采场覆岩变形分布式光纤测量研究

发布时间：2018-01-11 22:36

  本文关键词：采场覆岩变形分布式光纤测量研究　出处：《煤炭科学技术》2017年10期 　论文类型：期刊论文

  更多相关文章： 相似材料模拟试验 分布式光纤传感技术 覆岩移动变形 空间分辨率

【摘要】：为了研究分布式光纤传感技术在采场相似材料模拟试验检测中的适用性,将BOTDA和PPP-BOTDA两种分布式光纤传感技术应用于采场相似材料模拟试验覆岩移动变形的测量。在模型内水平埋设2根传感光纤用于检测岩层变形,试验分2个阶段进行,分别采用不同的分布式光纤传感技术测量岩层移动变形,并将二者的测量结果与岩层移动状态、百分表、全站仪、岩层垮落宽度进行了对比分析。试验表明,分布式光纤传感技术能够实现采场相似材料模拟试验的分布式测量,其结果能和岩层移动状态、百分表、全站仪良好对应,岩层垮落宽度测量准确;仪器空间分辨率直接影响模型试验测量结果准确性,具备高空间分辨率的PPP-BOTDA分布式光纤传感技术更适用于相似材料模拟试验的分布式测量。
[Abstract]:In order to study the applicability of distributed optical fiber sensing technology in the simulated test of stope similar materials. Two distributed optical fiber sensing techniques, BOTDA and PPP-BOTDA, are applied to measure the movement and deformation of overburden in the simulation test of stope similar materials. Two sensing optical fibers are embedded horizontally in the model to detect the strata. Deformation. The experiment is divided into two stages. Different distributed optical fiber sensing techniques are used to measure the displacement and deformation of rock stratum, and the results of the measurement and the state of rock layer movement, percentile and total station are presented. The results show that the distributed optical fiber sensing technology can realize the distributed measurement of similar material simulation test in stope, and the results can be compared with the rock strata moving state and percentile table. The total station has a good correspondence, and the width of rock collapse is accurate. The spatial resolution of the instrument directly affects the accuracy of the measurement results of the model test. The PPP-BOTDA distributed optical fiber sensing technology with high spatial resolution is more suitable for the distributed measurement of the simulation test of similar materials.
【作者单位】： 西安科技大学能源学院;中煤科工集团重庆研究院有限公司;西部矿井开采及灾害防治教育部重点实验室;
【基金】：国家自然科学基金资助项目(41027002;51174280) 高等学校博士学科点专项科研基金资助项目(20126121110003)
【分类号】：TD325;TN253;TP212
【正文快照】： 3.西部矿井开采及灾害防治教育部重点实验室,陕西西安710054)引用格式:王正帅,柴敬,黄旭超,等.采场覆岩变形分布式光纤测量研究[J].煤炭科学技术,2017,45(10):196-202.WANG Zhengshuai,CHAI Jing,HUANG Xuchao,et al.Research on overlying strata deformation based on distr，

本文编号：1411568