摘要
由于矿井煤炭资源储量日趋枯竭,为延长矿井服务年限、确保膏体充填开采对南副井无影响,矿井决定采用膏体充填开采技术,在对南副井无影响前提下,回收33采区工广压煤部分煤炭资源。通过实施岩体内部各岩层影响边界值数值模拟,并参照地表岩移观测与地表钻孔岩移观测成果,垂直剖面法采用综合移动角代替第四系45°与基岩移动角设计井筒保护煤柱,符合煤层基岩与第四系移动规律,利用垂直断面法、数值模拟方法设计并确定南副井保护煤柱。按设计南副井保护煤柱布置的膏体充填开采工作面,概率积分法变形预计表明,采后对南副井无影响。
Due to the reserves of coal resources in the mine are drying up day by day,in order to extend the service life of the mine and ensure that paste body filling mining has no impact on the southern auxiliary shaft,the mine decides to adopt paste body filling mining technology.Under the premise of having no impact on the southern auxiliary shaft,part of the coal resources in the 33 mining area's Gongguang coal pillar are recovered.By implementing numerical simulation of the influence boundary values of various rock layers inside the rock mass,and referring to the surface rock movement observation and surface drilling rock movement observation results,the vertical section method adopts a comprehensive movement angle instead of the Quaternary 45°and bedrock movement angle to design the protective coal pillar for the shaft,which conforms to the movement law of coal seam bedrock and the Quaternary.The vertical section method and numerical simulation method are used to design and determine the protective coal pillar for the southern auxiliary shaft.According to the paste body filling mining face arranged by the protective coal pillar of the designed south auxiliary shaft,the deformation prediction of the probability integration method shows that there is no impact on the south auxiliary shaft after mining.
作者
张勇
王振亭
陈文
Zhang Yong;Wang Zhenting;Chen Wen(Shandong Energy Zaozhuang Mining Industry Group Company,Chaili Coal Mine,Shandong Tengzhou 277519)
出处
《山东煤炭科技》
2024年第7期29-35,共7页
Shandong Coal Science and Technology
关键词
资源储量
膏体充填
移动角
数值模拟
resource reserves
paste body filling
displacement angle
numerical simulation
