采矿与安全工程学报Issue(6)：857-862,6.
特厚煤层长壁巷式胶结充填开采技术研究与应用
The research and application of longwall-roadway cemented backfilling mining technology in extra-thick coal seam
摘要
Abstract
In this paper, the longwall-roadway cemented backfilling mining technology is proposed to solve the engineering technical problems in extra-thick coal seam, such as low recovery rate and the difficulty in controlling the mining surface subsidence and overlying strata movement and deformation. Systematically, its layout of filling mining system, main equipment and technics are explained based on studying the principle of longwall-roadway cemented backfilling mining technology in extra thick coal seam. Moreover, the composition and bearing characteristics of the backfilling materials are studied to determine the optimal ratio of cemented filling materials which is well applied to field work, namely the optimal proportion of fly ash, lime slag, cement and gangue are 35%, 10%, 2% and 53% respectively. Furthermore, the slurry concentration is 79% and its uniaxial compressive strength can reach 1.8 MPa. The field engineering application shows that the filling ratio can reach 96.1% and the maximum surface subsidence value is 265 mm when mining 21 meter thick coal seam, namely the surface sinking coefficient is only 0.012 6, which shows an excellent application effects.关键词
特厚煤层/上行分层/长壁巷式充填开采/胶结充填/绿色开采Key words
extra-thick coal seams/upward slicing mining/longwall-roadway backfilling mining/cemented backfilling/green mining分类
矿业与冶金引用本文复制引用
邓雪杰,张吉雄,周楠,安泰龙,郭帅..特厚煤层长壁巷式胶结充填开采技术研究与应用[J].采矿与安全工程学报,2014,(6):857-862,6.基金项目
国家“十二五”科技支撑计划项目(2012BAB13B03)；中国矿业大学创新人才科研基金项目(2013RC01)；江苏省产学研前瞻性联合研究项目(BY2012082) （2012BAB13B03）
