at blasting of ores in the underground conditions and driving of underground open pit minings.;SUBSTANCE: the method for drilling blasting of rocks includes drilling of boreholes with subsequent their loading with explosive charges, short-delay blasting and registration of seismic oscillations on one...
The drilling rate index (DRI) of rocks is important for optimizing drilling operations, as it informs the choice of appropriate methods and equipment, ultimately improving the efficiency of rock excavation projects. This study presents a hybrid machine learning approach to predict the DRI of rocks ...
Geomechanics abstract Comminution of rocksRIP instead of drilling and blasting : Jackson, D Coal Age, V84, N8, Aug 1979, P64–70 Rock fracture under dynamic stresses Hydraulic fracturing in granite under geothermal conditions Soldberg, P; Lockner, D; Byerlee, J D Int J Rock Mech Min Sci,...
The most important characteristics of rocks which give guidance on the excavation by drilling - blasting are: compressive strength and abrasiveness of rocks. The paper deals with the speed of drilling and explosive specific consumption for the two strength characteristics of rocks.VICTOR ARAD...
A neuro-genetic predictive model to approximate overbreak induced by drilling and blasting operation in tunnels. Bulletin of Engineering Geology and the Environment. 2017;33:1-10 35. Hasanipanah M, Armaghani DJ, Amnieh HB, et al. A risk-based technique to analyze Flyr...
A procedure has been developed at the Combine for calculating DAB parameters, tests have been carried out, and a method of ore breaking has been put into production in contact with the concrete stowage and explosion of charges in the constrained material; the nature of the action of blasting ...
a. Field of Invention This invention pertains to a machine for drilling holes in rocks, and more particularly, for drilling relatively wide, yet shallow, holes suited for installation of utility poles, street lighting, guard railing, highway sound barriers, etc. ...
(drill tail, drill rod, connecting sleeve, drill head) are called drilling tools. Drilling tools (drill pipe, drill bit, etc.) with large hole diameter such as down-the-hole drill and tooth wheel drill are called drilling tools. In the field of rock drilling and blasting, these tools ...
A set of parallel boreholes is drilled along the axis of the shaft at the top by the drill rig, charging is carried out from the upper level, and blasting is applied piecewise from bottom to top. The accuracy of drilling holes limits the construction depth of this method. Therefore, new...
doi:10.1080/09208119608964786NoneTaylor & Francis GroupInternational Journal of Surface Mining Reclamation & Environment