Open AccessCOMBINED METHOD FOR CLEANING PIPES FROM SOIL CORE
Author(s) -
И. В. Тищенко
Publication year - 2020
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2020-2-194-200
Subject(s) - casing , hammer , core (optical fiber) , trenchless technology , water content , displacement (psychology) , geotechnical engineering , suction , materials science , engineering , structural engineering , environmental science , mechanical engineering , composite material , pipeline transport , psychology , psychotherapist
The paper is devoted to solving an urgent problem - improving the technology of soil excavation during trenchless pipe laying by vibro-impact pushing with the leading steel casing of the well. A new method for core extraction is proposed, which is based on the effect of its vibration transportation under the influence of combined static-dynamic load. The optimum level of soil moisture is experimentally determined, which contributes to a decrease in lateral friction when it moves along a metal pipe cavity. The results of pilot tests on cleaning a pipe 530 mm in diameter, immersed in soil at full design length of transition using Typhoon-190 pneumatic hammer with a mass of 190 kg are presented. The velocity characteristic of core displacement at changing its moisture content is obtained.