1. Malo ofufuzira
Kupanga mchenga ndi miyala kuyenera kukhala pafupi, malinga ndi zoletsa za zinthu ndi mayendedwe. Kuwonjezera pa chitetezo cha kuphulika kwa migodi, kuphatikiza mtengo woyendera zinthu zopangira ndi zinthu zomalizidwa, mzere wopanga udzamangidwa pafupi. Zolinga zofufuzira makamaka ndi malo omwe mchenga uli komanso zomwe zilipo, ndipo pali dongosolo la malo omwe mzere wopanga udzakhale.

2, kupanga njira yopangira mchenga
Njira yopangira mchenga yapangidwa kuti ikhale yophwanya magawo atatu, kutanthauza kuphwanya koyamba, kuphwanya kwapakati, ndi kuphwanya pang'ono.
Mchere wa granite umasamutsidwa kupita ku malo otulutsira zinthu a malo ophwanyira, ndipo granite yokhala ndi tinthu tating'onoting'ono tosakwana 800 mm imanyamulidwa ndi chodyetsa chogwedezeka ndi chipangizo chowunikira; granite yosakwana 150 mm imagwera mwachindunji pa chonyamulira lamba ndikulowa m'bwalo losungiramo zinthu; chinthu chachikulu kuposa 150 mm Pambuyo pophwanya koyamba kwa chophwanya nsagwada, zinthu zosweka zimatumizidwanso ku bwalo loyambirira. Pambuyo powunikira kale kudzera pa sikirini yogwedezeka, chinthu chosakwana 31.5 mm chimasefedwa mwachindunji, ndipo chinthu chokhala ndi tinthu tating'onoting'ono toposa 31.5 mm chimalowa pakati pa chophwanya nsagwada. Pambuyo pophwanya ndi kuwunikira, zinthu zomwe zili pamwamba pa 31.5 mm zimalowa bwino kwambiri mu chophwanya. Pambuyo pophwanya, zimalowa mu sikirini yozungulira yozungulira ya zigawo zitatu ndipo zimayikidwa m'magulu atatu a miyala ya granite ya 0 mpaka 5 mm, 5 mpaka 13 mm ndi 13 mpaka 31.5 mm.
Zipangizo zomwe zinagwiritsidwa ntchito poponda koyamba ndi choponda nsagwada, ndipo zipangizo zomwe zinagwiritsidwa ntchito poponda ndi choponda nsagwada ndi choponda nsagwada, ndipo zoponda zitatu ndi malo oyeretsera pamodzi zimapanga njira yopangira chizunguliro chotsekedwa.

3, kusungiramo zinthu zomalizidwa
Ma granite grit atatu okhala ndi tinthu tating'onoting'ono tosiyanasiyana akadutsa mu kuphwanya ndi kuwunikira amatumizidwa m'mabanki atatu ozungulira a 2500 t kudzera m'malamba motsatana.