软岩大断面硐室联合支护技术应用

The Combined Support Technique Used in Soft Rock and Large Cross Section Chamber

以临县华烨煤业有限公司中央泵房变电所一次支护为例,采用现场实测、理论分析等方法,分析了该硐室的破坏原因和控制机理,指出通过采用U型钢、锚网喷、锚注和锚索联合支护技术,成功地解决了高应力软岩巷道永久支护问题。

Taking the first support of the central pump room’s substation of Huaye Coal Limited Company of Linxian County as an example, and by adopting the field measurement, theoretical analysis and other methods, this paper analyzes the damage causes and control mechanism of this chamber, and points out that adopting the combined support technique of u-section steel, bolt-mesh-spurting, bolt-grouting and anchor wire has successfully solved the permanent support problem in high stress and soft rock roadway.