Determination of Cyclic Filling Length in Gob-Side Entry Retained with Roadside Filling and Its Application
نویسندگان
چکیده
Gob-side entry retained with roadside filling (GER-RF) plays a key role in achieving coal mining without pillar and improving the resource recovery rate. Since there are few reports on cyclic length of GER-RF, method based stress difference is proposed to determine GER-RF. Firstly, stability analysis mechanics model immediate roof above area was established, then, relationship between distribution unsupported obtained by method. According its tensile strength, maximum rational were determined. Combined geological conditions 1103 thin seam working face Heilong Coal Mine 1301 thick Licun Mine, suggested applied that lengths 2.4 m 3.2 m, respectively. Field trial tests show can effectively control surrounding rock deformation along road-in support improve construction speed.
منابع مشابه
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ژورنال
عنوان ژورنال: Shock and Vibration
سال: 2021
ISSN: ['1875-9203', '1070-9622']
DOI: https://doi.org/10.1155/2021/4055358