摘要
为了较好地解决矿井内孤岛煤柱开采过程中高应力巷道的支护问题,保证采准巷道的有效断面和使用安全,探讨了预拉力锚杆支护的特性及支护原则,支护参数、施工工艺对巷道支护效果的影响,以及相关的配套监测系统,提出了采用高强预拉力锚梁网支护技术对巷道进行支护。结果表明:应用高强预拉力锚梁网支护技术后,巷道表面移近量在20天以后趋于稳定,顶板离层稳定在40 mm以内,两帮移近量保持在350 mm以内,底鼓量不超过300 mm,均达到技术要求。高强预拉力锚梁网支护技术能有效的对高应力巷道的顶帮进行管理,有助于提高支护效果和经济效益。
In order to well solve the support problems of high tension gateway during the coal pillars mining in island coal seam and ensure effective section and safety of preparation gateway,the paper discussed the support results and effects of support features,principles,construction technology and relative matching monitoring system for pre-tensioned bolt/beam/steel mesh support.High strength pre-tensioned bolt/beam/steel mesh support technology for gateway was put forward to support gateway.The results showed th...
出处
《煤炭科学技术》
CAS
北大核心
2008年第12期6-8,42,共4页
Coal Science and Technology
关键词
孤岛煤柱
采准巷道
高强预拉力锚杆
支护
coal pillars in island seam
preparation gateway
high strength pre-tensioned bolt
support
