Table 6 Classification and characteristics of the structural plane integrity.
Integration degree | Characteristics |
|---|---|
Good | (1) The opening degree of structural plane is less than 1 mm, and the filling is siliceous, iron, or calcium cement. Otherwise, the structure plane is rough and there is no filling (2) The opening degree of structural plane is 1–3 mm, and the filling is siliceous or iron cement (3) The structural plane is rough and the opening degree is greater than 3 mm, and the filling is siliceous cement |
Ordinary | (1) The structural plane is straight and the opening degree is less than 1 mm, and the filling material is cement with calcareous mud or there is no filling material (2) The opening degree of the structural plane is 1–3 mm, and the filling is calcium cement (3) The structural plane is rough and the opening degree is greater than 3 mm, and the filling is iron or calcium cement |
Bad | (1) The structural plane is straight and the opening degree is 1–3 mm, and the filling is argillaceous cement or calcium argillaceous cement (2) The opening degree of structural plane is greater than 3 mm, and the filling is mostly muddy or rock debris |
Very bad | The filling is muddy or mud with rock cuttings, and the thickness is greater than the undulation difference |
