Department;
of;
Marine;
Technology,;
Huaihai;
Institute;
of;
Technology,;
Lianyungang,;
Jiangsu;
222001,;
China;
College;
of;
Resources;
&;
Safety;
Engineering,;
China;
University;
of;
Mining;
&;
Technology,;
Beijing;
100083,;
China;
Beijing;
Institute;
of;
Geological;
Survey,;
Beijing;
100083,;
China;