长距离管道顶管下无粘土浆液研究

Study on Clay-free Slurry Used for Long-distance Pipeline Jacking

在长距离管道顶管施工过程中,尤其是碰见复杂地层如砂卵石层的情况下,为解决在顶管施工中极易造成地层垮塌埋管、顶管阻力急剧增加导致顶管失败的难题,开展了以植物胶和聚合物为主要原料的无粘土浆液的润滑减阻护壁性能研究,最后采用正交实验得到一种适用于长距离管道顶管工程的无粘土浆液的最优配方。

In the process of long-distance pipeline jacking, especially while encountering complex stratum such as sand and gravel layer, aimed at the problems of strata collapse or jacking failure caused by excessive increase of pipe jacking resistance, a study on the clay-free slurry＇s lubricating and resistance-reducing wall-protecting properties has been carried out with plant gum and polymer as its main materials. Finally, an optimum formula of clay-free slurry is obtained for long-distance pipeline jacking engineering by orthogonal experiment.