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义安煤矿是1972年简易投产的矿井,原设计能力为30万t。后经改扩建,矿井延深到—500m水平,设计能力为60万t。投产以来,采掘接续始终紧张。为缓和采区接续紧张的局面,减少采区准备巷道的掘进量,节省采区工程投资,我们在对—500m西二采区7、9煤采区进行方案设计时,针对该区山西组7、9煤层间距离较近的特点,改变传统的单一煤层采区设计,采用近距离煤层联合布置设计法,取得了较好的经济效益和社会效益。 1 采区概况
Yi’an Coal Mine is a simple production of mines in 1972, the original design capacity of 300,000 t. After the renovation and expansion, mine depth to -500m level, design capacity of 600000 t. Since put into production, mining continues to be tight. In order to alleviate the tension in the mining area and to reduce the amount of tunneling for the preparation of the roadway in the mining area and to save investment in the mining area, when designing the 7,9 coal mining area in the -500 m West Second Mining Area, , 9 near the distance between the characteristics of the coal seam to change the traditional design of a single coal mining area, the use of joint design of coal seam layout, and achieved good economic and social benefits. 1 mining area profile