The damage during hydraulic fracturing mainly included clay swelling and grain migration, built up created by mechanical impurities, the damage of fracture conductivity and so on.
水力压裂过程中存在的损害主要包括粘土膨胀与颗粒运移损害、机械杂质引起堵塞损害、支撑裂缝导流能力的损害等。
After being treated by vacuum preloading, the physical mechanical indexes of the soft clay and the strength and bearing capacity of the soil were improved obviously.
真空预压后，软土的物理力学指标有较为明显的改善，土体强度增长明显，承载力有较大提高，软基处理取得了良好效果。
The results indicated, when compared to the pure epoxy resin, that the mechanical and thermal properties of the nanocomposite could be greatly improved by addition of low clay loading.
结果表明，少量蒙脱土的加入可以较大地提高材料的力学性能和耐热性能，对环氧树脂同时起到了增韧增强的作用。
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