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

Claim 18:
19. The monitoring method according to claim 18, wherein a thickness Mp of the separated bed water inrush prevention protective bed is calculated according to a following formula:, M
   P
  
  =
  
   P
   
    T
    s
   
  
 

wherein, P is a water pressure of a water-bearing stratum overlying the separated bed, with a unit of MPa; and Ts is a critical water inrush coefficient, with a unit of MPa/m;
a drilling depth Hm of the monitoring hole is calculated according to a following formula:

Hm=Hs−Mp 

wherein, Hm is the drilling depth of the monitoring hole, with a unit of m; and Mp is the thickness of the separated bed water inrush prevention protective bed, with a unit of m.