based on the field test of immature earthen sites reinforced with the wood anchor and ps serosity. the different ps serosity material had little influence to the bolting force of the wood anchor.
introduce the confecting of cement serosity mud-jack equipment and construction points according to engineering examples, the brood value owing to using fewer workers, less material and its low cost.
field experiment was conducted to investigate the applying effect of biology silicon fertilizer to the soil fertility on serosity soil.
通过田间试验研究了在白浆土上施用生物硅肥的对土壤肥力的影响。
alleviating subsidence by injecting serosity is a new coal mining method.
减沉注浆是一种新型的煤矿开采方法,它能够减缓地面的沉降。
besides , it's feasible to crack mend when distortion is requested to use the right amount of 660 diluter which can increase toughness of the serosity .
the experiment results show that adding a little amount paa to the ammonium hydroxide can increase the sedimentation rate and improve the filtrate rate of adu serosity evidently.