A small amount of coolant may flow out when you remove or insert a pipe, which is normal. Prepare tissues to wipe away the coolant. If a stop valve is not removed and inserted for more than three months, press the stop valve once or twice (you only need to press the stop valve and...
The present invention provides a mole for use in replacing or preparing for replacement an existing underground pipe. The mole is adapted for insertion into and movement along the existing pipe, and has a front portion (2, 3) provided with a cutting face for engaging the internal wall of ...
A Noriyuki,荒川 範行,I Takahiro,石原 孝浩 摘要: PROBLEM TO BE SOLVED: To develop a method for recovering a buried pipe from the ground and installing a new pipe at the same time, when the buried pipe is replaced to the new pipe....
New pipe sections (17) are introduced from the rear inspection shaft. The new pipeline has a larger external diameter than the old pipeline. The shaped rig head displaces the soil to create the space for the new pipe sections. ADVANTAGE - No excavations required, cost saving pipeline ...
The utility model discloses an improvement of changing the three-layer production well without pulling pipe strings, which is suitable for production well with three layers of oil recovery. The pipe strings comprise a layer pipe string and a separate recovery pipe string, the layer pipe string co...
5) surface soil backfilled 表土回填 6) backfill[英]['bækfil] [美]['bæk,fɪl] 回填土 1. Foundation treatment in pipe construction for water supply and drainage inbackfillregion; 回填土地区给排水管道施工基础处理的探讨 2.
A permeable backfill may improve pipe drainage for soils that have a slowly permeable subsoil. Permeable backfills were created directly over drains installed 8 years earlier by replacing soil with gravel and by trenching and refilling. ... GS Taylor,SS Hundal,NR Fausey,... - 《Soil Science...
a所有土质路堑地段,基床换填0.5m厚非冻胀性的A、B组填料及0.1m厚的中粗砂, 并在中粗砂中部铺设一层复合土工膜;采用浆砌片石矩型侧沟排水,侧沟外留1.0m宽平台,采用浆砌片石铺砌。侧沟及平台铺砌均采用M7.5浆砌片石砌筑。 All soil texture cut the land sector, trades foundation-bed fills in 0.5m to...
Pop-Ups In an area with a high ground water base and a mixture of clay in the soil, fiberglass pools, without a cantilevered concrete surrounding deck, can pop up out of the ground and float in the surrounding water and mud.
Herein, the multifunctional experimental apparatus for the pipe-soil frictional resistance testing is improved to ensure the smooth implementation of the ... Jiwei Wen,Yachen Ma,Tian Xiang,... - Scientific Reports 被引量: 0发表: 2025年 Gas replacement apparatus of gas pipe PROBLEM TO BE SOLVED...