Study of change of hydrophysical properties of bore mud in process of its utilization into man-induced soil

Innovations and Prospects of Development of Mining Machinery and Electrical Engineering

矿业工程;电工学

Gaevaya, E.V.^1 ; Bogaychuk, Y.E.^2 ; Tarasova, S.S.^2 ; Skipin, L.N.^1 ; Zaharova, E.V.^1

FSBEI of Higher Education Tyumen Industrial University, 2, Lunacharskogo St., Tyumen

625001, Russia^1

R and D Institute Neftegazproekt, Melnikayte 70 St., Tyumen, Russia^2

关键词: Chloride ions;    In-process;    Ion exchange reactions;    Phosphogypsum;    Stable structures;    Sulphate ion;    Surrounding environment;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/87/4/042004/pdf
DOI  :  10.1088/1755-1315/87/4/042004

来源: IOP

【 摘 要 】

The article considers the results of studies of the chemical and granulometric content and the factor of bore mud filtration in the process of its utilization. When the phosphogypsum is added, hydrophysical properties of the bore mud improve. At the same time, gradation of soil from the water-proof to weakly permeable takes place. This phenomenon is connected with recovery of filterability at the expense of ion-exchange reaction and a decrease of the silt fraction content in the bore mud. During the adding of phosphogypsum in the bore mud, pH decreased and made up 7.6-7.8 U. The decrease of the concentration of chloride-ions and sulphate-ions took place at the expense of replacement of Na+by cations of Ca2+that contributed to the formation of the water-stable structure with good filterability. The content of total forms of heavy metals in man-induced soil was lower than MAC (APC) for the loams. Man-induced soil has a V class of danger for the surrounding environment.