Improving drainage in schoolyards and farmland! How to choose the best culvert drainage pipe

校庭やグラウンド、公園や農地など一定の広さを持つ土砂の地表は降雨後の水はけが悪く、ぬかるみや水たまりが発生してしまう場合があります。このような状態が多発し、校庭などを利用できずに頭を抱えている方も多いのではないでしょうか。

この記事では、水はけ問題に関する基礎知識の解説を交えつつ、改善策として最適な暗渠排水管『マックスドレーン』をご紹介します。詳しい知識をお持ちでない方にも分かりやすくまとめていますので、ぜひ参考にしてみてください。

What causes poor drainage?

The following is a brief explanation of the reasons for poor drainage at the soil surface. The causes include the following points

• Poor or deteriorated drainage performance of the soil or sand used
• Irregular irregularities or unbalanced gradients on the ground surface
• Culvert drainage is absent or its performance has deteriorated

The majority of the causes are first and foremost the poor drainage performance of the soil and the condition of the ground surface. Land that experiences drainage deterioration problems has often been used for many years, and the problem is exacerbated by age and deterioration. A common measure to remedy this problem is to install culvert drainage in advance. The following is an explanation of culvert drainage, which is a relatively easy measure to take.

What is culvert drainage?

「暗渠（あんきょ）」とは、地下に埋設したりふたをしたりした水路のことを指します。これを活用して土地の水はけを改善する手法を「暗渠排水」といい、そもそもは水田を乾田化するために取り入れる方法のひとつでした。

そこから派生し、現在では地表の残留水の除去や地下水位の低下を図るために地下に連続した通水空間を設けて余分な水を効果的に排除するための設備として発展して、各所で導入されるようになりました。

 

暗渠排水は主にコンクリートの排水路と地表の水を浸透させる地中管を設置する仕組みになっています。地中管にはプラスチック系や素焼きの土管などが使用されます。

Materials and design that produce ideal pore size

Max Drain has achieved an ideal structure focusing on the importance of pore diameter. Comparisons between Max Drain and other culvert drainage pipes in terms of opening rate and water absorption pore diameter, respectively, are summarized in the table below.

MaxDrain is extremely light, weighing only 9 kg per 20-meter length, making it easy to transport and lay, and reducing the labor required for installation compared to other drainage pipes. Another major feature of Max Drain is that it can be easily carried to sites with unfavorable conditions. The structure is a flexible, long infiltration pipe with a special split fiber tubular body and helical reinforcement fused to it, making it easy to install in curves and follow the ground movement. The joints are screwed together for easy connection and a high level of safety.