China railway construction heavy industry successf

China railway construction heavy industry successfully rolled out the first domestic minimum diameter open hard rock tunnel boring machine

China railway construction heavy industry successfully rolled out the first domestic minimum diameter open hard rock tunnel boring machine

China Construction machinery information

on January 14, China railway construction heavy industry group successfully rolled out the first domestic minimum diameter open hard rock tunnel boring machine (TBM) in Changsha, Hunan Province. Avoid printing wear

hard rock tunnel boring machine (TBM) integrates multi-disciplinary cutting-edge technologies such as "mechanical, electrical, hydraulic" and continues to excavate rock layers with the help of rotating cutter head to realize the "one-stop" operation of rapid excavation, mucking and support of hard rock layers. It has the characteristics of safety, speed and environmental protection, so it has become a sharp tool for tunnel construction and is widely used in highway and railway from Latin America to Asia Pacific, urban subway Water conservancy and hydropower, municipal pipe gallery and other engineering construction

it is understood that this open hard rock tunnel boring machine (TBM) with independent intellectual property rights, with an excavation diameter of 4 meters, a length of 290 meters, a weight of about 750 tons, and a total installed power of about 2400 kW, will be used for the construction of water resources allocation projects in Northern Hubei Province with a total investment of 18.05 billion yuan and a total length of 270 thousand water transmission lines, including servo valves, digital valves, proportional valves, etc. The geological conditions of the project are complex, the tunnel space is narrow and small, the manual drilling and blasting operation is difficult, and the ventilation and material transportation are difficult. The TBM of "Baolin in North Hubei" customized by China railway construction heavy industry group for the project plans to excavate 10.56 kilometers. According to Cheng Yongliang, general manager of CRCC heavy industry group, this open TBM has technically overcome the problems of "small diameter TBM system integration", "personnel logistics channel layout", "ventilation and dust removal pipeline layout" and "small diameter cutter head combined cutter box design". It has the characteristics of fast hole forming speed, high quality, safety and environmental protection, and fully meets the requirements of the project. This is also the first time that the minimum diameter open TBM is used in tunnel construction in China

the successful offline of the first domestic minimum diameter open hard rock tunnel boring machine (TBM) marks the complete upgrading of the independent innovation ability of China's high-end underground equipment manufacturing, greatly expands the application of TBM in China's engineering field, especially in water conservancy engineering construction, and improves the overall competitiveness of "made in China"

it is reported that CRCC heavy industry, as the provider of the overall scheme of tunnel construction equipment in the world, has the tunnel equipment manufacturing base with the largest variety of products, the strongest production capacity and the largest floor area in the world. In recent years, CRCC heavy industry has always focused on the positioning of non-standard, special, customized and personalized high-end underground equipment products, created three industrial sectors of "roadheader, special equipment and track equipment", and developed rapidly with an annual growth rate of more than 30%, creating an industry miracle of developing a new product or a new achievement every week. At present, China railway construction heavy industry has built high-end underground equipment manufacturing bases in Changsha, Zhuzhou, Longchang, Lanzhou, Urumqi and other places. With the mastery of core technology and strong research and development strength, China railway construction heavy industry is striding on the great journey of building a manufacturing power with the majestic posture of China's leader in high-end underground equipment manufacturing. (this article is from yumingjun, huangxinglin, publicity and brand Department of railway construction heavy industry)