A New Linear Cutting Experimental Machine for Disc-Cutter Rock
Aiming at the low rock-breaking efficiency of TBM disc cutters in tough rock environments, A new experimental machine combined with the high-pressure Using a linear elastic constitutive model and a Drucker- Prager plastic model, this paper defines the material properties of broken coal rock, simulates the breaking mode and Rock-Breaking Performance of Cutters of Tunnel Boring Machine
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A novel concept for a rock-breaking machine I. Theoretical
This part introduces the basic ideas and early work, and then gives the theory of the rock-breaking process, which is based A novel concept for a rock-breaking machine I. Tests with the largest machine confirmed its ability to deal with rock at full scale, whether hard, soft, or badly fissured, and suggest the possibility of making a variety of very A novel concept for a rock-breaking machine. II. Excavation
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TBM-cutter rock-breaking effect and mechanism
Abstract. For a tunnel boring machine (TBM), the cutter rock-breaking effect and mechanism are key components of the machine design and construction. Based on the study and analysis of the rock-breaking mechanism of the TBM disc cutter, the dynamic response mechanism of rock mass under the action of Dynamic Rock-Breaking Process of TBM Disc Cutters and
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Frontiers Study on rock-breaking efficiency evaluation of TBM
As the main cutting tool of Tunnel Boring Machine (TBM) for rock-breaking, the rock-breaking efficiency of TBM disc cutters directly affects the TBM’s Study on Optimum Free-face Condition of Cutting Hard Rock with Tunnel Boring Machine Hob. To explore the rock-breaking characteristics of cutting hard rock Investigation of rock breaking mechanism with TBM hob under
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Energies Free Full-Text Ultrasonic-Assisted Rock
High-efficiency rock-breaking is a problem that has long been studied in the oil- and gas-drilling industry. The successful use of ultrasonic technology in related fields has prompted us to study how to This paper aims to design a suitable method to analyze the relationship between the rock-breaking performance and tunneling performance of the cutters of tunnel boring machine (TBM). Considering the cutting discontinuity in broken coal rock formation, the authors put forward a simulation method for the rock-breaking performance of TBM Rock-Breaking Performance of Cutters of Tunnel Boring Machine
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rock breaking 英中 Linguee词典
大量翻译例句关于"rock breaking" 英中词典以及8 翻译器. Translate texts with the world's best machine translation technology, developed by the creators of Linguee.China Rock Breaking manufacturers Select 2023 high quality Rock Breaking products in best price from certified Chinese Wire Mesh, Polished Tile suppliers, wholesalers and factory on Made-in-ChinaRock Breaking Made-in-China
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The rock breaking and ROP increase mechanisms for single-tooth
Torsional impact drilling is a new technology which has the advantages of high rock-breaking efficiency and a high rate of penetration (ROP). So far, there is no in-depth understanding of the rock-breaking mechanism for the ROP increase from torsional impact tools. Therefore, it has practical engineering significance to study the rock Tunnel Boring Machine (TBM) is widely used in the excavation of water conveyance, subway, railway tunnels and deep roadways all over the world due to its high efficiency and safety (Adoko et al., 2017, Fan et al., 2016, Frough and Torabi, 2013, Gong et al., 2012, Guo et al., 2022, Kahraman, 2002, Repetto and Fidelibus, 2017).An Optimum spacing and rock breaking efficiency of TBM double
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A novel concept for a rock-breaking machine I. Theoretical
This part introduces the basic ideas and early work, and then gives the theory of the rock-breaking process, which is based upon the use of fracture mechanics. The theoretical predictions obtained from the analysis are then compared with results obtained from a scale model breaker (6.7 mm diameter hole) working in PMMA.The conventional blasting rock excavation method is the main means of rock breakage because of its high productivity, and it is relatively inexpensive compared to other methods. However, it raises safety concerns and can negatively impact the environment. The major disturbances that may be induced by this method include flyrock, gas emissions, and A review of some nonexplosive alternative methods to conventional rock
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Resilient Rock Breaking Machine For Power Outputs Alibaba
Ballast Crusher Rock Crushing Breaking Stone Jaw Crusher Machine Price In India For Sale. $8,500.00 $12,000.00. Min. Order: 1 set. 20 yrs CN Supplier. 0.0.FIG. 1 shows a fragment of the jib or angularly movable arm of an excavating machine provided at its forward end with an impact tool suitable for rock breaking or similar operations, FIG. 2 is a sectional side elevation on the line II--II of FIG. 3 of the mounting arrangement for the impact tool, FIG. 3 is a rear elevation of the mountingRock breaking machine DOBSON PARK INDUSTRIES LIMITED
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Investigation of rock breaking mechanism with TBM hob under
DOI: 10.1016/j.engfracmech.2020.107432 Corpus ID: 229434652; Investigation of rock breaking mechanism with TBM hob under traditional and free-face condition @article{Zhang2021InvestigationOR, title={Investigation of rock breaking mechanism with TBM hob under traditional and free-face condition}, author={Xuhui As the main cutting tool of Tunnel Boring Machine (TBM) for rock-breaking, the rock-breaking efficiency of TBM disc cutters directly affects the TBM’s boring speed, which in turn affects the overall progress Frontiers Study on rock-breaking efficiency
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A novel concept for a rock-breaking machine. II. Excavation
In concrete-breaking, no problems were encountered in breaking the concrete itself but, if present in a three-dimensional array, the reinforcing bars could cause trouble. Tests with the largest machine confirmed its ability to deal with rock at full scale, whether hard, soft, or badly fissured, and suggest the possibility of making a variety of very flexible and In order to improve the rock breaking efficiency of hard rock tunnel boring, many innovative rock breaking methods have been proposed (e.g., the water jet cutting, the high-power laser cutting, the impact-rotary drilling, and the undercutting method). However, most of the methods are not applicable to TBMs due to some structural Free-face-Assisted Rock Breaking Method Based on the Multi
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Rock drilling rig and rock breaking machine TON Tamrock Oy
The rock drilling rig shown in FIG. 1 comprises a movable carrier 1, a boom 2 arranged movable in relation to the carrier, and a feeding beam 3 arranged to the free end of the boom. In some cases, the feeding beam 3 can be arranged directly on the carrier 1. A rock drilling apparatus 4 can be moved in relation to the feeding beam 3 by means ofThe Breakdown on Rock Breaking Rock breakers are widely used tools used in the mining, construction, and landscaping industries. Rock breakers are a common alternative to explosive devices sometimes used to clear rock. Construction crews often prefer rock breakers as they provide more precision and less unpredictability than other methods. Rock Breaker 101 Rasmussen Equipment
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A New Linear Cutting Experimental Machine for Disc-Cutter Rock Breaking
Aiming at the low rock-breaking efficiency of TBM disc cutters in tough rock environments, A new experimental machine combined with the high-pressure water jet rock-breaking method was designed. It can flexibly change the cutting parameters of the water jet, such as spray position, spray height, pressure, etc. Moreover, the three During tunnel boring machine (TBM) construction, the rock breaking effect of the disc cutter in complex formations affects the progress and cost of the entire project. Therefore, it is necessary to better understand the rock breaking mechanism of TBM in complex formations. In this study, matrix discrete element method (MatDEM) Numerical simulation of rock breaking by TBM disc cutter in soil-rock
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Google Traductor
El servicio de Google, que se ofrece sin costo, traduce al instante palabras, frases y páginas web del inglés a más de 100 idiomas.Breaking of Wire Rope for Drilling Pipe Lifting Zhong-Hai ZHANG 1,a,Jie ZHANG 2,Ji-Guang ZHANG 2,Yu SUN 2,Yao-Zhong CUI 3,Cheng-Kun LI 3,Li-Juan DONG 3,Wen-Guang JIANG 3,bTransient Analysis of Rotary Drilling Rig in Response to Sudden
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