煤矿安全2017，Vol.48Issue(3)：202-204,208,4.DOI:10.13347/j.cnki.mkaq.2017.03.054
直接顶厚度对厚硬顶板工作面矿压显现规律的影响
Influence of Immediate Roof Thickness on Strata Behaviors Rule in Thick-hard Roof
摘要
Abstract
In order to study the influence of immediate roof thickness on thick-hard roof mining,taking engineering specifications at 11313 longwa11 working face in Pan'er Coal Mine as research background,based on analyzing physical and mechanical parameters of coal and rock,the UDEC2D model was built to simulate patterns of ground pressure with fully mechanized coal mining in different thickness of immediate roof including 0 m,1.58 m,5 m and 9 m.Results show that immediate roof is the key role in transferring load between thick-hard rock and hydraulic support set at working face.When the thickness of immediate roof is thin of 0 to 1.58 m,the first weighting interval of main roof is less than the condition of 5 m to 9 m.under the condition of thin immediate roof,the dynamic load coefficient of support is larger,and wall caving of working face is serious.However,when the thickness of immediate roof is from 5 m to 9 m,weighting time and interval will be increased and working resistance of support will be needed.关键词
厚硬顶板/直接顶厚度/矿压控制/液压支架/动载系数Key words
thick hard main roof/immediate roof thickness/ground pressure control/hydraulic support/dynamic loading coefficient分类
矿业与冶金引用本文复制引用
邵淑成,杨科,徐伟,金声尧..直接顶厚度对厚硬顶板工作面矿压显现规律的影响[J].煤矿安全,2017,48(3):202-204,208,4.基金项目
国家重点研发计划资助项目(2016YFC0801402) （2016YFC0801402）
国家自然科学基金面上资助项目(51374011) （51374011）
