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介绍了水力冲孔技术在严重突出煤层中的应用及其工艺流程。分析了在水力冲孔过程中增加堵喷装置的必要性,此次防喷装置的改进是在原防喷装置的基础上增加了堵喷装置,介绍了改进后的防喷装置的设计。
The application of hydraulic punching technology in severe coal seam and its technological process are introduced. The necessity of increasing plugging device in hydraulic punching process is analyzed. The improvement of the blowout preventer is to add a plugging device on the basis of the original blowout preventer, and the design of the improved blowout preventer is introduced.