Results 41 to 50 of about 3,295 (188)

Study on mechanical properties of polymer cement slurry-coal interface transition zone

Meikuang Anquan, 2021
Advanced deep hole grouting reinforcement technology is proposed. The effects of VAE emulsion on cement-based materials were studied. The effects of VAE emulsion on the bonding strength between cement based materials and coal and the compressive strength
LIANG Hualei, HAN Xiaolong, CHEN Xinming, JIN Xiangfei, JIAO Huazhe, SHI Yuliang   +5 more
doaj   +1 more source

Combustion of pipelineable coal-water slurries

, 1991
The use of liquids or fluids to transport coal through pipelines is not new, nor is the application of coal liquid slurries as fuels in industrial combustion systems. However, it does appear that there are a number of conflicting areas which preclude coals from performing well in a pipeline transportation mode and as a coal-liquid fuel (CLF).
H Whaley, K V Thambimuthu, G N Banks, J K L Wong   +3 more
openaire   +1 more source

Multiple injection techniques to stimulate complex fracture networks in coal reservoirs: A case study on gas disaster reduction of subsurface coal mine in southwest China

Deep Underground Science and Engineering, EarlyView.
An experimental device for physical simulation of hydraulic fracturing, comprising: a load‐bearing mechanism with multiple interconnected plates that collectively form an sample chamber; a load‐generating mechanisms, with multiple load‐generating mechanisms arranged within the experimental chamber.
Delei Shang, Farui Shi, Jun Lu, Minghui Li, Cunbao Li, Heping Xie   +5 more
wiley   +1 more source

Experimental Study on Water Reduction Modification and Efficient Utilization of Coal-Based Solid Waste Slurry

Advances in Civil Engineering
Unreasonable treatment of coal-based solid waste and coal mining damage are important factors that cause negative environmental effects. Overburden isolated grouting, a green mining method, can realize solid waste emission reduction and coal mine ...
Chengwei Ma, Dayang Xuan, Jialin Xu, Jian Li   +3 more
doaj   +1 more source

Application and prospect of coal gangue slurry filling technology

Meitan kexue jishu
In order to realize in-situ, green and large-scale disposal of coal gangue, coal gangue slurry filling technology, as a new filling technology, has been rapidly developed and applied in recent years.
Lei ZHU, Wenzhe GU, Chaofeng YUAN, Chengyong LIU, Hao PAN, Tianqi SONG, Fengtian SHENG   +6 more
doaj   +1 more source

Study on the composite fracture characteristics of filling and reinforcing cracked rock mass after high temperature damage

Deep Underground Science and Engineering, EarlyView.
Cement infill shares compressive and shear stresses during loading, while interfacial friction hinders crack propagation and reduces stress concentration, improving the rock's load‐bearing capacity. Failure modes vary with crack inclination. Unfilled specimens show four modes.
Shihao Yuan, Qiang Sun, Jianjun Hu, Liwei Zhang, Jishi Geng   +4 more
wiley   +1 more source

Carbon emission assessment of tunnel infrastructures: From construction to operation

Deep Underground Science and Engineering, EarlyView.
This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Study on pH change characteristics of coal-water slurry containing potassium permanganate under the action of H2S

Desalination and Water Treatment
Based on the response surface methodology, the pH change characteristics of coal-water slurry containing potassium permanganate (KMnO4) under the action of hydrogen sulfide (H2S) were studied, and the relationship between the factors of coal seam H2S ...
Qigen Deng, Chaosi Liu, Mengmeng Yao, Zhecheng Zhang   +3 more
doaj   +1 more source

Effect of slurry conditioning on flocculant-aided filtration of coal tailings studied by low-field nuclear magnetic resonance and X-ray micro-tomography

International Journal of Mining Science and Technology, 2020
The present work aimed to study the effect of slurry conditioning on flocculant-aided filtration of coal tailings by the analysis of filtration kinetics and filter cake structure.
Pengfei Hu, Long Liang, Guangyuan Xie, Shaoqi Zhou, Yaoli Peng   +4 more
doaj   +1 more source

Uniaxial compressive strength prediction and ratio parameter optimization of titanium tailings composite backfill materials using intelligent hybrid models

Deep Underground Science and Engineering, EarlyView.
Based on the 90 datasets, ERT and four optimization algorithms were used to build four hybrid models to predict the UCS of the backfill body. The SMA‐ERT model was the most effective model, and it can reliably guide the design of the backfill ratio parameters. Abstract This study analyzed the feasibility of using titanium (Ti) tailings as a backfilling
Weijun Liu, Zida Liu, Zhixiang Liu
wiley   +1 more source