Recently，A railway construction heavy industry plateau intelligent anchor trolley equipped with a new intelligent preset anchor prestress system carries out intelligent preset anchor prestress construction on plateau railway.。

Field Construction of Intelligent Anchor Rod Trolley in Plateau

 The project tunnel is affected by the fracture structure.，The rock mass is relatively broken，Altered rock is developed，Locally there are strong alteration fracture zones.，Groundwater enrichment，Complicated geological conditions。Prestressed anchor support is required according to construction design requirements.，How to independently preset the prestress of anchor rod、Application and detection，It is an important and difficult problem in site construction.。

According to the construction situation，China Railway Construction Heavy Industry Co., Ltd. has developed the intelligent presetting technology of anchor prestress.，And carry it toMTZ141GPlateau intelligent type anchor rod trolley。The upgraded anchor bolt trolley can be pre-set by the anchor bolt prestress intelligent preset system.，Real-time display of prestress value of anchor rod、Functions such as automatic stop and construction log recording after prestressing is in place.。After construction and installation of anchor rod，By applying an autonomously preset prestress to the anchor rod，Achieve truly effective active support，Ensure that the quality of prestressed anchor meets the design requirements.。

Bolt prestress intelligent preset system

So far，Railway Construction Heavy Industry Plateau Intelligent Anchor Trolley has completed more than 150 prestressed anchors.，AtIII、IVApply prestress to the anchor rod under the condition of Grade I surrounding rock，The average time for drilling, anchoring and grouting of a single anchor rod is about 5 minutes.。The anchor rod root is effective，The operation is safe and efficient，Railway Construction Heavy IndustryMTZ141GThe plateau intelligent anchor bolt trolley breaks through the problem that the anchor bolt construction cannot be preset independently for a long time.、Apply、Technical Difficulties in Testing Prestress of Anchor Rod，Ffectively solving the problem that the bolt support efficiency can not meet the design requirement，Escort the Construction of Active Support System for Plateau Railway Tunnel。