PV CM二重壁ベローズ地方下水道ネットワークの建設計画:アンチエイジングと低コストの設置

2025-08-18


地方の下水処理は、生活環境を改善するための重要な生計プロジェクトであり、パイプラインネットワークの建設は、コアリンクとして、材料の耐候性が不十分であり、建設コストが高いという問題点に直面しています。PV CM二重壁ベローズは、優れた耐老化性と低い設置コストの利点により、地方の下水管ネットワークにとって理想的な選択肢になっています。エンジニアリングの実践と組み合わせて、この論文は、材料特性、建設プロセス、耐老化対策、およびコスト管理の観点から、地方のシナリオに適した一連の下水管ネットワーク建設計画を構築します。

1.材料の選択:抗老化性能がコア

PV CM二重壁ベローズは、塩化ビニル(PVC)を基材として使用し、酸化防止剤、紫外線吸収剤、カーボンブラックマスターバッチなどの修飾成分を添加することにより、材料の耐候性を向上させます。内壁は滑らかで水流抵抗を低減し、外壁のコルゲート構造はリング剛性を高め、土圧と地盤荷重に耐えることができます。建設前に、静的および油圧強度(20°C 100 h 16 MPa)、落下ハンマーの衝撃性能(0°Cで9/10が壊れない)、および耐候性指標(人工加速老化後の引張強度保持率80%)に焦点を当てて、材料の工場出荷時のレポートを確認する必要があります。材料が地方の屋外敷設環境に適合することを確認します。

2.低コストの建設プロセス設計

#1。トレンチ掘削を最適化し、土工量を削減する

農村地域の地質は主に粘土または砂質土壌であり、浅い埋設設計(パイプ上部の覆土深さ0.6-1.2 m)を採用しています。従来の深部埋設計画と比較して、土溝の幅は「パイプ外径+0.6 m」で制御され、斜面の勾配は土壌の種類に応じて調整され(粘土1: 0.5、砂1:1.25)、機械的掘削と人工的なドレッシングの組み合わせを採用し、元の状態の土を乱すオーバー掘削を避ける。このプロセスは、フランジ接続と比較して50%の工数を節約し、1台のクラスで200〜300 mのパイプラインを敷設できます。

#3。段階的な埋め戻し制御コストとパイプラインの保護

埋め戻しは、3つのステップで実装されます。①パイプの下部クッション層は、100 mmの厚さの段階的な砂利(粒子サイズ5-10 mm)を使用し、パイプラインの沈下を回避するために手動で圧縮します。②パイプの周囲の埋め戻しは、層の厚さが200 mmの素朴な土壌または細かい砂を使用し、軽量ローラーで圧縮度90%に圧縮します。③表面埋め戻しは、掘削土を使用して、30%の壊れたレンガまたは建設廃棄物(粒子サイズ50 mm)を混合し、外部購入材料のコストを削減します。

第三に、アンチエイジング建設材料の保管と敷設の保護

パイプの保管は、直射日光による老化を防ぐために日よけ布で覆う必要があります。敷設中に高温の場合は、温度差によるパイプの変形を防ぐために、溝の底に草のカーテンを敷設して保湿します。インターフェイスには、幅が200 mm以上のUV防止テープを巻き付けて、二重の保護を形成します。

#2。土壌腐食防止および制御

農村地域に存在する可能性のある酸性土壌(pH 0.3%)には、二重層パイプ敷設、内層PV CMパイプを使用します。外側はガラス繊維布で包まれ、エポキシ樹脂でコーティングされています。腐食媒体を隔離します。

第四に、コスト管理のキーポイント

1。地元の資源利用:埋め戻し材料として地元の砂利と粘土を優先し、輸送コストを40%削減します。周辺の建材建設機械の軽量化:小型掘削機(1.5 t級)、電動圧縮機を採用して大型設備に取って代わり、燃料消費量が60%減少し、農村の狭い路地作業に適応している。

3.工期圧縮:「セグメント平行施工」を採用して、溝掘削、配管敷設、埋め戻しを同期的に推進して、シングルキロ配管網の施工サイクルを7-10日に抑えて、人件費を25%削減した。

五、工事効果検証

ある南方農村汚水処理プロジェクトはこの方案を応用して、PV CM二重壁ベローズ管を敷設して3.2 km、パイプ材はDN 300-DN 600規格を選択して、施工コストを85元/m(伝統的なHDPEパイプは約120元/m)に下げて、投資を11.2万元節約した。運転3年後の配管検査によると、内壁にスケールがなく、外壁に亀裂がなく、老化防止性能が設計要求(予想寿命50年)を満たし、汚水収集率が65%から92%に向上した。

PV CM二重壁ベローズ農村汚水管ネットワーク施工案は、老化防止材料の選定、施工プロセスの最適化とローカライズ資源の統合を通じて、「耐久性」と「経済性」のバランスを実現した。将来は知能監視技術と結合して、配管の重要なノードに圧力センサーを設置し、リアルタイムで閉塞や破損を警告し、農村汚水管理の長期性をさらに高めることができる。

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