Results 111 to 120 of about 670,391 (188)

Mechanical analysis of rock burst induced by fracture and rebound of rock pillar in mining of steeply inclined extra-thick coal seam group

Meitan xuebao
In order to reveal the mechanism of breaking and inducing rock pillars between coal seams in steeply inclined and extra thick coal seam group mining, the mining of steeply inclined and extra-thick coal seam group in Wudong Coal Mine is taken as the ...
Shenghu LUO, Chengyang TIAN, Yongping WU, Panshi XIE, Hongwei WANG, Ding LANG, Zhuangzhuang YAN, Gang HAN, Mingming SUN   +8 more
doaj   +1 more source

Research and application of roadway roof or floor coal thickness detection technology based on coal-rock interface wavefield characteristics

Meitan kexue jishu
Coal seam thickness is a key controlling factor for coal mine production and safety，as well as a core parameter for the construction of smart mines. Traditional detection methods have achieved some success in medium- and thin-seam coal mines; however, in
Yanghao PENG, Zhenjie PENG, Li HAI, Yajun WANG, Wei HAN   +4 more
doaj   +1 more source

Damage and fracture field evolution in the overburden of an extremely thick coal seam under multi-layered fully mechanized top-coal caving mining

Objective Multi-layered fully mechanized top-coal caving mining represents a primary method for exploiting extremely thick coal seams. Quantitatively characterizing the damage patterns and fracture field evolution characteristics of the overburden in ...
Ruihang, ZHAO, Baiqiang, FAN, Shiqi, LIU, Weidong, PAN, Baoshan, PENG, Yiming, REN, Cun, ZHANG   +6 more
core   +1 more source

Calligraphy‐Brush‐Fabricated Xuan Paper for Sustainable Direct‐Current Triboelectric Nanogenerators in Human‐Motion Energy Harvesting and Biomedical Sensing

EcoMat, Volume 8, Issue 10, October 2026.
A sustainable direct‐current triboelectric nanogenerator (DC‐TENG) was fabricated using brush‐coated Xuan paper and a water‐processable PEDOT:PSS/PVA/pullulan conductive network. The cellulose‐based composite enables intrinsic rectifier‐free DC output through interfacial charge transport at the Al/conductive interface, demonstrating an eco‐friendly ...
Min‐Hsuan Lee
wiley   +1 more source

Deterministic Cost Estimation Approaches for Carbon Capture, Utilization, and Storage: A Review

Greenhouse Gases: Science and Technology, Volume 16, Issue 5, Page 835-859, October 2026.
ABSTRACT Carbon capture, utilization, and storage (CCUS) is regarded as a connection between traditional, high‐emission sectors and future green energy. This study encompasses literature from 2003 to early 2026 to review methodologies and formulae used for cost estimating in the various segments of carbon capture, transport, utilization, and storage ...
Majid Mohajeri, Saman Azadbakht
wiley   +1 more source

Comprehensive outburst prevention technology of outburst-prone coal seam uncovered by crossdrift in Hongshan coal mine

, 2019
Coal and gas outburst is a complex geo-dynamic disaster induced by a coal seam uncovered by crossdrift, threatens the safety and efficient production of coal mines seriously. For this, Hongshan coal mine was selected as engineering background to simulate
Beifang, WANG, Haibo, CHI, Bing, LIANG, Jing, ZHANG, Pujiang, HUANG   +4 more
core   +1 more source

The Unexpected Discovery of Paleocene? Coals in Outcrops Thought to Be Cambrian, Al Huqf, Oman

Journal of Petroleum Geology, Volume 49, Issue 4, Page 1179-1194, October 2026.
ABSTRACT Two brown organic deposits were encountered whilst investigating kaolinitic claystones thought to occur at the base of a Cambrian formation at outcrop. The age of these organic deposits is probably Paleocene from palynology. Organic petrography shows that they are subbituminous coals with some oil source potential.
Mohammed H. Al Kindi, Alan P. Heward, Lorraine B. Eglinton, Steve R. Packer, Darrin T. Stead   +4 more
wiley   +1 more source

Spatial dynamic evolution process of overburden rock mining and coal-based solid waste grouting and filling practice

Meitan kexue jishu
In the process of mining thick coal seams, the overlying rock layer will undergo a gradual dynamic evolution from local deformation to overall failure under the action of mining stress, and it is easy to form underground spaces such as in-situ goafs, low-
Ke YANG, Xiaowu FENG, Xiang HE, Lei HAN, Guojun MA, Xinyuan ZHAO, Jiqiang ZHANG, Xiang YU, Zhen LIU   +8 more
doaj   +1 more source

Occurrence State and Genesis of Large Particle Marcasite in a Thick Coal Seam of the Zhundong Coalfield in Xinjiang

The Junggar Basin contains a large amount of coal resources and is an important coal production base in China. The coal seam in Zhundong coalfield has a large single-layer thickness and high content of inertinite, but large particle Fe-sulphide minerals ...
Wenfeng Wang, Xin Li, Hayerhan Xadethan, Shuo Feng, Ning Lü, Xue Wu, Jijun Tian   +6 more
core   +1 more source

Study on the law of surface subsidence in layered mining of thick coal seam with medium hard roof. [PDF]

Sci Rep, 2023
Liu X, Wei F, Tan Z, Jiang Z, Wang Y, Zhang J.   +5 more
europepmc   +1 more source