| 摘要 |
FIELD: construction.SUBSTANCE: invention relates to construction and repair of pipelines extending over water obstacles. This method comprises installation of rotary sealing chamber (further referred to as chamber) by coupler to contact with pipeline, attachment by yokes to pipeline, turning through 180 degrees, spacing and washing out. Then, chamber top part is placed on bottom one and bolted thereto via seal washers. Chamber is locked in soil with help of ballast weights and bedding. Shaft is place atop the chamber top part vertically with allowance for pipeline lengthwise inclination at shaft installation section. Required number and depth of shaft sections are selected with allowance for possible build-up of water. Then, chamber wall flanges are sealed as well as circular holes gaps, soil is removed and water is pumped from the chamber by subsurface pump. Water is pumped off during the entire working cycle.EFFECT: safe repair works, accelerated repair.3 dwg |
