山东煤炭科技
山東煤炭科技
산동매탄과기
Shandong Coal Science and Technology
2014年
12期
40-42
,共3页
砂岩料石%稳定性%充填层%直墙厚度%复合支护
砂巖料石%穩定性%充填層%直牆厚度%複閤支護
사암료석%은정성%충전층%직장후도%복합지호
Sandstone ashlar%stability%iflling layer%vertical wall thickness%composite support
研究表明，拱顶易受拉最先破坏，巷道跨度增大时，拱顶传递到两直墙的载荷超过直墙极限承载能力，直墙将先于拱顶受压破坏；影响碹体稳定的因素有巷道的跨度、直墙厚度、料石强度和顶板对碹体载荷分布状态；柳林矿区5#煤层巷道采用砌碹支护时，跨度不宜超过直墙厚度的11.78（遇水时5.86）倍，在顶板应力不平衡时，不宜采用砌碹支护。
研究錶明，拱頂易受拉最先破壞，巷道跨度增大時，拱頂傳遞到兩直牆的載荷超過直牆極限承載能力，直牆將先于拱頂受壓破壞；影響碹體穩定的因素有巷道的跨度、直牆厚度、料石彊度和頂闆對碹體載荷分佈狀態；柳林礦區5#煤層巷道採用砌碹支護時，跨度不宜超過直牆厚度的11.78（遇水時5.86）倍，在頂闆應力不平衡時，不宜採用砌碹支護。
연구표명，공정역수랍최선파배，항도과도증대시，공정전체도량직장적재하초과직장겁한승재능력，직장장선우공정수압파배；영향선체은정적인소유항도적과도、직장후도、료석강도화정판대선체재하분포상태；류림광구5#매층항도채용체선지호시，과도불의초과직장후도적11.78（우수시5.86）배，재정판응력불평형시，불의채용체선지호。
The study showed that, the vault is susceptible to pull the ifrst failure, the span of roadway increases, the load that the vault is transferred to two straight wall also increase, when it exceed the ultimate bearing capacity of the straight wall, the straight wall will be compressed failure in the vault;inlfuence factors of the lining stability include the roadway span, straight wall thickness, strength and the roof load distribution state;Liulin Mining Area 5# coal roadway with arching support, span is not more than 11.78 times of straight wall thickness (water 5.86) , when the roof stress is imbalance, it is inappropriate to use the arching support.
