Suggested Topics within your search.
Suggested Topics within your search.
-
401
-
402
Influence of soil and climatic conditions on the chemical composition and nutritional value of Kochia prostrata feed in the arid zone of Western Kazakhstan
Published 2023-10-01“…The study aimed to determine the influence of soil and climatic conditions on the alteration in the chemical composition and nutritional value of fruit and fodder products, hay, and straw of the forage kochia. …”
Get full text
Article -
403
-
404
Research on the dynamic pressure influence and support engineering strategy of roadway group under multi section collaborative mining conditions
Published 2025-06-01“…Research has shown that: (1) for multi section collaborative mining engineering conditions, a reasonable design of interlayer distance is the key to the surrounding rock stability of the dynamic pressure roadway group, which can reduce the dynamic pressure impact of each middle section roadway on each other, while meeting the mining technology level and efficiency requirements of the ore body; (2) the end of the ore vein mining roadway near the ore room is a key support reinforcement area, which increases the risk of instability of the surrounding rock due to strong mining induced pressure; the secondary support and reinforcement area is the intersection of the ore vein mining roadway and external roadway, as well as the roof of the ore vein external roadway and the side walls near the ore room, which are affected by the risk of shallow loose body collapse; (3) The layout of the roadway group causes uneven disturbance of the surrounding rock stress environment, changes the stable bearing state, and thus intensifies the damage; The mining of the ore room causes the surrounding stress field to be relieved, and the stress imbalance and disturbance of the roadway surrounding rock are more obvious, leading to an increase in the hidden danger of failure and instability; (4) A joint support scheme for dynamic pressure roadway group was proposed (active support with “anchor rod + steel mesh + surface spraying” during the layout stage of the roadway group + passive reinforcement support with “steel arch + metal mesh + surface spraying” during the ore drawing stage), and the on-site support effect was safe and stable.…”
Get full text
Article -
405
-
406
-
407
-
408
-
409
-
410
-
411
-
412
-
413
-
414
-
415
-
416
Study on the law of air leakage in goaf under the influence of double-series coal seam mining
Published 2025-01-01“…In order to solve the engineering problem of a large amount of wind leakage in the 8106 comprehensive mining working face of the Carboniferous System under the influence of overlapping mining of two coal seams in Yongdingzhuang Mine, Datong Mining Area, this paper utilizes finite element numerical simulation software to study the wind leakage characteristics of the 8106 working face and the distribution range of the spontaneous combustion “three zones” of the mining area. …”
Get full text
Article -
417
-
418
Friction Prediction in Asphalt Pavements: The Role of Separated Macro- and Micro-Texture Parameters Under Dry and Wet Conditions
Published 2025-03-01“…This study examines the relationship between separated pavement textures and friction coefficients under dry and wet conditions. Using 3D laser scanning, texture data were collected from 40 asphalt pavement sections in Nanchang. …”
Get full text
Article -
419
-
420
Phosphorus transport process and driving mechanism in the sediment of farm ponds in small watersheds of three Gorges Reservoir area
Published 2024-12-01“…Furthermore, factors including pH and water depth influenced the release rates; acidic conditions promoted phosphorus release from the substrate more effectively than alkaline conditions. …”
Get full text
Article