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Microseismicity due to gravity-induced rock-mass deformations and a related alarm system

机译：重力引起的岩体变形引起的微震和相关的警报系统

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Gravity-induced deformations due to Rock-Mass Creep (RMC) affect the carbonate PeschierarnSprings slope (Italy) which hosts the most important drainage plant for the Rome’s water supply. This waterrnresource is due to a major regional karst aquifer with an average discharge exceeding 18m~3/s. The interaction ofrnthe RMC with the karst ground water seepage is responsible for underground failures, including cave collapsesrnwhich generally occur very close to the spring area. On September 2008, an accelerometric array was installedrnwithin the tunnels of the drainage plant for integrating a pre-existing stress-strain monitoring system. Thernintegrated monitoring system provided many data on: i) continuous deformations due to the RMC which affectsrnthe slope; ii) microseismicity due to the underground failures occurring within the slope; ii) underground failuresrnand rock-mass deformations induced by earthquakes.The up to nowcollected data,were fundamental for derivingrnan alarm system devoted to the drainage plant management and based on some characteristic parameters of thernseismic records. This alarm system provides three possible levels of alarm, which can be independently reachedrnin the different sectors of the drainage plant: the “ordinary” level; the “alert” level and the “emergency” level.rnSome recently occurred events of underground failures made it possible to experience the reliability of thernadopted alarm system.
机译：岩石蠕变（RMC）引起的重力变形会影响碳酸盐岩PeschierarnSprings斜坡（意大利），该斜坡拥有罗马供水系统中最重要的排水设备。水资源主要来自区域内主要的岩溶含水层，平均流量超过18m〜3 / s。 RMC与岩溶地下水渗流的相互作用是造成地下破坏的原因，包括通常在非常接近春季地区发生的洞穴塌陷。 2008年9月，在排水设备的隧道内安装了一个加速度计阵列，以集成一个预先存在的应力-应变监测系统。集成的监控系统提供了许多有关以下方面的数据：i）由于RMC引起的影响斜坡的连续变形； ii）由于斜坡内发生的地下破坏而引起的微地震； ii）地震引起的地下破坏和岩体变形。迄今为止收集的数据，是基于热震记录的一些特征参数，得出了专门用于排水厂管理的南警报系统的基础。该警报系统提供了三种可能的警报级别，可以在排水设备的不同部门独立地达到警报级别：“普通”级别； “警报”级别和“紧急”级别。rn最近发生的一些地下故障事件使得体验已采用的警报系统的可靠性成为可能。

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  • 会议地点 Wroclaw(PL)
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    S. Martino; A. Prestininzi; S. Rivellino; L. Lenti; A. Paciello;

  • 作者单位

    “Sapienza” Università di Roma, Dipartimento di Scienze della Terra e Centro di Ricerca Previsione,Prevenzione e Controllo dei Rischi Geologici (CERI), Roma, Italy;

    “Sapienza” Università di Roma, Dipartimento di Scienze della Terra e Centro di Ricerca Previsione,Prevenzione e Controllo dei Rischi Geologici (CERI), Roma, Italy;

    “Sapienza” Università di Roma, Dipartimento di Scienze della Terra e Centro di Ricerca Previsione,Prevenzione e Controllo dei Rischi Geologici (CERI), Roma, Italy;

    Institut Fran?ais des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux (IFSTTAR),Paris Cedex 15, France;

    Agenzia Nazionale per le Nuove Tecnologie, l‘Energia e lo Sviluppo Economico Sostenibile (ENEA)S. Maria di Galeria (Roma), Italy;

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