Sentence examples for side roadways from inspiring English sources

Because larger mining depths cause higher ground stresses, it becomes extremely difficult to maintain long gob side roadways.

Because the larger mining depths cause higher ground stresses, maintaining long gob side roadways is extremely difficult and the roadways suffer significant deformation.

In Zhuji mine, the No. 11-2 seam is extracted as a protective seam with the pillarless mining method by retaining goaf-side roadways prior to its overlying No. 13-1 seam.

One of such breakthroughs is the integrated coal production and gas extraction technologies for pillarless mining of multiple seams of low permeability with the "Y" type ventilation system through retaining goaf-side roadways.

Technologies for roadways include support with strengthened bolting, meshing, and grout injection, a self-moving shield for reinforced support in mining-perturbed roadways, and building of packing walls for retaining gob-side roadways.

Based on the geological conditions of the coal seams in Huainan mining area, the technology of integrated coal production and gas extraction was innovated by Yuan Liang through mining a protective seam with retained goaf-side roadways and "Y" type ventilation system.

The spatiotemporal evolution rule of the rock deformation and fracture surrounding gob-side roadway is obtained.

A goaf-side roadway is retained (pillarless mining) and Y type ventilation is adopted for the panel extraction (Lu et al. 2013) (Fig. 1).

(3) The "arch-in-arch" mechanical structure of the internal goaf was bounded by an expansion angle of broken strata in the lateral direction of the retained goaf-side roadway.

Physical modeling test has been undertaken to simulate the goaf-side roadway retaining process in mining the first panel 1111 1) of the protective No. 11-2 seat at Zhuji mine in Huainan mining area.

A series of plane-strain physical model experiments are carried out to study the spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway, which is subjected to the pressure induced by the mining process.