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Studies | CESPy
| Training
PROSPECTING / PROJECTS / PRELIMINARY STUDIES
- hazard studies: explosive storage depots, pre-loaded tubes workshop,
explosive blending and delivery trucks,
- impact studies,
- exploitation and extraction methods.
WORK SITE AND OPERATIONAL MONITORING
- monitoring of blasting parameters (blast patterns, front morphology,
drilling quality, explosives),
- blasting and safety audits,
- adapting blasting operations as a function of the production objectives,
- adapting blasting operations as a function of the environmental
objectives (sequential blasting, signal reconstitution, etc.),
- anticipating and controlling environmental impacts,
- internal and external controls,
- integration in improvement procedures (training),
- progress plan.
INTERVENTIONS IN THE EVENT OF AN INCIDENT, ACCIDENT OR LITIGATION
RISK STUDIES
- hazard studies: explosive storage depots, pre-loaded tubes workshop
, explosive blending and delivery trucks.
- projection risk studies.
ENVIRONMENTAL STUDIES
Controls of vibrations linked to work site equipment.
These measurements are carried out when vibratory compactors, sheet
pile drivers or vibratory boring machines are used.
Site law definition: this study is carried out during the
quarry impact study (opening or extension), during the preliminary
study when preparing a worksite or when a projection needs to be
made.
Reconstitution of the overall signal: this method consists
in investigating the detonation times of each of the charges, for
a given site, in such a way that the resulting seismogram is as
favourable as possible for a given criterion. This method takes
into account any delay uncertainties as well as differences in the
performance of each charge, depending on their geographic positions.
OPERATIONAL IMPROVEMENT STUDIES
Blasting instability recovery: this service is based on a
detailed inventory of the rock mass being worked, the blasting and
the environmental and production requirements.
Progress plan: a production model is defined on a statistical
basis, using a series of measurable, quantifiable and analysable
parameters of the production chain and its results.
Optimisation of blasting patterns.
Adaptation of the explosives to the type of rock being worked.
Test firings for heavy and highway construction worksites and
quarries.
Exterior controls (support to the main contactor) and
external controls (support to contractors):
- design and set up of blasting patterns,
- test beds and vibration monitoring,
- design and set up of priming plans,
- drawing up of quality improvement processes or procedures,
- support for technical aspects with external partners.
Particle size measurements of rock piles
Measurement of drilling deviations: these measurements may
be combined with topographic surveys of the rock faces. These measurements
allow the drilling in the quarry/worksite to be accurately monitored
or a new drilling machine suited to the rock in question to be selected.
Drilling geometry and blast pattern design: this involves carrying
out a survey of profiles using a laser profiler followed by computer
assisted blast pattern design.
Measurement of the detonation velocity of explosives and the
actual setting off times of the different charges: these measurements
make it possible to accurately monitor how the explosives have performed
within the rock masses being worked as well as the actual setting
off times of the different charges.
Cubic volume calculations: these measurements enable the
precise topography of rock faces (or even the quarry itself) to
be established and to deduce, from this, the expected collapsed
volumes or the bulking.
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