Results 51 to 60 of about 1,276 (260)

Mechanism and disaster control new technology of strong ground pressure manifestation in ultra‐large mining face

Deep Underground Science and Engineering, EarlyView.
In response to the problem of strong mining pressure manifestation along the goaf roadway in a thick coal seam mining area, this study uses a new type of combined blasting roof cutting technology to effectively control the manifestation and deformation of mining pressure along the goaf roadway.
Xiaoding Xu, Manchao He, Jun Yang, Yubing Gao, Qiang Fu, Qing Ma, Yajun Wang   +6 more
wiley   +1 more source

Influence of pipe jacking burial depth and caving body particle size on mechanical properties of pipe jacking

Meikuang Anquan
The pipe jacking rescue method is to form an emergency life passage safely and efficiently by jacking a prefabricated pipe through the caving and collapse blockage area.
Fukun XIAO, Zhiwei LAO, Kai XIE, Lingxue KONG, Chuanbo HAO   +4 more
doaj   +1 more source

Exploring microbial dynamics in ferruginous caves: taxonomic and functional diversity across seasons and cave zones

Frontiers in Microbiology
Bacterial communities in ferruginous caves are known for their high diversity and functional adaptability to environmental conditions. In this study, we characterized the taxonomic and potential functional profiles of two iron-rich caves, GEM-1423 and GEM-1462, across photic, dysphotic, and aphotic zones during both rainy and dry seasons.
Bitencourt, José Augusto Pires, Bandeira, Débora Marina, Gonçalves, Affonso Celso, Snak, Aline, de Castro, Danielly Cristina Marques, de Lima Ribeiro, Rafaela, Argolo, Leandro Araujo, dos Santos Scherer, Rafael, Lima, Brenda Almeida, Albino, Ulisses Brigatto, Pinto, Fabiana Gisele da Silva   +10 more
openaire   +2 more sources

Mechanism of “seesaw‐type” rock burst in coal seam mining beneath mountainous areas

Deep Underground Science and Engineering, EarlyView.
This study reveals the mechanism of “seesaw‐type” rock bursts during coal mining beneath mountainous areas. The advancing working face induces nonuniform fracturing of the overburden. The detached mountain mass then undergoes a seesaw‐type rotational movement around a shifting pivot, driving the primary fracture through a characteristic “open‐close ...
Chao Zhou, Xueqiu He, Zhenlei Li, Ping Wang, Dazhao Song, Fuxing Jiang, Shan Yin, Anliang Lü, Menghan Wei, Taoping Zhong   +9 more
wiley   +1 more source

Exponentially‐constrained Gaussian mixture model for quantifying vertical development of water‐conducting fracture zones in lithologically stratified mining roofs

Deep Underground Science and Engineering, EarlyView.
This study proposes an exponentially‐constrained Gaussian mixture model (EcGMM) to quantify vertical fracture heterogeneity in stratified roof strata. The model integrates a piecewise exponential decay term capturing global stress dissipation with Gaussian components representing localized fracture intensification at lithological interfaces.
Huiqing Yuan, Zhimin Xu, Weixiao Chen, Chenghang Zhang, Shijie Xiong, Yajun Sun   +5 more
wiley   +1 more source

Research on the height of “two zones” in overlying strata of fully mechanized caving mining of extra-thick coal seam based on multi-source data fusion

Meikuang Anquan
To prevent water inrush accidents in the coal mining face caused by the development of the water-conducting fracture zone in the overlying strata to the aquifer, this study conducts an in-depth study on the height of the water-conducting fracture zone ...
Lingtao KONG, Xiaoming LI, Yongjun LI, Rui XU, Xiaobin XU, Haisong ZHANG   +5 more
doaj   +1 more source

Major engineering breakthrough of Well XA‐1, the deepest ten‐thousand‐meter well in a global sedimentary basin

Deep Underground Science and Engineering, EarlyView.
Well XA‐1, completed at a true vertical depth of 11 156 m in the Shawan Sag of the Junggar Basin, is the deepest predominantly near‐vertical well drilled in a sedimentary basin. The figure shows the basin's tectonic framework and well location (a), a structural cross‐section spanning the Shawan Sag and adjacent uplifts (b), and the stratigraphic column
Fangkai Liu, Qingwen Tan, Sen Zhu, Guangyou Zhu   +3 more
wiley   +1 more source

3-D numerical simulation of the Ω caving in riverbanks

Shui kexue jinzhan, 2020
The Ω caving in riverbanks is one of the typical bank erosion patterns occurred in alluvial rivers which develops quickly and increases the instability of dikes. The numerical simulation of this type of bank erosion is still a challenging task.
Dongdong JIA, Changying CHEN, Xingnong ZHANG, Qiang YING   +3 more
doaj   +1 more source

Climatic niche divergence and high‐elevation adaptation promoted rapid diversification of Pimoa spiders in Pan‐Himalaya

Ecography, EarlyView.
The Pan‐Himalayan region harbors exceptional biodiversity, yet the origins and underlying mechanisms driving this remarkable diversity remain poorly understood, especially among species‐rich invertebrates. Pimoa spiders exhibit an intercontinental disjunct distribution across three major mountain regions: the Rockies, the Alps, and the Pan‐Himalaya ...
Xiaoqing Zhang, Zhe Zhao, Bingyue Zhu, Tongyao Jiang, Lili Shao, Stefano Mammola, Jiangni Li, Hao Xu, Bing Li, Shuqiang Li   +9 more
wiley   +1 more source

Integrative solution of stress evolution in overburden roof strata during the coal seam mining by application of complex variable functions methodology

Rock Mechanics Bulletin
Large-scale roof collapse is a major dynamic hazard threatening the safe coal mine operations. Understanding the deformation and failure characteristics of overburden rock strata, as well as deciphering the stress evolution mechanism of overburden rock ...
Yinkai Li, Hongwei Wang, Zhanbin Zhu, Daixin Deng, Naisheng Jiang   +4 more
doaj   +1 more source