Results 51 to 60 of about 844 (164)

Multi-field information fusion-based analysis of the macroscopic and mesoscopic damage evolution and location identification of caving and water-conducting fracture zones for mining overburden

Meitian dizhi yu kantan
ObjectiveFor the coal mining areas in the middle reaches of the Yellow River, there is an urgent need to determine the failure characteristics of the mining overburden and the spatial structural evolution of caving and water-conducting fracture zones in ...
Jiangbo WEI, Shuangming WANG, Lang LIU, Baoning WEI, Deyu CHONG, Zhizhen LIU, Dongkui LI, Dengdeng ZHUANG, Jing ZHOU   +8 more
doaj   +1 more source

Managing agency business groups, elite directors, and the rubber boom, 1897–1913

The Economic History Review, EarlyView.
Abstract We identify a new organizational form, the Managing Agency Business Group (MABG), demonstrating how agency houses used interlocking directorships to build groups on the basis of commercial and plantation expertise to access finance on London stock markets and local capital markets in the pre‐1914 rubber boom.
David Higgins, Steven Toms
wiley   +1 more source

Development Patterns of Fractured Water-Conducting Zones under Fully Mechanized Mining in Wet-Collapsible Loess Area

, 2022
The development pattern of fractured water-conducting zones (FWCZs) is closely related to mining safety and water conservation in mining areas. However, neither the development pattern nor the empirical formula in the prediction of the height of FWCZs ...
Shengqiang Jing, Yonghai Teng, Sihai Yi, Wei Zhu   +3 more
core   +1 more source

A Field Study Implementing New Monitoring Technology for Roof Caving and Systematic Monitoring for Gob-Side Entry Retaining via Roof Cutting in Underground Coal Mining

, 2023
The longwall mining method with gob-side entry retaining via roof cutting is a new underground coal mining method which has the characteristics of a high resource recovery ratio and environmental friendliness.
Zikai Zhang, Zhaoju Zhang, Chen Cao, Zhijie Zhu, Jun Han, Qianjia Hui, Ying Chen, Yang Chen, Bingjie Huo, Fengshuo Jia   +9 more
core   +1 more source

Imaging Point Source Groundwater Discharges in a Confined Coastal Aquifer Using Electrical Resistivity

Groundwater, EarlyView.
Marine electrical resistivity tomography (ERT) is applied to characterize point‐source submarine groundwater discharge (PSGD) along NW Yucatán. ERT observations and forward modeling constrain conduit detectability under varying hydrogeological conditions.
Mariana Gómez‐Nicolás, Armando Huitzilt‐Rodriguez, Enrique Iñiguez, Roger Pacheco‐Castro, Marco Pérez‐Flores, Paulo Salles, Fiona Whitaker   +6 more
wiley   +1 more source

Research progress on intelligent coal caving theory and technology

Gong-kuang zidonghua
The longwall top-coal caving technology is an effective method for extracting thick and ultra-thick coal seams, and it has become a hallmark technology in China's coal mining industry.
WANG Jiachen, YANG Shengli, LI Lianghui, ZHANG Jinwang, WEI Weijie   +4 more
doaj   +1 more source

The state of knowledge on four families of Syngnathoidei fishes (Teleostei: Syngnathiformes): Aulostomidae, Centriscidae, Fistulariidae and Solenostomidae

Journal of Fish Biology, EarlyView.
Abstract Knowledge on the ecology and life‐history traits of coastal marine species is vital to inform their conservation and management, especially as their coastal habitats come under increasing threats. However, such data have never been collated for four of the five families in the suborder Syngnathoidei—the close relatives of the better‐studied ...
Syd J. Ascione, Elsa Camins, Miguel Correia, Amanda C. J. Vincent   +3 more
wiley   +1 more source

Ground Grouting Reinforcement Roof Technology for Coal Mining Under Direct Cover of Caving Belt

, 2020
In order to solve the problem of strengthening the broken roof of the coal seam under the direct cover of the caving zone, taking the 7228 working face of Xutuan Coal Mine as the engineering background, the paper proposes the ground grouting ...
MENG Xiangshuai, LU Haifeng, NIAN Bin, YU Yu
core   +1 more source

The Industrial Organization of Regulatory Capture

Social Science Quarterly, Volume 107, Issue 4, July 2026.
ABSTRACT Objective This study evaluates the role that the economic organization of an industry plays in its ability to successfully pressure government regulators for laxer enforcement Methods The effect of the industrial organization of the coal mining industry on environmental regulation is assessed using pooled cross‐sectional time‐series analyses ...
Neal D. Woods, Kenneth Aba, Spencer Baily   +2 more
wiley   +1 more source

Intelligent long wall top coal caving mining

Longwall Top Coal Caving (LTCC) mining technology is an effective method for mining thick and extra thick coal seams in China.Since its application in China in 1982, significant progress has been made, forming a variety of mining modes such as LTCC with ...
Jiachen Wang (505061), Yang Li (7082)
core   +1 more source