COAL ENGINEERING ›› 2017, Vol. 49 ›› Issue (10): 119-121.doi: 10.11799/ce201710031
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Abstract: In order to explore the evolution law of the movement and stress of the roadway and the overlying strata of the dense filling working face with the double edge of the goal,the stress of working face and the deformation of surrounding rock of filling mining were measured and analyzed . Research shows that: compared with caving method, advance support stress concentration coefficient and the influence scope was significantly reduced in filling mining, mine pressure appeared weak; filling body stress changes into the initial stress area, the stress increasing zone and stress stable zone, which correspondence with the the small deformation zone, the goaf roof movement violently deformation, and stability deformation zone of roof movement in goaf; the gob-side entry retaining deformation significantly, the deformation of the top floor is more than roadway's sides in the early stage, should strengthen the roof support, nearly the speed shift after the stability of surrounding rock is still greater than 2.4mm/d, the late need to strengthen the maintenance.
CLC Number:
TD323
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URL: http://www.coale.com.cn/EN/10.11799/ce201710031
http://www.coale.com.cn/EN/Y2017/V49/I10/119