摘要
基于赵固一矿煤层埋藏深、水压高、底板隔水层薄等特点,为了最大限度地回收煤炭资源,实现安全高效生产,采用直流电法现场实测、相似模拟试验、有限差分数值计算、离散元数值计算等多种手段对赵固一矿二1煤层11011工作面进行底板破坏深度预测,经过对底板隔水性分析和突水性评价,建立了一整套适合研究工作面底板防治水的技术体系,分析得出赵固一矿11011工作面底板L8灰突水危险性大,二灰、三灰以及奥灰突水可能性小。
Based on the features of the deep depth seam,high water pressure,thin water isolated layer in floor and others in Zhaogu No.1 Mine,in order to maximally recover the coal resources and to realize a safety and high efficient production,the DC electric method site measurement,the similar simulation experiment,the finite difference numerical calculations,the discrete element numerical method and other means were applied to predict the floor failure depth in No.11011 coal mining face in No.Two1 seam of Zhaogu No.1 Mine.With the analysis on the floor water isolation and evaluation on the water inrush,a completed set technology system suitable to study the floor water prevention and control for the coal mining face was established.The analysis showed that the water inrush danger of No.8 limestone under the floor of the No.11011 coal mining face would be high and the water inrush possibility of the No.2 limestone,No.3 limestone and Ordovician limestone under the floor would be small.
出处
《煤炭科学技术》
CAS
北大核心
2011年第11期18-22,共5页
Coal Science and Technology
基金
国家重点基础研究发展计划(973计划)资助项目(2007CB209402)
关键词
高水压
底板突水评价
数值方法
现场观测
high water pressure
evaluation on water inrush from floor
numerical method
site observation
