摘要
西部油气站场多建于湿陷性黄土地区,导致站场及阀室地基产生不同程度的湿陷,影响站场和阀室的正常安全运行。以标准砂、石灰、水泥、水玻璃作为改良材料,研究其在不同配比条件及不同压实系数下黄土的湿陷性大小。结果表明:改良黄土均能较大程度地降低黄土的湿陷性,在一定的压实系数条件下,黄土湿陷性基本消除,可以满足安全需要。从改良效果来看,水玻璃改良效果最好,石灰及水泥次之,标准砂最差。
In western China, oil and gas stations are mostly built on collapsible loess areas. The foundations of the stations and valve rooms have collapses at different degrees which may threaten the normal operation and safety of stations and valve rooms. So, the foundations should be improved. With standard sand, lime, cement and sodium silicate as modified materials, the collapsibility of loess was calculated by varying the proportioning of the modified materials and the compaction coefficient. It is shown that collapsibility of the modified loess is reduced significantly, and even eliminated if the compaction coefficient is set satisfactorily. In terms of modification results, the modified materials can be ranked in a descending order of sodium silicate, lime, cement, and standard sand.
作者
朱彦鹏
高青云
袁中夏
杨鹏
谭东杰
ZHU Yanpeng GAO Qingyun YUAN Zhongxia YANG Peng TAN Dongjie(School of Civil Engineering, Lanzhou University of Technology Key Laboratory of Disaster Prevention and Reduction for Civil Engineering in Gansu Province PetroChina Pipeline R ＆ D Center)
出处
《油气储运》
CAS
北大核心
2016年第9期985-989,共5页
Oil & Gas Storage and Transportation
基金
中国石油管道公司科技攻关项目"油气管道黄土湿陷性评价方法及治理措施研究"
GDGS-KJZX-2014-FW-287
关键词
油气场站
改良黄土
配比
压实系数
湿陷系数
oil and gas stations, modified loess, proportioning, compaction coefficient, collapsibility coefficient
