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YYT-30型支腿式液压凿岩机是湘潭风动机械厂研制成功，第一机械工业部1984年5月通过技术鉴定的新型凿岩设备，也是国内首创的轻型液压凿岩机。该机在我队尖峰坡矿区勘探290平坑进行了两轮生产试验，这是该机首次投入井下使用。现将试验情况及我们的认识作简要介绍。
YYT-30 leg hydraulic drill is Xiangtan Pneumatic Machinery Factory successfully developed, the first Ministry of Machinery Industry in May 1984 passed the technical identification of new drilling equipment, but also the first light hydraulic rock drill. The aircraft in my team exploration peak spire mining 290 flat pit for two rounds of production test, which is the first time the aircraft put into use underground. Now the test situation and our understanding as a brief introduction.