岩石破碎学
钻井岩石破碎学 - 科学文库
钻井岩石破碎学. 本书针对深部硬地层钻头破岩效率低和钻井成本高的问题，以典型硬脆性花岗岩为研究对象，通过理论分析、计算机数值模拟与室内实验相结合的方法系统研究了非均质花岗岩在钻齿作用下的宏细观破碎
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岩石破碎学(第一讲) - 百度文库
岩石破碎学(第一讲)-σi P APa图 1.1－14 岩石单轴抗压试验1－岩样；2－球座；3－钢垫板图 1.1－15 岩石单轴拉伸试验1－岩样；2－夹头；图中尺寸单位：cmN图1.1－16 圆盘劈裂
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岩石破碎方法的研究现状及展望 - 百度学术
摘要：. 综述了机械破岩 (冲击破岩,切削破岩和冲击-切削破岩)和非机械破岩 (水力破岩,热-机碎岩,贯通锥形断裂破岩,激光破岩,微波破岩,等离子破岩和电子束破岩)两种岩石破碎方法
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冲击作用下岩石破碎的动力学特性及能耗特征研究
为了研究冲击钻井中岩石破碎的难易程度及动态破碎规律,基于固有缺陷的损伤原理,建立了岩石动态破裂强度、破碎时间和破碎能耗的理论模型,通过砂岩的霍普金森压杆冲击压缩试
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岩石破碎学 - las.ac.cn
岩石破碎学. 出版社：煤炭工业出版社. 出版/：1984. 作者：徐小荷. 学科：矿业工程,地球科学. 资源类型：图书. 细分类型：中文文献. 收藏单位. 馆藏地.
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岩石破碎_百度百科
岩石破碎是采掘作业中使部分岩体脱离母体并破碎成岩块的工艺和理论。有爆炸破碎、机械破碎、水射流破碎和热力破碎等四种。研究岩石破碎的主要任务是：揭示破碎岩石的能耗和破碎效果间的联系，探求破碎载荷和岩
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Kỹ thuật địa chất - Cổng thông tin học bổng Du học ...
Khi tham gia theo học ngành này, sinh viên sẽ được đào tạo thông qua những học phần sau: Kỹ thuật địa chất, Toán cao cấp, Ngoại ngữ đại học, Vật lý đại học, Hóa học đại học, Vẽ kỹ thuật, Công nghệ thông tin máy
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"Analysis on working characteristics of cam-roller impact
Rotary percussion drilling tools can effectively improve their rock breaking efficiency in the deep and hard strata, thus having broad application prospects. The cam-roller is the key mechanism to realize the impact action, but the complex and changeable downhole environment leads to serious damage to the mechanism, which in turn affects the
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Reference method for determining sample size in
2013/9/15 According to the transmission-reflection laws of stress waves in elastic bar and rock sample in rock SHPB tests, a look-up table to obtain the relative stress difference value was given using the ...
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Theoretical research on the ploughing rock breaking properties of
The researches on the conical PDC cutter are now focused on numerical simulation, field and laboratory tests, the theoretical analysis on its mechanical properties has not been reported. Therefore, the tensile shear rock breaking mechanism and cutting load distribution characteristics of the conical PDC cutter are described by numerical simulation, the
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Experimental simulation of impact response identification on
Experimental simulation of impact response identification on circular hole cavern rock mass: TAN Zhuoying，WU Bin，XIA Zhiyuan，DING Yu，QI Kuan，LI Wen，YUE Pengjun
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Development of YXW-2000 hydromill
In view of much time consumption and high risk in pile hole construction for signal tower foundations by the manual water grinding drill combined with air pick in mountainous areas in China， the market is in urgent need of a kind of equipment which can reduce the labor intensity， has high safety factor and fast cutting speed， and is portable and modular.
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Study of rock-breaking mechanism under single-tooth impact
2015/6/10 To improve the efficiency of the rotary-percussive drilling, it is necessary to understand the rock-breaking mechanism under tooth impact. Current research efforts in this regard are mainly ...
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Research on permeability and acoustic emission characteristics of
Cite this article: LIU Weitao1,DU Yanhui1,YU Shijian1, et al. Research on permeability and acoustic emission characteristics of karst collapsed column skeleton sandstone under triaxial compression[J]. , 2021, 40(8): 1580-1590.
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Prediction model for TBM disc cutter wear based on dense core
2022/5/1 Most scholars used a large amount of actual construction data and cutter wear data to fit data from the perspective of force. Yang et al. [6] and She et al. [7] believed that abrasive wear is the ...
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岩石破碎相关文献
Products. AS a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete stone crushing plant.
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Effect of impulse and bedding on impact toughness of coal
2008/12/1 However, studies of the relationship between the bedding structure and permeability are presently scattered. Huang (2012) took into account the effect of the structural anisotropy on coal Yu et al ...
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CN1306143C - 一种柱面承载管式钎杆 - Google Patents
CN1306143C CNB2003101038898A CN200310103889A CN1306143C CN 1306143 C CN1306143 C CN 1306143C CN B2003101038898 A CNB2003101038898 A CN B2003101038898A CN 200310103889 A CN200310103889 A CN 200310103889A CN 1306143 C CN1306143 C CN 1306143C Authority CN China Prior art keywords drill
获取价格A New Train of Thought for Defining Size of Making Pit From Steel
On the basis of a test, this paper first advances the theory about making pit on rock from steel tooth in the form of a flat bottom cylinder through static pressure, and obtains the formula for calculating pit size.Result shows that it is uniform with the fact
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岩石破碎相关文献
Products. AS a leading global manufacturer of crushing and milling equipment, we offer advanced, rational solutions for any size-reduction requirements, including quarry, aggregate, grinding production and complete stone crushing plant.
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Effect of impulse and bedding on impact toughness of coal
2008/12/1 However, studies of the relationship between the bedding structure and permeability are presently scattered. Huang (2012) took into account the effect of the structural anisotropy on coal Yu et al ...
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CN1306143C - 一种柱面承载管式钎杆 - Google Patents
CN1306143C CNB2003101038898A CN200310103889A CN1306143C CN 1306143 C CN1306143 C CN 1306143C CN B2003101038898 A CNB2003101038898 A CN B2003101038898A CN 200310103889 A CN200310103889 A CN 200310103889A CN 1306143 C CN1306143 C CN 1306143C Authority CN China Prior art keywords drill
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A New Train of Thought for Defining Size of Making Pit From Steel
On the basis of a test, this paper first advances the theory about making pit on rock from steel tooth in the form of a flat bottom cylinder through static pressure, and obtains the formula for calculating pit size.Result shows that it is uniform with the fact
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Study on cross-scale fractal law of disintegration and failure of
Cite this article: LIU Yuedong1,2,KANG Hongpu1, et al. Study on cross-scale fractal law of disintegration and failure of water-bearing mudstone under different stress paths[J]. , 2023, 42(S2): 4162-4173.
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Strength analysis of FGQ-600 type DTH hammer drill bit used for
The DTH hammer drill bit used for casing while drilling is the main tool of rock breaking and it is one of the important components of air reverse circulation drilling tools. It is widely used in geological hazard control projects. During the drilling process， the drill bit is subjected to alternating impact load， which is prone to stress concentration and fatigue failure.
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Development and Pilot Test of Hydro-Oscillator
In order to solve the problem of high friction and backing pressure in the process of horizontal well drilling,and improve the efficiency of horizontal well drilling,the hydro-oscillator was developmented.Based on the theory of mechanical vibration,downhole equipment would transfer static friction into kinetic friction between the drilling tools and borehole wall
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Strength analysis of FGQ-600 type DTH hammer drill bit used for
The DTH hammer drill bit used for casing while drilling is the main tool of rock breaking and it is one of the important components of air reverse circulation drilling tools. It is widely used in geological hazard control projects. During the drilling process， the drill bit is subjected to alternating impact load， which is prone to stress concentration and fatigue failure.
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徐小荷，余静编著: search on Z-Library
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CN113111497B - 一种基于岩碴粒径分布规律的tbm破岩效率评价
CN113111497B CN202110320352.5A CN202110320352A CN113111497B CN 113111497 B CN113111497 B CN 113111497B CN 202110320352 A CN202110320352 A CN 202110320352A CN 113111497 B CN113111497 B CN 113111497B Authority CN China Prior art keywords rock particle size tbm fragments surface area Prior art date 2021-03
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Development Trend and Application of Star Soil Sampler Impact
2019/7/1 With the development of global space technology, technologies of planet soil detection, sampler and return will become more and more important in the field of deep space exploration in the future. The space environment detection and sampling tasks in deep space exploration have the characteristics of high vacuum, low gravity, intense
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