黄陵矿区2~#煤层孔隙特征的实验研究

Experimental study on the pore characteristics of 2~# coal seam in Huangling mining area

为了研究黄陵矿区2~#煤层煤岩孔隙特征,采集了黄陵矿区二号煤矿侏罗系延安组2~#煤层样品,通过肉眼挑选出宏观煤岩组分中的镜煤和暗煤,分别进行压汞和低温液氮吸附实验。结果表明,黄陵矿区2~#煤层镜煤主要以小孔和微孔为主,中孔次之;2~#煤层暗煤主要以中孔、小孔为主,微孔次之。孔隙特性有利于煤层气资源的勘探开发。

In order to research the pore characteristics of 2#coal seam in Huangling mining area,the samples of 2#coal seam from Jurassic Yan′an Formation in Huangling No.2 coal mine were collected.The vitrain and durain samples were picked out and the tests of mercury injection and low-temperature liquid nitrogen adsorption were conducted respectively.The results show that the vitrain is mainly composed of small pores and micropores,followed by mesopores,while,the durain is mainly composed of small pores and mesopores,followed by micropores.The pore characteristics are favorable for the exploration and development of CBM resources.