南水北调中线煤矿采空区注浆材料配比优化设计

发布时间：2018-01-21 11:19

本文关键词： 注浆材料田口方法信噪比分析参数优化煤矿采空区　出处：《人民长江》2016年13期 　论文类型：期刊论文

【摘要】：为避免建设在煤矿采空区上的南水北调中线总干渠在运行过程中发生不均匀沉降变形,需对采空区进行注浆处理,基于田口方法对所用注浆材料配比进行了优化设计。首先在3因素4水平正交表中确定的试验方案下进行了注浆结石体的无侧限抗压强度试验,随后基于试验结果进行了无侧限抗压强度的信噪比和贡献率分析,在此基础上定量分析了粉煤灰、膨胀土掺量和硅粉掺量3种可控因素对注浆结石体无侧限抗压强度的影响,据此得出了注浆材料最优配比。最后,利用田口方法对最优配比条件下的注浆结石体的无侧限抗压强度进行预测。验证试验表明,注浆材料最优配比条件下的试验值与田口方法的预测值比较吻合,确认了田口法在注浆材料配比优化设计中的有效性。
[Abstract]:In order to avoid the uneven settlement and deformation of the main canal of the South-to-North Water transfer Project in the coal mine goaf, the grouting treatment should be carried out in the goaf. Based on the Taguchi method, the optimum design of the grouting material ratio was carried out. Firstly, the unconfined compressive strength test of the grouting stone was carried out under the test scheme determined in the three factors and four horizontal orthogonal tables. Then the SNR and contribution rate of the unconfined compressive strength are analyzed based on the test results, and then the fly ash is quantitatively analyzed. The influence of three controllable factors on the unconfined compressive strength of the grouting stone was obtained. Finally, the optimum ratio of the grouting material was obtained. Taguchi method is used to predict the unconfined compressive strength of the grouting stone under the optimal ratio. The test results show that the experimental value under the optimal ratio of grouting materials is in good agreement with the predicted value of the Taguchi method. The effectiveness of Taguchi method in the optimum design of grouting material ratio is confirmed.
【作者单位】：青海省环境地质勘查局;青海省环境地质重点实验室;
【分类号】：TD325.3;TV68
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