摘要
为研究过量开采地下卤水对德大铁路DK228+700-DK257+529区间段发生区域性沉降的影响,基于铁路路肩精密水准测量结果,采用有限差分软件FLAC^(3D)进行数值模拟的方法,研究了抽水过程中土体及铁路路基沉降的特性.研究结果表明:卤水井抽水造成地面沉降的范围和沉降量受水井数量和水位变化的影响,且主要受水位变化的影响;受抽水影响,处于-25.2^-2.5 m内的浅层土体发生较大的压缩,是造成土体沉降的主体部分;铁路路基沉降尚未达到稳定,沉降仍会继续.这可为因抽水造成的路基沉降的预测和治理工作提供重要参考.
To study the effect of the regional settlement of Deda railway DK228＋700-DK257＋529 range which is caused by excessive exploitation of underground brine, the characteristics of soil and the railway subgrade settlement has been done by using finite difference software FLAC30 in the process of pumping based on precise leveling of shoulder settlement. It is shown that the range and the amount of the ground settlement caused by the pumping of brine well is influenced by the amount of well and the change of the water level, and is mainly affected by the change of water level; Under the influence of water pumping, the compression of the shallow layer in the -25.2--2.5 m range is the main part of the soil settlement; Railway roadbed settlement has not yet reached stability, and the settlement will continue. This research can provide important reference for the prediction and treatment of the subgrade settlement caused by pumping.
出处
《辽宁工程技术大学学报（自然科学版）》
CAS
北大核心
2017年第7期707-712,共6页
Journal of Liaoning Technical University (Natural Science)
基金
国家自然科学基金(51574055
51009015)
关键词
卤水井
抽水
地面沉降
铁路路基
沉降预测
brine well
water pumping
ground subsidence
railway subgrade
settlement prediction
