PMID- 36342607
OWN - NLM
STAT- MEDLINE
DCOM- 20230224
LR  - 20230224
IS  - 1614-7499 (Electronic)
IS  - 0944-1344 (Linking)
VI  - 30
IP  - 9
DP  - 2023 Feb
TI  - Precise application of grouting technology in underground coal mining: water 
      inrush risk of floor elimination.
PG  - 24361-24376
LID - 10.1007/s11356-022-23816-w [doi]
AB  - Many coal mines in China suffer from the Ordovician limestone (OL) and 
      Carboniferous limestone (CL) containing water inrush frequently due to the 
      complex geology condition; water inrush has become a serious disaster in coal 
      mining. To prevent water-bursting disaster from the floor of mine and cutting 
      down deaths and economic loss, a grouting method for limestone fracture aquifer 
      has been widely adopted. In this paper, a time-dependent empirical grouting model 
      considering (1) time-dependent behavior of the injected slurry, (2) response of 
      the rock, and (3) interaction between the slurry and rock was proposed to 
      describe the slurry diffusion mechanism in rock fracture. Aiming at the problem 
      of water disaster prevention of a coal seam floor in 16,104 working face of Luxi 
      coal mine, that was, the grouting failed to seal the water flow channel of 
      aquifer, the causes of the failure of grouting for water sealing were analyzed. 
      According to the aquifer parameters and model calculation results, a grouting 
      scheme with a slurry diffusion radius of 20 m and grouting pressure of 8 MPa was 
      proposed; 2 rounds of grouting were implemented, following the split spacing 
      principle, to ensure that finer fractures can be sufficiently sealed. Finally, 
      with the comparative analysis through the network parallel electrical method 
      (NPEM) and the drilling exploration method for water-rich areas before and after 
      grouting, it was verified that the grouting effect for floor limestone aquifer 
      was good, and the grouting scheme proposed and the grouting pressure designed 
      were reasonable. Results may provide reference to a karst fractured aquifer 
      grouting project, as well as reduced the losing because of blindness and 
      experience.
CI  - (c) 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, 
      part of Springer Nature.
FAU - Zhai, Minglei
AU  - Zhai M
AD  - State Key Laboratory of Geomechanics and Deep Underground Engineering, China 
      University of Mining and Technology, Xuzhou, 221116, Jiangsu, China. 
      minglzcumt@126.com.
FAU - Bai, Haibo
AU  - Bai H
AD  - State Key Laboratory of Geomechanics and Deep Underground Engineering, China 
      University of Mining and Technology, Xuzhou, 221116, Jiangsu, China.
LA  - eng
GR  - 50974115/National Natural Science Foundation of China/
PT  - Journal Article
DEP - 20221107
PL  - Germany
TA  - Environ Sci Pollut Res Int
JT  - Environmental science and pollution research international
JID - 9441769
RN  - 059QF0KO0R (Water)
RN  - H0G9379FGK (Calcium Carbonate)
RN  - 0 (Coal)
SB  - IM
MH  - *Coal Mining/methods
MH  - Water
MH  - *Groundwater
MH  - Calcium Carbonate
MH  - Coal
OTO - NOTNLM
OT  - Bingham slurry
OT  - Fractured aquifer
OT  - Grouting effect
OT  - Slurry diffusion model
OT  - Slurry-rock coupling effect
OT  - Time-dependent behavior of viscosity
EDAT- 2022/11/08 06:00
MHDA- 2023/02/25 06:00
CRDT- 2022/11/07 11:17
PHST- 2022/03/03 00:00 [received]
PHST- 2022/10/21 00:00 [accepted]
PHST- 2022/11/08 06:00 [pubmed]
PHST- 2023/02/25 06:00 [medline]
PHST- 2022/11/07 11:17 [entrez]
AID - 10.1007/s11356-022-23816-w [pii]
AID - 10.1007/s11356-022-23816-w [doi]
PST - ppublish
SO  - Environ Sci Pollut Res Int. 2023 Feb;30(9):24361-24376. doi: 
      10.1007/s11356-022-23816-w. Epub 2022 Nov 7.