摘要
对冶西煤矿采空区用注浆法充填采空区及上覆的裂隙冒落带,以求加固地基。灌注材料选用水泥和粉煤灰,水固比为1∶1.5。灌注浆液的结石体充填率达75%以上,由于地基加固的结果,采空区上方的路基承载力满足了高速公路对路基承载力的要求。
Inorder to consolidate the foundation the mined -outarea and the overlyingcollapse-fissure aones in Yexi Coal mine are filled with cement and powder coal -ashas groutingmaterials The ratio ofwater and solidis1:1.5 , the cement is 20%-30% of the totalsolid weigth. The filling ratio oftheconsolidated thingsismore than 75%.Thus the consolidated foundationmeets the demands in bearing capacity of express high-way.
出处
《西安矿业学院学报》
北大核心
1996年第3期220-222,共3页
Journal of Xi'an University of Science & Technology
关键词
煤矿
采空区
地基
注浆加固
express highway mined-out area grouting and consolidation of thefoundation //