铁法矿区瓦斯控制技术

Methane Control Technologies in Tiefa Mining Area

铁法煤田属于低透气性煤田,很难进行本煤层抽放,只能进行采动影响下的卸压煤层瓦斯抽放。为指导瓦斯控制技术方法的确定,铁法公司研究了采动岩体移动变形及其裂隙分布的规律,同时还研究了瓦斯控制与围岩移动和矿井通风的关系。在此基础上,铁法矿区的瓦斯控制技术有了长足进步,现已总结摸索出15种瓦斯抽放控制方法。本文对其中的主要控制技术方法做了介绍。

Due to the low permeability of Tiefa coal field, methane drainage engineering can hardly be carried out in the virgin coal seam, and it can only be conducted to extract desorbed or released methane under the effects of coal mining activity. In order to guide the determination of methane controlling technology, Tiefa Coal Industry Group Ltd. studied the laws of rock mass' s movements and transformations and its fracture distribution in the course of mining; the relationship of methane controlling with surrounding strata movement and ventilation was also studied. On the basis of the above studies, the methane controlling technology in Tiefa mining area has made great progress. 15 methods of methane drainage and controlling have been explored and summarized so far, among which several major methods are introduced in this paper.