring pump through the boring rod 1 to the bottom of the hole. It is pushed to the specified depth (Fig. 1). During the pushing, the outer tube 3 rotates and advances while shaving the earth and sand with the bit 8, but the covering tube 5 is pushed into the ground without rotating, and therefore the soil sample is not disturbed in the sample storage tube 6. It is to be received through the lower end opening. When the device of the present invention is pushed to the above-mentioned predetermined depth, pressure water, which is the pressure fluid, is fed from the required ground device through the water injection hose 10. The pressure water to be sent is passed through the water passage 15 to the annular space 20.
In addition, the fine portion between the inner surface of the thick lower portion 5'of the covering tube 5 and the outer peripheral surface of the lower portion 1/3 of the length of the tubular plug body 7 inscribed in the inner surface. It reaches the void and exerts the required pressure. When the device of the present invention is slightly pulled up in this state,
Since the sample of the portion surrounded by the inner peripheral surface of the shoe 9 remains without being lifted, the inside of the shoe 9 becomes empty,
Along with that, the portion 7b of the tubular plug body 7 is curved inward while pulling the portion 7a downward by the water pressure,
The sample below the curved portion will be extruded downward to be recessed (Fig. 2). This closes the lower end opening of the sample storage tube 6,
The soil sample received in the sample storage tube 6 is closed. Therefore, the sample can be completely collected on the ground without dropping off. In the above, the upper two-thirds length of the tubular stopper 7
7a has its diameter enlarged and is tightly covered on the outer surface of the sample storage tube 6, so that pressure water does not enter between them, but it can slide easily downward. The tensile stress generated in the tubular plug body 7 when the length portion 7b of the lower third is curved inward as described above is small. Therefore, even if the distance between the lower end of the sample storage tube 6 and the shoe 9, more accurately, the distance between the sample storage tube 6 and the fixing ring 19 is short, the desired state of the closed state by the tubular plug body 7 at that portion. The tubular plug body 7 that can realize the above, and must be located in that portion accordingly.
More specifically, the length of the portion 7b can be set short. It is obvious that a pressure liquid or gas other than water may be used as the pressure fluid.
以上に詳述したところから明らかなように本考案装置
によれば次の効果を奏する。 すなわち、本考案装置を対象層所定深さまで押し込
み、所要の地上装置から送給される圧力流体を管状栓体
の外周面に作用させるのにともなって、管状栓体は、サ
ンプル収納管に嵌装している部分を流体圧力で下方に引
き下げながら内方に湾曲し、その湾曲部位以下の試料を
下方に押し出してすぼむ。 これによって、サンプル収納管の下端開口が閉じ、該
サンプル収納管に受入されている土質試料に対し閉栓状
態となる。したがって、その試料を脱落することなく完
全に地上に回収することができる。 特に、管状栓体の上側部は、サンプル収納管の外周面
に密に被さっているので、その間に圧力用水が浸入する
ようなことはない。 しかし、上記上側部は下方に容易に摺動することがで
きるので、下側部が内方に湾曲するときにおける引張り
応力が小さく、したがって、サンプル収納管の下端とシ
ューとの間の距離が短くても、その部分における管状栓
体による所期の閉栓状態を実現できるものであり、その
分だけ該部分に位置させておかなければならない管状栓
体の長さを短く設定できるものである。As is clear from the above detailed description, the device of the present invention has the following effects. That is, when the device of the present invention is pushed to a predetermined depth of the target layer and the pressure fluid supplied from the required ground device is applied to the outer peripheral surface of the tubular stopper, the tubular stopper is fitted into the sample storage tube. The curved portion is bent inward while being pulled down by the fluid pressure, and the sample below the curved portion is pushed out and recessed. As a result, the lower end opening of the sample storage pipe is closed, and the soil sample received in the sample storage pipe is closed. Therefore, the sample can be completely collected on the ground without dropping off. In particular, since the upper portion of the tubular plug is tightly covered with the outer peripheral surface of the sample storage tube, the pressure water does not enter between them. However, since the upper portion can easily slide downward, the tensile stress when the lower portion bends inward is small, and therefore the distance between the lower end of the sample storage tube and the shoe is short. However, it is possible to realize the desired closed state by the tubular plug body in that portion, and the length of the tubular plug body that must be located in that portion can be set shorter by that amount.
図面は本考案の実施例を示すもので、第１図はボーリン
グ孔底所定深さまで押し込まれ土質試料をサンプル収納
管に受入した状態の縦断面図、第２図は管状栓体を流体
圧力で内方に湾曲しサンプル収納管の下端開口を閉塞し
た状態の縦断面図である。 ３……外管、５……覆管、５′……下側部、５′ａ……
下端、６……サンプル収納管、７……管状栓体、7a……
上側所要長さ部分、7b……下側所要長さ部分、８……ビ
ット、９……シュー、20……環状空間。FIG. 1 shows an embodiment of the present invention. FIG. 1 is a longitudinal sectional view showing a state in which a soil sample is pushed into a bottom of a boring hole to a predetermined depth and a sample storage tube is received, and FIG. It is a longitudinal cross-sectional view of a state in which the sample storage tube is curved inward and the lower end opening of the sample storage tube is closed. 3 ... Outer tube, 5 ... Covered tube, 5 '... Lower part, 5'a ...
Lower end, 6 ... Sample storage tube, 7 ... Tubular plug, 7a ...
Upper required length part, 7b ... Lower required length part, 8 ... Bit, 9 ... Shoe, 20 ... Annular space.
───────────────────────────────────────────────────── フロントページの続き (72)考案者 鈴木 英也 愛知県名古屋市港区稲永１丁目３番Ｈ― 306 (72)考案者 渋谷 旬 愛知県春日井市中央台４―１―２ (72)考案者 沓沢 貞雄 千葉県千葉市小中台町1396 西小中台団地 24―401 (72)考案者 唐沢 優 東京都昭島市中神町1366―66 (56)参考文献 特開 昭51−9001（ＪＰ，Ａ) 特公 昭42−3922（ＪＰ，Ｂ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hideya Suzuki Hideya Suzuki 1-3-3 Inaei, Minato-ku, Nagoya, Aichi H-306 (72) Shun Shibuya 4-1-2 Chuodai, Kasugai-shi, Aichi (72) Inventor Sadao Kasuzawa 1396 Konakadai Town, Chiba City, Chiba Prefecture 24-401 (72) Inventor Yu Karasawa 1366-66 Nakagami Town, Akishima City, Tokyo (56) , A) Japanese Patent Publication No. 42-3922 (JP, B1)
Claims (1)
下端にシューを螺着する覆管を支持するとともに、その
覆管内にサンプル収納管を、それらの間に環状空間を形
成させて、しかも、サンプル収納管の下端を覆管の下端
より上方に位置させて支持していること、 可撓性材製の管状栓体が、上側所要長さ部分を、上記サ
ンプル収納管の下端部外周面に密にしかし所要の力が作
用したときには下方に摺動することができる状態におい
て嵌装し、下側所要長さ部分を上記覆管の下側部に内接
させるとともに、該管状栓体の下端を該覆管の下端に固
定していること、 圧力流体を、上記環状空間を通じ、覆管の下側部と管状
栓体の下側所要長さ部分との間に導入することにより、
該管状栓体の下側所要長さ部分が、上側所要長さ部分を
下方に引き下げながら内方に湾曲し、その湾曲部位以下
の試料を下方に押し出してすぼむことにより上記サンプ
ル収納管の下端開口を閉じるようにしてなること、 を特徴とする土質試料採取装置。1. An outer tube having a lower end to which a bit is screwed is supported by a cover tube having a lower end to which a shoe is also screwed, and a sample storage tube is formed in the cover tube to form an annular space therebetween. In addition, the lower end of the sample storage tube is positioned and supported above the lower end of the covering tube, and the tubular stopper made of a flexible material has the upper required length portion at the lower end portion of the sample storage tube. The outer peripheral surface is fitted tightly but in a state where it can slide downward when a required force is applied, the lower required length portion is inscribed in the lower portion of the covering pipe, and the tubular plug is By fixing the lower end of the body to the lower end of the covering pipe, by introducing pressure fluid through the annular space between the lower part of the covering pipe and the lower required length part of the tubular stopper. ,
The lower required length portion of the tubular stopper bends inward while pulling down the upper required length portion, and the sample below the curved portion is pushed downward to be recessed, whereby the sample storage tube A soil sampling device characterized in that the lower end opening is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989112142U JPH086281Y2 (en) | 1989-09-27 | 1989-09-27 | Soil sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989112142U JPH086281Y2 (en) | 1989-09-27 | 1989-09-27 | Soil sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0351350U JPH0351350U (en) | 1991-05-20 |
| JPH086281Y2 true JPH086281Y2 (en) | 1996-02-21 |
Family
ID=31660594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989112142U Expired - Lifetime JPH086281Y2 (en) | 1989-09-27 | 1989-09-27 | Soil sampling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086281Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100330586B1 (en) * | 1999-07-28 | 2002-03-29 | 조중제 | Undisturbed sampling apparatus, penetrability test apparatus and penetrability test method |
| JP5458240B2 (en) * | 2010-01-28 | 2014-04-02 | 公益財団法人日本下水道新技術機構 | Drainage pipe mounting device in underground structure floating prevention structure and drainage pipe mounting method using this device |
| CN102735499B (en) * | 2012-07-19 | 2014-07-16 | 哈尔滨工业大学 | Double-layer composite soft-bag internal-flanging and external-wrapping core taking mechanism and drilling and sampling method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS519001A (en) * | 1974-07-12 | 1976-01-24 | Upuraburenie Georogii Soeta Mi | DOJOSAN PURINGUSOCHI |
-
1989
- 1989-09-27 JP JP1989112142U patent/JPH086281Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0351350U (en) | 1991-05-20 |
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