| This text practice, join together this unit with section according to the production of many years 26# mine piece mechanics function machine for reason, kind for stability appearance for rock water mud gum knot filling the method, 14-5# mine the top whet the sand gum knot to level layering to fill the method with 32# mine mud filling the method filling the craft technique the characteristics, advantage with each other repairing the sex and under differently adopt first the field the construction the number, differently return to adopt in proper orderly, the different fill the type to wait the term adopting the plank of a crest rounding the rock , deeply into analysis with studying the filling, adopting a crest the plank filling prop upping rounding the rock with controling the ground pressing the activity and its influence adopt first field stability. |
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