Results 81 to 90 of about 652 (167)

Key technology of cutting roof in fully mechanized caving face with a height of 6 m

Meikuang Anquan, 2021
In order to solve the problem of roof sinking and serious floor heave caused by mining without coal pillar in No.2 coal mine of Sangshuping in Hancheng Mining Area, the field test and construction of roadway retaining along gob in fully mechanized caving coal with a height of 6 m were carried out.
openaire   +1 more source

Analysis of overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam

矿业科学学报, 2017
In order to grasp the overburden structure and support working resistance of working face in fully-mechanized top coal caving with large mining height in ultra thick coal seam, this paper study the ultra thick coal seam in Tongxin coal mine.The fracture ...
Hou Yunbing, He Shangsen, Zhou Dianqi, Han Shuai, Zhou Yu   +4 more
doaj  

Analysis of Ground Behavior Regularity of Fully Mechanized Face with Extra Thick Coal Seam

Gong-kuang zidonghua, 2011
The paper used methods of field strata control observation and RFPA numerical simulation to analyze and study ground behavior regularity of fully mechanized face with extra thick coal seam of easy spontaneous combustion in Gengcun Coal Mine.
REN Yong-kang, LI Bao-fu, WANG Fu-li
doaj  

Simulation and Field Measurement Study on Roof Strata Behavior of Fully Mechanized Caving Face [PDF]

Proceedings of the 8th Russian-Chinese Symposium "Coal in the 21st Century: Mining, Processing, Safety", 2016
Wang Jianning, Song Wencheng, Liu Weitao
openaire   +1 more source

Study on mechanism of air distribution volume's influence on airflow, dust migration and spray dust reduction in fully mechanized caving face. [PDF]

Sci Rep
Hongjie Z, Shaocheng G, Tian Z, Deji J, Xi C, Xingyu C.   +5 more
europepmc   +1 more source

Study on Flow Field Evolution Law of Goaf in Fully Mechanized Caving Face and Gel Air Leakage Blocking Technology under Withdrawal Condition. [PDF]

ACS Omega
Xie S, Dong C, Liu X, Li L, Wang G, Hao R.   +5 more
europepmc   +1 more source

Simulation on Harmful Gas Control by Balanced Pressure Ventilation in the Fully Mechanized Caving Face under Sealed Fire Area of Small Coal Mine. [PDF]

ACS Omega
Fan C, Sun H, Yang L, Xiao B, Xu L.
europepmc   +1 more source

Optimization of drawing parameters based on top-coal flow law in thick-seam caving mining. [PDF]

Sci Rep
Wu S, Xu X, Wang J, Kong D, Wu G, Liu Q, Zuo Y.   +6 more
europepmc   +1 more source

Evolution and dip effect of boundary spatial morphology of top-coal limit equilibrium zone in steeply dipping coal seam. [PDF]

Sci Rep
Wu X, Chi X, Lang D, Wu Y, Zhang Z, Chen S.   +5 more
europepmc   +1 more source

Characteristics of overburden failure and evolution of fractures in fully mechanized top coal mining face. [PDF]

Sci Rep
Wang X, Liu F.
europepmc   +1 more source