煤矿安全2017，Vol.48Issue(z1)：5-9,5.DOI:10.13347/j.cnki.mkaq.2017.S1.002
神东矿区大采高综采工作面关键层运移规律研究
Study on Critical Layer Movement Laws of Large Mining Height Fully Mechanized Working Face in Shendong Mining Area
刘英杰1
作者信息
- 1. 神华神东煤炭集团有限责任公司生产管理部,陕西神木719315
- 折叠
摘要
Abstract
Due to the particularity,fully mechanized coal face with large mining height or extra large mining height,the roof structure movement form is different compared with secondary mining height working face.After the mining influence,through the study of movement laws of overlying critical layer,the results show that overlying critical layer is usually in the form of "cantilever beam"breakage structure under the condition of large mining height or extra large mining height,also forms stable hinged structure sometimes;the upper critical layer usually can form "masonry beam" structure;when the upper key strata occurs fracture,the lower key layer will also be affected by the fracture of upper key layer;strata behavior and periodic weighting interval of working face does not directly affected by the breakage of upper key strata but by whether the key layer is breakage or not.关键词
大采高/砌体梁/悬臂梁/关键层/物理模拟/数值模拟Key words
larger mining height/voussoir beam/cantilever beam/critical layer/physical modeling/numerical modeling分类
矿业与冶金引用本文复制引用
刘英杰..神东矿区大采高综采工作面关键层运移规律研究[J].煤矿安全,2017,48(z1):5-9,5.
