Детерміністський метод моделювання впливу смерчів на водойму-охолоджувач Чорнобильської АЕС

Abstract

На основі використання модельних підходів, запропонованих В. І. Скалозубовим, виконано дослідження для оцінки параметрів хвилі цунамі, викликаної впливом смерчу на водну поверхню водойми-охолоджувача ЧАЕС. При певних умовах хвиля може мати висоту більшу за висоту відгороджувальної дамби і спричинити переливання радіоактивних водних мас в річку Прип’ять поверх відгороджувальної дамби ВО ЧАЕС.Based on the fact, that Chernobyl NPP is located in tornado-hazard area and based on the model approaches by V. I. Skalozubov, a research has been carried out to estimate the parameters of a tsunami wave that might be caused by a tornado influence at water surface of a Chernobyl NPP coolant pond. Under certain conditions the wave can have height larger than the border dike and cause overflow of the water masses into Pripyat river. Modeling of the flooding wave in the coolant pond caused by tornadoes was preformed for tornadoes with intensity class F1.0, F2.0 and F3.0. It was shown that a conservative dike flooding under the design water level in the Chernobyl NPP coolant pond does not happen under F1.0 intensity tornado influence. However, in case of F2.0 and F3.0 intensity class and higher the coolant pond dike is overflowed at the earliest stages of tornado wave formation (T < 0.3). Flooding of Chernobyl NPP coolant pond will cause a large quantity of radiation contaminated water substance enter into Pripyat river with further hazardous environmental consequences. The final decommissioning of the Chernobyl NPP coolant pond supposeswater level reduction by 7 m, i.e. approximaely to Pripyatriver level. Under such conditions conservative dike overflowing by a wave created by F3.0 intensity tornado and below does not happen according to the obtained results.