JPS5949372B2 - Erosion control method for upstream rivers or small rivers, etc. - Google Patents
Erosion control method for upstream rivers or small rivers, etc.Info
- Publication number
- JPS5949372B2 JPS5949372B2 JP2080780A JP2080780A JPS5949372B2 JP S5949372 B2 JPS5949372 B2 JP S5949372B2 JP 2080780 A JP2080780 A JP 2080780A JP 2080780 A JP2080780 A JP 2080780A JP S5949372 B2 JPS5949372 B2 JP S5949372B2
- Authority
- JP
- Japan
- Prior art keywords
- rivers
- upstream
- control method
- small
- disaster prevention
- 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
Links
Landscapes
- Revetment (AREA)
Description
【発明の詳細な説明】
この発明は、山腹崩壊時の土砂に含まる泥水を速かに排
水管から防災を経て下流に流し、土石流の流勢を減殺し
て災害を防止すると共に、下流の河床上床を阻止し且つ
極めて経済的に施工することを目的とするものである。[Detailed Description of the Invention] This invention quickly drains muddy water contained in earth and sand from a drainage pipe downstream through a disaster prevention system to reduce the force of a debris flow and prevent disasters. The purpose is to prevent the upper bed of the river bed and to construct it extremely economically.
因に実施例を図面について説明するに、1は河川の上流
又は小河川の河床、2は下流河床、3は該河川の適所に
打込んだパイルにして該パイル3を基礎にして各種人ニ
ブロック4を積上げて防災dを築工する。Incidentally, to explain the embodiment with reference to the drawings, 1 is a riverbed of an upstream or small river, 2 is a downstream riverbed, and 3 is a pile that is driven into a suitable place in the river. Stack block 4 and construct disaster prevention d.
5は上面に多数の導水孔6を設けた排水管にして肢管5
を少くとも一個以上連結し。5 is a drainage pipe with a large number of water introduction holes 6 on the upper surface, and is a limb pipe 5.
Connect at least one or more.
て前記河床1に沿い敷設し下端を防災dに連通したもの
である。The pipe is laid along the river bed 1, and the lower end is connected to the disaster prevention station d.
土石流の発生は主として山腹崩壊による土砂がそのまま
水を含んで流下する場合であって、殊に集中豪雨や長雨
に遭遇した場合の崩壊には多量の水を含むために災害の
度合が極めて大きい。Debris flows occur mainly when the earth and sand from a mountainside collapse flows down, containing water, and the degree of disaster is extremely large, especially when a collapse encounters torrential rain or prolonged rain because it contains a large amount of water.
そこでかかる場合の土石流対策として発想したのが本工
法であって、本工法は、施工が極めて容易で工事費が著
しく経済的な実利がある。Therefore, this construction method was devised as a countermeasure against debris flows in such cases, and this construction method is extremely easy to construct and has a significant economical cost.
本工法は小河川の砂防に適するは論を待たないが、むし
ろダムの上流に少くとも一段階以上に防災を築工せば、
該防災が狭い地域毎に土石流の流勢を減殺しながら泥水
を漉して土石流の堆積物および流木等の流下を防止する
と共に、該堆積物中の含水を導水孔6から排水管5によ
り防災を経て下流に排出するから土石流の流下によるダ
ムへの影響を軽減してダムの利用度を著しく高める効果
がある。It goes without saying that this construction method is suitable for erosion control in small rivers, but if you construct at least one level of disaster prevention upstream of the dam,
The disaster prevention system reduces the force of the debris flow in each narrow area and filters muddy water to prevent debris flow deposits, driftwood, etc. from flowing down, and the water contained in the deposits is drained from the water guide hole 6 through the drain pipe 5 for disaster prevention. Since it is then discharged downstream, it has the effect of reducing the impact on the dam caused by debris flows and significantly increasing the utilization of the dam.
殊にこの防災は、直線的に猛烈な勢いで流下する土砂流
をコンクリートの厚い壁にて受止める本重力式ダム又は
砂防ダムのような規模の大きい工事のものと異って、小
規模の割りには勢破濃過の性能を発揮して土石流の勢力
を殺ぎ泥水の濃過を促進すると共に、他方排水管5が導
水孔6から含水を導入して肢管5が満杯とならない限り
表面張力を切って常時管内を流動して排水を図る効果が
ある。In particular, this type of disaster prevention is different from large-scale construction works such as gravity dams or sabo dams, which use thick concrete walls to catch the mud flowing down in a straight line with fierce force. In fact, it exhibits the performance of sewage concentration, kills the force of debris flow, and promotes the concentration of muddy water, and on the other hand, as long as the drainage pipe 5 introduces water from the water introduction hole 6 and the limb pipe 5 does not become full. It has the effect of breaking the surface tension and constantly flowing inside the pipe to drain water.
しかもこの工法は、比較的小規模であるから地域条件に
左右されることがないのみならず凡ての部材が現場打ち
に適し施工が容易であるので、工事費の節減を図り得る
上で頗る大きな利点がある。Moreover, this construction method is not only unaffected by local conditions since the construction is relatively small-scale, but also all components are suitable for casting on-site and construction is easy, making it extremely effective in reducing construction costs. There are big advantages.
添附図面は本発明工法の実施例を示す断面図である。 The attached drawings are cross-sectional views showing embodiments of the construction method of the present invention.
Claims (1)
込みこれを基礎にするか或いはパイル打込みを排してそ
のままテトラポット、左脚ブロック、十字形ブロック等
々各種人ニブロックを整然又は雑然と積上げて防災を築
工し、次で上面に多数導水孔を設けた排水管又は逆さし
字溝管を少くとも一個以上連結しなから河床に沿い敷設
すると共に、下端を前記防災に連通することを特徴とす
る河川の上流又は小河川等の砂防工法。1. Driving piles in appropriate places upstream of rivers, small rivers, valleys, etc. and using this as a foundation, or by eliminating pile driving and building various types of blocks such as tetrapods, left leg blocks, cross-shaped blocks, etc. in an orderly or disorderly manner. Build a disaster prevention system by stacking them up, and then connect at least one or more drainage pipes or inverted groove pipes with multiple water guide holes on the upper surface, and then lay them along the river bed, and connect the lower end to the disaster prevention system. An erosion control method for upstream rivers or small rivers, etc. characterized by
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2080780A JPS5949372B2 (en) | 1980-02-20 | 1980-02-20 | Erosion control method for upstream rivers or small rivers, etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2080780A JPS5949372B2 (en) | 1980-02-20 | 1980-02-20 | Erosion control method for upstream rivers or small rivers, etc. |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56119010A JPS56119010A (en) | 1981-09-18 |
JPS5949372B2 true JPS5949372B2 (en) | 1984-12-03 |
Family
ID=12037303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2080780A Expired JPS5949372B2 (en) | 1980-02-20 | 1980-02-20 | Erosion control method for upstream rivers or small rivers, etc. |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5949372B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11294787B2 (en) | 2016-08-31 | 2022-04-05 | Arm Limited | Apparatus and method for controlling assertion of a trigger signal to processing circuitry |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60119808A (en) * | 1983-11-30 | 1985-06-27 | Nippon Soohan Kk | Soil saving dam |
US9279223B2 (en) * | 2013-08-28 | 2016-03-08 | Mario L. Messina | Sand retention system |
JP6637256B2 (en) * | 2015-05-22 | 2020-01-29 | 鹿島建設株式会社 | How to build a sabo dam |
JP7393094B1 (en) * | 2023-05-02 | 2023-12-06 | 原田 好也 | Sabo dam and dike |
-
1980
- 1980-02-20 JP JP2080780A patent/JPS5949372B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11294787B2 (en) | 2016-08-31 | 2022-04-05 | Arm Limited | Apparatus and method for controlling assertion of a trigger signal to processing circuitry |
Also Published As
Publication number | Publication date |
---|---|
JPS56119010A (en) | 1981-09-18 |
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