锚索在大直径深孔采矿法采场顶板加固中应用  

An application of anchor bolts for the roof strengthening of the large diameter long hole stoping process

作　　者：许爱荣 XU Airong

机构地区：[1]新疆哈巴河阿舍勒铜业股份有限公司,新疆维吾尔自治区哈巴河县836700

出　　处：《中国矿山工程》2021年第3期20-22,29,共4页China Mine Engineering

摘　　要：阿舍勒铜矿为进行安全高效开采,运用高阶段大直径深孔采矿方法,通过调查围岩岩层特征及潜在冒落形式,采用长锚索对采场顶板进行支护设计。现场试验表明,受地质条件影响顶板存在两种潜在冒落风险,冒落形式为从中部向两侧,从下往上。同时确定了锚索的支护形式并通过经验公式计算了锚索支护参数,其主要参数为长度10~12 m、间排距2 m及钻孔直径约为锚索直径的2~3倍。通过现场工业试验表明使用长锚索对顶板进行加固,不仅能够使采场顶板得到控制,同时大大增加了支护经济效益。To achieve safety and high efficiency,the high-level large diameter long hole stoping process is adopted in Ashele Copper Mine.After investigating the country rock conditions and the potential forms of roof falling,long anchor bolts were adopted for the roof support design.Field testing revealed two types of falls,which are from the middle to sideways,and from down upwards.The form of anchor bolt support and support parameters were then determined:anchor bolts are 10-12 m long,row intervals are at 2 m,drill hole diameter 2-3 times as long as the anchor bolt diameter.Field pilot tests showed such support not only provides good control of the roofs,but significantly boosts economic benefits as well.

关 键 词：长锚索 方案设计 大直径 深孔采矿法 采场顶板 

分 类 号：TD862[矿业工程—金属矿开采]