隧道围岩多元钻进信息高精度同步采集技术研究  

High Precision Synchronous Collection Technology for Multiple Drilling Information of Tunnel Surrounding Rocks

作　　者：黄柱安 HUANG Zhu′an(China Railway Construction Heavy Industry Co.,Ltd.,Changsha 410100,Hunan,China)

机构地区：[1]中国铁建重工集团股份有限公司,湖南长沙410100

出　　处：《隧道建设(中英文)》2024年第S2期352-360,共9页Tunnel Construction

基　　金：国家重点基础研究发展计划(2021YFB2301001)。

摘　　要：为获得能更加精准反映隧道围岩特征的钻进信息,提出一种隧道围岩多元钻进信息采集技术方案。首先,介绍钻进信息采集直接测量、间接测量和拟合计算及设备通讯实施方案;然后,总结钻进信息采集技术多元性、高精度性、同步性和可视化特点;最后,按系统设定的冲击压力、推进压力、采样频率和深度分辨率分组进行钻进测试试验。结果表明:1)钻进信息采集技术方案合理,满足设备时域最大采集频率为100 Hz、钻进深度最小分辨率尺度为1 mm的需求;2)钻进信息采集高精度性在围岩小裂隙产状识别中起到关键作用,隧道围岩钻进信息采集同步性在数据采集响应中起到关键作用;3)隧道围岩多元钻进信息高精度同步采集技术可为随钻测量参数与围岩信息之间的关系建立提供理论基础。A collection technical scheme for multiple drilling information is proposed to obtain the drilling information which can more accurately reflect the characteristics of tunnel surrounding rocks.First,the implementation plans of direct measurement,indirect measurement,fitting calculation,and equipment communication are introduced.Then,the diversity,high precision,synchronicity,and visualization characteristics of drilling information collection technology are summarized.Finally,drilling tests are carried out in groups according to the impact pressure,propulsion pressure,sampling frequency,and depth resolution set by the system.The results indicate that:(1)The drilling information collection technical scheme is reasonable,which can meet the requirements of a maximum time-domain acquisition frequency of 100 Hz and a minimum resolution scale of 1 mm for drilling depth.(2)The high precision of drilling information collection plays a key role in identifying the occurrence of small cracks in the surrounding rock,and the synchronization of tunnel surrounding rock drilling information collection plays a key role in data collection response.(3)The high-precision synchronous acquisition technology of multi-dimensional drilling information in tunnel surrounding rock provides a theoretical basis for establishing the relationship between measurement parameters while drilling and surrounding rock information.

关 键 词：隧道围岩 多元钻进信息 采集技术 随钻测量参数 分辨率 

分 类 号：U455[建筑科学—桥梁与隧道工程]