Rapid construction method of pipe jacking working well in upper soft and lower hard stratum

Abstract

The invention discloses a quick construction method of a pipe jacking working well in an upper soft and lower hard stratum. A site is smoothed, staking out in survey is carried out, the position of apile hole is positioned; a rotary drilling machine is used for drilling in an upper soil layer, every time a certain distance is drilled, a drill head of the rotary drilling machine exits out of the pile hole, and a pile casing is put into the pile hole; the method is repeated until drilling is carried out into a lower base rock layer, and all the pile casings are anchored in the upper soil layer;the rotary drilling machine is continuously used for drilling in the lower base rock layer until drilling is carried out to a specified elevation; transverse excavation is carried out in the hole wall at the bottom of the pile hole to form a pipe jacking operation space, wherein the pipe jacking operation space is provided with an opening into which the pipe jacking to be constructed can enter; ajacking device is installed in the pipe jacking operation space; and at the bottom of the pile hole and at the position of the pipe jacking construction, the lower base rock layer is excavated transversely, and jacking construction is carried out on the pipe jacking through the jacking device. The quick construction method reduces the construction workload, reduces the construction difficulty, shortens the construction period and reduces the impact on the environment.

Description

technical field [0001] The invention relates to the field of construction, in particular to a rapid construction method for pipe-jacking working wells in upper soft and lower hard formations. Background technique [0002] Pipe jacking construction is a non-excavation construction method, and it is a pipeline burying construction technology that does not excavate or excavates less. This technology completely solves the problems of damage to urban buildings and road traffic congestion during pipeline burying construction, and highlights its advantages in terms of stabilizing the soil layer and environmental protection. This is very important for cities with heavy traffic, dense population, numerous ground buildings and complicated underground pipelines. It will create a clean, comfortable and beautiful environment for the city. In the construction environment of the upper soil layer and the lower bedrock layer, according to the conventional construction method, a foundation p...

AI Technical Summary

Problems solved by technology

In addition, due to the high hardness of the bedrock layer, the difficulty of excavation is relatively high, and the construction period will be extended accordingly