摘要
选取陕西彬长胡家河煤矿,应用锚杆无损检测仪对井下锚杆、锚索锚固质量进行了检测。从抽检的48根锚杆(索)检测结果来看:大部分锚固长度为正常水平,少数存在锚固长度偏小或不足现象;锚固状态为优的锚杆(索)占总抽检测数的43.75%,良好占总抽检测数的39.58%,不合格占总抽检测数的16.67%,未出现断裂现象;巷道总体支护状态为良的占总抽检数的20.83%,合格占总抽检测数的68.75%,不合格占总抽检测数的6.25%。
Selected Shaanxi Binchang Hujiahe coal mine, the application of bolt nondestructive testing instrument for underground bolt, anchor cable anchorage quality detection. Sampling of 48 bolts （anchors） test results from the point of view： most of the anchorage length to normal levels, few existing anchorage length smaller or less phenomenon; anchoring state for optimal anchor bolt, accounted for the total pumping number detection of 43.75% and good accounted for total pumping detecting several 39.58%, unqualified accounted for the total pumping 16.67% of the number of detection, temporarily not appear fracture phenomenon; roadway general branch of state support for the good of the total number of sampling 20.83% ,qualified accounted for total pumping detecting several 68.75% ,unqualified accounted for the total pumping number detection of 6.25%.
出处
《煤炭技术》
CAS
北大核心
2017年第4期76-77,共2页
Coal Technology
基金
陕西省工业科技攻关项目(2016GY-183)
关键词
应力波
锚固质量检测
锚固状态
支护状态
stress wave
anchorage quality detection
anchoring state
support state
