Modern Mining ›› 2024, Vol. 40 ›› Issue (03): 203-207.
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A large area of seawater is distributed at the top of the seabed bedrock deposit，and there is a problem of seawater bursting into the mine during mining. Based on the research background of the northwest coastal zone of Jiaodong，the influencing factors and water inflow of mine water inrush are ana⁃ lyzed，and the control measures are put forward. The results show that natural disasters，mining activities and porous aquifers are the main causes of water inrush. Some measures are put forward，such as setting up security to protect the top mine (rock) pillar，drilling and grouting，strengthening the construction of sup⁃ porting facilities to prevent sea water infiltration on the surface，improving the capacity of underground drainage system and building waterproof gates. During the mining of the seabed gold mine in the northwest coastal zone of Jiaotong，it is safe to set the security roof pillar above -165 m elevation，and it is safe to set the security roof pillar above - 200 m in Beizao Coal Mine. The ultimate mining height of the submarine gold mine is -65~-87.2 m，and that of the Beizao Coal mine is -120~-160 m，which can be used as a refer⁃ ence for the mining of the whole submarine deposit after the mining is completed.
