Coupling mechanism of roof and supporting wall in gob-side entry retaining in fully-mechanized mining with gangue backfilling

查看全文 作　　者：Ma Zhanguo Gong Peng Fan Jinquan Geng Minmin Zhang [1]Guowei

机构地区：[1]State Key Laboratory of Geomechanics & Deep Underground Engineering, School of Mechanics & Civil Engineering, China University of Mining & Technology, Xuzhou 221008, China

出　　处：《Mining Science and Technology》索引2011年第21卷第6期,共5页

基　　金：supported by the National Natural Science Foundation of China (Nos. 51074163 and 50834005);the Ministry of Education Support Program for New Century Excellent of China(No. NCET-08-0837);the Fundamental Research Funds for the Central Universities of China 摘　　要：We analyzed the deformation characteristics of overlying stratum in backfilling with fully-mechanized and retaining roadways along the gob area coal mining technology, and established a mechanical model for the roof key stratum of retaining roadways along gob under the conditions of backfilling and fully- mechanized coal mining technology. Using Winkler elastic foundation theory, we analyzed a part of the key stratum under the action of elastic foundation coupling problem, and derived deflection analyt- ical expressions. Combined with specific conditions, we obtained the deflection curves for the roof key stratum of retaining roadways along gob under the conditions of backfilling and fully-mechanized coal mining technology. On this basis, we adopted the Coulomb's earth pressure theory to solve the problem of lateral pressure of the gangue filling area on the supporting wall beside the roadway and to provide the theoretical basis for reasonable selection of the distance between gangue concrete wall and roof and fur- ther discussion on the supporting stability of roadway. 关键词：机械化采煤矸石回填全机械化采空区侧屋顶耦合机制挡土墙墙壁

相关文献

参考文献（13）
引证文献（15）
耦合文献（952）

参考文献(13)

引证文献(15)

耦合文献(952)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Coupling mechanism of roof and supporting wall in gob-side entry retaining in fully-mechanized mining with gangue backfilling

参考文献(13)

引证文献(15)

耦合文献(952)

用户提示