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Practical applicability of steel wire cable sensor for rock fall detection
| Content Provider | Scilit |
|---|---|
| Author | Komazaki, M. Hirama, K. Ito, F. Ujihira, M. Kawamura, Y. Tokunaga, T. |
| Copyright Year | 2018 |
| Description | Authors propose a monitoring system using cable sensor for rock collapse and fall detection. Practical applicability of this prediction system for concrete structures such as rock-shed or inlets of tunnels had been already confirmed, stretching the sensors in grid pattern to the internal surface of the structures. The tensile strength of cable sensor (CS) is 40 – 50 $kg_{f}$ and not enough for usage under real environmental conditions. For this reason, a steel wire type cable sensor (SWCS) is proposed. Here, a field test of SWCS for practical applicability for rock fall detection was carried out and the following points were made clearly: 1) The output signal level of SWCS is lower than that of CS. However, the sensitivity of SWCS is enough for practical use. 2) The falling trajectory of a rock was visually estimated from topographic method of the output voltage of SWCS. Therefore, SWCS could be recommended for practical use. This chapter proposes a monitoring system using cable sensor (CS) for rock collapse and fall detection and compares sensitivity characteristics of CS and steel wire cable sensor (SWCS) under practical conditions. It examines a possibility to track a rock fall trajectory through analysis of output voltage changes of the sensor with the time lapse. For better visualization of the fall trajectory, a topographic representation of output voltage of SWCS with the time lapse was made, when the products of maximum amplitude values of output voltages of every crossing SWCS were assigned to all crossing points of the sensors. The output signal level of SWCS is lower than that of CS. However, the sensitivity of SWCS is enough for measurement. Therefore, SWCS could be recommended for practical use. Motion behavior of a concrete block dropped to a slope could be tracked almost correctly through analysis of the output voltages of SWCS. Book Name: Mine Planning and Equipment Selection 2000 |
| Related Links | https://content.taylorfrancis.com/books/download?dac=C2004-0-28217-4&isbn=9780203747124&doi=10.1201/9780203747124-58&format=pdf |
| Ending Page | 313 |
| Page Count | 5 |
| Starting Page | 309 |
| DOI | 10.1201/9780203747124-58 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2018-05-08 |
| Access Restriction | Open |
| Subject Keyword | Book Name: Mine Planning and Equipment Selection 2000 Mining and Mineral Processing Output Voltage Signal Level Cable Sensor |
| Content Type | Text |
| Resource Type | Chapter |
