3
Figure 1. Surface movements along a measuring line of about 2.5 km over a period of 65 years. (Vervoort 2021c). a. Position
of the monitoring points and information on mining below these points b. Variation of surface movements (cumulative) as a
function of time
(a) (b)
Figure 2. Variation of vertical surface movements for the five monitoring points in Figure 1, as a function of time over a 6-year
period (EGMS data covers the years 2016–2021). The start of the curves corresponds to year 59 in Figure 1b.
(a) (b) (c)
(d) (d)
Figure 1. Surface movements along a measuring line of about 2.5 km over a period of 65 years. (Vervoort 2021c). a. Position
of the monitoring points and information on mining below these points b. Variation of surface movements (cumulative) as a
function of time
(a) (b)
Figure 2. Variation of vertical surface movements for the five monitoring points in Figure 1, as a function of time over a 6-year
period (EGMS data covers the years 2016–2021). The start of the curves corresponds to year 59 in Figure 1b.
(a) (b) (c)
(d) (d)