Shock and Vibration / 2019 / Article / Tab 1

Research Article

Analysis of the Occurrence Mechanism for Coal and Gas Outburst Based on Multiple Discriminant Indices

Table 1

Lithology and thickness of the roof and floor of Panel 31020.

NameLithologyFeature descriptionThickness

Main roofFine sandstoneGray fine sandstone with a small number of patches at the top, sandy mudstone, mica sheets, and strips at the middle and lower parts10.9 m
Immediate roofSandy mudstoneGray-black sandy mudstone, dense, mica-bearing fragments4.01 m
Immediate floorMudstoneGray mudstone0.3 m
Main floorSandy mudstoneGray sandy mudstone, massive1.5 m∼12 m

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.