厚煤层沿空巷道静态及动态叠加围岩控制技术研究
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摘要
为保证80101工作面回风巷在沿空掘巷及工作面回采期间的围岩稳定,针对回风巷的具体地质条件,在沿空掘巷阶段采用静态支护手段,工作面回采阶段,在原有支护的基础上采用动态叠加支护,对煤柱帮进行锚注加固,对实体煤帮打设卸压孔。结果表明,沿空巷道围岩的变形量得到了有效控制。
In order to ensure the surrounding rock stability of return air roadway in 80101 working face during goaf driving and working face mining, static support method is adopted in the stage of roadway excavation along the goaf according to the specific geological conditions of return-air roadway. In the mining stage, dynamic superposition for support is applied on the basis of the original support, coal pillars are reinforced by bolting and grouting, and pressure relief holes are set for entity coal. The results show that the deformation of the surrounding rock in the roadway is effectively controlled.
In order to ensure the surrounding rock stability of return air roadway in 80101 working face during goaf driving and working face mining, static support method is adopted in the stage of roadway excavation along the goaf according to the specific geological conditions of return-air roadway. In the mining stage, dynamic superposition for support is applied on the basis of the original support, coal pillars are reinforced by bolting and grouting, and pressure relief holes are set for entity coal. The results show that the deformation of the surrounding rock in the roadway is effectively controlled.
引文
[1]杨英明.动力扰动下深部高应力煤体冲击失稳机理及防治技术研究[D].北京:中国矿业大学,2016.
[2]杨永刚,张海燕,甘犬财.深井高地压沿空巷道围岩变形机理与支护技术研究[J].煤炭工程,2012(06):76-79.
[3]陈庆敏,陈学伟,金泰,等.综放沿空巷道矿压显现特征及其控制技术[J].煤炭学报,1998(04):48-51.
[4]代进,王春耀,李逢祥.大采高小煤柱沿空巷道大变形机理与支护技术研究[J].煤炭工程,2018,50(03):37-41+46.
[2]杨永刚,张海燕,甘犬财.深井高地压沿空巷道围岩变形机理与支护技术研究[J].煤炭工程,2012(06):76-79.
[3]陈庆敏,陈学伟,金泰,等.综放沿空巷道矿压显现特征及其控制技术[J].煤炭学报,1998(04):48-51.
[4]代进,王春耀,李逢祥.大采高小煤柱沿空巷道大变形机理与支护技术研究[J].煤炭工程,2018,50(03):37-41+46.