Collecting and sorting lots of information abort boring in hefei city and other data , the equal - depth map and the engineering geological zone of the red - bed of hefei city were made 搜集整理了合肥市大量的鉆孔資料結(jié)合前人工作的成果,重新查明了合肥市紅層分布及埋深情況,繪制了合肥市工程地質(zhì)分區(qū)圖。