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铁北矿井位于扎赉诺尔煤田的西北部,行政区隶属于内蒙古自治区呼伦贝尔盟满州里市扎赉诺尔区.井田走向长4.5km,倾斜宽3.0km,面积13.5km~2.本区地面平坦,煤系地层均赋存于第四系流沙层之下.流沙层厚10～25m,各煤层露头直接与该层接触.井田内共有6层可采煤层,平均总厚度为26.82m,其中Ⅱ_(2a)、Ⅱ_(3b)为全区可采煤层,平均厚度分别为5.9m和5.7m,其余则为局部可采煤层.各煤层厚度变化规律是由浅至深逐渐变厚,由西向东逐渐分叉变薄.井田内煤层为一单斜构造,倾角一般为5～10°.各煤层按层间距变化可分为上、下两个层组,上层组以开采Ⅱ_(2a)层为主,其深部境界标高在+200～+220m左右,下层组则以开采Ⅱ_(3b)为主,其深部境界标高在+160m左右,各煤层厚度及层间距变化见表1.
Tiebei Mine is located in the northwest of Zhalainuoer Coalfield and belongs to Zhalai Nuer District, Manzhouli City, Hulun Buir League, Inner Mongolia Autonomous Region. The minefield is 4.5km long and 3.0km wide with an area of 13.5km ~ Coal measures strata occur in the Quaternary runoff layer under the sand flow layer thickness of 10 ~ 25m, the outcrop of each coal seam directly contact with the layer.There are 6 layers of coal mining, the average total thickness of 26.82m, of which Ⅱ_ (2a), Ⅱ 3b (3b) are the coal seams in the whole area with the average thickness of 5.9m and 5.7m, respectively, and the rest are the local recoverable seams.The thickness of each coal seam changes gradually from shallow to deep and from west The coal seam in the minefield is a monoclinic with a dip angle of 5 ~ 10 ° generally.The coal seams can be divided into upper and lower two-layer group according to the layer spacing variation.The upper layer group is used to mine Ⅱ_ (2a) layer , The elevation of the deep boundary is about +200 ~ + 220m, while that of the lower layer is mainly Ⅱ_ (3b). The elevation of the deep boundary is about + 160m. Table 1 shows the variation of thickness and interlayer spacing of each seam.