Patent ID: 11879336
Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC E  G | IPC E  G

Claim 16:
17. The monitoring method according to claim 16, wherein the range of the separated bed development region is from a bottom interface of a quaternary aeolian sand bed to a top interface of a water-conducting fissure zone, and a development depth Hs of the separated bed is calculated according to a following formula:

Hs=Hc−Hf 

wherein, Hc is a buried depth of a roof of a coal bed, with a unit of m; Hf is a development height of the water-conducting fissure zone, with a unit of m; and a calculation formula of Hf is as follows:

Hf=C×Mc 

wherein, Mc is a cumulative mining thickness of the coal bed, with a unit of m; and C is a ratio of a height of a fractured zone to a mining height.