A hole-forming method in the construction of filling and grouting to strengthen the soil layer around the traction pipe

Abstract

The invention relates to a hole-forming method in the construction of filling and grouting to strengthen the soil layer around the traction pipe. The hole-forming method in the construction of the soil layer around the filling and grouting reinforcement traction pipe comprises the following steps: S1: start drilling a pilot hole from the entry side until the drill pipe is drilled from the exit side, and complete a pilot hole drilling; S2: The reamer is connected to the drill pipe on the excavation side, and the reamer continuously reams and drills from the excavation side to the entry side, and finally drills out from the entry side; during this process, the pipeline is used on the ground along the track of the pilot hole The locator measures the vertical distance between the ground and the reamer at regular intervals and marks it; S3: Make grouting holes at each mark, and the length of the grouting hole at each mark is equal to the corresponding mark measured in step S2 and the reamer. The distance between the holes so that each grouting hole is vertically connected with the guide hole. Using the hole-forming method of the invention can determine whether the grouting between the traction pipe and the surrounding foundation soil layer is complete, and the safety is higher.

Description

technical field [0001] The invention relates to a hole-forming method in the construction of filling and grouting to strengthen the soil layer around the traction pipe. Background technique [0002] Trenchless construction technology was introduced into China in the late 1980s. At that time, the imported trenchless directional drilling rigs were used for some Φ80, Φ110, Φ160 traction pipes with relatively small pipe diameters. Since it was introduced into our country, trenchless construction technology has been adopted by various industries in our country, for example, telecommunications industry, water supply industry, electric power industry, drainage, sewage industry and so on. With the continuation of reform and opening up, my country's urbanization is accelerating and the basic facilities of urbanization are in place and perfect. It is becoming more and more difficult to lay a pipe network underground in the city. Only trenchless construction is the only option. With t...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a hole-forming method in the construction of filling and grouting to strengthen the soil layer around the traction pipe, so as to solve the problem that it is impossible to determine whether it is completely filled in the construction of filling and grouting and strengthening the soil layer around the traction pipe in the prior art. Problems that may cause ground subsidence

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