uggs kopen Artificial ice situation and trend of c

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Artificial ice situation and trend of construction methods

Freeze the hole to strengthen the measurement of work to ensure that the deflection rate freeze holes as small as possible to optimize frozen blasting parameters, the use of controlled blasting. Adhere to the normal cycle of operation,[link widoczny dla zalogowanych], a blow for full cross-section, sum up experience and improve the efficiency of frozen permafrost blasting method mechanized mining method,[link widoczny dla zalogowanych], operational safety, high efficiency, low labor intensity, but it only applies to very hard freeze soil, should be strengthened Rock Drilling with Cutters, improve their quality of life and strength, but if off, will not result in mechanical properties of the original play, the construction of fault-prone, difficult to maintain,[link widoczny dla zalogowanych], influence the actual progress of the three frozen shaft construction trends in drilling and blasting method is a method of limitation and the construction method of high efficiency, than the mechanical rock breaking method, low energy consumption, three 374 I7 frozen ice JII one volume, flexibility,[link widoczny dla zalogowanych], cross section dimension and shape is not limited to adapt to various soil conditions, supporting small amount of work. But there are also processes discontinuous, drilling, charging, and refuse dumping intermittent operation cycle of the inherent efficiency and lower overall driving speed, machines do not match, burst area unsafe, blow molding and less poor, and over-excavation digging phenomenon Therefore, the response to this particular medium frozen blasting mechanism, blasting parameters, such as drilling equipment to study and solve technical problems. Mechanized mining is the most important feature of security, accuracy, process continuity, little damage to the surrounding rock and the advantages of low labor intensity, problem is the poor adaptability, and are subject to the restrictions section of the wellbore. According to drilling and blasting method and the characteristics of mechanized mining method and field practice has shown that the recent construction methods permafrost drilling and blasting method for the drilling and blasting method currently used, although some instances of frozen soil excavation, but the laws have not yet mastered, should be further studied drilling machinery and blasting, drilling and blasting method permafrost prospects are bright. Mechanized mining methods should strengthen high-quality, high-strength materials research, material constraints, it will not affect the mechanical mining methods of development, should be developed for different strength of frozen soil under the serialization and standardization of the broken tools, should be organized departments to improve existing equipment to meet the high efficiency of the security permafrost excavation. Therefore, the future should continue to improve and develop the permafrost drilling and blasting method, and vigorously developed and mechanized mining methods to further improve the extensive fragmentation of cold E explore new ways to improve the construction speed of frozen soil and reduce costs thanks: In this paper, writing See a lot of information process, the author of this thanks to the data.
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