松软破碎顶板大采高工作面端面漏冒机理及控制技术研究

doi:10.11799/ce201403024

Abstract

Abstract:

Using combination method of long wire rope and on-site industrial field tests to carry out the end leakage risk mechanism and reinforcement technology research of fully-mechanized face with large mining height and the soft and broken roof。The results show that: the reason of face with large mining height and the soft and broken roof occurred the end leakage risk should not due to face pressure abnormal, and there is no causal link between the two；support structure, setting load, the level of workers to operation face front abutment pressure have effect on the end surface leakage risk；using long wire rope or anchor and grouting joint reinforcement, constitutes a new type of space grid-like reinforcing way, this method can be well controlled the end leakage risk occured on the soft and broken roof , the successfully applied in the field ensured the safety of recovery.

Key words: large mining height, soft and broken roof, long wire rope, grouting reinforcement, space grid-like reinforcement

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http://www.coale.com.cn/EN/Y2014/V46/I3/76

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Study on Top Coal Leakage Risk Mechanism and Control Technology in Large-heighMining Face with Soft and Broken Roof

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