辛置煤矿2-208工作面末采矿压与回撤通道围岩控制技术研究

Research on Surrounding Rock Control Technology of Mining Pressure and Retracement Channel in the 2-208 Working Face of Xinzhi Coal Mine

为保证2-208工作面回撤时的安全,通过分析工作面停采让压技术,给出工作面末采阶段的矿压控制措施,结合工作面地质条件对主回撤通道的围岩控制方案进行具体设计,并进行矿压观测。结果表明:设计的停采让压方案有效地控制了工作面末采阶段的周期来压,主回撤通道在现有支护方案下能够有效地保证巷道围岩的稳定。

In order to ensure the safety of the 2-208 working face retreat,the paper analyses how to stop mining for yielding pressure in the working face,and gives the control measures of mine pressure at the final mining stage.In addition,according to the geological conditions of the working face,the surrounding rock control scheme of main retracement channel is designed concretely,and the strata pressure observation is carried out.The results show that the designed scheme for stopping mining and yielding pressure can effectively control the periodic weighting at the final mining stage of the working face,and the main withdrawal channel can effectively ensure the stability of the surrounding rock of the roadway based on the existing support scheme.