An anti-leakage facility for underground pipelines

Abstract

The invention discloses an anti-seepage facility for underground pipelines, which is mainly composed of an anti-seepage pipeline, a seepage well and an inspection well; the anti-seepage pipeline is mainly composed of dirty oil or sewage pipelines and an anti-seepage layer; It consists of a drainage board and an outer protective layer. The drainage board is wrapped on the outer wall of the oil or sewage pipeline, and the outer protective layer is wrapped on the drainage board; the anti-seepage pipe passes through the well wall of the seepage well and the inspection well and is sealed with the well wall , The dirty oil or sewage pipeline of the anti-seepage pipeline in the leak well is continuous, and the anti-seepage layer is disconnected; the anti-seepage pipeline in the inspection well is disconnected. The anti-leakage facility of the invention can effectively achieve the purposes of anti-leakage and pollutant collection, reduce project cost and improve on-site construction efficiency.

Description

technical field [0001] The invention relates to an anti-leakage facility used in the field of petrochemical industry, in particular to an anti-leakage facility for underground pipelines. Background technique [0002] There are many underground oil or sewage pipelines in petrochemical engineering. In order to avoid pollution of the groundwater environment caused by oil and sewage leaking from pipelines, according to the requirements of GB / T50934-2013 "Technical Specifications for Seepage Prevention in Petrochemical Engineering", When the primary and secondary ground pipes use non-steel metal pipes (usually socket and flange connections), the connection parts are weak links and are prone to leakage, so corresponding anti-seepage measures must be taken. [0003] In the prior art, the structure of the anti-seepage layer used by the pipeline itself is mainly composed of an outer protective layer, a high-density polyethylene (HDPE) film, an inner protective layer, a sand layer and...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of many anti-seepage layer construction procedures in the prior art, the high-density polyethylene (HDPE) film anti-seepage layer outside the pipeline has poor anti-seepage effect at the connection nodes of the seepage well, inspection well, and water-sealed well wall, and groundwater is easy to infiltrate , thereby affecting the judgment of whether the pipeline is leaking. At the same time, the construction of the fixed joints connected to the anti-seepage layer under the pipeline is difficult, and the construction quality is not easy to guarantee, thereby affecting technical problems such as the anti-seepage effect. The invention provides an anti-seepage facility for underground pipelines , the anti-seepage facility can effectively achieve the purpose of anti-seepage and pollutant collection, reduce project cost and improve on-site construction efficiency

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