摘要
在天然河砂日益短缺的地区,寻求河砂代用品势在必行,石屑代替河砂用于锚喷混凝土工程,技术可行,经济效益显著。
In the river - sand - shortage region, river - sand is natural to be replaced by scrap stone, which is technically practical and economically remarkable.
出处
《河北煤炭》
2000年第4期26-26,36,共2页
Hebei Coal
关键词
石屑
砂
锚喷混凝土
锚喷支护
scrap stone
replacement of sand
research