Construction of Pumped-storage Power Station Assisted by Computerized Three-arm Drill Jumbo of China Railway Construction Heavy Industry

Recently，Railway Construction Heavy IndustryZYS113-FLAComputerized three-arm drilling jumbo at the construction site of a pumped storage power station in Zhejiang，Carry out 6 m and 9 m system boltholes。

In order to solve the problem that the existing mechanized equipment has single function,、Poor flexibility、Low construction efficiency and the like，China Railway Construction Heavy Industry has developed this fully computerized three-arm rock drilling jumbo.，The overall length is 17.6 meters，Overall width 2.9 meters，Maximum working height 11.3 meters，Maximum working width 16.6 meters，Maximum drilling depth of single rod 5.2 meters，The rock drill is powerful，The drilling speed is fast，Drill blast holes up to 3～5 meters/Minute；The trolley is equipped with a full computer control system.，Automatic, efficient and intelligent drilling、Anchor rod construction、Cooperate with grouting and pipe shed reinforcement、Matching charge and prying hair、Advanced geological exploration and geological analysis、Profile scanning of excavation surface、Digital functions such as rock drilling parameters and data storage and transmission，At the same time, it has the function of anti-jamming and anti-empty hitting.、Fault diagnosis、Construction log recording and other functions。Available according to customer needs，Expand and upgrade the function，For example, it can be equipped with hydraulic drill clamp.、The connecting rod mechanism and the like enable the trolley to have the functions of long anchor rod construction and≥Construction of 30m advance drilling hole。

Place the trolley on site to be perpendicular to the working face.，Three drilling booms can be used simultaneously to construct the anchor hole.，The construction angle of each anchor hole can be accurately displayed on the trolley computer.，The operation is convenient and efficient，Probability of sticking and hole collapse＜10%（It is directly related to surrounding rock damage and interlayer.）。The equipment has entered the site since the end of July this year.，About 15 squad leader anchor holes have been completed.，Use 21-foot drill pipe+φ64 drill bit，It takes about 6 minutes to complete the construction of 6 meters anchor hole.；Use 21-foot drill pipe+10-foot fast drill pipe+φDrill bit of 89，It takes about 12 minutes to complete the construction of the 9-meter bolt hole.。The construction process is efficient、Stable，Highly recognized by customers。

China Railway Construction Heavy Industry will adhere to customer demand-oriented，Carry out independent innovation，Vigorously develop informatization、Intelligent construction equipment，Contribute to the Intelligent Construction of Tunnels in China。

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