I-patterned filling method for initial stage of coal mining based on roof fracture feature characteritics

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United States of America Patent

PATENT NO 12098637
APP PUB NO 20240209734A1
SERIAL NO

18595263

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Abstract

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An I-patterned filling method for an initial stage of coal mining based on roof fracture characteristics is provided. A relationship between an overburden load borne by a main roof and an overhang size is determined based on principle of virtual work and a surgery theory when an overhang distance of the main roof reaches an initial weighting interval to enter a plastic limit state with an advance of a working face to obtain the initial weighting interval. An initial fracturing interval of an immediate roof is obtained in the same way. According to a subsidence law of the main roof in an inverted hip roof form, the filling is performed at a key position around an internal plastic hinge line through I-patterned three-strip filling. Size parameters of the I-pattered filling are designed to prevent the immediate roof and the main roof from being fractured.

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Patent Owner(s)

Patent OwnerAddress
TAIYUAN UNIVERSITY OF TECHNOLOGYNO 209 DAXUE STREET YUCI DISTRICT SHANXI PROVINCE JINZHONG CITY 030600

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cui, Jiaqing Taiyuan, CN 3 1
Cui, Yekai Taiyuan, CN 1 0
Feng, Guorui Taiyuan, CN 13 3
Guo, Wei Taiyuan, CN 345 2714
Li, Zhu Taiyuan, CN 84 657
Ma, Jingkai Taiyuan, CN 1 0
Qi, Tingye Taiyuan, CN 4 0

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