高地应力大断面软岩隧道开挖技术研究

以锦屏二级水电站引水隧洞工程为依托,对高地应力大断面软岩隧道的开挖技术进行探讨,认为开挖方法的选择、掌子面预支护的布置、弱爆破参数控制、相关监测技术的应用这4个方面是软岩隧道开挖必须重视的地方。锦屏引水隧洞软岩段的开挖,证明了在采用合理的掌子面预支护措施后,可以实现大断面(112 m2)开挖,其开挖进度比分块施工快,且施工组织方便灵活、成本也相对较低。

Online RGB-D person re-identification based on metric model update

Person re-identification （re-id） on robot platform is an important application for human-robot- interaction （HRI）, which aims at making the robot recognize the around persons in varying scenes. Although many effective methods have been proposed for surveillance re-id in recent years, re-id on robot platform is still a novel unsolved problem. Most existing methods adapt the supervised metric learning offline to improve the accuracy. However, these methods can not adapt to unknown scenes. To solve this problem, an online re-id framework is proposed. Considering that robotics can afford to use high-resolution RGB-D sensors and clear human face may be captured, face information is used to update the metric model. Firstly, the metric model is pre-trained offline using labeled data. Then during the online stage, we use face information to mine incorrect body matching pairs which are collected to update the metric model online. In addition, to make full use of both appearance and skeleton information provided by RGB-D sensors, a novel feature funnel model （FFM） is proposed. Comparison studies show our approach is more effective and adaptable to varying environments.

高速铁路隧道机械化修建技术创新与智能化建造展望——以郑万高速铁路湖北段为例

为实现郑万高速铁路湖北段隧道安全、快速、高质量修建,开展全工序型机械配套条件下的施工技术、结构设计和信息化管理等一系列探索和创新:1)形成一套基于大型机械化的超前地质预报、掌子面超前预加固、隧道全断面机械开挖工法、初期支护机械化施工、宽幅防水板作业台车铺装和智能衬砌台车的全断面机械化施工技术;2)基于机械化施工技术,建立隧道围岩稳定性分级方法,并在新奥法理念指导下,优化隧道支护结构设计参数;3)建立隧道施工管理系统、施工信息采集系统、施工安全管理系统、混凝土拌合站质量管理系统、质M信誉评价系统以及施工动态管理系统等,以对隧道施工进行信息化管理。最后,在隧道机械化、信息化修建技术的基础上,从隧道支护体系智能动态设计系统、隧道支护体系智能机器人施工技术和隧道结构智能化监测系统等方面对隧道智能化修建技术进行探索和展望,以期将我国隧道建设水平推向新高度。

人脸识别技术在浙江广电的应用实践

近年,大数据、云计算、人工智能等技术不断融合创新,人脸识别作为人工智能的一项重要应用,也得到了飞速发展,其准确率也得以在众多领域得到实践应用。文章介绍了人脸识别技术在浙江广播电视集团的应用实践。