On-line monitoring device and method for saturation line of midline-method tailing pond

Abstract

The invention provides an on-line monitoring device and method for a saturation line of a midline-method tailing pond, and relates to the technical field of tailing pond monitoring. The on-line monitoring device comprises a protective sleeve, a pressure measuring pipe, an acquisition assembly, a cable and a sensor; wherein connecting pieces are arranged at the two ends of the protective sleeve, and the protective sleeve is arranged outside the pressure measuring pipe in a sleeving manner; the acquisition assembly is mounted on a connecting piece at the top end of the protective sleeve and is connected with a sensor in the pressure measuring pipe through butt-joint plugs at two ends of a cable; the two ends of the pressure measuring pipe are provided with connecting structures, and the inner wall of the pressure measuring pipe is provided with a fixing structure used for fixing the sensor and the butt joint plug. The on-line monitoring device for the saturation line of the mid-line method tailing pond can be integrally heightened along with lifting of a dam face, operation is convenient, consumed time is short, the installation elevation of the sensor is not changed in the process that the casing pipe and the pressure measuring pipe are heightened along with the dam body, and it is guaranteed that monitoring of the change of the water level in a hole from beginning to end is embodied based on the same standard.

Description

technical field [0001] The invention relates to the technical field of tailings pond monitoring, in particular to an on-line monitoring device and method for the infiltration line of a tailings pond using a center line method. Background technique [0002] Tailings pond refers to the place where dams are built to intercept valley mouths or enclosures, and is used to store metal or non-metal mines for ore sorting and then discharge tailings (waste sand). It is an indispensable and important facility for mine production. At the same time, the tailings pond is a man-made debris flow hazard source with high potential energy, and there is a danger of dam failure. Once the accident occurs, it is easy to cause serious accidents, cause heavy loss of personnel and property, and have a major social impact. It is a key supervision object of the national supervision department. A safety online monitoring system must be built for real-time monitoring. The hazard of tailings dam failure ...

AI Technical Summary

Problems solved by technology

[0004] Problem 1: The outer slope of the tailings dam built by the center line method changes dynamically with the dam building process, and the seepage line monitoring equipment fixedly installed on the outer slope will be affected by the dam construction and will be buried by the tailings on the outer slope surface that is constantly rising

At present, the center line method tailings dam monitoring equipment is lifted along with the dam body during the dam construction process. In order not to be buried, the infiltration line monitoring equipment installed on the surface of the dam body needs to be dismantled, and then reinstalled after the dam body is piled up to the stage elevation. Installed at the original position; while the infiltration line monitoring sensor installed inside the dam body is installed in the borehole, it is necessary to dismantle the originally installed monitoring facilities at the monitoring hole, take out the sensor installed in the hole, and heighten the upper part of the monitoring hole. After the infrastructure is installed, the monitoring equipment and sensors are reinstalled. The whole process is time-consuming and laborious. The reinstallation process will change the installation position of the water level sensor in the monitoring hole, resulting in discontinuous monitoring and inaccurate monitoring data.

In short, this problem is the process of dismantling and installing the infiltration line monitoring facilities of the tailings pond with the central line method along with the lifting of the dam body. This is one of the main reasons why the on-line monitoring of the infiltration line in the tailings pond with the central line method cannot be implemented

[0005] Problem 2: In the process of building a dam with the center line method, the outer slope of the accumulation dam requires large-scale construction machinery operations, which can easily cause damage to the cable where the soaking line sensor is collected to the acquisition device or the acquisition device is connected to the upper computer, and the data is interrupted (such as concealed buried at the end of the dam). The cable between the infiltration line sensor and the acquisition device under the sand, and the cable between the acquisition device and the remote acquisition computer will be cut by the bulldozer working on the dam surface)

This problem is the problem of cross damage between monitoring facilities and dam construction, and it is one of the reasons why many midline method tailings ponds cannot normally implement online monitoring of infiltration lines

[0006] Question 3: The data transmission of the existing infiltration line online monitoring system is collected by the local area network, and all the data are collected to the local collection computer of the tailings pond. The stable operation of the system depends on the maintenance intensity of the local local area network, and the failure of any node is possible. Cause partial or complete system paralysis

This problem seriously affects the overall stability of the online monitoring system. It exists in both the upstream tailings pond and the midline tailings pond, and it is especially serious in the midline tailings pond.

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