TIANJIN HARVEST HIGH PRESSURE PUMP MANUFACTURING Co.,Ltd Geological exploration and disaster control HARVEST TIANJIN HARVEST HIGH PRESSURE PUMP MANUFACTURING Co.,Ltd Underground coal mine engineering 1. Gas extraction/discharge, as an accessory equipment of ZDY directional drilling rig, provides high-pressure slurry power for downhole motor and completes the construction of directional drilling for gas extraction. By grouting to block the water conducting channels of aquifer in the coal seam, the safety of coal mining is guaranteed. 2. The grouting fire prevention and extinguishing adopts the ground grouting station to make slurry, and the coal seam fissures are blocked by high-pressureouting process (such as the grouting of cement slurry in sections), and the risk of spontaneous combustion is suppressed. 3. Coal seam watering and pressure relief reduce the of coal dust by watering, and implement pressure relief drilling at the same time, which reduces the risk of coal and gas outburst accidents. 1. For geological survey, coal seam thickness measurement and other exploration scenarios, combined with directional drilling machine to achieve precise drilling. 2. In the pressure technology, the water-bearing layer is grouted to ensure safe mining under complex geological conditions. Technical features and advantages Structure Design 1. Compact and flexible: Small volume, suitable for narrow roadway space in coal mine (such as drilling site with height). 2. Independent mobility: Caterpillar chassis design, no need for additional traction equipment, convenient mobility, especially suitable for multi-drilling site switching operation 1. Load-sensitive hydraulic system: Automatically adjust output pressure and flow according to working conditions, stable operation and reduced energy consumption 2. High- grouting capability: Support ground grouting station and high-pressure grouting process at the hole mouth, grouting pressure can reach above lOMPa, ensuring gr permeation to deep cracks Process adaptability 1. Can be matched with multi-stage casing drilling process (such as (D193mm first opening and 158mm second opening drilling) to meet the drilling needs of complex geological strata. 2. Support continuous slurry preparation and grouting (such as sequential anded downward cement grouting) to improve engineering efficiency. 31 HARVEST High Pressure Pump HARVEST High Pressure Pump 32