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捷克斯洛伐克有奥斯特拉发-卡尔维纳(以下简称奥-卡)、哥拉德诺和普列维查3个井工开采的矿务局。薄煤层开采主要集中在奥-卡矿区。本文着重介绍奥-卡矿区的薄煤层开采技术。奥-卡矿区位于上西里西亚煤田南部,是捷克斯洛伐克优质焦煤的主要产地。该煤田属石炭系。地质储量37.18亿t,可采储量9.28亿t。硬煤产量占全国总产量的88％。煤层厚度从0.5～12m或更厚,其中1m以下的薄煤层占整个煤田总储量1/2以
Czechoslovakia has Ostrava - Calvina (hereinafter referred to as Austria - card), Ge La De Nuo and Plejevac three wells mining Bureau. Thin coal seam mining is mainly concentrated in Austria - card mining area. This article focuses on the thin seam mining technology in the Austrian-Cass Mining Area. Located in the southern Upper Silesia coal field, the Oka-Cassum area is the main source for Czechoslovakia’s premium coking coal. The coal field is Carboniferous. Geological reserves of 3718000000 t, recoverable reserves of 928000000 t. Hard coal production accounts for 88% of the country’s total output. Seam thickness from 0.5 ~ 12m or thicker, of which 1m thin coal seam below the total coal reserves of 1/2