HUA Xin-zhu, XIE Guang-xiang. Research on grouting material for bolt and grouting reinforcement of soft rock tunnel and its application[J]. 2004, 25(10期 刊出日).
HUA Xin-zhu, XIE Guang-xiang. Research on grouting material for bolt and grouting reinforcement of soft rock tunnel and its application[J]. 2004, 25(10期 刊出日).DOI:
Bolt and grouting reinforcement is an ideal measure for improving performance of bearing capacity of soft surrounding rock around tunnel in soft rock. Based on the test and research for fluidity,performance of separating water and compressive strength of fly ash and cement grouting material in laboratory,grouting material with a proper mixture rate is found (fly ash colume fraction is less thom 20 %
water to cement ratio is from 0.65 to 0.70) An engineering practical example is given that fly ash and cement grouting has been used in very soft rock roadway at the Xinji NO.3 mine in Huainan.