This review details the state of the art in research on top coal drawing mechanisms in
Longwall t op c oal c aving (LTCC) by examining the relevant literature over the last two …

The simulation of crack propagation processes in rock engineering has been not only a
research hot spot among scholars but also a challenge. Based on this background, a new …

Using longwall top coal caving (LTCC) in an extra-thick seam, many problems appear, such
as large broken top coal blocks, frequent arch formation in the drawing process, poor …

The macro‐micro mining response of the surrounding rock and overlying strata towards the
transformation from open‐pit to underground mining is examined in the present study, based …

Wadell roundness is a general particle shape descriptor used in many fields, such as mining
engineering, civil engineering, and geotechnical engineering. Initially, Wadell roundness …

Underground mining under an open-pit slope results in movement and instability of rock
masses. However, most rock mass movement prediction methodologies are empirical and …

Mining of close coal seams envisages reservation of a large number of section coal pillars of
a total width ranging from 30 to 40 m. This results in an enormous waste of coal resources …

Slope instability failure is a large deformation problem. Traditional numerical methods and
limit equilibrium methods are difficult to characterize the whole process of failure, resulting in …

The recovery ratio of top coal blocks is the direct reflection of drawing effect in longwall top
coal caving (LTCC), and predicting the field recovery rapidly and accurately is one of the …

With the increasing coal cutting height of a longwall panel with a large mining height, joints
and fractures have a more obvious influence on coal wall stability, which intensifies rib …