Cov yam ntxwv geometric cov ntaub ntawv ntawm cov tub lim tsuas yog muaj cov cheeb tsam tshwj xeeb, qhov chaw porosity, qhov muab cov khoom ntim, thiab lwm yam, uas yog qhov yooj yim rau kev ntsuas cov kev ua tiav.
(1) Thaj chaw tshwj xeeb Thaj chaw thaj tsam ntawm qhov muab tub lim ib qhov ntim ntawm qhov muab tub lim hu ua qhov chaw tshwj xeeb cheeb tsam, sawv cev los ntawm a, thiab nws chav tsev yog m2 / m3. Qhov loj dua qhov tshwj xeeb cheeb tsam thaj chaw ntawm kev ntim khoom, qhov loj dua qhov roj-kua hloov chaw loj tau muab. Yog li no, tshwj xeeb thaj tsam thaj chaw yog qhov ntsuas tseem ceeb los ntsuas qhov ua tiav ntawm tus muab tub lim.
(2) Porosity Qhov khoob khoob ntawm qhov ntim ntawm qhov ntim ntawm qhov muab tub lim yog hu ua porosity, qhia hauv e, thiab nws qhov ntsuas yog m3 / m3, lossis qhia hauv%. Ntau qhov porosity ntawm qhov muab tub lim, qhov ntau dua cov roj kis tau thiab qhov qis ntawm txoj haujlwm siab. Yog li ntawd, porosity yog lwm qhov taw qhia tseem ceeb rau kev ntsuam xyuas kev ua haujlwm ntawm cov tub lim.
(3) Filler factor Qhov feem ntawm qhov tshwj xeeb saum npoo ntawm qhov muab tub lim mus rau qhov cub qhov cub, uas yog a / e 3, yog hu ua tus muab tub lim, qhia ua f, thiab nws chav tsev yog 1 / m. Nws sawv cev rau kev ua haujlwm hydrodynamic ntawm tus muab tub lim, lub zog me dua tus nqi, qhov tsawg dua qhov dej ntws tsis kam.