In the comprehensive treatment of coal face gas in Panyi Mine, high level suction roadway above the coal seam top and embeded suction pipe were used to draw out gas, which obtained good effect.

The research shows that through constructing downward drilling to extract in floor suction roadway by properly using various exiting resource and technique the gas controlling problem of no high level suction roadway caused by unpunctual drivage of mining face is settled,indicates that temporal benefit and economic benefit are obtained,gas comprehensive controlling.

In combination with the economic profits that is obtained in first mining district in the third level of Xinxing Coal Mine,the methods with constituting roadway arrangement in complex areas are put forward.

Optimizing roadway arrangement way unceasingly,reducing the tunnel drivage ratio is an important task in the mine mining design process.

By some examples of mine development arrangement,several preferential ways of mine development arrangement,roadway arrangement,and their importance under the appropriate conditions of mining are discussed.

Practice on gateway layout and support technology of mechanized top coal caving mining face in steep inclined seam;

With the on the gateway layout,support method,mining technology and mining result of the mining technology crossing rock crosscut,the paper stated that the longwall strike retreat mining method to cross over the rock crosscut could not only be feasible in the technology and safety,but also could have an economic benefit.

Research on full-seam mining adopted roadway layout of stagger arrangement in thick coal seam;

After comparing mining options in steep inclined thin seam group at Zhaojiaba coal mine,the roadway layout of combined mining is selected.

Analysing the present resources and roadway layout of Fangezhuang Coal Mining Company of Kailuan Co.

Adopting reasonable tunnel layout,advanced coal mining technology,reducing the tunnel heading amount and dropping tunnel heading rate,can drop the production cost and lift economic benefit of business.