New record | TBM for railway construction and heavy industry breaks 400 meters per month, helping key coal mine project construction

Recently，It is an open Roadheader independently developed by China Railway Construction Heavy Industry Co., Ltd. and applied to Yangcheng Coal Mine of Jining Energy in Shandong Province.（TBM）News of victory came。7-In August, the cumulative footage in a single month exceeded 400 meters for two consecutive months.，Among，Accumulated footage of 416m in August，Daily footage breaks through 22.5 meters，Class footage breaks through 11 meters。

ThisTBMIt was formally installed in the well on November 12, 2022.，During the period, the cage transportation of large equipment was conquered.、There are many difficult problems such as long-distance transportation in underground roadway.。The total installation length of various equipment components is more than 80 meters.，Successfully completed the installation and commissioning after 38 days。January 15 this year，TBMInitiate tunneling，From the first monthly footage of 190 meters to the current monthly footage of 416 meters，The tunneling efficiency has reached about 4 times of the traditional tunneling efficiency.，And provide more safety for coal mine roadway construction.，Fast equipment support。

During tunneling，TBMOvercome coal seam penetration successively、Water gushing、Roof falling piece side、Soft rock fracture zone、Earth pressure、Paste the cutter head、Multiple unfavorable factors such as blocking the shield body。Field service personnel of China Railway Construction Heavy Industry Co., Ltd.，Overcome downhole high temperatures、Dust、Water gushing、Harsh working conditions such as long working hours，All-day follow-up maintenance，Deal with problems at the first time，Continuously optimize the equipment，Minimize equipment failure。

ForTBMThe problem of slow driving in soft rock broken stratum，On-site service personnel communicated and discussed with the mining area for many times，Support from the roof、Anti-roof fall rib、Cutter head cleaning、Equipment failure control、Analysis on change of tunneling route, etc.、 Experiment 、Sum up，Take targeted measures，Good results have been achieved。Through the sincere cooperation between the two sides，Finally, the seeds of efforts will be turned into gratifying fruits.。

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