Research on a New Composite Sealing Material of Gas Drainage Borehole and Its Sealing Performance
Aiming at the shortcomings of the traditional sealing materials of borehole for gas suction such as yellow mud and cement-sand grout, which indicated that the traditional sealing materials of borehole are easy to shrink after sealing, the sealing length of borehole is short and the sealing quality is not satisfactory, and the sealing price of the high-water material and polyurethane are also high. In this study, taking cement as a base material, a new composite sealing material mixed by expansion admixture, additive, fibrin and coupling agent was developed and the sealing performance and expansion performance of the material were also studied and analyzed. At the same time, the microscopic image handling system was used to investigate the microcosmic structure of material. The studying results showed that the new composite sealing material possessed a good expansion performance and a definite fluidity convenient for grouting. The material after solidification could combine closely with the borehole wall, and there was certain strength and it was not easy to shrink. Additionally, the suction gas concentration by borehole sealing exceeded 40％. It can be seen that the sealing performance of the composite sealing material is advantageous.
Composite sealing material Sealing characteristics Gas suction Borehole sealing
Cheng Zhai Zhiyong Hao Baiquan Lin
State Key Laboratory of Coal Resources and Mine safety, CUMT, Xuzkou, Jiangsu, Chian, 221116 Faculty of Safety Engineering, China University of Mining & Technology. Xuzhou, Jiangsu, 221116
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1171-1181
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）