Fangtian Wang
China University of Mining and Technology
Coal miningAutomationGeologyEngineeringLongwall miningBedrockBoreholeResidualMining engineeringDirectional drillingMechanism (engineering)Permeability (earth sciences)SubsidenceGeotechnical engineeringCompactionFace (geometry)DrillingRoofOverburdenFracture zoneHydraulic fracturingSupport systemWorking environmentExcavationEnvironmental scienceRock mass classificationFracture (geology)Computer simulationRock blastingCoalGangueGroundwaterPetroleum engineeringStress (mechanics)
25Publications
12H-index
574Citations
Publications 22
Newest
#1Cun Zhang (CUMT: China University of Mining and Technology)H-Index: 16
#2Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
Last. Qingsheng Bai (Freiberg University of Mining and Technology)H-Index: 1
view all 3 authors...
Abstract A large number of abandoned mines with sizeable underground space resources were formed in China. Meanwhile, for an operational mine, the protection and utilization of mine water resources are increasingly important for ecological environment construction. The coal industry faces difficulties regarding safe and efficient utilization of abandoned mine resources and protection of the ecological environment in the operational mines. As a solution to these problems, underground water reserv...
7 CitationsSource
#1Qingsheng Bai (CUMT: China University of Mining and Technology)H-Index: 14
#2Zhenghe Liu (TUT: Taiyuan University of Technology)H-Index: 1
Last. Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
view all 4 authors...
Abstract In this study, hydromechanical hybrid finite-discrete element method (FDEM) models were employed to investigate hydraulic fracturing from oriented perforations at the microscale. Numerical calibrations were first used to obtain the microproperties that can represent the realistic behavior of sandstone. The fracture morphology and breakdown pressure obtained from the numerical hydraulic fracturing show reasonable agreements with the experimental results, indicating that the numerical res...
2 CitationsSource
#1Qingsheng Bai (CUMT: China University of Mining and Technology)H-Index: 14
#2Shihao Tu (CUMT: China University of Mining and Technology)H-Index: 19
Last. Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
view all 3 authors...
One of the most challenging problems in longwall top coal caving is the top coal cavability. Stone bands, which are usually found in thick coal seams, have shown adverse effects on top coal fragmentation and cavability. Understanding the characteristics of the stone band caving process is a primary step in evaluating top coal cavability in such conditions. In this study, a series of laboratory tests was implemented to find an appropriate construction material that can truly display the whole cav...
13 CitationsSource
#1Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
#2Cun Zhang (CUMT: China University of Mining and Technology)H-Index: 16
Highwall mining (HWM) technology is an efficient method for exploiting residual coal resources in Chinese open-pit coal mines. However, on-site personnel and equipment can be damaged by the instabi...
4 CitationsSource
#1Fangtian WangH-Index: 12
#2Cun ZhangH-Index: 16
Last. Ningning LiangH-Index: 1
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A thin coal seam mined as a protective coal seam above a gas outburst coal seam plays a central role in decreasing the degree of stress placed on a protected seam, thus increasing gas permeability levels and desorption capacities to dramatically eliminate gas outburst risk for the protected seam. However, when multiple layers of coal seams are present, stress-relieved gas from adjacent coal seams can cause a gas explosion. Thus, the post-drainage of gas from fractured and de-stressed strata shou...
17 CitationsSource
#1Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
#2Chaohua Duan (Longyan University)H-Index: 1
Last. Qingsheng Bai (CUMT: China University of Mining and Technology)H-Index: 14
view all 5 authors...
Abstract While the fully-mechanized longwall mining technology was employed in a shallow seam under a room mining goaf and overlained by thin bedrock and thick loose sands, the roadway pillars in the abandoned room mining goaf were in a stress-concentrated state, which may cause abnormal roof weighting, violent ground pressure behaviours, even roof fall and hydraulic support crushed (HSC) accidents. In this case, longwall mining safety and efficiency were seriously challenged. Based on the HSC a...
17 CitationsSource
#1Qingsheng Bai (CUMT: China University of Mining and Technology)H-Index: 14
#2Shihao Tu (CUMT: China University of Mining and Technology)H-Index: 19
Last. Cun Zhang (CUMT: China University of Mining and Technology)H-Index: 16
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Abstract In longwall mining, hard roofs located immediately above the coal seam should not cave and cause ground control problems around the working longwall face. In this paper, comprehensive field observations and numerical simulations were used to investigate the chain pillar and adjoining gateroad failure during a longwall top coal caving (LTCC) face retreat at the Majialiang coalmine located in Shanxi, China. The results show that hard roof strata did not cave behind the longwall face but o...
69 CitationsSource
#1Fangtian Wang (CUMT: China University of Mining and Technology)H-Index: 12
#2Shihao Tu (CUMT: China University of Mining and Technology)H-Index: 19
Last. Qingsheng Bai (CUMT: China University of Mining and Technology)H-Index: 14
view all 5 authors...
The height and evolution mechanism of fractured water-flowing zones are of great importance for prevention of water inrush disasters and protection of immediate environments, particularly in ecological vulnerable areas. In this paper, comparative approaches including empirical formula calculation, physical simulation, numerical simulation and PROTEM transient electromagnetic analysis are employed to identify the development of the fracture zones caused by water-flowing so as to ensure mining saf...
45 CitationsSource
The protective seam mining has become one of the most important measures of preventing outburst hazard in the deep outburst coal seam. The comprehensive study of gas permeability change rules and gas seepage rules of the protected seam close to the protective seam in the mining process of the protective seam need to be carried out. Based on the current researches, the secondary development of flow model using FISH language is embedded in FLAC3D. Combined with the in situ conditions, the permeabi...
10 CitationsSource
#1Chen Cao (UOW: University of Wollongong)H-Index: 8
#2Ting Ren (UOW: University of Wollongong)H-Index: 25
Last. Fangtian WangH-Index: 12
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17 CitationsSource