摘要
根据金沟河涡管排沙工程的布置形式及排沙要求,提出了排沙涡管开口宽度、涡管直径、涡管与渠道轴线夹角、涡管开口长度、涡管纵向坡度等技术指标的确定方法,计算并分析了排沙涡管截沙率及排沙效果。结果表明：通过对排沙涡管进行改进,金沟河排沙平均耗水量占引进水量的4.51%,符合原设计的技术指标。
Based on the comparison test of filling grouting in mined out regions, the grouting processing parameters were optimized, and better grou- ting materials, hole pith, grouting pressure and end standards were selected. The grouting treatment effect was evaluated in view of the velocity section of CT elastic wave test assisted with drilling and grouting situation. The results show that with the hole pitch of 18 m ~ 18 m, the cement grout mixed large amount of fly ash whose water-solid ratio is 1 ： 1 has great liquidity. If the pressure rises to 1.0 - 1.5 MPa and filling grouting output less than 10 L/min and lasting 10 min, the filling grouting can stop. The treatment can meet the expected filling effect through comprehensive judgment.
出处
《人民黄河》
CAS
北大核心
2012年第8期131-133,共3页
Yellow River
关键词
耗水率
截沙率
涡管排沙
金沟河
mined out region
grouting
geology CT scanning
middle line of South-to-North Water Diversion Project
