Results 151 to 160 of about 6,281 (245)

Research on dynamic movement law of hydrogen sulfide on fully mechanized caving face of coal mine

Gong-kuang zidonghua, 2020
In view of problems such as difficulty in verifying reliability of research results, the single method is often used to study distribution law of hydrogen sulfide (H2S) concentration in fully mechanized caving face of coal mine, taking a coal mine working face in Shaanxi as research background, H2S concentration distribution and dynamic movement law of
JIN Yongfei, XU Yaqi, LIU Yin, ZHANG Dian, GUO Jun   +4 more
openaire   +1 more source

Calculation method of support working resistance for fully mechanized top-coal caving face with large mining height in extra-thick coal seam based on structural mechanics analysis of low-lying overburden

Meitan xuebao
To explore the mechanism of hydraulic support pressure and the calculation method of working resistance for super-high mining height fully mechanized top-coal caving face in extra-thick coal seam, taking the Tashan mine field in Datong mining area as the
Jun GUO, Zi WANG, Guorui FENG, Hongfei DUAN, JinWen BAI, LiRong LI, Xiaoze WEN, Wenbo HUANG, Jie ZHANG, Longlong YANG, Quan LIU, Jiahao ZHANG   +11 more
doaj   +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  

Planning for Planning - Coal: Issues for the Eighties [PDF]

, 1982
This Collaborative Paper contains the technical papers presented at IIASA's Task Force Meeting held at the Institute in November 1980 entitled "Planning for Planning -- Coal: Issues for the Eighties", This meeting was part of a research program at ...
Stachowicz, J., Tomlinson, R.
core  

Theory and practice of integrated coal production and gas extraction [PDF]

, 2015
Liang Yuan
core   +1 more source

Report of activities of the advanced coal extraction systems definition project, 1979 - 1980 [PDF]

During this period effort was devoted to: formulation of system performance goals in the areas of production cost, miner safety, miner health, environmental impact, and coal conservation, survey and in depth assessment of promising technology, and ...
Isenberg, L., Lavin, M. L.
core   +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

Nitrogen Injection and Fire Prevention Technology for Short Arm High Mining Height Fully Mechanized Caving Face

Meikuang Anquan, 2020
To determine the important nitrogen injection process parameters, such as the reasonable nitrogen injection flow rate, the nitrogen injection pipeline spacing and the initial nitrogen injection depth in the goaf, the beam monitoring system is continuously monitored on the return air side of the working face to monitor the variation laws of O2 ...
openaire   +1 more source

Acid mine drainage control in mining areas: identification of groundwater recharge pathways and source reduction strategies. [PDF]

Sci Rep
Zhang C, Zhang F, Mu W, Li H.
europepmc   +1 more source