Results 111 to 120 of about 4,725,858 (203)

Research on the Coupled Transport Law and Prevention Technology of Wind Flow Dust in Large Mining Height Fully Mechanized Mining Face

E3S Web of Conferences
Addressing the challenge of high dust concentrations and difficult prevention measures in fully mechanized mining faces with significant mining heights, researchers focused on the 12 mining face of a coal mine.
Zhibao Wang, Yajuan Chen
semanticscholar   +1 more source

Crawler Type Blasthole Drilling Rig for Fully Mechanized Mining Face Crossing the Fault

, 2020
Aiming at the problem of low efficiency and high labor intensity of the traditional construction method of fully mechanized mining face crossing the fault, a crawler type blasthole drilling rig suitable for fully mechanized mining face crossing the fault
WANG Tianlong, SONG Haitao, LIU Yiyang
core   +1 more source

Multi-dimensional constraint-based coal mining machine cutting path planning technology

Meitan xuebao
The cutting path planning technology for coal mining machines is one of the key technologies for achieving intelligent mining in fully mechanized mining faces.
Shuyang SONG, Shibo WANG, Yun WANG, Lijie WANG, Dongshuai SONG   +4 more
doaj   +1 more source

Mathematical model of automatic following control in the middle of fully mechanized mining face

, 2016
With consideration of bi-directional cutting characteristics of fully mechanized mining face and analysis of coordinated control of shear, hydraulic support and scraper conveyor, a mathematical model was firstly proposed to describe curved path of ...
CUI Zhifang, YUAN Xiaoqin, LIN Jiang, SHI Yong   +3 more
core   +1 more source

Analytical solution of predicting rib spalling depth of fully-mechanized coal working face based on tri-linear strain softening model [PDF]

In order to predict rib spalling depth in fully-mechanized mining faces, taking the coal wall as the research object, the coal wall is regarded as a tri-linear strain softening material. Then the direct roof and main roof are taken as macro roof, and the
Guoming CHI, Gang LI, Gang XU, Chunhui ZHANG   +3 more
core   +1 more source

Research on “Playing Football” Type Roof Control in Fully-Mechanized Mining Face with a Super-Large Mining Height under the Background of 5G+ Big Data

Applied Sciences
With the increase of mining height at the working face, the influence range of roof fractures in the goaf increases, the advanced supporting pressure on the coal wall increases, ground pressure becomes more intense, and roof support becomes more ...
Jianyu Liu, F. Xiao, Shan Lei
semanticscholar   +1 more source

Study on the Fracture Evolution Characteristics of Overlying Strata in a Fully Mechanized Mining Face with a Large Mining Height Based on a Three-Dimensional Large-Scale Physical Simulation Experimental System

Processes
To investigate the evolution characteristics of overlying rock fractures, based on a geological prototype of a large-height comprehensive mining face in Shanxi, a three-dimensional large-scale physical similarity model was established.
Zong-Yong Wei, Yu-Cai Yin, Botao Li, Shu-Gang Li, Hai-Fei Lin, Peng Xiao, Yang Ding   +6 more
semanticscholar   +1 more source

Study on Prevention and Control Technique of Ground Pressure in Fully Mechanized Mining Remained Coal Pillars

, 2011
Based on the strong danger and great difficulty characteristics of coal pillars mining under strong ground pressure in Datong coal district, the observations on the No.311 coal face in Tongjialiang coal mine were carried out by the method of drilling ...
Hong Chun Xia, Zhen Qi Song, Wei Li
core   +1 more source

Conceptual design system of three machines matching of fully mechanized coal mining equipment

, 2018
In view of problems that most of existing intelligent design methods of fully mechanized coal mining equipment are not considered complex coupling relationship among design parameters of three machines matching, which leading to poor applicability of the
DUAN Qi, DENG Jintao, DING Hua, WANG Yiliang   +3 more
core   +1 more source

Mechanism of instability induced scour of thick hard rock-coal pillar structure in deep fully mechanized working face with large mining height

Yantu gongcheng xuebao
The instability-induced rockburst of thick hard rock stratum-coal pillar structure is a typical rockburst mode in Ordos deep mining area, and its mechanism is still unclear.
ZHANG Xiang 1, ZHU Sitao 1, 2, JIANG Fuxing 1, LIU Jinhai 1, ZHU Quanjie 3, SHI Xianfeng 3, HAN Gang 4, WEI Xiaohu 5, CAO Jinglong 4, QU Xiaocheng 6
doaj   +1 more source