Sentence examples for face roadway from inspiring English sources

Based on the engineering project on a small coal pillar of 12,521 working face roadway in Xieqiao Coalmine, data regarding surface displacements of the coal pillar, deep displacements and mining stress have been collected and analyzed.

On this basis, we have confirmed that when the width of a longwall mining face roadway protection coal pillar is between 11.6 m and 13.16 m in No. 4 coal seam of Xinrui coal mine in Lvliang in Shanxi province the elastic core region in the coal pillar can be assured and the roadway will be located in the area of lower stress which is outside the peak stress.

The successful application of the new dust mitigation system also demonstrates its potential use in underground longwall faces, roadway development and subsurface tunnel excavations by roadheader.

Based gas is primarily a result of fallen coal, work face and roadway coal walls.

Open image in new window Fig. 10 The appearance of the working face 1112 1) roadway retention.

In Fig. 58d, due to the further increase of coal pillar width, the effect of the stress of the adjacent mining face on roadway decreased significantly.

To solve this problem, we introduce the large gradient transition matching manner for 7 m cutting height or the large gradient + short gradual transition for 8 m cutting height and supporting equipment to achieve one-time transition from working face to roadway, which could recycle more than 0.4 million tons coal in one working face, as shown in Fig. 5.

"If your window's facing the backyard, your noise levels may be much, much lower in rooms that are not facing the roadway". That's less helpful if you live near an airport, like Philadelphia International Airport, the site of the study.

Rights-of-way could be returned or resold to businesses that face the roadways; promenades for pedestrians could be widened and lined with trees; housing could be added to the right real estate market of major cities.

The stress distribution and its variation in the rocks surrounding coal faces and roadways were calculated, and the formulae for estimating gataroad convergence were suggested based on the statistical analyses of monitoring data, laboratory tests and numerical results.

Aethalometers were placed with air inlets outside second- or third-floor classroom windows that faced adjacent roadways.