摘要:
通过在模拟的砂卵(砾)石层中进行注浆试验,研究分析注浆压力p、注浆时间t、浆液水灰比m、地层渗透系数k、孔隙度n的单因素和多因素对浆液扩散半径R、注浆后结石体抗压强度P的影响规律及它们之间的相互关系。试验结果表明:R随着p、t、k、m的增加而增大,影响R的显著因素是p,其次是k,t和m;P随着p、t、n的增加而增大,随着m的减小而增加,p对注浆后P有较大的影响,n、t次之,而m则占有明显的优势。利用计算机优化回归实验数据,得出了它们之间的关系式。
Abstract:
By the grouting simulation test in sandy gravels,the influences of grouting pressure p,grouting time t,water cement ratio m,permeability coefficient k,porosity n upon grout diffusion radius R,concretion strength P and their correlation were analyzed.It was shown that R increased with the increasing of p,t,m and k.Distinct influencing factor on grout diffusion radius R was p and k,but the influences of t and m was small.Strength P of grouted gravels increased with the increasing p,t,n,and decreased with the decreasing of m.By regressing test data with computer,the theoretical relation was educed.
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