6 research outputs found

    THE FAULT-BLOCK STRUCTURE OF THE BAIKAL-YENISEI FAULT IN THE REGION OF OPERATING NUCLEAR ENERGY FACILITIES

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    The article reviews specific features of its fault-block structure of the Baikal-Yenisei fault in view of safe operations of nuclear energy facilities in the Krasnoyarsk region, Russia. The fault is located at the junction of the Siberian platform and the West Siberian plate. Velocities of neotectonic movements in the fault zone and adjacent territories are estimated from data on the current positions of fluvial terraces of the Yenisei river valley, peneplanation planes varying in ages and erosional incision depths. It is revealed that maximum gradients of recent movement velocities vary not higher than 10–8 to 10–9. Average velocities of relative displacements amount to 0.1–0.2 mm per year for intra-fault blocks bounded by regional faults and do not exceed 0.02–0.03 mm per year for intra-fault blocks bordered by local faults. There are grounds to conclude that recent geodynamic activity in the zone of the Baikal-Yenisei fault zone is weak and thus does not affect the safety of nuclear energy facilities operating in the region, including FGUP GKhK (Mining and Chemical Combine)

    РАЗЛОМНО-БЛОКОВАЯ СТРУКТУРА БАЙКАЛО-ЕНИСЕЙСКОГО РАЗЛОМА В РАЙОНЕ ЭКСПЛУАТАЦИИ ОБЪЕКТОВ ЯДЕРНОЙ ЭНЕРГЕТИКИ

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    The article reviews specific features of its fault-block structure of the Baikal-Yenisei fault in view of safe operations of nuclear energy facilities in the Krasnoyarsk region, Russia. The fault is located at the junction of the Siberian platform and the West Siberian plate. Velocities of neotectonic movements in the fault zone and adjacent territories are estimated from data on the current positions of fluvial terraces of the Yenisei river valley, peneplanation planes varying in ages and erosional incision depths. It is revealed that maximum gradients of recent movement velocities vary not higher than 10–8 to 10–9. Average velocities of relative displacements amount to 0.1–0.2 mm per year for intra-fault blocks bounded by regional faults and do not exceed 0.02–0.03 mm per year for intra-fault blocks bordered by local faults. There are grounds to conclude that recent geodynamic activity in the zone of the Baikal-Yenisei fault zone is weak and thus does not affect the safety of nuclear energy facilities operating in the region, including FGUP GKhK (Mining and Chemical Combine).Рассмотрены специфические черты разломно-блокового строения Байкало-Енисейского разлома, расположенного в области сочленения Сибирской платформы и Западно-Сибирской плиты с целью анализа безопасной эксплуатации объектов ядерной энергетики Красноярского края. На основе современного положения террас р. Енисея, поверхностей выравнивания разного возраста и глубины эрозионного вреза оценены скорости неотектонических движений в зоне Байкало-Енисейского разлома и на сопредельных территориях. Показано, что максимальные градиенты скоростей современных движений не превышают порядка 10–8–10–9. Скорости относительных перемещений внутриразломных блоков, ограниченных региональными разломами, составляют в среднем 0.1–0.2 мм/год, а локальными – 0.02–0.03 мм/год, что дает основание оценивать современную геодинамическую активность в зоне Байкало-Енисейского разлома как слабую, не влияющую на безопасную эксплуатацию объектов ФГУП «ГХК» (Горно-хими­ческий комбинат).
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