摘要
某金属矿区施工的桥梁基础受到采空区、溶洞叠加影响,导致桩基础施工困难且成桩质量差。为了确保桩基础施工质量,提出采用压注混凝土方式对采空区、溶洞等进行预处理;在桩基础孔施工中采用钢护筒跟进方式确保桩基础钻孔施工质量。现场应用后,在矿区施工的桩基础后期检测质量结果均为Ⅰ类桩,取得显著应用成果。研究成果为其他类似情况下的桩基础施工提供了经验借鉴。
The mined-out areas of a metallic mine,complemented by karst caves,made the construction of the pile foundations of a bridge above very difficult and resulted in poor piles. To ensure file construction quality,it was proposed to inject concrete into the mined-out areas and the karst caves in question,and to use steel sleeve pipes to ensure the quality of foundation bore holes. After these measures were taken,foundation quality tests showed that all the piles were of Class I,hence very successful. This attempt thus brings useful experience to operations under similar circumstance.
出处
《中国矿山工程》
2021年第4期77-79,共3页
China Mine Engineering
关键词
金属矿区
采空区
溶洞
桩基础
压注混凝土
钢护筒跟进
metallic mine area
mined-out area
karst cave
pile foundation
concrete injection
steel sleeve protection
作者简介
刘双辰(1980-),男,汉,河北保定人,本科学历,高级工程师,从事岩土工程方面研究。
