提高探水钻孔套管加固技术措施研究  

Study on the Technical Measures to Improve the Casing Reinforcement of Water Exploration Drilling

作　　者：左龙飞 Zuo Long-fei(Sima Coal Company,Lu'an Group,Shanxi Changzhi 047105)

机构地区：[1]潞安集团司马煤业公司

出　　处：《山东煤炭科技》2019年第11期172-174,共3页Shandong Coal Science and Technology

摘　　要：为了提高采掘工作面探放水钻孔孔口套管安装质量,保证放水安全,探放水队分析1207巷掘进前期探放水钻孔套管加固期间主要存在的问题,通过施工校验钻孔确定钻孔深度为24m,采用"两堵一注"钻孔套管加固施工工艺,并采用注浆及安装"π"型钢棚进行放水煤壁维护,取得了显著成效。In order to improve the installation quality and ensure the safety of water drainage, the exploration and drainage team analyzed the main problems in the early stage of 1207 tunnel excavation. The drilling depth is determined to be 24 m through construction verification drilling, and the construction technology of "two blocks and one injection" drilling casing reinforcement is adopted, and the grouting and installation of "π" shaped steel shed are adopted for the maintenance of the drainage coal wall, and remarkable results are achieved.

关 键 词：探水钻孔 套管加固 煤屑量法 两堵一注 煤壁加固 

分 类 号：TD745[矿业工程—矿井通风与安全]