| 摘要 |
<p>The present invention provides an apparatus for providing support to, and/or measuring the stress present in a potentially unstable structure, such as the roof of a coal or other underground mine, or a rock mass. The apparatus is an instrumented cable comprising: (a) a center wire (12) having a length which is greater than its width; (b) a plurality of stress measuring devices (14) attached along the length of the center wire; (c) a forming material (16) which is formed around the center wire and the stress measuring devices; (d) a plurality of noncenter wires (18) having a length which is greater than their width, and being wrapped around the length of the center wire, the stress measuring devices and the forming material; and (e) a device for collecting data (20) produced by the stress measuring devices, which is connected with the stress measuring devices. Advantageously, the apparatus measures the stress placed thereon when inserted into the potentially unstable structure at more than one location along the length thereof, may be spun into a rock mass without damaging the stress measuring devices (or other components of the apparatus) and may be grouted into the potentially unstable structure with a variety of different grouts.</p> |
