Purpose
Trenches are built for pipelines of oil, water, sewage, and cables. California Drilling and Blasting uses the trench blasting method in a way that concentrates energy distribution through the rock.
Process
Our trench blasting method uses rounds with a width less than 4 m, and the diameter of the blast holes is smaller than the diameter of the rounds. The smaller size of the holes drilled into the rock better distributes the explosive throughout the rock and avoids contour overbreak.
Heavily-populated Areas
When building trenches for road excavation or pipeline installation in densely populated areas, we take utmost care when drawing plans for a project’s drilling pattern and blasting sequence. To minimize ground vibrations, the drill holes are kept as small as possible, typically 30-50 mm in diameter. To eliminate the risk of fly rock, the blasts are covered with heavy mats made of logs, rubber, or tires, which are cut into sections and twined together with steel wires. These mats, around 1 t in weight, absorb energy, and the gases produced by the blast ventilate through the mats without displacing them.
Unpopulated Areas
Our highest priorities when excavating pipelines projects for oil and gas distribution in unpopulated areas are overall project costs and time efficiency. Larger blastholes are used to maximize the rock removal of a detonation sequence.
