Ultrasonic multi-point roadway surface displacement monitoring device

Abstract

The invention relates to an ultrasonic multi-point roadway surface displacement monitoring device, which comprises a split type receiving transducer R and a transmitting transducer T which are arranged at the left side of a roadway, two split type transmitting transducers T and a receiving and transmitting integrated transducer RT which are arranged at the middle top of the roadway, and two split type receiving transducers R which are arranged at the right side of the roadway, thereby forming an upper triangular left side measuring line, a center line top bottom measuring line, an upper triangular right side measuring line and an upper triangular horizontal measuring line. Each split type receiving / transmitting transducer or integrated transducer adopts a four-core cable to be laid to a monitoring host along the roadway, and the monitoring host is connected with a remote upper computer through an RS485 or a wireless Zigbee. An RT matching latch module, an ultrasonic ranging module, a display alarm module, a data storage and wireless acquisition module, a remote data transmission module and a power supply module which are connected with the ultrasonic receiving / transmitting transducers are arranged inside the monitoring host. The ultrasonic multi-point roadway surface displacement monitoring device utilizes the ultrasonic ranging principle, and is stable in monitoring.

Description

technical field [0001] The invention relates to the field of support effect and safety anti-slump monitoring of rock mass engineering such as shafts, tunnels or chambers, and specifically relates to an ultrasonic multi-point roadway surface displacement monitoring device, which can be used in shafts, mine roadways, tunnels and other projects Surface displacement observation and monitoring of excavated space. Background technique [0002] In the construction of mine roadways, geotechnical tunnels and chambers, the four surface displacement observations of the surface of the excavation space, which are flat up, flat down, center left, and center right, are important indicators for evaluating the support effect and forewarning rock mass collapse. It is a mandatory inspection item limited by regulations and specifications. At present, the conventional test methods for this parameter are mainly the artificial cross-wire method and the convergent meter method, both of which are c...

AI Technical Summary

Problems solved by technology

At present, the conventional test methods for this parameter are mainly the artificial cross-wire method and the convergent meter method, both of which are contact measurements, which are time-consuming and labor-intensive in application, and frequently interfere with traffic and ventilation, resulting in large error results and long acquisition cycles. The realization of real-time monitoring seriously restricts the improvement of safety management and construction technology

There are also very few cases of roadway surface displacement monitoring using photogrammetry, laser ranging and other technologies, but the installation cost of the measuring station is extremely high, and the data analysis is difficult, so it is not suitable for multi-point measurement of a large number of measuring stations

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