Tunneling with an excavator breaker or drum blades is a common method when going and blasting is forbidden, restricted, or economically unviable for example, for brief tunnels. Another example is a blend of utilizing a breaker in the starting phase of the tunnel when the top conditions are too weak and then switching to drilling and blasting once the roof structure is more steady. According to the size of the tunnel and the mobile equipment that can be driven in one step as a full face or continuous as a partial face. For doing work in low-roofed tunnels, there are special excavators equipped with entrance linkage.High quality sturdy excavator breaker has always been our hot selling product, if you want to buy, you can contact us to know more about this product.
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