Down-the-hole hammer plays an increasingly important role in well construction


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DTH(down the hole) hammer;

DTH(down the hole) bits;

The down-the-hole hammer is an integral part of the down-the-hole drilling rig and belongs to the working device of the down-the-hole drilling rig. DTH hammers are divided into low wind pressure DTH hammers, medium wind pressure DTH hammers and high wind pressure DTH hammers.

It is widely used in metallurgy, coal, chemical industry, building materials, mines and water conservancy, hydropower, highway, railway, national defense, construction and other engineering hole forming operations. It is suitable for dry, wind and water mixing, and wet operations of blast-hole water gushing, with reliable working performance , is the ideal equipment for drilling blast-holes today.

Nowadays, due to their high drilling efficiency and low cost of use, down-the-hole hammers and drill bits occupy an increasingly important position in the construction of water wells in my country. However, due to the influence of our original construction technology, how to use them reasonably in water wells The use of down-the-hole hammers and drill bits in the industry requires us to discuss together to reduce the cost of use and improve the life of the down-the-hole hammer and drill bits.

Advantages of down-the-hole hammer and drill bit in water well construction

1. The drilling efficiency is high, the life of the drilling tool is long, the down-the-hole hammer is used for rock drilling, and the medium is air, so there is no recovery and disposal of flushing medium, which reduces the auxiliary time.

2. The cost of use is low. DTH hammer require less axial pressure on the drilling rig, low speed, and low torque at the same time. The natural power consumption is small, and the diameter of the drill pipe is relatively thin. It is easy to install and disassemble, and has a long service life.

3. Drilling with down-the-hole hammer, the hole wall is relatively complete, and there is no pollution from other media. It can basically maintain the original formation structure and water permeability, reduce the time for well cleaning, and save costs.

4. In seriously leaked formations and unstable hole walls, down-the-hole hammer can be used to drill with the pipe to solve the problem of repeated operations.

5. Since the down-the-hole hammer uses wind as the power source, it is constructed in severe winter, which greatly reduces the workload of cold protection in previous winter construction.

Because of the many advantages of down-the-hole hammers and drill bits in water well construction, they have developed rapidly in domestic hydrology and water well construction in recent years. Speed, improving the service life of drilling tools is very important.

DTH hammers

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