Formation mechanism and height calculation of the caved zone and water-conducting fracture zone in solid backfill mining
Lei Li1
Fengming Li2
Yong Zhang3
Daming Yang4
Xue Liu5
1.School of Energy and Mining Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;China Coal Research Institute, Beijing 100013, China2.China Coal Technology & Engineering Group(CCTEG)Central Research Institute, Beijing 100013, China3.School of Energy and Mining Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China4.College of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056000, China5.China Coal Research Institute, Beijing 100013, China
摘要：To study the heights of the caved zone and water-conducting fracture zone in backfill mining,the failure mechanism of strata during backfill mining was analyzed,and a method for determining the heights of the two zones was proposed based on key strata theory.The movement and failure regularity of the strata above the backfilling panel were revealed through numerical simulation.Considering the geologic conditions of the CT101 backfilling panel,the height of the fracture zone was determined using the proposed method along with empirical calculation,numerical simulation,and borehole detection.The results of the new calculation method were similar to in situ measurements.The traditional empirical formula,which is based on the equivalent mining height model,resulted in large errors during calculation.The findings indicate the reliability of the new method and demonstrate its significance for creating reference data for related studies.
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论文发表日期：2020-03-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：8( 208-215 )
英文信息