【摘要】 贯通方案是否合理,直接决定贯通精度的高低以及能否安全无误贯通,在平顶山七星煤业有限责任公司四煤组四采区回风井的贯通工程中,通过实施优化方案,较好地完成了本次回风井的贯通测量任务。更多还原

【Abstract】 Whether the breakthrough plan is reasonable or not directly decides the level of survey accuracy and the ability to fail-safe survey.In the process of the breakthrough project of four mining area return air well of four seam coal mining group in Pingdingshan seven-star coal limited liability company,we can finish the return of measuring task well through the implementation of the scheme.更多还原