Recently，Tabuk province, Saudi ArabiaNEOMNew TownThe LineMain tunnel of railway trunk lineL2-NGood news came from the tunnel.，By Zhongjian Middle East、Undertaken by China Construction Sixth Engineering Bureau，Railway Construction Heavy Industry Co., Ltd. participated in the construction of complete sets of equipment for tunnel drilling and blastingL2-NMonthly footage record of 3 tunnels refreshed，The monthly footage record of the main tunnel of the main line of the project was refreshed to 185 meters./Month，Record of single-cycle footage refreshed to 5.93 meters。

Blasting hole drilling by rock drilling jumbo

Arched trolley for explosive loading

Wet shotcreting of concrete by wet shotcreting trolley

Rock drilling jumbo for anchor hole drilling

Because the temperature of the project site is over 40 all the year round℃，The temperature difference between day and night is large，The climate is dry all year round、The wind and sand are strong，Instantaneous rainfall in rainy season，Large range of humidity variation，Therefore, the construction organization is difficult.。The extremely harsh environment also has extremely strict requirements for large-scale mechanized equipment.，More than half of the tunnel construction equipment of the project is provided by China Railway Construction Heavy Industries.，Including fully computerized three-arm drilling jumbo、Concrete wet spraying trolley、Arch frame trolley、Anchor rod trolley and concrete mixing station, etc.。

The complete set of equipment for tunnel drilling and blasting construction of China Railway Construction Heavy Industry is on the project site.

China Railway Construction Heavy Industry Co., Ltd. aims at the extreme high temperature in the Middle East.、High humidity、Strong wind and sand、Large variation of temperature and humidity, etc.，Targeted developmentMESeries of complete equipment for tunnel drilling and blasting construction in the Middle East。Through the United Arab Emirates、Use of multiple projects in regions such as Saudi Arabia，METhe series of complete sets of equipment for tunnel drilling and blasting construction in the Middle East show strong product strength.。

China Railway Construction Heavy Industries Co., Ltd. provides customized products and full life cycle services for customers.，Low product failure rate、And that construction efficiency is high、Strong adaptability to working conditions，It is more suitable for construction in the Middle East and similar extreme working conditions.。

 

According to statistics，At present，The monthly footage of Chinese contractors in each work area is about 25% faster than that of foreign contractors on average%，High reliability of construction equipment 9%。