Horizontal guiding drill while-drilling detection early warning system

Abstract

The invention provides a horizontal guiding drill while-drilling detection early warning system which comprises an underground while-drilling detection system and a ground signal processing and earlywarning display system that are connected with each other by a two-core communication cable, so that high speed data communication can be realized; in the construction process, the underground while-drilling detection system works under the ground and adopts active acoustic detection technology for detecting, thus completing acquisition and transmission of data of underground pipeline detection; and the ground signal processing and early warning display system works on the ground and is used for controlling the underground while-drilling detection system, processing and displaying the detection data and alarming by sound and an indicator light according to the danger level of underground obstacles. The system combines the detection technique and the drilling construction technique so as torealize while-drilling detection early warning, can effectively detect the obstacle which is about 1m far from the advance locus of a horizontal guiding drill, has higher detection accuracy and effectively reduces the construction risk.

Description

technical field [0001] The present invention relates to a new type of detection-while-drilling early warning equipment, which is used in horizontal directional drilling oriented drilling or back-expansion process, detects the distribution of obstacles within 1m around the directional drill while drilling, and reports to the pipeline in time when an obstacle pipeline is encountered. Horizontal drilling rig operator alert. Background technique [0002] Horizontal directional drilling is a new type of non-excavation construction equipment that has emerged in recent years. In the process of pipeline construction, it can effectively protect the original construction facilities, and the environmental damage and interference are small, the construction precision is high, and the cycle is short, so it has been widely valued by people. At present, in the construction of urban pipelines, horizontal directional drilling has been widely used for construction, and obvious economic and s...

AI Technical Summary

Problems solved by technology

[0008] Third, domestic management of underground pipelines is not standardized

The underground pipeline detector or ground radar is a kind of ground detection equipment. Due to the limitations of geological conditions and equipment detection accuracy, there are often detection "blind spots" in the area near the guide drilling trajectory, but the actual pipelines cannot be detected. Hidden dangers in safe construction

For ground penetrating radar, the terrain conditions of the construction site are relatively high, and the ground of the construction site must be relatively flat, which is often difficult to fully meet

In addition, the requirements for geological conditions are relatively high, and the signal attenuation is serious for soils with rich water content. When the buried depth of underground pipelines is greater than 5m, the detection effect will be greatly reduced.

For the underground pipeline detector, it is required that the original pipeline distribution on the construction site is relatively regular. If the pipeline distribution is relatively complicated, the detection accuracy will be greatly affected; if the pipeline distribution is deep, it is often not detected.

In addition, the underground pipeline detector is only suitable for detecting metal pipelines in principle

[0025] (2) Poor anti-interference ability

[0026] (3) The requirements for the quality of the detection personnel are too high

However, for cities like Shanghai, where municipal construction has been carried out earlier, the distribution of underground pipelines is generally more complicated. Only by accumulating quite a lot of detection experience can we accurately grasp the distribution of the original pipelines

Even so, the negligence of the detection personnel may still have disastrous consequences

[0027] (4) The detection process and the construction process are relatively out of touch

It is precisely because of the relative disconnection between the detection process and the construction process that the construction risk is caused and exacerbated

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