About the article
O.V. PUKHOVA
The questions about the possibility of using vertical forced cluster drainage for additional drainage of a heavily watered production site on the peat area of the ephthrophic type are considered. The least negative impact of drainage on the natural environment, in particular on the regime of adjacent water bodies, during the development of the peat deposit "Ilyinskoye" is revealed. The influence of additional forced drainage (depending on precipitation and volume of pumped water) on indicators of groundwater level changes in wells and canals was studied. The interaction of vertical wells with peat deposit in the process of additional forced drainage at the control site during the season was analysed. It is established that for vertical filtration the peculiarities of the head ephyre depend on the changes of the filtration coefficient in the layers of the deposit. It was revealed that continuous pumping of water from vertical wells led to the formation of a depression funnel with local additional depressions near the wells. The efficiency of using vertical drainage was confirmed when the moisture content of the production layer is lower than normal (up to 73.3 %). It was noted that the deposit thickened unevenly, and the distribution of moisture potentials was non-equilibrium and depended on the distance to the dryers, as well as on the filtration properties of peat and other factors.
peat, peat deposit, drainage, vertical drainage, hydrological regime, groundwater level, pressure, filtration coefficient, well debit, vertical filtration.