JPH0533965Y2 - - Google Patents
Info
- Publication number
- JPH0533965Y2 JPH0533965Y2 JP12949287U JP12949287U JPH0533965Y2 JP H0533965 Y2 JPH0533965 Y2 JP H0533965Y2 JP 12949287 U JP12949287 U JP 12949287U JP 12949287 U JP12949287 U JP 12949287U JP H0533965 Y2 JPH0533965 Y2 JP H0533965Y2
- Authority
- JP
- Japan
- Prior art keywords
- water
- inner cylinder
- hole
- cylinder
- permeability
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 230000035699 permeability Effects 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000691 measurement method Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 8
- 230000008595 infiltration Effects 0.000 description 6
- 238000001764 infiltration Methods 0.000 description 6
- 239000012466 permeate Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005180 public health Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007903 penetration ability Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- -1 pretreatment method Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、裸地を利用した排水の浸透処理を計
画する場合に行なう浸透能測定に用いて好適な装
置の改良に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement of a device suitable for use in measuring infiltration capacity when planning infiltration treatment of wastewater using bare ground.
排水（汚水）を土壌に浸透させて処理する浸透
処理に於ける排水の負荷量は、排水の水質、前処
理法、土壌処理方式、土壌の種類と性質等によつ
て定められるが、一番基本になるのが土壌の浸透
能である。
The load amount of wastewater in infiltration treatment, which treats wastewater (sewage) by permeating it into the soil, is determined by the quality of the wastewater, pretreatment method, soil treatment method, type and nature of soil, etc. The basic factor is the permeability of the soil.
従つて、土壌浸透処理計画の遂行に当つて最初
に必要とするのは浸透能の測定であつて、この測
定結果を土台にして排水の負荷水量が決定される
のであるが、この浸透能測定に用いる代表的な測
定法として、二重金属輪を用いた洪水型測定法
と、特に下水処理計画用等に用いるアメリカ合衆
国公衆衛生局の標準測定法が存在する。 Therefore, when carrying out a soil infiltration treatment plan, the first thing that is required is to measure the infiltration capacity, and the amount of wastewater load is determined based on this measurement result. Typical measurement methods used for this purpose include the flood-type measurement method using a double metal ring and the United States Public Health Service's standard measurement method, which is used especially for sewage treatment planning.
しかし、上記２つの測定法を実施した場合に、
両者の間には測定値に非常に大きな差があつて、
後者は前者の７倍以上に達する場合がある。ま
た、前者の装置を用いた測定法の場合は、他の測
定値に比して大きな値をとる傾向があり、加え
て、前者の二重金属輪を用いた測定法の場合は、
実行上装置と操作が大仕掛けと成つて、特に小型
浄化槽トレンチ方式等には不向きであり、また、
アメリカ合衆国公衆衛生局及びそれに準じた日本
の標準測定法は、水理学的に見て未だ検討の余地
が充分に存在し、信頼性に欠ける問題があつた。 However, when carrying out the above two measurement methods,
There is a very large difference in the measured values between the two,
The latter can reach more than seven times the former. In addition, in the case of the former measurement method using the device, the value tends to be larger than other measurement values, and in addition, in the case of the former measurement method using the double metal ring,
In terms of practical equipment and operation, it is a big gimmick, making it particularly unsuitable for small septic tank trench systems, etc.
The United States Public Health Service's standard measurement method and its equivalent Japanese standard measurement method still have a lot of room for investigation from a hydraulic perspective, and there are problems with their lack of reliability.
そこで本出願人等は、操作の簡易化と水理学的
解明の単純化を図るものとして、新たに第４図に
示した二重円筒体を用いた測定法を開発した。 Therefore, the present applicant and others developed a new measurement method using a double cylinder shown in FIG. 4 in order to simplify the operation and the hydraulic analysis.
この測定法を実行する装置は、第４図の如く内
外二重の筒体Ａ，Ｂより成り、裸地のに掘つた内
外２段の穴Ｃ，Ｄ内に上記内外の筒体Ａ，Ｂを
夫々図示の状態に嵌込んだ構成であつて、内外の
筒体Ａ，Ｂ内に夫々水Ｗを満たして浸透能を測定
し、最終浸透能に到達した時に、両筒体Ａ，Ｂ内
に底面から10cm高さに再び水Ｗを張り、内筒体Ａ
の水位が2.5cm低下するに要する時間を測定し、
これから浸透速度mm／時を計算する仕組に成つて
いる。 The apparatus for carrying out this measurement method consists of double inner and outer cylinders A and B as shown in Fig. 4, and the inner and outer cylinders A and B The structure is such that the inner and outer cylinders A and B are respectively filled with water W and the permeability is measured, and when the final permeability is reached, the inner and outer cylinders A and B are filled with water W. Apply water W again to a height of 10 cm from the bottom of the inner cylinder body A.
Measure the time required for the water level to fall by 2.5 cm,
From this, the penetration rate in mm/hour is calculated.
しかし、上述した構成の測定装置の場合、特に
内筒体Ａ内に張つた水Ｗは、穴Ｃの内底部全面に
わたつて均一に浸透せずに、穴Ｃの中央部よりも
周辺部の方が嵌込まれた内筒体Ａの壁面に沿つて
矢印Ｘ方向に浸透が促進される関係で、全体が図
示したWaの如く略アーチ形状に浸透されてしま
い、浸透能の測定、特に、浸透速度の計算に影響
を与えて、正しい測定値を得られない問題があつ
た。
However, in the case of the measuring device having the above-mentioned configuration, the water W in particular in the inner cylinder A does not permeate uniformly over the entire inner bottom of the hole C, and the water W does not permeate uniformly over the entire inner bottom of the hole C. Since penetration is promoted in the direction of the arrow X along the wall surface of the inner cylinder A into which the inner cylinder A is fitted, the whole body is penetrated in an approximately arch shape as shown in the figure Wa, and it is difficult to measure the penetration ability, especially. There was an issue that affected the calculation of penetration rate, preventing correct measurements from being obtained.
従つて本考案の技術的課題は、内筒体内に張つ
た水を全体的に均一に浸透させて、正確な浸透能
測定を行なえる様にすることにある。 Therefore, the technical problem of the present invention is to allow the water in the inner cylinder to penetrate uniformly throughout the interior of the inner cylinder, thereby enabling accurate measurement of permeability.
上記の技術的課題を解決するために本考案に於
いて講じた手段は以下の如くである。
The measures taken in the present invention to solve the above technical problems are as follows.
裸地に掘つた穴の内部に、金属又はそれに代わ
る不透水性材料で造つた内外二重の筒体を嵌込
み、内筒体の内部と内外両筒体の間隔内に夫々水
を満たしてその浸透能を測定する装置に於いて、
上記内筒体の下端縁に内側に屈曲するフランジ部
を設けること。 A double inner and outer cylinder made of metal or an alternative water-impermeable material is fitted into a hole dug in the bare ground, and the inside of the inner cylinder and the space between both the outer and outer cylinders are filled with water. In the device that measures the penetrating ability,
A flange portion bent inward is provided on the lower end edge of the inner cylinder.
上記の手段は以下の如く作用する。 The above means works as follows.
即ち、内外の筒体内に水を張つて浸透能測定を
行なう場合、内筒体の壁面に沿つて降下浸透する
水は、内筒体の下端縁に内側に屈曲して形成した
フランジ部に当つてその浸透方向を内側に曲げる
から、これで穴の周辺部の水が中央部に先行して
浸透することを防止し、内筒体内部の水を均一に
浸透させて、浸透能測定を正確に行なうことを可
能にする。 In other words, when measuring the permeability by filling the inner and outer cylinders with water, the water that descends and permeates along the wall surface of the inner cylinder hits the flange formed by bending inward at the lower edge of the inner cylinder. Since the permeation direction is bent inward, this prevents the water in the periphery of the hole from permeating before the center, allowing the water inside the inner cylinder to permeate evenly, allowing for accurate permeation capacity measurements. make it possible to do so.
以上の如くであるから、上記の手段によつて上
述した技術的課題を解決して、前記従来の技術の
問題点を解消することができる。 As described above, the above-mentioned technical problem can be solved by the above-mentioned means, and the problems of the conventional technology can be solved.
以下に、上述した本考案に係る排水の浸透能測
定装置の好適な実施例を添付した図面と共に詳細
に説明する。
Hereinafter, preferred embodiments of the waste water permeability measuring device according to the present invention will be described in detail with reference to the accompanying drawings.
第１図は本考案の平面図で、第２図は同じく浸
透能を測定している状態の正断面図を、また、第
３図は要部の拡大断面図を示すものであつて、こ
れ等の図面に於いて、１と２は金属又はそれに代
わる不透水性材料（例えばプラスチツク等）を用
いて構成した内外二重の筒体で、１ａは内筒体１
の下端縁を内側に屈曲して形成したフランジ部を
示し、上記外筒体２の内径は上記フランジ部１ａ
部分の内径の大凡２倍に構成され、また、両筒体
１，２の丈（高さ）は同一寸法に形成されてい
る。 Fig. 1 is a plan view of the present invention, Fig. 2 is a front cross-sectional view of the device under measurement of permeability, and Fig. 3 is an enlarged cross-sectional view of the main parts. In the drawings, 1 and 2 are double inner and outer cylinders made of metal or an alternative water-impermeable material (such as plastic), and 1a is the inner cylinder 1.
shows a flange formed by bending the lower end edge inward, and the inner diameter of the outer cylinder 2 is the flange portion 1a.
The length (height) of both cylindrical bodies 1 and 2 is the same.
因に、上記内外の筒体１，２の丈は15cmで、内
筒体１の内径は16cm、フランジ部１ａの幅は0.5
cm、フランジ部１ａ部分の内径は15cm、外筒体２
の内径は30cmに夫々形成されているが、これ等は
実施の一例である。 Incidentally, the length of the inner and outer cylinders 1 and 2 is 15 cm, the inner diameter of the inner cylinder 1 is 16 cm, and the width of the flange portion 1a is 0.5 cm.
cm, the inner diameter of the flange part 1a is 15 cm, the outer cylinder body 2
The inner diameter of each is 30 cm, but this is just an example of implementation.
次に、第２図並びに第３図に於いて３は裸地Ｔ
の地表面Taを掘つて形成した穴で、この穴３の
内部には、上端側の1/3を地表面Ta上に突出した
状態で前記の内筒体１の下端側が密接した状態で
嵌込まれ、更に、平に形成した上記穴３の底面上
には、１〜２列の小礫４…が敷設されている。５
は上記穴３に嵌込まれている内筒体１の外側地表
面Taを、上記穴３の半分の深さに掘つて形成し
た環状穴で、この環状穴５の内部に図示の如く上
記外筒体２の下端側が内筒体１と同じ深さに嵌込
まれ、これで測定装置の設置が完了する。 Next, in Figures 2 and 3, 3 is a bare area T.
A hole is formed by digging at ground surface Ta, and inside this hole 3, the lower end side of the inner cylindrical body 1 is fitted in a close state with 1/3 of the upper end side protruding above ground surface Ta. Further, on the bottom surface of the hole 3 which is formed flat, one or two rows of gravel 4 are laid down. 5
is an annular hole formed by digging the outer surface Ta of the inner cylindrical body 1 fitted into the hole 3 to a depth half that of the hole 3; The lower end side of the cylindrical body 2 is fitted to the same depth as the inner cylindrical body 1, and the installation of the measuring device is now completed.
因みに、上記穴３の深さは10cm、環状穴の深さ
は５cmであるが、これ等の寸法は任意とする。 Incidentally, the depth of the hole 3 is 10 cm, and the depth of the annular hole is 5 cm, but these dimensions are arbitrary.
以上の如く構成した本考案の測定装置を用いて
浸透能を測定するには、内外両筒体１，２の内部
に夫々水Ｗを満たして測定し、最終浸透能に到達
した時に、両側に底面から地表面Taの高さ（例
えば10cm高さ）迄水Ｗを張り、浸透によつて内筒
体１の水位が所定値（例えば2.5cm）分低下する
に要した時間を測定し、これから浸透速度mm／時
を計算するのであるが、本考案では内筒体１の下
端縁に内向きのフランジ部１ａを形成したため、
内筒体１の内壁に沿つて降下浸透する水Ｗは、第
３図の矢印Xaに示す様にフランジ部１ａに案内
されてその方向を内側に変更するから、これにて
中央部よりも周辺部が先行して略アーチ形に浸透
してしまう前記従来技術の問題点を解決すること
ができ、浸透をWbで示す様に内筒体１内の底部
全面に平均して行なわせることを可能にした。 In order to measure the permeability using the measuring device of the present invention configured as described above, the inner and outer cylinders 1 and 2 are filled with water W respectively, and when the final permeability is reached, both sides are filled with water W. Fill water W from the bottom to the height of the ground surface Ta (e.g. 10 cm height), measure the time required for the water level in the inner cylinder 1 to drop by a predetermined value (e.g. 2.5 cm) due to penetration, and then The infiltration speed mm/hour is calculated, but in this invention, since an inward flange portion 1a is formed on the lower edge of the inner cylinder 1,
The water W that descends and permeates along the inner wall of the inner cylinder 1 is guided by the flange portion 1a and changes its direction inward as shown by the arrow Xa in FIG. It is possible to solve the problem of the prior art technology, in which the portion penetrates in an approximately arch shape in advance, and it is possible to cause the penetration to occur evenly over the entire bottom of the inner cylinder 1, as shown by Wb. I made it.
以上述べた次第で、本考案に係る排水の浸透能
測定装置によれば、極めて簡単に、且つ、水理学
的見地に合つた測定を行なうことができるもので
あつて、特に、内筒体内に於ける水の浸透を全面
的に均一に行なえるから、浸透能を極めて正確に
測定できる利点を発揮することができ、構成が簡
単で実施が容易である点と相俟つて、その実用的
効果は極めて高い。
As described above, the drainage permeability measuring device according to the present invention can perform measurements extremely easily and in accordance with a hydraulic viewpoint, and in particular, Since the water permeates uniformly over the entire surface, it has the advantage of being able to measure the permeation capacity extremely accurately, and together with the fact that it is simple in configuration and easy to implement, its practical effects are is extremely high.
第１図は本考案に係る装置の平面図で、第２図
はその測定時の状態を示した正断面図、第３図は
要部の拡大断面図、第４図は従来装置の正断面図
である。
１は内筒体、１ａはフランジ部、２は外筒体、
３は穴、５は環状穴、Ｔは裸地、Ｗは水。
Fig. 1 is a plan view of the device according to the present invention, Fig. 2 is a front sectional view showing the state at the time of measurement, Fig. 3 is an enlarged sectional view of the main part, and Fig. 4 is a front sectional view of the conventional device. It is a diagram. 1 is an inner cylinder, 1a is a flange, 2 is an outer cylinder,
3 is a hole, 5 is a circular hole, T is bare ground, and W is water.
Claims (1)
る不透水性材料で造つた内外二重の筒体を嵌込
み、内筒体の内部と内外両筒体の間隔内に夫々水
を満たしてその浸透能を測定する装置に於いて、
上記内筒体の下端縁に内側に屈曲するフランジ部
を設けたことを特徴とする排水の浸透能測定装
置。 A double inner and outer cylinder made of metal or an alternative water-impermeable material is fitted into a hole dug in the bare ground, and the inside of the inner cylinder and the space between both the outer and outer cylinders are filled with water. In the device that measures the penetrating ability,
A drainage permeability measuring device, characterized in that a flange portion bent inward is provided on the lower end edge of the inner cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12949287U JPH0533965Y2 (en) | 1987-08-26 | 1987-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12949287U JPH0533965Y2 (en) | 1987-08-26 | 1987-08-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6434563U JPS6434563U (en) | 1989-03-02 |
| JPH0533965Y2 true JPH0533965Y2 (en) | 1993-08-27 |
Family
ID=31383816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12949287U Expired - Lifetime JPH0533965Y2 (en) | 1987-08-26 | 1987-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0533965Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5270650B2 (en) * | 2010-12-13 | 2013-08-21 | 株式会社四電技術コンサルタント | Permeability test equipment |
-
1987
- 1987-08-26 JP JP12949287U patent/JPH0533965Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6434563U (en) | 1989-03-02 |
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