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指出中深孔掘进是提高平巷掘进技术水平的有效途径；根据中深孔掘进爆破工艺的特点，对凿岩机械的技术进步提出了新的要求，详细地探讨了满足新要求的掘进型中深孔液压凿岩机的设计理论和方法；提出电动机满负荷钻凿爆破孔，短时过负荷４０％钻凿掏槽大孔的设计思想。
It is pointed out that medium-deep hole excavation is an effective way to improve the technical level of roadway driving. According to the characteristics of middle-deep hole boring and blasting process, new requirements for the technical progress of rock drilling machinery are put forward. Hole hydraulic rock drill design theory and method; put forward the motor full load drilling blasting hole, short-term overload 40% of drilling big hole design.