煤田地质与勘探2011，Vol.39Issue(1)：31-35,5.DOI:10.3969/j.issn.1001-1986.2011.01.008
巨厚松散层下防水煤柱合理留设及其数值模拟
Waterproof coal pillar reasonable design and numerical simulation under extremely thick unconsolidated strata
摘要
Abstract
Waterproof coal pillar reasonable design is a fundamental parameter of coal extraction devising under extremely thick unconsolidated strata.By analysis of Quaternary extremely thick unconsolidated strata geological characteristics, the influence of thickness and structural distribution properties of aquifer and aquifuge under extremely thick unconsolidated strata on water inrush during coal extraction was revealed, the waterproof coal pillar design computing model and theory under extremely thick unconsolidated strata were established, nonlinear computational method under extremely thick unconsolidated strata was put forward, and the waterproof coal pillar design height of number 8 coal seam in Donghuantuo coal mine is 65.62 m.According to fluid-mechanical interaction theory, using FLAC3D numerical simulation calculation software, further simulation on overlying strata deformation and failure law of number 8 coal seam exploitation in Donghuantuo coal mine was carried out.Distribution law of coal seam roof rock caving zone, aquiferous crevice zone and curve subsidence zone was revealed, waterproof coal pillar design height and related engineering technique parameters were acquired, the reliability of nonlinear design method and computational model of waterproof coal pillar design under extremely thick unconsolidated strata is validated, and the feasible approaches to waterproof coal pillar reasonable design under extremely thick unconsolidated strata were explored.关键词
巨厚松散层/防水煤柱/冒落带高度/留设方法/数值模拟Key words
extremely thick unconsolidated strata/ waterproof coal pillar/ caving zone height/ design method/ numerical simulation分类
矿业与冶金引用本文复制引用
王睿,孟召平,谢晓彤,贾立龙,汪元有..巨厚松散层下防水煤柱合理留设及其数值模拟[J].煤田地质与勘探,2011,39(1):31-35,5.基金项目
国家重点基础研究发展计划(973计划)项目(2007CB209405) （973计划）
国家自然科学基金项目(40772100) （40772100）
中国矿业大学大学生科技创新计划项目(2010). （2010）
