ugg boots deutschland CD21-type excavator _2749

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CD21-type excavator

Upper and lower mouth are left more than rope; so, once the block hole, pulling the rope up and down, you can clear the drain holes to ensure the face normal drainage. (4) Strengthening construction management. Well to help the longer the exposure, the more difficult support; therefore temporary support to do well, to ensure construction safety. Temporary Support Anchor + Manhole way back. Serious caving rock fragmentation, should be ahead of the wedge support piling. (5) wall after grouting. When pouring the old air shaft section shall be embedded grouting pipe, grouting the wall to cut off the water inflow channel, to prevent the wall appears watering. 6 results and experience of the construction program as a reasonable construction, security technology and appropriate measures and secure a smooth bore through the old blank area. Through practice, have the following experience. (1) According to the production of the mine characteristics of the early construction of underground tunnels to the well below the simple position, and then playing through scuppers under the Inoue is conducive to drainage; while dewatering ahead of the old sandstone aquifer and the water cavity, and export coal in the gob area and harmful gases, as the wellbore area by the old air to create favorable conditions for construction. (2) close to the old air shaft heading face area,[link widoczny dla zalogowanych], playing ahead of exploration drilling to identify goaf caving zone and the old empty area water, harmful gas occurrence conditions for the construction program to provide a reliable basis for the development. (3) the use of mechanized equipment construction, speed up the construction speed; the same time using the method of piling wedge advance support, bolt, mesh and Manhole back for temporary support, in order to secure a smooth bore through the air district has provided a guarantee the old . About Ding Yajun (1971), male, Jiangsu Lianshui,[link widoczny dla zalogowanych], engineers, national registered safety engineer, registered engineer evaluation. July 1999 graduated from the Anhui University of mine construction professionals, the current Institute of Zibo Mining Group, director of the mine, has been engaged in mine design, mine construction and management of construction technology. (Continued from page 17) (1) under certain conditions, extended use of anti-dig deep shaft process, addresses the construction of the shaft upgrade with transport problems. (2) Anti-shaft of the tunnel was well and old, to take place a small gun, put gun shock measures, can reduce the destruction of the old auxiliary shaft bottom; while digging in the expansion, anti-blast well as provide a free surface,[link widoczny dla zalogowanych], but also reduce the blast damage to the old auxiliary shaft bottom. (3) Crane June coal mining company considering the construction site conditions, a flexible extension of the use of anti-deep borehole well construction technology, is a successful practice. About Luhong Xi (1973), male, Henan Mall in Reading Master of Engineering, engineers, national registered safety engineer. July 1996 graduated from Henan University of Technology,[link widoczny dla zalogowanych], has been engaged in coal mining technology and safety management of construction, the company currently Hebi Coal Mining Technology Section VI. 1O of Henan Province on the focus of monitoring to determine the effective prevention of major coal mine gas accident, Henan Province Coal Authority on the part of a recent \10 on mine within the mining face and 8 focus on monitoring the implementation. Mine is the key monitoring 1o: Pingdingshan Coal Group mine ten, thirteen mines, four mines Ping Yu Gas and Electric Company, meaning Yuejin Coal Mine, Mine Yongmei Group Xinlong company public, Feng Ying Coal Coking Coal Group, Crane Coal Group in the Thai company, Zhengzhou City, tread groove Dengcao Mine Group, the local coal mining company Anlin, Anyang He bent mine. 8 focus on monitoring the extractive side is: Yi Xin Coal Mine 14,151 coal face, Cheng Coal mining face Gaocheng 21,021, 25,041 cranes Coal Group coal face in the Thai company, Pingdingshan Mining Group has a second roadway face of a 31010 machine, has-s31010 wind roadway face, never the main focus Coal Mine 2l131 Xinlong mining companies face, Industry and Trade Company, Zhengzhou City, Guang Xian Mine 22011 Blasting Face Xinfeng, Anyang City He bent Mine Blasting Face 11091. (CCB) CD21-type mini excavator \boulder. CD21-type excavator crawler excavator than some have a greater explosive force; its supporting 9hp engines and fuel tanks 50.8ram diameter, excavated to provide additional power. The excavator quality 544kg, easy to transport. CD21-type excavator can also use the 203mm wide trenching bucket,[link widoczny dla zalogowanych], or bucket 508mm wide flat roadbed. It is also available ripsaw accessories, can be used to dig frozen ground or hard soil. Accessories boxes are also available for easy field maintenance. (Light ning) ***
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