ПРОГНОЗИРОВАНИЕ УСТОЙЧИВОСТИ ЗАБОЯ ПРИ ЩИТОВОЙ ПРОХОДКЕ ТОННЕЛЯ С ИСПОЛЬЗОВАНИЕМ МОДЕЛИ НОРМАЛЬНОГО РАСПРЕДЕЛЕНИЯ Instability prediction model of shield tunnel face based on normal cloud-PSM

Junwei Zhang, Congzhou Gao, Xinmiao Huang

Аннотация


Приводятся результаты исследования влияния различных факторов, количественные характеристики которых имеют вероятностную природу, на устойчивость забоя при сооружении тоннелей с применением механизированных щитовых комплексов. Исследовано влияние десяти наиболее значимых факторов, связанных с геологией, окружающей средой и технологией проходки, что позволило рассматривать полученные результаты при разных комбинациях факторов в качестве комплексной оценки риска потери устойчивости забоя. Исследования выполнялись на трехмерных числовых моделях в предположении нормального распределения случайных действующих факторов. Предложено риски потери устойчивости забоя сгруппировать в пять классов, от высокого до низкого. Дается их описание и указываются защитные мероприятия для предотвращения риска или минимизации возможного ущерба. Тестирование предлагаемого метода оценки риска потери устойчивости забоя
для прогнозирования состояния тоннеля показало хорошую сходимость результатов моделирования с фактическими наблюдениями.

Полный текст статьи публикуется в английской версии журнала
«Soil Mechanics and Foundation Engineering”, vol.60, No.5


Литература


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