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介绍了浙江建铜集团公司在缓倾斜厚矿体分段空场采矿法中，对某些特定条件下的矿体，改用上向倾斜扇形中深孔落矿，能更有效地控制矿石损失和贫化，且爆破后冲破坏小、爆堆集中，改善了爆破作业条件。
Introduced the Zhejiang Jiankang Group Company in the gently inclined thick ore body sub-section mining method, the ore body under certain conditions, instead of the upward inclined fan-shaped hole in the deep hole, can more effectively control the ore loss And depleted, and after the blasting small destruction, blasting heap concentration, improved blasting conditions.