Angren coal deposit

ANGREN COAL DEPOSIT (RU: Ангренское месторождение угля) is located within the Tashkent province of the Uzbek SSR. The area is approximately 70 square kilometres. It has been discovered in 1933, and is developed since 1940. The explored reserves are 1880 million tonnes. The Jurassic coal-bearing stratum (up to 160 metres) contains the thick coal deposition of the complex structure from 20 (at the outcrops) to 130 metres (at the depth): the lower, more compact part of the deposition, namely, the "Powerful complex" (20-50 metres) has 0.85-0.95 coefficient of the coal-bearing; the upper, more splitted part, namely, the "Upper complex" has 0.5-0.8 coefficient of the coal-bearing. The coal-bearing stratum forms the wide slightly inclined syncline, which dips into the south-western direction. The south-eastern wing has the slightly inclined embedment (5-6 degrees), which is disrupted by the ruptures in certain places; the north-western wing is complicated by the secondary folding and thrusts.

The coals are brown (Group B2). Wr is 35%, Ad is 22%, Qsdaf is < 29.3, Qir is 13.4 megajoules per kilogram. The development of the coal is conducted mainly by the open pit method, and by the underground method in the small volume. Besides this, there works the station of the underground gasification of coal, which is producing approximately 500 million cubic metres of gas per year. The deposit is complex. They use the secondary kaolins, which are embedded within the stripping, and the primary kaolins, which are embedded within the soil of the coal deposition, as the raw material for the production of cement, ceramic products; in the future, these kaolins are considered as the alumina raw material. Within the depositions, which are overlying the coal-bearing stratum, there are contained the limestones, which are suitable for the production of Portland cement, lime, fluxes, crushed stone and crushed gravel, and there are contained the loams of the loess type, which are the raw material for the production of bricks and sewage pipes.