A Laser-Based Device for Work Site Stability Assessment

描述（由申请人提供）：提出了一种基于激光的声发射（AE）检测装置（第一期和第二期），用于工作场所结构稳定性评估，以减少采矿行业中由顶板倒塌，侧壁坍塌，停止倒塌，斜坡滑动等引起的职业伤害和死亡。这种应用研究和发展解决了矿工的安全问题，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、人工智能（AI）和传统声发射技术的创新，为矿工提供独特的即时、实时的工作环境中岩石结构稳定性评估，这在过去是无法实现的。该研究还将产生一种独特的用于声发射/微地震研究的非接触式监测装置，这将在许多领域的应用中非常有用。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装置的概念，并构建一个原型装置，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：2.标本制备；2 .激光声发射监测仪的研制；3 . AE数据收集和失效准则制定；4 .实验室论证；最后报告及第二阶段建议。

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.