On the face, part of the air enters the gob in front of the shearer (choosing the path of least resistance) and comes back on the face inby the shearer.
In the bleederless configuration, shown in Figure 3 (bottom), seals were added around the gob and the back bleeder exhaust was closed.
Numerical analysis on the influence of gas extraction on air leakage in the gob, Journal of Natural Gas Science and Engineering 33: 278-286.
ANALYSIS OF INFLUENCE OF TYPES OF ROCKS FORMING THE GOAF WITH CAVING ON THE PHYSICAL PARAMETERS OF AIR STREAM FLOWING THROUGH THESE GOB AND ADJACENT HEADINGS
Third (Stage III), as the working faces advance, every time the block reached the rear of the working face, a single hydraulic prop and an I-steel were used to increase the support the entry roof, and then the block was pushed into the gob
side of the entry by a single long hydraulic prop (Figure 15(c)).
During methane drainage, the methane pressure in an abandoned gob
becomes relatively low, at which point the gob
has a low free methane volume, as indicated by (2).
Secondly, the GoB
is still not prepared to react in time: Operation Thunderbolt, which led finally to an end of the carnage, was initiated 10 hours after the beginning of the attack.
Take the production of the coal mines in Tongxin coal mine as an example, for Working Face 8104 to 8107 of carbonic coal strata which are currently excavated, gobs
of the two Jurassic close distance coal strata and sectional coal pillars reserved in the adjacent working faces were distributed on the upper part.
's magic trick goes wrong when he the secret compartment that holds the handcuff key gets jammed.
maintains that there are only about 65,000 registered addicts in Burma.
"It will grieve with mechanical efficiency and mechanical strength," Gob
The return for GoB
after investing $ 600 million in the joint venture is so paltry that it is barely comparable with the interest on a $ 600 million fixed deposit.
The National Drug Control Council (CONALTID) is the GOB
's central CN policymaking body.
In 2009, the GOB
reported eradication of over 6,341 hectares of coca nationwide, 84 percent of which took place in the Cochabamba tropics (Chapare).
In fact, large gobs
of taxpayers' precious earnings will continue to be squandered, if not on obsolete military bases, then on warmed-over schemes for "defense conversion," "worker retraining," "high-technology infrastructure investment," and other plots of Clintonites and old-fashioned Capitol Hill politicians.