Results 121 to 130 of about 934 (182)

Theoretical study on the pressure relief range of the upper protected coal seam in protective layer mining. [PDF]

Sci Rep
Zhan K, Zhang B, Wang M.
europepmc   +1 more source

Feasibility study and optimal coal drawing process for fully mechanized caving in close-distance extra-thick coal seams

Gong-kuang zidonghua
Research on optimal coal drawing parameters for working faces with significant variation in seam thickness, where the thickness exceeds the standard mining height in close-distance coal seams, has been limited. This study focused on the feasibility and optimal coal drawing process for fully mechanized caving in the 011N1−1 working face of the Xilutian ...
ZHANG Wei, GAO Peng, CUI Bo, Asihaer·Niyazibieke, PAN Weidong   +4 more
openaire   +1 more source

Research on the law of multiple mining in close coal seams and the roadway support of lower coal seam. [PDF]

Sci Rep
Wu X, Guo L, Sun Y, Wu X, Zhang N.
europepmc   +1 more source

Mine pressure behavior law and fault activation response of normal fault zones in thick coal seams under mining disturbance. [PDF]

Sci Rep
Xin T, Ji Y, Wang J, Wang B, Bai G, Jin J.   +5 more
europepmc   +1 more source

Evolution of Overburden Fractures and the Water-Conducting Fracture Zone in Closely Spaced Coal Mine Seams under Highly Water-Rich Aquifers. [PDF]

ACS Omega
Liu X, Zheng L, Liu H, Zuo Y, Ren W, Zhu X, Zhou X.   +6 more
europepmc   +1 more source

Research on stability analysis and control technology of roadways in the underlying isolated island working face. [PDF]

Sci Rep
Gao X, Wang Y, Li YM.
europepmc   +1 more source

Study on the Failure Law of Overlying Strata in Thick Coal Seam Mining under the Condition of Shallow Burial Depth, Thick Loose Layers, and Thin Bedrock. [PDF]

ACS Omega
Ren K, Li G, Zhang J, Zong B, Yan G, Liu H, Guo G, Wang B, Wang Y.   +8 more
europepmc   +1 more source

Mechanisms of stress distribution influenced by numerical model size and goaf parameters in multi-coal seam mining. [PDF]

Sci Rep
Wang N, Paneiro GA, Li Y, Liu Y.
europepmc   +1 more source

Study on the effect of solid particle proppant on fracture support and flow conductivity in coal seam. [PDF]

Sci Rep
Zhang C, Chen Z, Zhang Z, Wu X, Ma J, Chen J.   +5 more
europepmc   +1 more source

Study on pressure-relief effect and protection scope of long-distance lower protective seam mining based on similar physical simulation and PFC^3D. [PDF]

Sci Rep
Zhan K, Liu Z, Wei D, Yao W, Zhou W, Zhu R, Yuan Y, Yang Y, Zhang D, Li B.   +9 more
europepmc   +1 more source