نتایج جستجو برای: rock sawing process

تعداد نتایج: 1347184  

2012
Peter K. Kaiser Ming Cai

As mining and civil tunneling progresses to depth, excavation-induced seismicity and rockburst problems increase and cannot be prevented. As an important line of defense, ground control measures and burst-resistant rock support are used to prevent or minimize damage to excavations and thus to enhance workplace safety. Rock support in burst-prone ground differs from conventional rock support whe...

2009

Rotary drilling belongs to the key methods of rock separation not only in mining, but also in wider areas of geotechnologies 1, 2 . The most efficient separation of rocks is in so-called volume area which can be achieved with the correct choice of work tool and work mode while taking into account the geomechanical properties of rock separation. Theoretical research of rock separation by rotary ...

Journal: :Machines 2022

The paper deals with the development of a dimensional rock sawing machine to optimize production small-volume stone products in limestone quarries by re-thinking use and transport equipment. A low-volume mining transportation adapter be developed for both can reduce number machines used mine. After cutting around block stone, material moved help machine. Cutting tests were performed determine w...

1998
Luis G. Occeña Daniel L. Schmoldt

The planning of how hardwood logs can be sawn to improve recovery of high-value lumber has always been hampered by the limited information provided by external defects, and whatever internal defects are eventually revealed on the cut log faces by the sawing pattern. With expanded markets, lower-quality logs, increased competition from non-wood products, social pressures to manage public lands f...

2005
Weigang DUAN Shanzhi WANG Min CHEN Cuifen WANG Luyong ZHANG Jun LIU Lixin SUN

protein serine/threonine kinase (ROCK), is one of the central regulatory molecules for cytoskeleton control and cell adhesion process. ROCK also involves in other cell functions such as apoptosis and tumor invasiveness. Rho kinase is thought to play an important role in a variety of cellar functions such as stress fiber formation, focal adhesion formation, cell aggregation, cell morphology, cyt...

Journal: :IFAC-PapersOnLine 2021

The Canadian wood industry use sawing simulators to digitally break a log into basket of lumbers. However, those tend be computationally intensive. In some cases, this renders them impractical as decision support tools. Such case is the problem dispatching large volume several sawmills in order maximise total yield dollars. Fast machine learning metamodels were recently proposed address issue. ...

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