anhydrite formation是什么意思

用法例句

Estimated height of water conducted fracture zone is 16m,and height of in-situ tension fracture zone is 5m after the ore bed was mined;the estimation is based on anhydrite ore bed floor limestone hydrogeological and engineering geological conditions.

基于硬石膏矿层底板灰岩水文地质和工程地质条件计算的矿层开采后导水裂隙带的高度为16m,原位张裂隙带高度为5m。