四川攀枝花钒钛产业园区膨胀土分析

Analysis of the Expansive Soil in the Panzhihua Vanadium-Titanium Industrial Park in Sichuan

四川攀枝花钒钛产业园区广泛分布膨胀土,对园区工程建设带来不利影响。通过对该区膨胀土的成因、分布、特性等进行调查、研究,对膨胀土的危害、整治进行了阐述,并对膨胀土处理不当的案例进行了总结。提出的主要治理措施为膨胀土填方地基、边坡,掺石灰是膨胀土改性处理的最有效方法。膨胀土地基,可采用增加基础埋置深度的防治措施,园区内膨胀土区基础埋置深度应不小于2m。边坡工程采用缓边坡、分级低挡墙方案,并注意挖方方式、顺序的合理性。膨胀土区建设,无论何时都应高度重视防水、排水措施。

Expansive soil is widely distributed over the Panzhihua Vanadium Titanium Industrial Park.This expansive soil has a negative impact on the construction of the park project.This paper deals with distribution,genesis,particular property and endanger of the expansive soil in the industrial park.Such control methods of the expansive soil as doping with lime,increase in base depth of more than 2 m,slow slope,graded low retaining wall are proposed.Waterproofing and drainage measures are of great importance to construction in the expansive soil region.