富水条件下低热沥青浆液流动特性试验研究

低热沥青灌浆是在动水条件下封堵大空隙地层渗流通道的一种非常有效的方法。文中开展了富水条件下低热沥青浆液扩散性能和抗冲性能试验研究,揭示了低热沥青浆液在富水条件下的性能变化规律,该浆液具有良好的扩散能力,可基本满足在中等块石地层中灌浆孔排距对浆液扩散范围的要求。通过试验获得了不同流速条件下低热沥青的抗冲性能指标、并与速凝膏浆、水泥-水玻璃浆液进行了对比研究,采用低热沥青浆液进行封堵时,封堵率100%,封堵速度快,并且低热沥青-水泥基灌浆材料的复合灌浆弥补低热沥青结石体强度较低的不足。其成果可为类似工程提供有益的参考。

Experimental Study on the Flow Characteristics of Low Heat Asphalt Slurry in Rich Water Condition

Low heat asphalt grouting is a very effective method for pluging large-void formation seepage channels under moving water conditions .In this paper ,we analyzed the diffusion performance and impact resistance of low heat asphalt slurry under the condition of rich water ,and revealed the performance of low heat asphalt slurry under water-rich condi-tions .The results show that the slurry has a good diffuse ability ,it can meet the medium plug in the formation of grouting hole pitch on the slurry diffusion range requirements .In this test ,we obtained the impact resistance index of low heat as-phalt under different flow rate conditions .The results were compared with the quick-setting plaster slurry and the cement-water glass slurry with low heat asphalt slurry to plug ,the pluging rate is 100% and it is .The composite grouting of low heat asphalt-cement material grouting slurry make up the strength of low heat asphalt .The results can provide useful in-formation to similar projects .