切顶卸压采空区风流演化特性研究
Research on the Evolution Characteristics of Airflow in Goaf with Roof Cutting and Pressure Relief
张鹏1
作者信息
- 1. 山西焦煤西山煤电西曲矿,山西 古交 030200
- 折叠
摘要
为了对切顶卸压下采空区渗透率变化及采空区风流运移特性进行研究,利用数值模拟软件分析了传统开采及切顶卸压情况下的采空区风流压力及流量变化情况,给出了两种情况下的风流交换情况及采空区风流量.综合对比发现,经过切顶卸压后的流入及流出风量较传统模式有了较大幅度的提升,有效减少了漏风影响,从而提升了通风效率,为后续切顶卸压技术的推广应用提供一定的依据.
Abstract
In order to study the changes in permeability and air flow characteristics of goaf under roof cutting and pressure relief,numerical simulation software was used to analyze the changes in air flow pressure and flow rate in goaf under traditional mining and roof cutting and pressure relief conditions.The air flow exchange and air flow rate in goaf were given for two scenarios.Through comprehensive comparison,it was found that the inflow and outflow airflow after top cutting pressure relief has been significantly improved compared to the traditional mode,effectively reducing the impact of air leakage and improving ventilation efficiency.This provides a certain basis for the promotion and application of top cutting pressure relief technology in the future.
关键词
数值模拟/风流运移/切顶卸压/风流压力Key words
numerical simulation/wind flow transport/cutting top pressure relief/airflow pressure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据