Showing 161 - 180 results of 241 for search '"limestone"', query time: 0.04s Refine Results
  1. 161

    Prediction Method for the Ground Vibration Damage Boundary of Thick and Hard Rock Layer Fracture Type Mine Quakes by Ming Zhang, Xuelong Hu, Min Tu, Yong Yue, Qingwei Bu

    Published 2022-01-01
    “…Finally, the results are used to predict the ground vibration damage boundary of limestone primary fracture in the longwall 16101 face of the Fuping Coal Mine.…”
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  2. 162
  3. 163

    Classification and identification of karstic aquifers in the OSHTORANKUH region by Tayebeh KIANI, mohamad Fatholahzadeh

    Published 2019-03-01
    “…The karst areas refers to individual areas that shaped by the dissolution of bedrock and subsurface drainage grid development and are connected mainly with limestone. The karstic formations outcrop 20 percent of the land surface of the planet is covered that 11 percent of Iran are part of this 20% is included. …”
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  4. 164

    The Role of Various Powders during the Hydration Process of Cement-Based Materials by Shuhua Liu, Hongling Wang, Jianpeng Wei

    Published 2017-01-01
    “…The role of various powders including glass powder (GP), limestone powder (LP), and steel slag powder (SSP) during the hydration process of cement-based materials was investigated by using X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG-DTA), scanning electron microscopy (SEM), and strength tests. …”
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  5. 165

    Mechanical Behavior of Cracked Rock in Cold Region Subjected to Step Cyclic Loading by Liang Zhang, Fujun Niu, Minghao Liu, Jing Luo, Xin Ju

    Published 2022-01-01
    “…The test results show that limestone has obvious strengthening effect under cyclic loading due to local crushing and filling of internal structural plane. …”
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  6. 166

    Deformation Analysis of Reinforced Retaining Wall Using Separate Finite Element by Xingli Jia, Jinliang Xu, Yuhai Sun

    Published 2018-01-01
    “…Taking the modulus of foundation soil as the influencing factor of the foundation soil, taking the geogrid stiffness, length, and spacing as the influencing factors of geogrids, and taking the filling type of limestone, fly ash, and silty clay as the influencing factors of backfill in the wall, the horizontal and vertical deformations of reinforced retaining wall under different factors using the methods of controlling a single variable analysis are calculated. …”
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  7. 167

    Research on Coal and Rock Type Recognition Based on Mechanical Vision by Qiang Zhang, Jieying Gu, Junming Liu

    Published 2021-01-01
    “…The results show the following: (1) in the eight kinds of rocks, the recognition accuracy of shale and limestone is 90%, that of anorthosite is 95%, and those of other rocks are 100%; (2) the accuracy of comprehensive identification of coal, rock, and gangue is 93%, the comprehensive of coal and gangue is 78%, and the rock classification is 97%; (3) the identification time of 6 types of coal samples, 8 types of rock samples, and 2 types of coal gangue samples are in the range of 2 s∼3 s, which is far less than 10 s, which can meet the requirements of coal and rock identification in terms of recognition speed; and (4) according to 20 groups of data, the range, variance, and standard deviation of the same coal gangue sample meet the accuracy requirements of coal and rock identification. …”
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  8. 168

    Rheological Characterization of Warm-Modified Asphalt Mastics Containing Electric Arc Furnace Steel Slags by M. Pasetto, A. Baliello, G. Giacomello, E. Pasquini

    Published 2016-01-01
    “…To evaluate the influence of both warm additive and steel slag, a plain binder and limestone filler were also used for comparison purposes. …”
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  9. 169

    Investigation of Multiple Hole Grouting for Reducing Water Inrush Risk in Underground Engineering by Changde Yang, Ling Li, Ying Li, Yakuan Gao

    Published 2021-01-01
    “…The method was applied in a case study in a coalmine in Henan province, China, in which the risk of the water inrush from karst aquifers has been reduced by grouting. There are three limestone aquifers, namely, L8, L10, and L11 which underlie an exploitable coal seam. …”
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  10. 170

    Venüs Heykelciklerinden İdollere Kadın Temsilleri by Tülin CENGİZ

    Published 2021-12-01
    “…The most famous one of them is the Willendorf Venus that was made of limestone. There are also samples of Venus figurines with hair and facial details, as well as the ones which generally do not have any hair and facial details. …”
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  11. 171

    Enhancing performance of recycled aggregate concrete with supplementary cementitious materials by Abba Fatiha, Ezziane Karim, Adjoudj Mhamed, Abed Farid

    Published 2025-03-01
    “…In a concrete based on RCA aggregates, ordinary cement was replaced with 20% natural pozzolan (NP), 10% limestone powder (LP), 20% ground granulated blast furnace slag (GGBFS) or 10% fumed silica (SF). …”
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  12. 172

    Photoelectric Factor Characterization of a Mixed Carbonate and Siliciclastic System Using Machine-Learning Methods: Pennsylvanian Canyon and Strawn Reef Systems, Midland Basin, Wes... by Osareni C. Ogiesoba, Fritz C. Palacios

    Published 2024-12-01
    “…However, there are some porous shale beds within the reef complex that are indistinguishable from the porous limestone zones on the neutron porosity log that have posed major challenges to hydrocarbon production. …”
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  13. 173

    Techniques for Suppressing Mineral Dust Aerosol from Raw Material Stockpiles and Open Pit Mines: A Review by Hsin-Chieh Kung, Wan-Ching Lin, Bo-Wun Huang, Justus Kavita Mutuku, Guo-Ping Chang-Chien

    Published 2023-12-01
    “…In conventional stockpiles, the tendency to produce mineral dust is higher in coal and coke than in other material aggregates such as limestone, gypsum, iron ore, magnetite, and bauxite. …”
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  14. 174

    Research on a Numerical Simulation and Prediction Model of Floor Mining Failure Depth in the Chenghe Mining Area by Ang Li, Qian Mu, Wenzhong Zhang, Chaoyang Liu, Feng Wang, Lin Mou

    Published 2020-01-01
    “…Ordovician limestone water on the floor is a serious threat to the safety of coal mine production in the Weibei coalfield, and prediction of the floor failure depth is the key for evaluating the mining conditions under pressure. …”
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  15. 175

    Light Hydrocarbon Geochemistry: Insight into Mississippian Crude Oil Sources from the Anadarko Basin, Oklahoma, USA by Ibrahim Atwah, Stephen Sweet, John Pantano, Anthony Knap

    Published 2019-01-01
    “…The Mississippian limestone is a prolific hydrocarbon play in the northern region of Oklahoma and the southern part of Kansas. …”
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  16. 176

    Enhancing safety in surface mine blasting operations with IoT based ground vibration monitoring and prediction system integrated with machine learning by Mangalpady Aruna, Harsha Vardhan, Abhishek Kumar Tripathi, Satyajeet Parida, N. V. Raja Sekhar Reddy, Krishna Moorthy Sivalingam, Li Yingqiu, P. V. Elumalai

    Published 2025-02-01
    “…This study introduces an IoT-based ground vibration monitoring device specifically designed for limestone mining operations, combined with machine learning algorithms to predict ground vibration intensity. …”
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  17. 177
  18. 178

    Micro-characterization of Dust and Materials of Dust Origin at a Cement Industry Located in Bangladesh by Zerin Binte Alam, Kazi A. B. M. Mohiuddin

    Published 2022-10-01
    “…All the materials that could potentially be the sources of the dust of the CI were collected, including clinker, gypsum, limestone, fly ash, slag, and two types of cement products. …”
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  19. 179

    Effect of Indenter Angle on Bearing Performance of Coal and Accompanying Rocks Under Point Load and Characterization of Mechanical Parameters by Qian Wang, Yujiang Zhang, Delong Cui, Guorui Feng, Yunlou Du, Shuai Zhang, Haojie Cheng, Zhengjun Zhang

    Published 2025-01-01
    “…ABSTRACT Coal, mudstone, sandstone, and limestone, which are common in coal mines, were selected as research objects, and 60°, 90°, and 120° indenters were used to conduct point load tests to study the deformation and failure laws of rocks under point loads. …”
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  20. 180

    A New Evaluation Method for Water Blocking Performance of Coal Seam Floor: Model Construction, Case Application, and Water-Preserved Strategy by Baobin Gao, Chuangnan Ren, Shaopeng Song

    Published 2022-01-01
    “…Furthermore, an optimized strategy for coal seam floor water retention mining is proposed: the technology system of water-preserved mining for coal seam floor contains 3 stages and 3 detections, which provides a scientific basis for the in situ protection of high-pressure limestone water from coal seam floor.…”
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