隧道内挤密桩改善湿陷性黄土地基

在湿陷性黄土地区,由于未能消除地基土体的湿陷性,在施工或使用中由于水的侵入导致黄土湿陷,从而导致隧道内地基失稳而遭破坏或使道路、地下管线等被毁的事故称为黄土湿陷灾害。在隧道基面上设置若干个挤密桩孔,并在挤密桩孔内铺设填料层构成挤密桩。用挤密桩进行地基处理结构简单,施工时产生震动较小,噪声污染小,不仅能够达到隧道内消除地基黄土湿陷性的目的,同时,还能够保证隧道工程内部支护结构的稳定和施工安全。

The Tunnel Compaction Pile in Collapsible Loess Foundation Improvement

In collapsible loess areas, due to the elimination of the foundation soil collapsible, due to water intrusion in the construction or use in the loess collapsible, resulting tunnel Mainland-based instability against destruction or the roads, underground pipelines the accident destroyed is called loess collapsibility disaster. Several compaction pile holes set in the basal plane of the tunnel, laying and compaction pile hole filler layer compaction pile. Compaction pile foundation treatment of simple structure, construction vibration small, noise pollution can not only eliminate the purpose of the foundation Loess Collapsible tunnel, and at the same time to ensure the stabilityofthe internal support structure of the tunnelproject and construction safety.