The geology of Southwest China is complex and changeable.，Wherein the fault fracture zone、Rich in water、Large deformation of soft rock、Karst caves and other unfavorable geology are particularly prominent.，Complex geology has always been an unfavorable factor affecting the safe construction of tunnels.。Railway Construction Heavy IndustryDGZSeries 150 multifunctional drilling rig is one of the construction tools for tunnel advanced geological prediction.，Acting as a tunnel“Scout”The role of，Its maximum drilling depth is 150 meters.，By means of advanced drilling and geological coring, the front of the tunnel face is uncovered.“Mystery”，Provide strong support for safe tunnel construction。

Railway Construction Heavy IndustryDGZ150 Series Multifunctional Drilling Rig

 

From“Core”Set out

Fight for the plateau tunnel

Railway Construction Heavy IndustryDGZ150GPlateau Type Multifunctional Drilling Rig Appears in a Plateau Tunnel，Helping Plateau Railway Safety、Efficient、Environmental protection construction。ProjectAThe tunnel is more than 4000 meters above sea level.，It is cold and anoxic all year round，The mountain surface is dominated by alpine meadows，There are few trees，The internal structure of the mountain is complex.，It is a great test for personnel and equipment to get through the tunnel in such a mountain.。

Facing extremely harsh construction conditions，Multifunctional drilling rig in the mountain“Thread the needle”，Play a stable role.、Efficient job performance：50m advance borehole+Measurement while drilling，After construction, the drilling data are exported to generate geological nephogram and log parameter curve.，Accurately understand the geological information ahead；76 mm aperture、8 hours for rope coring with 50 mm core diameter and 30 m depth，The core integrity is high，Core receipt rate up to 95 percent%Above，Further grasp the information of surrounding rock ahead，Provide safety guarantee for subsequent tunnel construction。

ATunnel core sampling

 

With“Core”For Ben

Unveil the mystery of the mountain

ProjectBThe average altitude of the tunnel is 4500 meters.，The site surrounding rock is mostly composed ofⅣ、ⅤLevel is the main factor，Moderate rock burst in the tunnel body、1～Grade 3 large deformation、Fault fracture zone、Extremely high-risk mud and water inrush、High ground temperature and other unfavorable geology，Advanced geological prediction process is particularly important.。Faced with such a complex working condition，Multifunctional drilling rig shows its skill again，Coring was completed several times to detect the geology ahead of the tunnel，Construction of 30m water discharge and pressure relief hole to eliminate the danger of mud bursting and water inflow，Advanced pipe shed and grouting reinforcement construction provide safety guarantee for tunnel excavation construction。

BComprehensive operation of tunnel face

Recently，Railway Construction Heavy IndustryDGZ150 Multifunctional Drilling Rig Helps Chongqing Yuwan high-speed railway Construction Again。The projectCThe geology of the tunnel site is mainly mudstone.，It is a key and difficult project in the bid section.。Facing the mountains，The multifunctional drilling rig has completed the task with quality and quantity guaranteed.，76 mm aperture、10 hours for rope coring with 50 mm core diameter and 35 m depth，The core receiving rate reaches 95 percent%Above，It provides a strong basis for tunnel excavation.。

CTunnel core sampling

Other than that，DGZThe 150 series multi-purpose drilling rig has also passed through the Lalin Railway.、Chengdu-Kunming Railway、Yawan Railway、Fuyi Expressway、Practical inspection of many tunnel projects such as Pingwu Expressway。A sharp weapon in hand，Tunnel construction reduces risk，Increased security，Railway Construction Heavy IndustryDGZ150 Series Multifunction Drilling Rig from“Core”Set out，For tunnel safety、Contribute to efficient construction。