HamiEnergy Company Limited.Xuzhou Coal Mining Group National Key Lab of Coal Resources and SafetyMining,China University of Mining and Technology School of Mining Engineering,China university of Mining and Technology MOE Key Lab of Deep Coal Resource Mining,China University of Mining and Technology

为了解决大南湖西五矿围岩胶结性差、顶板含水量大导致巷道支护困难的问题,采用现场实测与数值模拟相结合的方法,进行了现场锚固性能测试,分析了随顶板岩层含水量增加,采用架棚支护、锚杆支护和锚杆锚索联合支护3种支护方式时巷道围岩变形规律和支护体受力特征。研究结果表明:在现场围岩条件下锚杆、锚索可以达到规定的拉拔力;顶板含水量较大时采用架棚支护围岩变形严重,梯形棚发生结构性失稳,而锚杆锚索联合支护可以有效减弱在水作用下锚杆轴向力的降低,大幅减小围岩变形。现场观测结果显示锚杆锚索联合支护围岩控制效果显著。

in order to solve the mine roadway suppor oifiut problem caused by the poor consolidated surounding rock and igh roof water content in Dananhu Xiwu Mine,a ste measuring and numercal sinulation combined method was applied tothesite bolting reinfrcement peromances 'est and to analze the surounding ock deformation law and suppor sressed features with the roof stra a water content increased when three support modes ofthe square suppor.oit support and bolt and anchor combined suppot were applied. The studyresuts showed that underthe co dtin ofthesite surcunding roc.k.the boft and anchor could reach the sipulated puling force. When the oo water con1ent was high.due to the spuare suport applied,thedeformatin of the surounding rock was serious and the square supports had hestructure staililt lost occured.,but the baoit and anchor combined support coul ef cively reduce the axal force decreased under the funtion of water and coud highly reduce the deformation of the surounding rock. Theste obseration results showed that the control efect of the surounding rock was obvious when the boft andanchor combined support applied.

国家自然科学基金资助项目(51574227)；