JPH0455589A - Sampler for soil test specimen - Google Patents
Sampler for soil test specimenInfo
- Publication number
- JPH0455589A JPH0455589A JP16484290A JP16484290A JPH0455589A JP H0455589 A JPH0455589 A JP H0455589A JP 16484290 A JP16484290 A JP 16484290A JP 16484290 A JP16484290 A JP 16484290A JP H0455589 A JPH0455589 A JP H0455589A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- inner tube
- tube
- soil
- outer tube
- 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.)
- Granted
Links
- 239000002689 soil Substances 0.000 title claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000005553 drilling Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 4
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、地質−調査を目的として行なわれる土質試料
採取時に使用される土質試料採取用サンプラーに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sampler for collecting soil samples for use in collecting soil samples for the purpose of geological investigation.
この種の土質試料採取用サンプラーはメタル・クラウン
を先端に有する外管内に非回転の内管を配置した構造か
らなり、ポーリング・ロッドを介して外管を回転させつ
つ土中に押込むことによって内管内に土質試料を採取す
る方法が公知である（例えば、特公昭６３−２６２４０
号公報参照）。This type of soil sampler has a structure in which a non-rotating inner tube is placed inside an outer tube with a metal crown at the tip.The outer tube is rotated and pushed into the soil via a polling rod. There are known methods for collecting soil samples in the inner pipe (for example, Japanese Patent Publication No. 63-26240).
(see publication).
上記方法によって内管（３０）内に採取収納した試料は
、外管（３１）と共に地上に引き上げられる。通常内管
（３０）内は直径が一様になったストレートな内面で構
成されており、上記引き上げ時に内管（３０）内の試料
が内管の下端から脱落する恐れがあった。そこで従来は
、第４図に示すように、内管（３０）内の下部に開環状
のコア・キャッチャ（３２）を装備している。The sample collected and stored in the inner tube (30) by the above method is lifted to the ground together with the outer tube (31). Normally, the inside of the inner tube (30) is composed of a straight inner surface with a uniform diameter, and there is a risk that the sample inside the inner tube (30) may fall off from the lower end of the inner tube during the above-mentioned lifting. Therefore, conventionally, as shown in FIG. 4, an open ring-shaped core catcher (32) is provided at the lower part of the inner tube (30).
このコア・キャッチャ（３２）は、内径面がストレート
で、外径面が先細円錐形をなし、内管（３０）内に採取
した試料が脱落しようとするとき、試料（３３）と共に
コア・キャッチャ（３２）が内管（３０）内を下方に移
動し、外径面の先細円錐形状によって縮径し、試料（３
３）を把持してその脱落を防止するものである。This core catcher (32) has a straight inner diameter surface and a tapered conical outer diameter surface, and when the sample collected in the inner tube (30) is about to fall out, it will catch the core catcher together with the sample (33). (32) moves downward inside the inner tube (30) and is reduced in diameter by the tapered conical shape of the outer diameter surface, and the sample (3
3) to prevent it from falling off.
上記コア・キャッチャを装備した内管で試料を採取する
場合、試料は、コア・キャッチャのストレートな内面を
通して内管内へ進入することになり、抵抗が太き（なる
欠点があった。When a sample is collected using an inner tube equipped with the above-mentioned core catcher, the sample enters the inner tube through the straight inner surface of the core catcher, resulting in a large resistance.
特に試料は、地中にある間は圧縮状態であり、内管内へ
進入すると、周囲からの圧縮応力が解放されて膨張する
傾向があり、従来のようにコア・キャッチャのストレー
トな内面を通じて内管内に試料を採取収納する場合では
、上記応力解放が妨げられ、内管と採取試料との間の摩
擦抵抗が増大し、目標深さまで掘進並びに試料採取する
ことができない場合があった。In particular, the sample is in a compressed state while it is underground, and when it enters the inner tube, the compressive stress from the surroundings is released and it tends to expand. When collecting and storing a sample, the above-mentioned stress release is hindered and the frictional resistance between the inner tube and the sample to be collected increases, making it impossible to excavate to the target depth and collect the sample.
本発明は掘進時、内管内での採取試料の応力解放をスム
ーズにして試料と内管との摩擦抵抗を軽減し、目標深さ
までの掘進並びに試料採取を確実に行わせ、しかも引き
上げ時において採取試料の脱落を防止し得る土質試料採
取用サンプラーを提供することを目的としている。The present invention smoothes the stress release of the collected sample within the inner tube during excavation, reduces the frictional resistance between the sample and the inner tube, ensures that the excavation to the target depth and sample collection are carried out, and that the sample is collected during pulling up. The object of the present invention is to provide a sampler for collecting soil samples that can prevent samples from falling off.
上記目的を達成するため、本発明は、先端に削孔用メタ
ル・クラウンを有し、ポーリング・ロッドを介して回転
駆動されつつ土中に押込まれる外管と、上記外管内に装
着され、外管の土中への押込みに関連して土質試料を採
取する内管とを有する土質試料採取用サンプラーにおい
て、内管の下部内面を下方に向けて縮径するテーパー形
状としたことを特徴とする土質試料採取用サンプラーを
提供するものである。In order to achieve the above object, the present invention has an outer tube having a metal crown for drilling at the tip and being driven into the soil while being rotationally driven via a polling rod; A sampler for soil sample collection having an inner tube for collecting a soil sample by pushing the outer tube into the soil, characterized in that the lower inner surface of the inner tube has a tapered shape that decreases in diameter downward. The present invention provides a sampler for collecting soil samples.
内管の下部内面は、下方に向けて縮径するテーパー形状
であるため、掘進時、内管内に採取収納される試料は、
内管の下端から進入する際、内管のテーパ一部分で内径
が徐々に大きくなり、応力解放がスムーズに行われる。The inner surface of the lower part of the inner tube has a tapered shape that decreases in diameter toward the bottom, so during excavation, the sample collected and stored inside the inner tube is
When entering from the lower end of the inner tube, the inner diameter gradually increases at a tapered portion of the inner tube, and stress is released smoothly.
また試料の引き上げ時、内管内の試料が脱落しようとす
ると、内管の内面が下方に向けて縮径するテーパー形状
であるため、下方へ移動するほど縮径力を受けて締め固
められ、脱落が防止される。Additionally, if the sample inside the inner tube tries to fall off when the sample is pulled up, since the inner surface of the inner tube has a tapered shape that reduces the diameter downward, the further it moves downward, the more compacted it is by the force of the diameter reduction, causing it to fall off. is prevented.
本実施例では本出願人提案（特公昭６３−２６２４０号
参照）の削孔水吐出口く５）、及び削孔水遮断用バンキ
ング（４）を具備するメタル・クラウン（３）を使用し
ている。このメタル・クラウン（３）はその下端周縁に
固着されたメタル・クラウン刃先（６）の上部に前記削
孔水吐出口く５）を複数開口させるとともに、この削孔
水吐出口（５）の下方に位置する前記メタル・クラウン
（３）の内周面に、内管（１）の下端外周面と密着する
削孔水遮断用バッキング（４）を固着したものであり、
外管（２）にネジ止め等の方法で取着されている。この
メタル・クラウン（３）を装着した土質試料サンプラー
は、循環泥水による試料の流出あるいは試料への循環泥
水の浸透を防止するとともに空振に起因する試料の変質
を効果的に回避している。In this example, a metal crown (3) equipped with a drilling water discharge port 5) proposed by the present applicant (see Japanese Patent Publication No. 63-26240) and a banking (4) for blocking drilling water is used. There is. This metal crown (3) has a plurality of drilling water discharge ports 5) opened in the upper part of the metal crown cutting edge (6) fixed to its lower peripheral edge, and the drilling water discharge ports (5). A drilling water blocking backing (4) that is in close contact with the outer circumferential surface of the lower end of the inner pipe (1) is fixed to the inner circumferential surface of the metal crown (3) located below,
It is attached to the outer tube (2) by a method such as screwing. A soil sampler equipped with this metal crown (3) prevents the sample from flowing out or penetrating the sample due to circulating muddy water, and effectively avoids deterioration of the sample due to air vibration.
第１図に本実施例の基本概念を示す、参照番号（２）は
ポーリンブロンド（１２）を介して回転駆動されつつ土
中に押込まれる外管であり、この外管（２）内に装着さ
れ、外管（２）の土中への押込みよって土質試料を採取
収納する非回転の内管（１）は、下部内面を下方に向け
て縮径するテーパーを形成している。一般に試料は地中
に存在する間は、周囲からの圧力により圧縮状態にある
が、試料が内管内に取り込まれると、周囲の圧縮応力か
ら解放されるため、試料に蓄えられた内部エネルギが発
散して体積が膨張する傾向にある。したがってこの試料
の体積膨張を吸収するが如く内管（１）の径を拡大する
することにより、試料と内管内との摩擦抵抗を軽減する
ことが可能となる、また内管（１）の下端部を縮径した
ことにより、試料は下方へ移動するほど縮径力を受けて
締め固められ、引き上げ時の試料の脱落を防止すること
も可能となる。FIG. 1 shows the basic concept of this embodiment. Reference number (2) is an outer tube that is pushed into the soil while being rotationally driven via a Pauline blond (12). The attached non-rotating inner tube (1), which collects and stores soil samples by pushing the outer tube (2) into the soil, has a lower inner surface tapered downward in diameter. Generally, while a sample is underground, it is in a compressed state due to the pressure from the surroundings, but when the sample is taken into the inner tube, it is released from the surrounding compressive stress, and the internal energy stored in the sample is released. The volume tends to expand. Therefore, by enlarging the diameter of the inner tube (1) to absorb this volumetric expansion of the sample, it becomes possible to reduce the frictional resistance between the sample and the inside of the inner tube, and the lower end of the inner tube (1) By reducing the diameter of the section, the sample is compacted by the force of reducing the diameter as it moves downward, and it is also possible to prevent the sample from falling off when being pulled up.
また上述した内管内テーパ一部外周に環状隙間（８）を
形成し、この環状隙間（８）に長筒状のビニール袋（７
）を折畳み状態で収納した実施例を第２図に示す、すな
わちこのビニール袋（７）の一端開口部をピストン本体
（９）下部にボルト（１５）等で固着した保持板（１０
）に取り付けて封止状態にし、他端開口部を前記環状隙
間（８）底部に固着し、長筒の余剰部を前記環状隙間（
８）内に折畳み状態でしまい込んだことを特徴としてい
る。試料が内管内に採取収納されるにつれてピストン本
体（９）及びこれに固着された保持板（１０）が上方へ
移動し、これにしたがって環状隙間内のビニール袋（７
）が漸次引き出されて長筒状となり内部に試料を充填し
ていく。この結果試料はビニール袋（７）に被包される
形となり、試料と内管内周壁との摩擦がより軽減されて
試料の内管内への進入抵抗をより軽減することができる
。In addition, an annular gap (8) is formed on a part of the outer periphery of the taper in the inner tube, and a long cylindrical plastic bag (7) is formed in this annular gap (8).
) is stored in a folded state, as shown in FIG.
) to seal it, the other end opening is fixed to the bottom of the annular gap (8), and the excess part of the long tube is attached to the annular gap (8).
8) It is characterized by being stored in a folded state. As the sample is collected and stored in the inner tube, the piston body (9) and the holding plate (10) fixed thereto move upward, and accordingly the plastic bag (7) in the annular gap moves upward.
) is gradually pulled out to form a long cylinder and the sample is filled inside. As a result, the sample is wrapped in the plastic bag (7), and the friction between the sample and the inner peripheral wall of the inner tube is further reduced, making it possible to further reduce the resistance of the sample to enter the inner tube.
なお、この際内管テーパ一部分の軸方向長さに対する縮
径比の異なるものを数種準備し、採取地質によって適当
なものを選択して使用することも可能である。At this time, it is also possible to prepare several types with different diameter reduction ratios to the axial length of a portion of the tapered part of the inner tube, and select and use the appropriate one depending on the sampling geology.
第３図に本発明の操作方法を示す。外管（２）はポーリ
ング・ロッド（１２）を介してポーリング・マシン（２
６）に接続され、回転速度ならびに沈降速度を制御され
ている。ポーリング・ロッド（１２）の上端にウォータ
ー・スイベル（２１）をネジ止めし、このウォーター・
スイベル（２１）ならびにポーリング・ロッド（１２）
を貫通してピストン・ロッド（１３）が下方に延び、そ
の下端にピストン・バッキング（１１）を介して内管（
１）と係合するピストン本体（９）をネジ止めしている
。FIG. 3 shows the operating method of the present invention. The outer tube (2) is connected to the polling machine (2) via the polling rod (12).
6), and the rotation speed and sedimentation speed are controlled. Screw the water swivel (21) onto the upper end of the polling rod (12), and
Swivel (21) and polling rod (12)
A piston rod (13) extends downward through the piston rod (13), and an inner tube (
1), the piston body (9) that engages with the piston body (9) is screwed.
またこのピストン・ロッド（１３）の上端は、チェーン
またはターンバックル等のピストン・口・２ド固定具（
２０）を介して三脚やぐら（１９）に固定されている。In addition, the upper end of this piston rod (13) is attached to a piston, mouth, two-way fixing device such as a chain or a turnbuckle (
20) is fixed to the tripod tower (19).
ピストン・ロッド（１３）ならびにピストン本体（９）
はサンプラー（Ｓ）が所定の深度に沈降した後、サンプ
リング時における外管（２）の回転から遮断され、かつ
上下動のない試料採取位置を試料収納室（１８）に与え
ている。循環泥水は、ポンプ（２２）によってサンプラ
ー（Ｓ）内に供給される。即ち循環泥水はデリベリ−・
ホース（２３） 、ウォーター・スイベル（２１）を経
てポーリング・ロッド（１２）とピストン・口７ド（１
３）の間に形成された流路（１４）を流下してメタル・
クラウン（３）に到達し、削孔水吐出孔（５）からポー
リング孔（２４）内に排出される。掘進により発生した
削り屑は、循環泥水とともに泥水バッグ（２５）に送ら
れ、この泥水バッグ（２５）で削り屑を分離された循環
泥水は、再びポンプ（２２）に供給して再使用する。Piston rod (13) and piston body (9)
After the sampler (S) has descended to a predetermined depth, the sample storage chamber (18) is isolated from the rotation of the outer tube (2) during sampling and provides a sample collection position with no vertical movement. Circulating mud water is supplied into the sampler (S) by a pump (22). In other words, the circulating mud water is delivered.
Hose (23), water swivel (21) to polling rod (12) and piston port (1)
The metal flows down the flow path (14) formed between 3) and
The water reaches the crown (3) and is discharged from the drilling water discharge hole (5) into the poling hole (24). The shavings generated by excavation are sent to a mud bag (25) together with the circulating mud, and the circulating mud from which the shavings have been separated in the mud bag (25) is again supplied to the pump (22) for reuse.
内管内に採取収納される試料は内管のテーパー部分で、
内径が徐々に太き（なるため、応力解放がスムーズに行
われ、内管と試料との摩擦抵抗が軽減する。このため迅
速な採取作業と省エネルギー化を同時に達成することが
可能となる。The sample is collected and stored in the inner tube at the tapered part of the inner tube.
As the inner diameter gradually increases, stress is released smoothly and the frictional resistance between the inner tube and the sample is reduced. This makes it possible to achieve rapid collection operations and energy savings at the same time.
また採取した試料が下方に移動するほど内管内径が縮少
するため、縮径力を受けて締め固められ、引き上げ時の
試料の脱落も確実に防止され、より確実で、能率的な試
料採取作業が可能となる。In addition, as the collected sample moves downward, the inner diameter of the inner tube decreases, so it is compacted by the force of diameter reduction, and the sample is reliably prevented from falling off when pulled up, allowing for more reliable and efficient sample collection. Work becomes possible.
第１図は本発明の基本概念を示す断面図、第２図は他の
実施例を示す断面図、第３図は本発明の操作要領を示す
要部断面図、第４図は従来装置の断面図である。
（１）・・−内管、 （２）・−・外管、（３）−
・・メタル・クラウン。
第１図
第２図Fig. 1 is a sectional view showing the basic concept of the present invention, Fig. 2 is a sectional view showing another embodiment, Fig. 3 is a sectional view of essential parts showing the operation procedure of the invention, and Fig. 4 is a sectional view of the conventional device. FIG. (1)...-inner tube, (2)...outer tube, (3)-
...Metal crown. Figure 1 Figure 2
Claims (1)
ッドを介して回転駆動されつつ土中に押込まれる外管と
、上記外管内に装着され、外管の土中への押込みに関連
して土質試料を採取する内管とを有する土質試料採取用
サンプラーにおいて、上記内管の下部内面を下方に向け
て縮径するテーパー形状としたことを特徴とする土質試
料採取用サンプラー。An outer tube that has a metal crown for drilling holes at the tip and is pushed into the soil while being rotationally driven via a polling rod, and an outer tube that is attached to the outer tube and is related to pushing the outer tube into the soil. What is claimed is: 1. A soil sampler having an inner tube for collecting a soil sample, characterized in that a lower inner surface of the inner tube has a tapered shape that decreases in diameter downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164842A JP2759174B2 (en) | 1990-06-21 | 1990-06-21 | Soil sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164842A JP2759174B2 (en) | 1990-06-21 | 1990-06-21 | Soil sampler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0455589A true JPH0455589A (en) | 1992-02-24 |
| JP2759174B2 JP2759174B2 (en) | 1998-05-28 |
Family
ID=15800959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2164842A Expired - Fee Related JP2759174B2 (en) | 1990-06-21 | 1990-06-21 | Soil sampler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2759174B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063909A (en) * | 2005-09-01 | 2007-03-15 | Techno Earth Corp | Geological sample collecting device and waste collecting method used for the same |
| CN116296556A (en) * | 2023-05-06 | 2023-06-23 | 中国地质大学（北京） | Open pit mine ecological geological environment exploration sampling device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5442701U (en) * | 1977-08-31 | 1979-03-23 | ||
| JPS6326240A (en) * | 1986-07-16 | 1988-02-03 | Nippon Kokan Kk <Nkk> | Strip caster |
-
1990
- 1990-06-21 JP JP2164842A patent/JP2759174B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5442701U (en) * | 1977-08-31 | 1979-03-23 | ||
| JPS6326240A (en) * | 1986-07-16 | 1988-02-03 | Nippon Kokan Kk <Nkk> | Strip caster |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007063909A (en) * | 2005-09-01 | 2007-03-15 | Techno Earth Corp | Geological sample collecting device and waste collecting method used for the same |
| CN116296556A (en) * | 2023-05-06 | 2023-06-23 | 中国地质大学（北京） | Open pit mine ecological geological environment exploration sampling device |
| CN116296556B (en) * | 2023-05-06 | 2023-12-22 | 中国地质大学（北京） | Open pit mine ecological geological environment exploration sampling device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2759174B2 (en) | 1998-05-28 |
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