Automatic inspection type layered settlement instrument

Abstract

The invention provides an automatic inspection type layered settlement instrument. A conduit connection ring is arranged out of a conduit joint, and a conduit sealing head is mounted at the bottom end of a conduit; a settlement ring is arranged out of the conduit, a magnet ring is mounted in the settlement ring, and folding and unfolding anchoring iron sheets are installed out of the settlement ring; the upper end of the conduit is provided with a measuring box, a magnetic induction measuring probe is mounted in the conduit and is connected with a fine cable, the upper end of the fine cable is connected with an electric settlement amount measuring apparatus which is connected with a measurement and control and wireless transmission apparatus, and the measurement and control and wireless transmission apparatus is connected with a radio transmit-receive antenna and further connected with a hand-held monitoring apparatus located out of the measuring box through a signal cable. The automatic inspection type layered settlement instrument is used for long-term monitoring of layered settlement of a soft soil foundation on the land and has the advantages of easy and convenient installation, low cost, high monitoring precision and sensitivity and capacity of automatically monitoring settlement amount of each soil layer to be measured; automatic unmanned monitoring and data acquisition are realized because of automatic wireless transmission of monitoring data to a remote receiver, and the hand-held monitoring apparatus can also be used on site for reception of the monitoring data and real time detection.

Description

technical field [0001] The invention belongs to a civil engineering quality monitoring instrument, in particular to a settlement instrument for long-term monitoring of layered settlement of land soft soil foundation - an automatic inspection type layered settlement instrument. Background technique [0002] In port construction, soft-foot settlement meters are usually used to monitor the layered settlement of soft soil foundations. The working method of the soft ruler settlement instrument is: pre-embed the settlement tube made of PVC material in the soft soil foundation to be tested, and set the settlement magnetic ring in sections outside the settlement tube, and the settlement magnetic ring will settle with the soil layer to be tested. There is a magnetic induction sensor at one end of the tape, and it is connected to the receiver at the other end of the tape through the signal line attached to the tape. There is a buzzer in the receiver, and the scale is marked on the tap...

AI Technical Summary

Problems solved by technology

[0004] 1. In the prior art, the probe at the lower end of the steel wire rope is composed of a copper pipe weight iron block, a wireless transmitter module, a battery, a reed switch magnetic induction sensor, etc. The probe is relatively thick, and it is easy to get stuck at the casing interface when sliding in the casing, which affects the measurement accuracy

[0005] 2. There are many probe components and heavy use for a long time will cause the transmission wire rope to be elongated and deformed, which will affect the measurement accuracy

[0006] 3. The wireless module in the probe needs to be powered by a battery, and the battery must be replaced manually on a regular basis, and the battery must be removed manually from the casing, which is inconvenient to operate

[0007] 4. The "wireless transmitting module" on the probe in the soil layer is easily interfered by the electrical signal of the electrical equipment buried in the construction of the nearby soil layer (such as the metal electrode buried in the soil layer in the electroosmotic method of soft foundation reinforcement to the nearby soil layer) Electromagnetic interference), but the probe detection signal cannot be sent to the receiver of the soil surface in time, which affects the measurement accuracy

Images