基于探地雷达的煤岩界面探测数据解释方法  

Data interpretation method of coal-rock interface detection based on ground penetrating radar

作　　者：苗曙光 刘晓文[1,3] 李淮江 王昕[1,3] MIAO Shuguang;LIU Xiaowen;LI Huaijiang;WANG Xin(School of Information and Control Engineering, China University of Mining and Technology,Xuzhou 221116, China;School of Physics and Electronic Information, Huaibei Normal University,Huaibei 235000, China;Internet of Things (Perception Mine) Research Center,China University of Mining and Technology, Xuzhou 221116, China)

机构地区：[1]中国矿业大学信息与控制工程学院,江苏徐州221116 [2]淮北师范大学物理与电子信息学院,安徽淮北235000 [3]中国矿业大学物联网(感知矿山)研究中心,江苏徐州221116

出　　处：《工矿自动化》2019年第1期35-39,共5页Journal Of Mine Automation

基　　金：国家重点研发计划资助项目(2017YFC0804400);国家重点基础研究发展计划(973计划)资助项目(2014CB046305);安徽省第七批"115"产业创新团队项目(皖人才[2014]4号);淮北市第三批"555"产业创新团队项目(淮人才字[2013]2号)

摘　　要：针对现有煤岩界面识别方法缺乏对煤岩层特性的研究、无法对数据进行较好解释的问题,结合基于探地雷达的煤岩界面探测模型,提出了一种煤岩界面探测数据解释方法,即采用一种改进的最大类间方差法,在二维灰度直方图下对探地雷达探测的煤岩图像进行阈值化分割,从而实现煤岩界面识别。通过仿真实验研究了探地雷达天线频率对可探测煤层厚度的影响,结果表明随着天线频率增大,理论可探测最大煤层厚度减小;采用LTD-2100型探地雷达,设置400 MHz天线频率进行现场测试,结果表明基于探地雷达的煤岩界面探测数据解释方法可提高煤岩界面识别准确性。For problems that existing coal-rock interface identification methods lacked research on characteristics of coal-rock seam and were unable to interpret data well,a data interpretation method of coal-rock interface detection was proposed combining with coal-rock interface detection model based on ground penetrating radar(GPR).The method uses an improved OTSU to take out threshold segmentation of coal-rock image from GPR under2D gray histogram,so as to realize coal-rock interface detection.Influence of GPR antenna frequency on detectable coal seam thickness was researched by simulation experiment.The results show that the maximum detectable coal seam thickness in theory would decrease with increase of antenna frequency.Field test was taken out by use of LTD-2100type GPR with400MHz antenna frequency.The test results show that the data interpretation method of coal-rock interface detection based on GPR can improve accuracy of coal-rock interface identification.

关 键 词：煤炭开采 无人工作面 煤岩界面识别 煤岩界面探测 探地雷达 数据解释 图像分割 最大类间方差法 

分 类 号：TD67[矿业工程—矿山机电]