掘进巷道顶板岩层随钻识别研究  

Study on identification along with drilling of roof strata of excavation roadway

作　　者：陈加胜[1] 邓海顺[1] 高明中[2] 成云海[2] 王传礼[1] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001 [2]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《采矿与安全工程学报》2016年第2期271-277,共7页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51174002);安徽省科技攻关项目(1301022074)

摘　　要：为了在巷道掘进过程中随时识别顶板岩层,提出一种通过检测锚杆钻机液压系统的压力和流量来探测巷道顶板岩层的方法;推导出顶板岩层随钻探测的钻进参数计算公式;研制了顶板岩层随钻识别试验系统,并将随钻识别试验数据与单轴抗压强度试验数据进行比较分析。研究表明:1)当检测到锚杆钻机液压系统中的压力和流量发生阶跃响应或脉冲响应时,可以判断钻头通过了顶板岩层分界面或软弱夹层;2)实验测得钻头穿过软弱夹层时,钻进速度的最大值与最小值之比为12.4,表明钻进速度在几种钻进参数中是最敏感的;3)通过检测锚杆钻机液压系统的压力和流量可以推算出顶板各岩层强度和层位。In order to identify roof strata in the process of excavation, a measurement method used to detect roof strata by means of pressure and quantity of flow in hydraulic system of bolter has been presented. Calculation formulas of drilling parameters have been deduced. Test system has been built to detect roof strata along with drilling. Drilling data have been compared and analyzed with uniaxial compressive strength（UCS）. The research results have shown that： 1） It can be inferred that drills bit has passed though rock interface or weak interlayer accordingly while a step or pulse change of pressure and flow in hydraulic system of bolter has been detected. 2） Tests have measured that the ratio of maximum and minimum value of penetration rate is 12.4 when drills bit passing through weak interlayer, which has shown that penetration speed is the most sensitive one among several drilling parameters. 3） Strata strengths and position of roof strata can be calculated by detecting pressure and flow in hydraulic system of bolter.

关 键 词：顶板岩层 掘进巷道 随钻识别 软弱夹层 

分 类 号：TD313[矿业工程—矿井建设]