Impactor Subject: Drilling Words: impactor English: hydro-hammer price package of jet grouting rig, hydro-percussive hammer, down the-hole hammer (DTM) Explanation: Also known as hydraulic impact rotary drill , hydraulic DTH. In drilling fluid driven media, with high pressure water flow energy and dynamic impact energy to produce a continuous impact load power tool bottom of the hole. Usually connected directly to the upper part of the core bit in rotary drilling, while a continuous impact load transmitted to the coring drill, the drill with rotary cutting and breaking rock joint impact in two ways. For geological core drilling, particularly suitable for applications in hard rock crushing medium hardness and coarse heterogeneous formations. Hydraulic impact rotary drilling techniques can improve the penetration rate, extending back to the times footage, slowing drilling bend. This is a Chinese invention, also abroad for the development of large oil wells, geological drilling. High Pressure Jet Roofbolter and high pressure jet grouting construction method in geotechnical engineering anchor a high pressure jet grouting anchor construction machinery and high-pressure jet grouting method anchors. Loose sand in the river and waterfront phase phase of the silt layer jet grouting pile diameter drilling rigs, not construction bolt high pressure jet grouting rig manufacturer since: gravel layer rich in water pressure, difficulty anchor into the hole, casing method water will return loop will produce piping, Chung sand, gushing water, ground subsidence and other accidents jet grouting rig, mud-free anchoring force, but to use high cost, long duration, for the inner city have supported method dirty qi. The present invention is to provide a new high-pressure jet grouting bolt rig, bolt rig the pressure rotating jet can vertical, horizontal, diagonal full range of construction Jet anchor piles and anti-floating, tension bolt, the high pressure Churning Roofbolter may be applied not only bigger and straight rotary jet cement anchor bolt head can expand construction. The above object of the present invention is to provide a new kind of high pressure jet grouting bolt rig, bolt high pressure jet grouting construction method to solve the soft soil of silt layer construction without anchoring force can not be the problem, it will be free, in loose gravel soil, in order to lower a hole tendon using casing up method, water will return cycle produces sudden Chung, Chung sand, gushing water, ground subsidence and other accidents.