Recently，Two Bao'eGB 80 SThe groundwater pollution control cut-off wall project of Qinghai Haibei Chemical Plant, which was constructed by Hydraulic Grab, was successfully completed.。
The control project of soil and groundwater pollution in the slag yard outside the plant area of Haibei Chemical Plant in Qinghai Province is an ecological environment protection project.，It is located about 580 meters south of the former Haibei Chemical Plant.，Distance to Haiyan County: 6 km，Its purpose is to build a water-blocking curtain around the slag yard.，Cut off the soil in the slag yard、Pathway of Hexavalent Chromium Migration Downstream in Groundwater，Plane impermeable membrane shall be laid on the slag yard.，Prevention of atmospheric precipitation、The ground water in the slag yard is polluted by the soil polluted by the surface water leaching slag yard.。
The thickness of the cut-off wall of the project is 0..6 meters，Depth 41-47 meters，90 walls in total。The geological conditions are very complicated.，The pebble layer will be encountered when the groove is 3 meters.，The maximum depth of the pebble layer is 39 meters.，And contains more boulders.；There are 3 at the bottom-8 meters is harder sandstone.、Slate、Red Shale，The construction capacity and maintenance of the Hydraulic Grab put forward a great test.。
The picture below shows the scene by Bao'e.GB 80 SThe grab picked up numerous boulders.，Some boulders are over 60 cm in size.。
Considering various factors such as geological conditions，The cut-off wall is mainly used“Two drills and one grasp”Grooving is carried out according to the construction process.。Mechanical equipment shall be input in the early stage for groove formation.，However, the efficiency is far from meeting the construction demand.，Resulting in a delay in the construction period.。Under the organization of foundation subconTractor Beijing Jingneng Geological Engineering Co., Ltd.，Beijing Fufeng Construction Machinery Leasing Co., Ltd.，Quickly arrange two Bao'eGB 80 SThe Hydraulic Grab is put into the project for construction.。According to the data collected in the field，Adopt the same construction technology，A Bao'eGB 80 SHydraulic grab can complete a wall in about two days on average，Construction efficiency far exceeds expectations，It also speeds up the progress of the project.，And that vertical precision of the groove can meet the requirement of the design specification.。
In the past few months of construction,，Due to the factors of epidemic situation and epidemic prevention measures，The mobility of technicians and the support of spare parts are relatively difficult.，Despite the difficult geological conditions,，Under the customer's own good management and daily maintenance，Two Bao'eGB 80 SHydraulic grab is always safe, trouble-free and smooth operation，The implementation of the cut-off wall project has been steadily promoted.，Finally, it was successfully completed on September 22.，A satisfactory answer was handed over to the owner and the conTractor of the project.。
Based on site knowledge and feedback from multiple sites，In general，Bao'eGB 80 SThe hydraulic grab has the following overall performance characteristics：
Catch it right High precision of groove forming。GB 80 SEquipped with German original measuring system，The inclination of the grab bucket can be accurately measured，And correct it through the correction system in time.，And ensure that grooving quality。Bao'eGB 80 SSkew system，Accuracy up to 0.01 degrees，The inclination and inclination of the bucket body can be accurately monitored.，The operator can rectify the deviation in advance.。Bao'eGB 80 SLarge area of push plate，And the stroke reaches 150 mm，And that verticality control is facilitate。
Catch it fast That is, the slotting efficiency is high.。GB 80 SEquipped with new typeVType bucket body，Mud flow passage is reserved in the design.，And is favorable for improve that lifting speed of the body bucket.，At the same time, the disturbance of the slurry to the tank wall is reduced.，Reduce the risk of slot landslide.。At work，The rising speed is generally up to 40-45 m/min，Lowering speed up to 65-75 m/min，Helps to improve slotting efficiency。Due to the high amount of work completed per unit time,，Reduced overhead cost，The overall cost per cubic meter completed is also significantly reduced，And that competitiveness is improve。
Catch the province Low cost of instant groove。GB 80 SHydraulic grab using CarterC 9 Engine power 280 kW，Reasonable arrangement of all components in the engine room，Heat dissipation is fast，And is easy to maintain，High efficiency of hydraulic system，Low fuel consumption，The failure rate is low。Long-term operation，A large amount of fuel can be save.。A Bao'eGB 80 SThe hydraulic grab operates at full load under this condition.，The average fuel consumption is only 38 liters./Hour。Under the same working condition，If a hydraulic grapple can reduce fuel by 12 litres per hour，One working 3-4 years、Hydraulic grapple operating for approximately 10000 hour，Only fuel can save 1 million investment.，It also greatly reduces carbon emissions.，Reduce the impact on the environment。
