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最近南非矿山介绍的水压支腿凿岩机比常规风动凿岩机效率高、速度快且操作更简便，这种凿岩机的试验在加拿大魁北克进行。根据试验结果和在矿山进行的实验研究，水压凿岩机被重新审定，重审考虑达到的凿岩速度、需要的下部支腿构造、副作用及考虑健康与安全。孩研究表明水压支腿凿岩机的使用在特定条件下可以有助于提高凿岩进尺和改替作业环境。
The recent introduction of the hydraulic leg jacks in the South African mines is more efficient, faster and easier to operate than conventional pneumatic jackhammers, which were tested in Quebec, Canada. Based on the test results and experimental studies carried out in mines, hydraulic rock drills were re-examined to reconsider the rock drilling speed achieved, the lower leg construction required, side effects and health and safety considerations. Child studies have shown that the use of hydraulic leg rock drills under certain conditions can help to improve the drilling footage and replace the working environment.