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神府煤田浅部矿井的开采深度一般均小于150m(多数为70～100m),布置主要巷道的煤层(如2-2层,5-2层等),媒质较硬,单向抗压强度一般在200kg/cm~2以上(地质报告提供部分矿井的数据为237～539kg/cm~2),顶底板为粉砂岩、沙泥岩互层,泥岩或中、粗粒砂岩,均为中等稳定岩层,且没有大的地质构造、破坏,岩层完整性好,煤层倾角很小(一般小于3°),属近水平煤层,且瓦斯含量低。此条件与国内大同煤田及黄陵矿区相近,也与美国“宾州”和“西弗州”的煤田条件相近。为使神府煤田从矿井建井伊始就获得好的经济效益,并对
The shallow mining depths of the Shenfu coalfield are generally less than 150m (mostly 70-100m). Coal seams (such as 2-2 and 5-2 floors) of the main roadway are arranged with hard medium and unidirectional compressive strength Above 200kg / cm ~ 2 (the data from some geological reports provide 237 ~ 539kg / cm ~ 2), the top and bottom plates are siltstone, sandstone interbed, mudstone or middle and coarse sandstone, Without large geological structure and damage, rock formation integrity is good, coal seam dip is very small (usually less than 3 °), is near horizontal coal seam with low gas content. This condition is similar to Datong Coalfield and Huangling Mining Area in China, and similar to the coalfield conditions of “Pennsylvania” and “West Virginia” in the United States. In order to Shenfu coal mine from the beginning of the well to get good economic benefits, and right