摘要
依托经坊煤业“三软煤层”3-8052顺槽支护工程实际,采用现场调研的方法对在原有支护形式下的巷道破坏进行了分析,利用现场钻孔窥视的方法,确认了巷道围岩破坏深度。提出了“二次塑巷+锚索网非对称”联合支护方式,对巷道围岩破坏程度进行了现场原位钻孔窥视,在工作面回采期间,对巷道表面位移进行了监测,巷道表面位移处于安全使用范围之内,有效保障了巷道的稳定性。
Based on the practice of 3-8052 trench support project in Jingfang Coal Industry, the damage of roadway under the original support form was analyzed by field investigation method, and the damage depth of roadway surrounding rock was confirmed by field borehole peep method. The combined support method of "secondary plastic roadway + unsymmetrical anchor cable net" is put forward. The damage degree of surrounding rock of roadway is observed by in-situ boreholes. During the mining period of working face, the surface displacement of roadway is monitored. The surface displacement of roadway is within the safe range of use, which effectively guarantees the stability of roadway.
作者
韩涛
Han Tao(shanxi changzhi jingfang coal industry co., LTD., changzhi 047100, China)
出处
《江西煤炭科技》
2019年第2期188-190,193,共4页
Jiangxi Coal Science & Technology
关键词
“三软煤层”
钻孔窥视
现场调研
“二次塑巷+锚索网非对称”联合支护
巷道支护
"Three Soft Coal Seams"
Borehole Peeping
Field Investigation
"Secondary Plastic Roadway + Asymmetric Anchor Cable Net" Joint Support
Roadway Support
