首页>
外国专利>
GRID COMPOSITE FOR LONGWALL SHIELD RECOVERY IN UNDERGROUND COAL AND TRONA MINES
GRID COMPOSITE FOR LONGWALL SHIELD RECOVERY IN UNDERGROUND COAL AND TRONA MINES
展开▼
机译:地下复合煤层和特纳矿的网状复合材料
展开▼
页面导航
摘要
著录项
相似文献
摘要
A grid composite for protecting men and longwall mining equipment (68) during longwall shield recovery includes a regular polymer geogrid structure (40) formed by biaxially drawing a continuous sheet of select polypropylene material which is heat bonded to a polyester fabric (46). The grid composite is secured over caving shields (66) of longwall mining equipment (68) during a longwall mining operation.
展开▼