深部复杂地层大直径煤仓支护技术  

Support Technology of Large Diameter Coal Bunker in Deep Complicated Strata

作　　者：信长伟 马军杰 XIN Chang-wei MA Jun-jie(Shandong Xinhe Mining Company Limited ,Zibo Mining Group Corporation ,Ji~ ning 272400,Chin)

机构地区：[1]淄博矿业集团公司山东新河矿业有限公司,山东济宁272400

出　　处：《建井技术》2016年第4期9-10,22,共3页Mine Construction Technology

摘　　要：新河煤矿-980m水平煤仓埋深达1 000m,其围岩主要为砂岩与泥岩组合,仓体恰好穿过1条落差30m的正断层,反井钻孔施工后,断层处有少量涌水。煤仓荒直径11m,掘进断面达95m^2,容积1 600m^3。针对现场具体情况,煤仓选用锚网梁索注+钢筋混凝土砌碹联合支护方式;特别是煤仓上、下锁口段,采用了高强混凝土梁板结构,从而确保了煤仓永久支护安全。A-980 mhorizontal coal bunker in Xinhe Mine had a deep depth of 1 000 m.The surrounding rock mainly was the combination of sandstone and mudstone.The bunker was just passed through a normal fault with a drop of 30 m.After the drilling operation of the mine raise,some water inflow occurred from the fault.The boring diameter of the coal bunker was 11 m,the excavation cross section was 95m^2 and the volume was 1 600m^3.According to the site certain conditions,a combined support method with the bolt/steel mesh/beam/anchor/grouting＋reinforced concrete lining was applied to the coal bunker.Especially at the top and bottom lock sections of the coal bunker,a high strength concrete beam slab structure was applied to ensure the permanent support safety of the coal bunker.

关 键 词：深部复杂地层 大直径煤仓 锚网梁索注 钢筋混凝土砌碹 联合支护 

分 类 号：TD264.4[矿业工程—矿井建设]