|
The influence of the rate of mining operations on the development of subsidence troughs |
|
|
|
|
The influence of the rate of mining operations on the development of subsidence troughs Author: J. Litwiniszyn
Eq (1) was taken as the model for subsidence trough development, where w = w(x,z) is the vertical component of rock mass displacement. The solution to (1) for the imposed condition (4) has the form (5). The form of the functions w sub o = w sub o (x, t) in Eq (4) depends on rock properties and the velocity of moving working front (Fig). As the analytical form of this functions is not available, some properties were assumed in qualitative terms, depending on how the roof subsided over the mined-out areas. The influence of velocity v and acceleration dv/dt of the working front motion on velocity and acceleration of vertical components of subsidence troughs was investigated.
|
2011