PVC二重壁ベローズコミュニティ雨水収集建設計画:傾斜設計と排水最適化

2025-08-18


都市化の加速に伴い、コミュニティ雨水収集システムはスポンジ都市建設の重要な部分になっています。PVC二重壁ベローズは、その高いリング剛性、耐食性、および便利な建設の利点により、雨水管ネットワークエンジニアリングで広く使用されています。この論文では、エンジニアリングの実践と組み合わせて、傾斜設計と排水最適化の2つの側面から、コミュニティ雨水収集システムの建設技術の要点を詳細に説明します。

1.エンジニアリング設計の基礎

コミュニティ雨水収集システムは、集水域、暴風雨強度式、および地域の降雨データに基づいて水理計算を実行する必要があります。PVC二重壁ベローズ(DN 200-DN 600)をメインパイプラインとして使用し、設計流量は50年に1回の暴風雨排出要件を満たす必要があります。パイプライン材料は、地盤荷重の作用下での構造の安定性を確保するために

2.傾斜設計の主要技術

1。傾斜値仕様

「建物の給水および排水設計基準」GB 50015によると、雨水管の最小傾斜は次のとおりです。DN 200パイプ0.003(0.3%)、DN 300パイプ0.002(0.2%)。実際の建設では、地形調整と組み合わせる必要があります。平坦なエリアでは0.5%-1%の傾斜を使用し、山岳地帯では1.5%-2%に上げることができますが、洗掘を防ぐために流量を5 m/sに制御する必要があります。

2。勾配制御対策

-標高測定に水準計を使用し、勾配制御杭を50メートルごとに設置して、パイプラインの線形偏差が20 mmであることを確認します

-溝の底に厚さ150 mmの傾斜砂と砂利のクッションを使用します。圧縮係数0.93、パイプラインの沈下による急な勾配の変化を回避します

-200 mm 200 mmのコンクリート橋脚をエルボー、ティーウェイ、その他のノードに設置して、パイプラインの安定性を高める必要があります

。3.排水最適化実装スキーム

1。パイプネットワークシステムのレイアウト

-枝状パイプネットワークと環状パイプネットワークの組み合わせを採用し、幹線道路はコミュニティ道路の緑地帯に沿って敷設され、分岐パイプの間隔は25〜30 mに制御されます

-雨水口の設定間隔:自動車レーン30〜40 m/個、歩道40〜50 m/個、盗難防止鋳鉄製の垂木(耐荷重30 kN)

-パイプの曲率半径は、曲がり角でパイプの直径の3倍であり、90の直角の曲がり角を避けます

2。水理性能の向上

-入口に沈んだマンホール(深さ800 mm)を設置し、60メッシュのステンレス鋼フィルターを内蔵して土砂詰まりのリスクを低減

-システムの最高点に排気バルブを設置し、メンテナンス井戸(直径1200 mm)を設置します。300 mごとに、坑井は水頭損失を減らすためにフローチャネル設計を採用しています

-パイプラインの埋め戻しは、層状圧縮法を採用しています:無地土壌(圧縮度90%)+中粗砂(圧縮度95%)、パイプラインの圧縮と変形を回避します

3。品質検査基準

-閉水試験:試験水頭2 m、浸透水0.05 L/(m・min)

-勾配再測定:パイプライン軸測定にトータルステーションを使用し、1%の偏差を許容します。設計勾配

-インターフェース品質:ゴムリングの挿入と接続は、インターフェースギャップが3 mmであり、水の浸透がないことを確認する必要があります

。4.建設上の注意事項

1。雨季の建設には、一時的な排水溝を設置する必要があります。溝の掘削深さが1.5 mを超える場合は、1: 0.75の傾斜を解放し、傾斜サポート

2を設定する必要があります。パイプラインを設置する前に、ベローズの内壁の滑らかさを確認する必要があります。亀裂、へこみ、その他の欠陥がないこと1雨水の逆流を防ぐために、市営パイプネットワークとの接続に逆止弁を設置する

科学的な勾配設計と排水最適化措置を通じて、PVC二重壁ベローズ雨水収集システムは効果的に団地の雨水排出効率を高め、内水害リスクを減らすことができる。施工中は設計規範に厳格に従い、現場の実際の状況に合わせてパラメータを動的に調整し、システムの長期的な安定運転を確保する必要がある。同時にスマート監視プラットフォームを確立し、流量センサーを通じて排水状態をリアルタイムで監視し、メインテナンスインテリジェントな管理を実現することを提案する。

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