Optimization on Gateway Section of Soft Coal Seam and Hard Roof and Supporting Technology

被引：2

作者：

Chen, Lu ^{[1
]}

Zang, Chuanwei ^{[1
]}

Yu, Fenghai ^{[1
]}

Yu, Xiangkun ^{[1
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Resource & Environm Engn, Qingdao 266510, Shandong, Peoples R China

来源：

ADVANCES IN CIVIL ENGINEERING, PTS 1-4 | 2011年 / 90-93卷

关键词：

Hard roof; Soft coal seam; Section optimization; Numerical simulation;

D O I：

10.4028/www.scientific.net/AMM.90-93.622

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Support invalidity of a roadway have a largely influence on production safety of coal mines, especially the soft coal roadway, which deforms heavily. To solve this problem, it began from the gateway section optimization, based on the actual geological condition of Chang-gouyu Mine. The computational model was established up to optimize tunnel shapes using FLAC(3D). The scopes of plastic zone, stress field, displacement field were compared and analysed for different shapes of roadway. The irregular trapezoid section is adopted, then the bolt support parameters were designed and field application was done. By using the irregular trapezoid, the stress distribution around the roadway is improved and the deformation and plastic zone is decreased. Under the geological conditions of the soft coal seam and hard roof strata, the stability of roadway was effectively controlled by using optimized trapeziform cross-section and bolting support.

引用

页码：622 / 625

页数：4