Results 201 to 210 of about 353,530 (338)

Impact and elastic modulus of coal mining on terrestrial ecosystems. [PDF]

Sci Rep
Dong J, Dai W, Xu J, Zhang H, Li Y, Xie F.   +5 more
europepmc   +1 more source

NORTH DAKOTA LIGNITE ENERGY INDUSTRY'S CONTRIBUTION TO THE STATE ECONOMY FOR 2001 AND PROJECTED FOR 2002 [PDF]

This report provides estimates of the lignite industry's contribution to the North Dakota economy, using key economic indicators such as retail trade activity, personal income, total business activity, employment, and tax revenues.
Coon, Randal C., Leistritz, F. Larry
core   +1 more source

Map showing projected land disturbance by surface mining of coal in Campbell County, Wyoming [PDF]

, 1978
N.J. Noreen, David W. Moore
openalex   +1 more source

Stress Relief Effects of Roof‐Cutting at the Junction Zone Between Gob‐Side Entry and Stope Within Extra‐Thick Coal Seams

Energy Science &Engineering, EarlyView.
The analytical model of severe ground pressure in JZGS: (a) Overlying rock strata structure above the stope and gob‐side entry; (b) in situ monitoring of advanced and lateral abutment pressures. Many studies have demonstrated that the overlying strata above the stope and gob‐side entry fracture and collapse at specific angles [28‐30], forming broken ...
Wenrui He, Fulian He, Wenli Zhai
wiley   +1 more source

Influence of surface coal mining on carbon storage in semi-arid steppe. [PDF]

Sci Rep
Wu Z, Yu Q.
europepmc   +1 more source

Future Prospects of Japan Coal Mining Industry

, 1965
Minoru Nakano
openalex   +2 more sources

Study on the Hierarchical Grouting Reinforcement Control of Low Permeability Surrounding Rocks of Deep Roadway

Energy Science &Engineering, EarlyView.
Mechanism and Application of Hierarchical Grouting in Low‐Permeability Surrounding Rocks ABSTRACT To solve the problem of grouting reinforcement of low permeability argillaceous surrounding rocks of deep roadway, the zonal failure characteristics of the surrounding rock and the mechanism and technology of hierarchical grouting reinforcement were ...
Tongqiang Xiao, Yonghui Ren, Huaizhen Li, Wenlong Shen, Housheng Jia, Shuaishuai Yue, Fayi Liu   +6 more
wiley   +1 more source

Monitoring method for borehole images of changes in overlying rock structure during coal mining. [PDF]

Sci Rep
Jinchao W, Junpeng Z, Chao W, Zengqiang H, Xiaobin L, Ming C.   +5 more
europepmc   +1 more source

A New Model for Calculating Voidage in Goaf Under Roof‐Cutting Pressure Relief Mining: Exploring the Influence of Volumetric Strain on Voidage From the Perspective of Finite Element

Energy Science &Engineering, EarlyView.
ABSTRACT Roof cutting and pressure relief mining technology has been applied in coal mine enterprises because of its advantages of improving the resource utilization rate. Compared to the previous longwall mining mode, the roof unloading and caving characteristics of goaf have undergone significant changes, leading to different patterns of overlying ...
Mengke Liu, Haidong Chen, Xiangjun Chen, Lin Wang, Shuailong Feng   +4 more
wiley   +1 more source

Robust parameter inversion of coal mining subsidence based on the combination of RANSAC and DE algorithms. [PDF]

Sci Rep
Chen Y, Wang L.
europepmc   +1 more source