A Laser-Based Device for Work Site Stability Assessment

描述（由申请人提供）：建议使用基于激光的声发射（AE）检测设备（第一和第二阶段）进行工地结构稳定性评估，以减少因屋顶福尔斯坠落、侧壁褶皱、停车位坍塌、斜坡滑动等造成的职业伤害和死亡。在采矿业。这项应用研究和开发涉及矿工的安全，有助于确保矿工享有“安全和健康的工作条件”的权利（1970年《职业安全和健康法》）。这种新设备将利用激光超声波、人工智能（AI）和传统声发射技术的创新，为矿山工人提供独特的即时、真实的时间稳定性评估，评估工作环境中的直接岩石结构，这在过去是无法实现的。这项研究还将导致一个独特的非接触式监测装置的声发射/微震研究，这将是非常有用的，在许多领域的应用。第一阶段研究的主要目标是在实验室条件下演示用于稳定性评估的激光设备的概念，并构建原型设置，以便在随后的第二阶段研究中进一步开发和优化。这一主要目标包括五个具体目标：1.标本制备，2.激光声发射监测仪的研制;不良事件数据收集和失效标准制定，4。实验室演示，5。最终报告和第二阶段提案。

DESCRIPTION (provided by applicant): A laser-based acoustic emission (AE) detection device is proposed (Phase I & II) for work site structural stability assessment in order to reduce the occupational injuries and fatalities caused by roof falls, sidewall crumples, stop collapses, slope slides, etc., in the mining industry. This applied research and development addresses the miner's safety and contributes to ensuring the mineworker's right to "safe and healthful working conditions" (Occupational Safety and Health Act of 1970). This new device will take advantage of innovations in laser ultrasonic, artificial intelligence (AI) and conventional acoustic emission technology to provide mine workers with a unique instant, real time stability assessment of immediate rock structures in the working environment, which was not attainable in the past. This research will also result in a unique non-contact monitoring device for acoustic emission/microseismic studies, which will be very useful in many areas of application. The primary objective of the Phase I research is to demonstrate under laboratory conditions the concept of the laser device for stability assessment, and to construct a prototype setup for further development and optimization in the subsequent Phase II research. This primary objective consists of five specific aims: 1. Specimen preparation, 2. Development of laser-based AE monitor, 3. AE data collection and failure criteria development, 4. laboratory demonstration, and 5. final report and Phase II proposal.