Skim pembinaan paip tanpa parit bagi paip kuasa MPP: pengelakan dan akses atas talian.

2025-08-18

Pembinaan paip tanpa parit untuk paip kuasa

MPP mempunyai kelebihan gangguan permukaan yang kecil dan kecekapan pembinaan yang tinggi, dan digunakan secara meluas dalam pemasangan saluran paip kuasa bandar. Antaranya, pengelakan saluran paip dan pembinaan atas adalah pautan teras untuk memastikan keselamatan dan kualiti kejuruteraan. Penyeberangan selamat saluran paip bawah tanah perlu dicapai melalui perancangan saintifik dan operasi yang tepat.

Pengelakan saluran paip: pra-tinjauan dan pengoptimuman laluan

Perlindungan saluran paip adalah berdasarkan pemahaman penuh persekitaran bawah tanah. Sebelum pembinaan, unit tinjauan bersama perlu menggunakan teknik gabungan "penerokaan fizikal + penggerudian": kedudukan saluran paip bawah tanah yang sedia ada (seperti paip bekalan air, paip gas, kabel optik komunikasi) melalui radar geologi, pengesan saluran paip dan peralatan lain, digabungkan dengan penggerudian untuk mendapatkan data geologi dan membentuk peta tiga dimensi pengedaran saluran paip bawah tanah dengan tepat. Perancangan laluan perlu mengikut prinsip "jarak selamat keutamaan", mengekalkan jarak jelas mendatar tidak kurang daripada 1.5 kali diameter paip daripada saluran paip yang sedia ada, dan jarak menegak tidak kurang daripada 0.5 meter; jika terdapat kawasan saluran paip yang padat, skema "rentang atas" atau "terowong" boleh diguna pakai - apabila saluran paip sedia ada mempunyai kedalaman yang cetek, reka bentuk trajektori angkat atas (cerun 15), sebaliknya tenggelam dan belitan untuk memastikan jarak bersih pada persimpangan. Untuk saluran paip penting yang tidak dapat dielakkan, lengan pelindung (seperti paip CPVC) atau cerucuk penggali tiruan perlu dipasang untuk mengelakkan gangguan pembinaan.

Pembinaan Atas Ke Hadapan: Kawalan Panduan dan Pelarasan Dinamik

Pautan atas perlu disasarkan dengan "panduan ketepatan dan pendorongan stabil". Untuk pemilihan peralatan, gerudi arah mendatar dipilih mengikut diameter paip (biasanya Φ200-Φ630mm) dan keadaan geologi (tanah liat, pasir, batu), dan panduan padanan (ketepatan 20mm / 30m) memantau trajektori gerudi dalam masa nyata. Sebelum pembinaan, adalah perlu untuk meletakkan garis rujukan pemandu di atas tanah, masukkan parameter trajektori reka bentuk (cerun, jejari kelengkungan), hantar data kedudukan ke konsol melalui probe yang dibina ke dalam gerudi pemandu, dan laraskan sudut penggerudian tepat pada masanya apabila sisihan melebihi 50mm.

Pelindung dinding lumpur ialah langkah tambahan utama untuk pembinaan bahagian atas. Untuk pembentukan pasir dan kerikil, buburan bentonit (kelikatan 30-50s) digunakan untuk membentuk filem pelindung dinding runtuh, mengurangkan risiko keruntuhan dinding; pembentukan tanah liat dapat mengurangkan buburan dan mengurangkan rintangan dengan sewajarnya. Daya seretan belakang (80% daripada kekuatan hasil paip) perlu dikawal semasa proses kemasukan atas, dan mod masukan atas hierarki diguna pakai: peringkat awal (50m pertama) pendorongan kelajuan rendah (1-2m / min), pecutan secara beransur-ansur selepas trajektori menjadi stabil, untuk mengelakkan keretakan paip akibat daya yang tidak sekata.

Pemantauan Dinamik dan Sokongan Kecemasan

Untuk menangani ketidakpastian dalam pembinaan, sistem pemantauan dwi "tanah + bawah tanah" perlu diwujudkan: titik cerapan penyelesaian (jarak 5-10m) disusun di atas tanah untuk memantau penempatan permukaan (nilai amaran awal 30mm); Penderia gentian optik teragih digunakan di bawah tanah untuk memantau anjakan dan perubahan tekanan saluran paip sedia ada dalam masa nyata. Jika didapati bahawa saluran paip diimbangi lebih daripada 10mm atau mendap terlalu cepat, mulakan pelan kecemasan dengan segera: hentikan pengambilan atas, laraskan nisbah buburan, dan gunakan pengukuhan grouting (simen-kaca air bicecair pulpa) untuk menstabilkan pembentukan jika perlu.

Di samping itu, perlindungan keselamatan perlu dilakukan sepanjang proses pembinaan: sediakan kawasan amaran untuk mengasingkan tapak pembinaan, dilengkapi dengan peralatan pembaikan kecemasan saluran paip bawah tanah (seperti occluder, paip sandaran), dan wujudkan mekanisme rangkaian dengan unit pemilikan saluran paip untuk memastikan tindak balas yang cepat terhadap kecemasan. Melalui langkah-langkah di atas, keselamatan dan penghadang tepat saluran paip dalam pembinaan paip bukan pengorekan kuasa MPP dapat direalisasikan dengan berkesan, dan sokongan teknikal yang boleh dipercayai untuk pembinaan infrastruktur kuasa bandar dapat dipastikan.

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