Method for monitoring underwater geomembrane by using node array

Abstract

The invention discloses a method for monitoring an underwater geomembrane by using a node array. The method comprises the steps of: a first step, setting a monitoring node array, and setting middle-section monitoring nodes in a first line or the last line into a square monitoring plate and a square cover matching the square monitoring plate, and arranging stress and strain detecting devices in thesquare monitoring plate; a step 2, connecting the monitoring node array to a downward side of the geomembrane and attaching the monitoring node array onto an underwater reservoir basin or a channel bottom surface, wherein the stress and strain detecting devices communicate with a central server of a control center through a network; and a step 3, allowing a central server technician of the control center to obtain monitoring data of the monitoring node array, performing determination, and acquiring initial geomembrane deformation or coordinates of a damaged position. The technical solution can achieve targeted modular production of the middle-section monitoring node located in the first line or the last line, facilitates lap joint during on-site construction, and has great economic benefits and application prospect.

Description

technical field [0001] The invention relates to the technical field of geomembrane anti-seepage engineering such as water conservancy, construction, and municipal administration, and in particular to a method for monitoring underwater geomembrane by using a node array. Background technique [0002] Geomembrane anti-seepage is a relatively mature technology. In the early days, it was mainly used for vertical plastic anti-seepage projects at the bottom of reservoirs or canal bottoms. Seepage technology, also shows the effectiveness of geomembrane anti-seepage technology. [0003] There are very few examples of using geomembrane in the mountainous reservoirs in karst areas, and there are also unsuccessful cases: for example, the anti-seepage project of the pond and dam in the Pomegranate Garden Scenic Spot in Zaozhuang, Shandong, is due to improper drainage and exhaust, and no monitoring measures. Cause geomembrane uplift damage. Geomembrane technology was used for anti-seepa...

AI Technical Summary

Problems solved by technology

[0004] In the anti-seepage project of the reservoir basin, the integrity of the geomembrane is affected by the following two situations: First, the foundation and foundation subsidence under the membrane cause the geomembrane to be partly suspended, and the tensile and shear strength of the membrane body after extension is low, which is easy to cause The second is that the geomembrane is partially uplifted due to factors such as poor exhaust of the foundation under the membrane, resulting in damage to the geomembrane

At present, once the geomembrane is damaged, there is a practical problem of "difficult to determine the cracking position", and it is impossible to take timely measures to repair it.

The occurrence of the above situation will aggravate the water leakage of the reservoir, cause a large amount of water loss, and affect the safety and normal operation of the reservoir

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