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光纤光栅测力锚杆在煤矿巷道围岩监测中的应用

发表时间:2015-08-31  浏览量:1540  下载量:599
全部作者: 吕创新,阚甲广,马亚军,张文德
作者单位: 中国矿业大学矿业工程学院;中国矿业大学外国语言文化学院
摘 要: 结合朱集矿1111(1)工作面运输顺槽工程,提出光纤光栅传感器杆体内的布置方法及其围岩监控系统安装与调试的具体步骤,分析巷道围岩监控系统的工作原理,总结锚杆应力场与巷道围岩温度场的分布和变化趋势。结果表明:锚杆应力分布呈现非均匀性、波动性和多样性。锚杆初期应力分布曲线可分为增长型、降低型和波浪型三类,且增长型具有理想的锚杆承载特性。部分锚杆杆体内存在弯矩,锚杆各段的应力随着开采扰动的增强而增长。围岩温度随着距巷道壁面距离的增加而递减,浅部围岩温度随时间变化较大,且呈现出先快速递减后逐渐趋于平稳的变化特征。
关 键 词: 信息科学与系统科学基础学科其他学科;光纤光栅传感器;巷道围岩监控系统;锚杆应力场;围岩温度场
Title: Application of fiber grating dynamometry bolt in coal mine tunnel surrounding rock monitoring
Author: LÜ Chuangxin, KAN Jiaguang, MA Yajun, ZHANG Wende
Organization: School of Mines, China University of Mining and Technology; School of Foreign Studies, China University of Mining and Technology
Abstract: According to the conveyer gate roadway project of 1111(1) working face in Zhuji coal mine, layout in the fiber grating sensor bolt, the installation and adjustment steps for surrounding rock monitoring and control system were proposed. Working principle of the monitoring and control system were analyzed, and the distribution and changing trend of bolt stress field and surrounding rock temperature field were summarized. Results show that the distribution of bolt stress is characterized by heterogeneity, volatility and diversity. The initial roof bolt stress distribution curve can be divided into three types, which are the increasing curve, decreasing curve and waving curve, respectively. Among the three, the increasing curve shows a desirable bearing behavior. Bending moment exists in partial bolts. Stress in different parts of bolt increases with the growth of mining disturbance. The temperature of surrounding rock decreases with the increase of the distance to surrounding wall. The temperature of the shallow rock changes significantly over time, showing a feature of first decreasing rapidly and then tending to be stable.
Key words: other subjects of basic subject of information science and system science; fiber grating sensor; tunnel surrounding rock monitoring system; bolt stress field; surrounding rock temperature field
发表期数: 2015年8月第16期
引用格式: 吕创新,阚甲广,马亚军,等. 光纤光栅测力锚杆在煤矿巷道围岩监测中的应用[J]. 中国科技论文在线精品论文,2015,8(16):1750-1760.
 
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