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首页> 外文会议>International Structural Engineering and Construction Conference(ISEC-03); 20050920-23; Shunan(JP) >Rockfall safety during construction excavations
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Rockfall safety during construction excavations

机译：施工开挖中的落石安全

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摘要

All construction excavations in rock pose a falling rock hazard, even when the excavation itself is structurally stable. This paper focuses on the study of falling rock hazards for stable excavations, since unstable excavations lack slope integrity and require serious mitigation measures anyway. For excavations that are stable, a falling rock hazard index (FRHI) has been developed to determine the degree of danger to workers in the vicinity of the rock excavation. The FRHI described herein considers rock face parameters such as face height, face inclination, face irregularities, rock condition, spacing of discontinuity, block size of falling rocks, volume of falling rocks, excavation method, time factor, and rockfall frequency. Various netting systems, partially illustrated in the paper, are recommended to offer mitigation for falling rock hazards. The netting systems have been carefully evaluated for their simplicity and economy. Twenty-seven FRHI evaluations made on various rock slopes proved the practicality and efficiency of the FRHI system. Usage of the FRHI is a rational and economic basis for proper protection measures, and serves greatly to reduce the intensity and frequency of accidents and injuries on construction sites.
机译：即使在开挖本身结构稳定的情况下，所有在岩石中进行的施工开挖都具有跌落的危险。由于不稳定的开挖缺乏边坡的完整性，并且无论如何都需要采取严格的缓解措施，因此本文重点研究了稳定开挖的落石危害。对于稳定的开挖，已经制定了落岩危险指数（FRHI），以确定对岩石开挖附近工人的危险程度。本文所述的FRHI考虑岩石面参数，例如面高，面倾角，面不规则性，岩石状况，不连续性的间隔，下落的岩石的块大小，下落的岩石的体积，开挖方法，时间因子和落石频率。建议使用各种网状系统（本文中有部分说明）来减轻落石危险。网系统已经过仔细评估，以确保其简单性和经济性。在各种岩石边坡上进行的27次FRHI评估证明了FRHI系统的实用性和效率。 FRHI的使用是采取适当保护措施的合理和经济基础，并且在很大程度上减少了建筑工地事故和伤害的发生频率和频率。

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