预应力注浆锚索加固复合型顶板及堵水技术实践

Prestressed Grouting Anchor Cable Reinforced Complex Roof and Water Shut-Off Technology Practice

通过对红柳煤矿2煤辅运大巷淋水段进行打眼疏水,布置一序预应力注浆锚索孔以及在注浆锚索排距之间布置二序加密注浆钻孔,从整体上对2煤辅运大巷支护方式进行了改进,从而使巷道条件得到较大改善。同时,注浆锚索长度、注浆孔间排距、注浆压力等参数必须根据岩石力学特性具体选择合适的参数。红柳煤矿今后将加大对注浆锚索的技术研究,为矿井复合型顶板支护提供可靠的技术保障。

Through drilling and drainage of the water dripping section of the auxiliary transport roadway of Hongliu Coal Mine,a sequence of prestressed grouting anchor cable holes are arranged and two rows of grouting drilling holes are arranged between the grouting anchor cables.On the whole the support of 2 auxiliary transport roadway has been improved,so that the roadway conditions are greatly bettered.At the same time,to choose the right parameters,the length of grouting anchor cable,distance between the rows of grouting hole,grouting pressure and other parameters must be based on the specific mechanical properties of rock.Hongliu Mine will increase the research into grouting anchor cable technology in the future so as to provide reliable technical guarantee to the complex roof support.