Научный центр геомеханики и проблем горного производства, Санкт-Петербургский горный университет, Санкт-Петербург, Россия:

Кутепов Ю. И., зав. лабораторией, проф., д-р техн. наук, koutepovy@mail.ru
Кутепова Н. А., главный научный сотрудник, д-р техн. наук
Поспехов Г. Б., ведущий научный сотрудник, канд. геол.-минерал. наук
Васильева А. Д., научный сотрудник, канд. техн. наук

Показана актуальность проблемы размещения на поверхности земли фосфогипса – побочного продукта производства экстракционной фосфорной кислоты и минеральных удобрений. Рассмотрены условия образования двух модификаций фосфогипса – полугидрата и дигидрата сульфата кальция, отличающихся химико-минеральным составом, физико-химической активностью, склонностью к самоцементации. Приведены результаты изучения закономерностей формирования во времени физико-механических свойств фосфогипсов, полученных при переработке апатитового и фосфоритового сырья. Рассмотрены материалы инженерно-геологических исследований трех крупнейших объектов складирования фосфогипса в Московской и Саратовской областях. Установлена специфика инженерно-геологического строения и гидрогеологической структуры техногенных массивов отвалов фосфогипса, обусловленная закономерными литогенетическими преобразованиями фосфогипса под воздействием физико-химических процессов и гравитационного уплотнения.

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