湿陷性黄土地区集气场站地基及地坪下沉防范与治理方法

Prevention and treatment of foundation and ground subsidence of gas gathering station in col apsible loess area

煤层气是一种重要的非常规资源,目前我国投入开发的煤层气田多分布在湿陷性黄土地区,湿陷性黄土在一定压力下受水浸湿,土结构会迅速破坏,产生较大附加下沉。本文结合某煤层气田集气场站地基及地坪沉降情况,分析其产生原因,结合湿陷性黄土沉降原理及现场施工经验,提出了一套完整的地基及地坪下沉防范与治理方法,以供相关施工参考。

Coalbed methane is an important unconventional resource,at present,coal-bed methane fields developed in China are mostly distributed in collapsible loess areas,when collapsible loess is soaked by water under certain pressure,the soil structure will be destroyed rapidly,resulting in large additional subsidence.Based on the settlement of the foundation and the ground of a gas gathering station in a coalbed methane field,this paper analyzes the causes and forward a complete set of prevention and treatment methods for the subsidence of the ground and the ground for reference in the relevant construction.