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软岩隧道稳定监控量测及支护措施优化调整
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作者 杨远旺 《中文科技期刊数据库(全文版)工程技术》 2021年第11期30-31,34,共3页
近年来,随着我国交通事业的蓬勃发展,铁路隧道建设已取得巨大的突破,现阶段已投入运营的隧道达到17000座。在隧道的建设过程中,穿越不良地质现象已成为常态,其中直边墙软岩隧道因其特殊断面形式以及围岩较差等原因极易发生大变形,随之... 近年来,随着我国交通事业的蓬勃发展,铁路隧道建设已取得巨大的突破,现阶段已投入运营的隧道达到17000座。在隧道的建设过程中,穿越不良地质现象已成为常态,其中直边墙软岩隧道因其特殊断面形式以及围岩较差等原因极易发生大变形,随之而来的拱架扭曲、衬砌开裂及侵限问题的出现给隧道支护结构以及正常施工带来极大的安全隐患,已成为工程界关注的焦点与难点问题。基于此,本文章对软岩隧道稳定监控量测及支护措施优化调整进行探讨,以供参考。 展开更多
关键词 软岩隧道 稳定监控量测 支护措施 优化调整
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Stability Monitoring and Control of Generation Based on the Synchronized Measurements in Nodes of Its Connection
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作者 Alexander Fishov Maria Shiller +1 位作者 Anton Dekhterev Vladimir Fishov 《Journal of Energy and Power Engineering》 2015年第1期59-67,共9页
Synchronized distributed measurements of mode parameters create a technical feasibility for development and implementing new technologies of control the mode stability and the admissibility of EPS (electric power sys... Synchronized distributed measurements of mode parameters create a technical feasibility for development and implementing new technologies of control the mode stability and the admissibility of EPS (electric power system) mode. Discussion will focus on different models obtained from data synchronized measurements for operational and automatic emergency control without EPS being totally controlled. According to the proposed technology, the generator's output power restrictions are determined in real-time by the terms a static stability using the generators' mode model as a multipole with connection nodes of generators' electromotive forces (the matrix of SMA (self and mutual admittances) of electromotive forces of generators). Potential applications of the technology are distribution network with the main substation and generators of commensurable capacity, and transmission network with large power plants (generators) distributed into the network. The one-level control system for all of generators with defining the generator's power limits relative to the main substation is implemented in the first case. In the second case, the two-level control system is brought in, based on the separation of large and small generation motion. The results of the method and technology efficiency verification are shown in the paper, by both computer simulations of the power system modes and its physical model. 展开更多
关键词 Power system static stability synchronized measurements normal mode transient mode post emergency mode matrix of self and mutual admittances.
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