block system


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block system

[′bläk ‚sis·təm]
(civil engineering)
A railroad system for controlling train movements by using signals between block posts, that is, the structures that contain the instruments indicating the positions of trains, conditions within block sections, and control levers for signals and other functions.
(mining engineering)
A system of pillars in which a series of entries, rooms, and crosscuts are driven to divide the coal into blocks of about equal size which are then extracted on retreat.
References in periodicals archive ?
Apart from this, the eco bio block system was also used in Delhi for Yamuna cleaning many years back and it had shown successful results.
At present, the model for simulating the railway traffic system can be roughly divided into two classes: one for the moving block system and the other for the fixed block system.
According to the existing models, in view of the organization characteristics for the passenger dedicated line, we establish some rules, demarcate the related parameter, and then propose a new cellular automaton model which can efficiently simulate the phenomenon of multispeed running diagram in a moving-like block system. Then we apply this model to simulate the train operation diagram on the passenger dedicated line.
In addition, he proposed to take drastic measures and put the block system in the tunnels, because at the time of limitation of movement there are drivers, who try to pass on trucks, causing traffic jams.
Besides, he said Auto Block System on 433 km length and Automatic Train Protection (ATP) system in 160 locos will also be provided on Lodhran-Shahdara Bagh Section.
Under the old block system of nurse training, half the time a nurse was in training was on the wards under the watchful eye of the sister.
The details of your project will help you decide on a block system. Different block systems are suited to different project requirements.
Wienerberger, the world's biggest bricks manufacturer and owner of Sedgley's Baggeridge Brick, opened the centre at Longbridge following the UK launch of its engineered clay block system, Porotherm.
Modular frame construction and a building block system of configuration options provide highly productive seeding systems tailored to the small grain, pulse, or oilseed grower's unique situation in operating widths from 10.19 to 19.05 m (33.33 to 62.50 ft).
Coir block system. Combining a coir block system with suitable native woody and non-woody vegetation to construct soil lifts is an excellent way to stabilize cut and fill slopes as well as streambanks in highway construction.
RoLanka's BioD-Block[TM] is a coir fiber block system consisting of a densely packed elongated mattress coir fiber block attached to a bristle coir woven fabric.
The Terra Block System features a line of machines that manufacture Compressed Earth Blocks using common soil as the raw material.