The cold weather in winter and the cold ground also bring certain difficulties to well drilling. DTH Bit manufacturers remind you to carefully check the installation of DTH Bit equipment before drilling wells. The following are some key points to note when installing DTH Bit and the steps of DTH Bit in winter:
①Choose the location of the wellhead. According to the requirements, dig a round well with the same diameter as the drill bit and roughly the same depth as the drill bit, and put the drill bit in it.
②Aim the center of the turntable of the well rig at the center of the round well to be dug, and place the drilling rig. Hang a rope from the pulley on the derrick and tie an object, adjust the outriggers so that the rope is aligned with the center of the turntable hole, and put a large wooden block under the outriggers to make the outriggers stable and reliable.
③ Dig a mud pool with a width of 2 meters, a length of 3 meters, and a depth of 1 meter near the DTH Bit 5 meters for mixing when the drilling machine drills into the sand layer.
④Place the submersible pump in the well or other water source near the well rig, and connect the submersible pump with the pressure head port with a water pipe. Used for scouring soil during drilling.
⑤When connecting the drill pipe, the throttle of the diesel engine should be small, and try to keep the drill pipe from swinging left and right to avoid premature damage to the drill pipe thread.
DTH Hammer winter drilling steps:
①Configure appropriate water pump: After the well is completed, the dynamic and static water level of the well and the corresponding water output should be measured according to the construction drainage situation when drilling the well, and then according to the height difference between the ground and the dynamic water level and the irrigation method you use, the pump needs to work The head determines the total head of the pump. The flow rate of the pump must not exceed the flow rate of the well. According to the above two conditions, purchase the corresponding pump.
②Reasonable well hole layout: The location of well holes should be reasonably arranged according to the actual local hydrogeological conditions. If there is no hydrogeological data, the existing water source wells nearby can be used as the basis for well arrangement. In areas where shallow groundwater is not abundant, shallow wells must not be blindly drilled; in areas with relatively rich shallow groundwater, shallow wells are suitable for farmers to build themselves, but the layout of the wells must not be too dense to avoid causing gaps between adjacent water source wells. affect each other.
③Adopt correct construction methods: There are two construction methods for large wells: one is large slotting method, manual excavation or blasting construction; the other is caisson method, drainage construction or undrained construction. In the construction of the opposite-pumping type, two methods are generally used: a mechanical pendant hammer and a manual pendant hammer. The gravity action of the pendant hammer is used to drive the suction pipe directly into the ground.