Atlas Copco boomer353e rock drilling platform

Atlas Copco Boomer 353E rock drilling jumbo assists Jinping Hydropower Station Project

Atlas Copco Boomer 353E rock drilling jumbo assists Jinping Hydropower Station Project

China engineering machinery information

Guide: Jinping hydropower station includes Jinping class I and II hydropower stations. Jinping class I hydropower station is located at the junction of Yanyuan County and Muli County, Liangshan Prefecture, Sichuan Province. The concrete double curvature arch dam is 305m high, It is the highest dam of the same type in the world. Its power generation capacity is 3600 MW, and its annual power generation is between 16billion kWh and 18billion kwh

Jinping hydropower station includes Jinping I and Jinping II hydropower stations. Jinping I hydropower station is located at the junction of Yanyuan County and Muli County, Liangshan Prefecture, Sichuan Province. The concrete double curvature arch dam is 305m high, which is the highest dam of its kind in the world. Its power generation capacity is 3600 megawatts, and its annual power generation is between 16billion kWh and 18billion kwh

during the construction of the project, 25 Boomer 353E rock drilling jumbos, 1 Boomer xl3d rock drilling jumbo and 7 ROC D7 drilling rigs from Atlas Copco were used, and good economic and safety benefits were obtained

Jinping hydropower station includes Jinping I and Jinping II hydropower stations. Jinping I hydropower station is located at the junction of Yanyuan County and Muli County, Liangshan Prefecture, Sichuan Province. The concrete double curvature arch dam is 305m high, which is the highest dam of its kind in the world. Its power generation capacity is 3600 megawatts, and its annual power generation is between 16billion kWh and 18billion kwh

Jinping II hydropower station utilizes the natural fall of the 150km Jinping River Bay of the Yalong River to cut bends, straighten and excavate tunnels for water diversion and power generation. The dam site is located 7.5km downstream of Jinping I, and the powerhouse is located in the ditch at the east end of Dahe Bay. A total of 8 sets of 600 MW water turbine generator units are installed, with an installed capacity of 4800mw and an average annual power generation of 24.23 billion kwh for many years. The main works of the power station project was officially started in January, 2007. It is expected that the first unit will be officially put into operation at the end of 2012 and the project will be fully completed in 2015

difficult construction

over the past 50 years, a number of hydropower engineering design and research institutes have studied and investigated the power generation potential and development mode of Jinping Hydropower Station, and finally started the construction of the experimental machine system in 2005. The system can automatically switch different experimental conditions according to the experimental instructions transmitted by the superior computer. The project includes Jinping I and Jinping II hydropower stations. The mechanized branch of tunnel engineering company of China Railway 18th Bureau Group has undertaken the construction tasks of some of the projects

during the construction of Jinping I Hydropower Station, the 37 meter high and 162 meter long river gate will distribute the water flow in the west of Dahewan to four diversion tunnels with a diameter of 12 meters and a length of 16.6 kilometers, and finally make it flow to the cascade II hydropower station. The elevation of the headrace tunnel is arranged on a gentle slope, with a bottom slope of 3.65 ‰. The overburden rock along the tunnel is generally buried at a depth of 1500 ~ 2000m, with a maximum depth of 2525m

although the entrance of the headrace tunnel system of Jinping II hydropower station is only 7.5km downstream of the dam of Jinping I Hydropower Station, it brings great difficulties to the construction of Jinping II hydropower station project, including the construction of low sluice, water release building and headrace power generation system. Among them, four headrace tunnels are flat. "Heminghui was very satisfied to introduce the company's masterpieces, which are about 16.6km long and 12m in diameter, It is the world's first hydraulic tunnel. In order to enter the working faces of the four headrace tunnels, the construction team also needs to excavate two construction adits and one construction drainage tunnel

two of the four diversion tunnels are excavated by full face tunnel boring machine, and the other two are excavated by drilling and blasting method

high efficiency excavation

repair and maintenance, experimental machine device in clean diversion tunnel is mainly excavated by drilling and blasting method, and the whole project is completed in two stages. The constructors first used Atlas Copco Boomer 353E rock drilling jumbo to excavate the upper 7.5m high part. After the excavation of the upper half of the tunnel is completed, the ROC D7 open-pit drill is used to excavate the lower bench by bench drilling method. A total of 25 Boomer 353E drilling jumbos, 1 Boomer xl3d drilling jumbo and 7 ROC D7 drilling rigs are under construction in this project

Li Quan, project manager of mechanized branch of tunnel engineering company of China Railway 18th Bureau Group

the project drives an average of 9 to 12 meters per day and is divided into two shifts, each of which takes 12 hours. Liquuan, the project manager of the mechanization branch of the tunnel engineering company of China Railway 18th bureau group, said that Atlas Copco's equipment has always been very good. "Every performance has achieved the desired results. We are very satisfied with this," he said

manager Li began to use Atlas Copco's equipment when he worked in Hong Kong in 1984. He believes that Atlas Copco has the best tunnel excavation equipment. "Boomer 353E rock drilling jumbo is specially designed and manufactured for complex projects. It is easy to operate and is an ideal choice for tunnel excavation."

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