2012年8月上施工技术 第41卷第370期CONSTRUCTION TECHNOLOGY79
深部高应力动压巷道支护方法研究
宋锦虎"，魏思祥²，靖洪文”，王冲，李哲豪4 3.中国矿业大学深部岩土力学与地下工程国家重点实验室，江苏徐州221008； 4.河南城建学院土木与材料工程系，河南平顶山467044） [摘要】深部高应力巷道的支护方法是目前的工程难点问题。
中平能化集团十二矿31010己15煤层皮带巷和回风 巷埋深超过1000m，同时将承受上部保护层开采的动压作用，巷道稳定性不易控制。
首先通过地应力测试和围岩 松动圈测试，得知巷道为高地应力环境下大松动圈巷道；之后通过三维数值计算分析，获得了上部保护层开采过程 中下部巷道的矿压显现规律，得知巷道将受到高应力动压作用。
针对此巷道高应力动压特点采用卸压让压以及高 强锚索的联合支护方法，即在围岩卸压让压的基础上采用高强锚索进行加强支护，同时采用单体柱进行局部临时 加强支护。
现场工业试验结果说明卸压让压以及高强锚索组成的联合支护系统可用于深部高应力动压巷道的稳 定性控制。
[关键词］巷道；支护；动压；卸压让压；锚索 [中图分类号】TU929【文献标识码】A[文章编号]1002-8498(2012)15-0079-05 Analysisof theSupportMethodforDeepRoadwithHighStress Level DynamicPressure Song Jinhu'，Wei Sixiang²，Jing Hongwen”，Wang Chong”，Li Zhehao* （1.Institute of GeotechnicalEngineering，Southeast University，Nanjing，Jiangsu 210096，China; 2.No.12 Mine, Pingdingshan Coal Co.，Ld.,Pingdingshan, He'nan 467044,China; 3.State Key Labof Deep Rock and SoilMechanics and Underground Engineering，China University ofMining and Technology，Xuzhou，Jiangsu221008,China;4.Department of CivilandMaterialEngineering， He'nan University ofUrban Construction，Pingdingshan,He'nan 467044，China) Abstract:The pulley roadway and return airway of the Twelvth Mining of Pingdingshan Colliery Group Co.，Ltd. in the 31010 area are buried at more than 1 000 meters deep. And they are subjected to the dynamic pressure of the protection seam mining. By testing， they were found to be the deep roadway in soft rock with high stress level dynamic presure，for which the supporting scheme should be specially designed. The level of dynamic pressure was obtained by three-dimensional numerical calculation. And release and high strength rock bolts were used. Single columns were used locally to provide temporary support at extremely vulnerable locations. The field monitoring data shows that the pressure release method bined with the use of high strength rock bolts can successfully maintain the stability of the Key words:roadway; supports; dynamic pressure; pressure release; anchoring c...
