有色矿冶
有色礦冶
유색광야
NON-FEROUS MINING AND METALLURGY
2014年
1期
19-21,15
,共4页
膏体充填%物料配比%塌落度%分层度%单轴抗压强度%泌水率
膏體充填%物料配比%塌落度%分層度%單軸抗壓彊度%泌水率
고체충전%물료배비%탑락도%분층도%단축항압강도%비수솔
paste backfill%material mixing ratio%slump test%segregation degree%UCS%bleeding rate
针对某矿膏体充填物料，通过全面实验法研究了膏体充填材料的综合性能，并推荐了最优配比。结果表明，浓度与塌落度、分层度、泌水率呈负相关，与强度正相关；水泥添加量与塌落度、28 d强度正相关，与分层度、泌水率负相关。根据塌落度25～27 cm、分层度0．3～0．6 cm、泌水率5％～15％时，推荐全尾砂与水淬渣重量比例为75∶25，28 d单轴强度＞2 M Pa时灰砂比为1∶8，膏体浓度为76％～78％；当28 d单轴强度＞0．5 M Pa时，灰砂比为1∶16，膏体浓度为76％～78％。
針對某礦膏體充填物料，通過全麵實驗法研究瞭膏體充填材料的綜閤性能，併推薦瞭最優配比。結果錶明，濃度與塌落度、分層度、泌水率呈負相關，與彊度正相關；水泥添加量與塌落度、28 d彊度正相關，與分層度、泌水率負相關。根據塌落度25～27 cm、分層度0．3～0．6 cm、泌水率5％～15％時，推薦全尾砂與水淬渣重量比例為75∶25，28 d單軸彊度＞2 M Pa時灰砂比為1∶8，膏體濃度為76％～78％；噹28 d單軸彊度＞0．5 M Pa時，灰砂比為1∶16，膏體濃度為76％～78％。
침대모광고체충전물료，통과전면실험법연구료고체충전재료적종합성능，병추천료최우배비。결과표명，농도여탑락도、분층도、비수솔정부상관，여강도정상관；수니첨가량여탑락도、28 d강도정상관，여분층도、비수솔부상관。근거탑락도25～27 cm、분층도0．3～0．6 cm、비수솔5％～15％시，추천전미사여수쉬사중량비례위75∶25，28 d단축강도＞2 M Pa시회사비위1∶8，고체농도위76％～78％；당28 d단축강도＞0．5 M Pa시，회사비위1∶16，고체농도위76％～78％。
The composite properties were tested by the comprehensive method based on the paste backfill material in a mine , the best ratio of each material was recommended . The results shown that the paste concentration had a negative relationship with slump , segregation degree and bleeding rate , and positive related with the UCS . The cements consumption was positive related with slump and UCS at 28 d , and negative related with segregation , bleeding rate . The recommend ratio was cement tailings ratio 1∶8 and the concentration 76% ~78% for UCS at 28 d larger than 2 M Pa , the other is cement tailings ratio 1∶16 and the concentration 76% ~78% for UCS at 28 d larger than 0 .5 MPa , when the slump 25~27 cm , the segregation degree 0 .3~0 .6 cm , the bleeding rate 5% ~15% , the tailings-slag ratio 75∶25 .
