| This dissertation discusses the coal accumulation in the study area which basedon the geological survey of SongKan-Mugua temple coalfield Tongzi county inGuizhou province,researching of sedimentary environment and sedimentary faciesof the study area by means of the geological material of drilling cores,combined withanalysis of the ancient climate and the ancient sedimentary framework,and the effectof later structure movement on coal seam meanwhile.The mining area located in the intersection part,which is the east of the Bijienorth-west tectonically deformed area of Zunyi arch of the Yangtze platform and thenorth east to tectonic deformation area north of west margin intersection part,it’sbelongs to the slot type fold area.This area develops a series of fold structure withNE-SW strike direction, tensional and compresso-shear faulted structure.The study area C3coal layer are medium phosphorus,low-mediumgrey,medium-high sulphur,and medium-high heating value,Penumbra~semi-brightdry coal,occurrence in the lagoon, tidal flat deposition of environment of Permianstrata of longtan formation.Research shows that,when lagoon and tidal flat becamemarsh,the coal-forming action happened and became the beneficial place for coallayer.The Permian period Longtan formation was warm and wet climatic.In that time,plants considerable development,and provided favorable material base for the formation of coal.Mugua temple coal field that main part of the tectonic activity influence,theintegrality of coal layer is controled by structural,the conditions of coal’s occurrenceis good.Mugua temple coal mine is a small exploration area,the amount of coalresources has been estimated as28.32million tons. After a rough analysis of minetechnical economic,the external conditions have some basis,the mining conditionsbasically feasible.The author considers the coal mine has good economicdevelopment value, and its service life up to70.8years. |
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