Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Xianjie DU"'
Publikováno v:
工程科学学报, Vol 46, Iss 8, Pp 1370-1380 (2024)
To study the effect of height–diameter ratio on the uniaxial compression performance of gangue-cemented backfill columns, five groups of cylindrical specimens with height–diameter ratios of 0.5, 1.0, 2.0, 3.0, and 4.0 were prepared for uniaxial c
Externí odkaz:
https://doaj.org/article/c34627fdcef14dec97de0c530c48a390
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 5, Pp 36-45 (2024)
In the process of constructional backfilling coal mining (CBCM), the demand for the strength of cemented gangue backfill (CGB) samples varies with different backfill rates. It is planned to adjust the strength of CGB samples by changing the proportio
Externí odkaz:
https://doaj.org/article/ae3c265c7a1d486daca83a26b3f34a03
Publikováno v:
International Journal of Mining Science and Technology, Vol 32, Iss 6, Pp 1197-1206 (2022)
To reduce the cost of backfilling coal mining and utilize the underground space of coal mines, a new backfilling mining method with low backfilling rate called constructional backfilling coal mining (CBCM) is proposed. The “backfilling body-immedia
Externí odkaz:
https://doaj.org/article/9477172a2269425ab468ec854aa98315
Publikováno v:
International Journal of Mining Science and Technology, Vol 31, Iss 3, Pp 401-412 (2021)
To investigate the creep and instability properties of a cemented gangue backfill column under a high-stress area, the uniaxial compression creep tests were conducted by single-step and multi-step loading of prismatic samples made of cemented gangue
Externí odkaz:
https://doaj.org/article/b595ba118b7e49b2b3275abbfa4c3755
Publikováno v:
Advances in Civil Engineering, Vol 2020 (2020)
Cemented gangue backfill material (CGBM) is made of coal gangue, fly ash, cement, and water. The backfill body will be corroded by mine water that contains different kinds of corrosive ions. The paper mainly aimed to study the diffusion process of su
Externí odkaz:
https://doaj.org/article/6bb3410643814267951a758e39fcb90d
Publikováno v:
Advances in Materials Science and Engineering, Vol 2020 (2020)
To reduce the amount of cement used in cemented coal gangue backfill (CCGB, a mixture of coal gangue, cement, fly ash, and water), mechanical and deformation properties of CCGB in which CSFA partially replaces the cement (0, 10, 20, 30, and 40 wt%) w
Externí odkaz:
https://doaj.org/article/6812e288471e40daaf683749595346e0
Publikováno v:
Advances in Materials Science and Engineering, Vol 2019 (2019)
Cemented coal waste backfill material (CCWBM) is developed for backfilling the goaf in coal mines. As fresh CCWBM slurry is generally transported into underground openings through a pipeline, the fluidity of fresh slurry becomes one of the most impor
Externí odkaz:
https://doaj.org/article/e5b9f5e617a3405d9cfe424ae15eeaa5
Publikováno v:
Advances in Civil Engineering, Vol 2018 (2018)
The acoustic emission (AE) characteristics, change law of the ultrasonic velocity, and internal failure mode of cemented waste concrete-coal gangue backfilling (CWCGB) with 600 days of curing time were studied under uniaxial loading conditions. Waste
Externí odkaz:
https://doaj.org/article/9b99ac5e28464e02b8fe8e1af0c3b764
Autor:
Jun Guo, Guo-rui Feng, Ting-ye Qi, Pengfei Wang, Jian Yang, Zhen Li, Jinwen Bai, Xianjie Du, Zehua Wang
Publikováno v:
Shock and Vibration, Vol 2018 (2018)
The uniaxial cyclic loading tests have been conducted to study the mechanical behavior of dry and water saturated igneous rock with acoustic emission (AE) monitoring. The igneous rock samples are dried, naturally immersed, and boiled to get specimens
Externí odkaz:
https://doaj.org/article/6ce3e790382744fcab0d4aac30d227d2
Autor:
Jinwen Bai, Guorui Feng, Shanyong Wang, Tingye Qi, Jian Yang, Jun Guo, Zhen Li, Xianjie Du, Zehua Wang, Yunlou Du, Yujiang Zhang
Publikováno v:
Royal Society Open Science, Vol 5, Iss 8 (2018)
Upward mining of the residual coal seam over an abandoned pillar working is one of the effective measures to alleviate the contradiction between limited resources and increased consumption. Interburden stability over an abandoned pillar working plays
Externí odkaz:
https://doaj.org/article/2b9712cdb5804a7b87f4183d06ad0544