文献类型：期刊文献

英文题名：Migration Characteristics of Boring Mud in Roadway Floor Anchor Wire Hole and Test in Coal Mine

作者：Zhang, Hui Han, Weihai Xu, Youlin Zhu, Mengzhi Liu, Zhanyang Wang, Zhenfeng

第一作者：张辉;Zhang, Hui

通信作者：Xu, YL[1]

机构：[1]Henan Polytech Univ, Sch Energy Sci & Engn, Jiaozuo 454000, Henan, Peoples R China;[2]Guizhou Inst Technol, Inst Min Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Henan Polytech Univ, Sch Energy Sci & Engn, Jiaozuo 454000, Henan, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Inst Min Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2021

卷号：2021

外文期刊名：ADVANCES IN CIVIL ENGINEERING

收录：;Scopus(收录号：2-s2.0-85104476004);WOS:【SCI-EXPANDED(收录号:WOS:000641607900004)】；

基金：This work was supported by the National Natural Science Foundation of China (51764010, 51874109) and the Science and Technology Project for Outing and Young Talents of Guizhou (Talents of Science Platform in Guizhou [2019] 5674).

语种：英文

摘要：Given the difficulty in drilling the anchor holes in the roadway floor of the coal mine, the characteristics of slag movement in the process of positive and negative circulation drilling are analyzed. It is concluded that the interaction between the three zones of drilling and slag is the fundamental reason restricting the rapid drilling of the anchor cable hole in the floor, and it is proposed that the pump reverse circulation drilling can effectively prevent the formation of the three zones of drilling and slag. According to the actual situation, the relationship between drilling depth, vacuum degree of the pump, and the velocity of drilling fluid and the volume of drilling slag is obtained. The results show that the pump suction reverse circulation is feasible for the rapid drilling of the anchor hole of the floor. A set of pump suction reverse circulation drilling systems has been developed, and floor anchor wire hole drilling and slag discharge operation at the same time were realized. The field test shows that the effective drilling time of the anchor cable hole in the depth of 5.6 m can be controlled within 30 min, which solves the problem of deep hole drilling in the anchor hole of the bottom plate and purifies the working environment.