| 摘要 |
A direct impact driving type extra-high pressure liquid injection lance for soil remediation, and a multifunctional liquid injection equipment and a liquid injection vehicle using the lance are provided to maximize a diffusion area of liquid to obtain an excellent soil remediation effect, to be assembled or disassembled manually without using a special tool, to be sealed and clamped completely and solidly, and to prevent deterioration of sealing or deformation of the lance during an impact driving. A direct impact driving type extra-high pressure liquid injection lance for soil remediation comprises: a hollow tunneling pipe(200) of which a tip portion is closed, and which has a plurality of nozzle holes(201) formed in the middle thereof, and a peak part(202) formed on the closed tip portion thereof such that the peak part is drived in the ground; a hollow intermediate connecting pipe(300) separably connected to a rear end of the tunneling pipe; and a hollow end pipe(400) which is separably connected to a rear end of the intermediate connecting pipe, and of which one side is connected to a liquid supply hose, wherein an inserting shaft(S) is formed in one of the tunneling pipe and the intermediate connecting pipe and one of the end pipe and the intermediate connecting pipe, an inserting hole(H) is formed in the other of the tunneling pipe and the intermediate connecting pipe and the other of the end pipe and the intermediate connecting pipe, a male screw part(s1) is formed on the inserting shaft, a female screw part(h1) is formed on the inserting hole, and a sealing material(600) is installed on an outer diameter portion of the inserting shaft adjacent to the male screw part of the inserting shaft. |
