Pipe-jacking construction method for passing through ultra-shallow earthed river
The invention provides a pipe-jacking construction method for passing through an ultra-shallow earthed river. The method comprises the following steps of (1) surveying and setting out, (2) construction of a working well and a receiving well, (3) mounting of pipe-jacking auxiliary equipment, (4) moun...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention provides a pipe-jacking construction method for passing through an ultra-shallow earthed river. The method comprises the following steps of (1) surveying and setting out, (2) construction of a working well and a receiving well, (3) mounting of pipe-jacking auxiliary equipment, (4) mounting of pipe-jacking equipment, (5) pipeline jacking and (6) coming out. Before pipeline jacking ofthe fifth step, sand bags are stacked on a pipe-jacking river passing segment along a pipe-jacking line to form a sand bag layer, the distance between the height of the sand bag layer and the top of adesigned jacked pipe is at least 0.8D+50 cm (D is the pipeline diameter), the width of the sand bag layer is at least 7 D, waterproof cloth is laid at the bottom of the sand bag layer, and after thepipe-jacking construction project is completely finished, the sand bag layer and the water-proof layer are removed. If construction of a slurry balance pipe-jacking method is adopted in the fifth step, the distance between the |
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