沙颍河耿楼枢纽高挡土墙墙后回填水泥土技术  

Technology Research of Backfill Cement Soil Behind High Retaining Wall of the Genglou Control Project in Shayinghe River

作　　者：朱旋[1] 孙勇[1] 尚俊伟 

机构地区：[1]中水淮河规划设计研究有限公司,安徽蚌埠233000

出　　处：《南水北调与水利科技》2012年第6期155-158,共4页South-to-North Water Transfers and Water Science & Technology

摘　　要：为解决土基上高达20m左右挡土墙的稳定问题,针对工程所在区粉质黏土的土质情况,可采用墙后回填水泥土的方法以降低土压力、减少挡土墙的断面尺寸。通过对三种水泥掺量的水泥土进行室内试验研究,结合沙颍河治理工程的施工条件,总结了一套墙后回填水泥土的设计计算要点,科学地选取水泥土的抗剪强度指标和无侧限抗压强度指标,计算出水泥土对挡土墙的侧压力及水泥土的回填范围,并据此设计挡土墙。研究成果成功解决工程的设计难题,且节省投资约400万元,对今后土基上高挡土墙的设计提供了一定的经验,为水泥土的应用和推广积累可借鉴的基础数据。To solve the stability problems of the 20 m high retaining wall on the soil bed, the method of backfill cement soil be-hind the retaining wall was applied to reduce the soil pressure and cross-section dimensions of the retaining wall in light of the silty clay soil conditions in the study area. Based on the laboratory tests on the cement soils with three different cement con-tents, the design and calculation points for the backfill cement soil behind the retaining wall were summarized considering the construction conditions of the regulation project in the Shayinghe River. The shear strength＇index and unconfined compressive strength index of the cement soil were selected scientifically to calculate the lateral pressure of cement soil on the retaining wall and backfill range of cement soil, which can be used to design the retaining wall. The study solved the engineering design diffi-culties and saved the cost of about 4 million Yuan. This paper can provide references for the design of retaining wall on the soil bed and basic data for the application and promotion of cement soil.

关 键 词：沙颍河 耿楼枢纽 节制闸 高挡土墙 水泥土 

分 类 号：TU318[建筑科学—结构工程] TU476