Iiparameter zobugcisa zesiseko soomatshini segranite.

 

I-Granite, ilitye elisetyenziswa kakhulu kwi-igneous rock, iyaziwa ngokuqina kwayo, nto leyo eyenza ukuba ibe yinto efanelekileyo kwiziseko zoomatshini kwiiprojekthi ezahlukeneyo zokwakha. Ukuqonda iiparameter zobugcisa zeziseko zoomatshini ze-granite kubalulekile kwiinjineli kunye nabayili bezakhiwo ukuqinisekisa ukuthembeka kwesakhiwo kunye nobude bexesha.

Enye yeendlela eziphambili zobugcisa zegranite ngamandla ayo okuxinanisa, adla ngokuba phakathi kwe-100 ukuya kwi-300 MPa. La mandla aphezulu okuxinanisa avumela igranite ukuba imelane nemithwalo enzima, nto leyo eyenza ukuba ifaneleke koomatshini abanzima kunye nezixhobo. Ukongeza, igranite inemibhobho ephantsi, ngokubanzi phakathi kwe-0.1% ukuya kwi-0.5%, nto leyo enegalelo ekuchaseni kwayo ukungena kwamanzi kunye nokutshintsha kwemozulu yamakhemikhali, nto leyo ephucula ngakumbi ukufaneleka kwayo kwiziseko zoomatshini.

Enye iparameter ebalulekileyo yimodulus ye-elasticity, ethi kwi-granite ibe malunga ne-50 ukuya kwi-70 GPa. Le mpawu ibonisa ukuba izinto ziya konakala kangakanani xa ziphantsi koxinzelelo, nto leyo enika ulwazi malunga nokusebenza kwayo phantsi kwemithwalo enamandla. I-coefficient ephantsi yokwandisa ubushushu ye-granite, malunga ne-5 ukuya kwi-7 x 10^-6 /°C, iqinisekisa ukuba igcina ubunzulu bayo besakhiwo nokuba kukho ukuguquguquka kobushushu, nto leyo eyenza ukuba ibe lukhetho oluthembekileyo lweziseko kwiindawo ezahlukeneyo zemozulu.

Uxinano lwegranite, oluqhele ukuba phakathi kwe-2.63 ukuya kwi-2.75 g/cm³, nalo ludlala indima ebalulekileyo kuyilo lwesiseko. Uxinano oluphezulu lunegalelo kuzinzo olupheleleyo lwesiseko, lunciphisa umngcipheko wokuhlala okanye ukutshintsha ngokuhamba kwexesha. Ngaphezu koko, ukumelana kwegranite nokukrazuka kunye nokuguguleka kwenza ukuba ibe lukhetho oluhle kakhulu kwiziseko ezijongene nezithuthi ezininzi okanye uxinzelelo loomatshini.

Ukuqukumbela, iiparameter zobugcisa zeziseko zegranite mechanical, kubandakanya amandla okucinezela, imodulus yokuthamba, i-porosity ephantsi, kunye noxinano oluphezulu, zigxininisa ukusebenza kwayo njengezinto ezisisiseko. Ngokusebenzisa ezi mpawu, iinjineli zinokuyila iziseko ze-mechanical eziqinileyo nezihlala ixesha elide ezihlangabezana neemfuno zokwakha zanamhlanje.