| 摘要 |
<p>"Improvements relating to the closing of mineshafts" The present specification discloses a method and apparatus for use in closing a mineshaft which is surrounded by soft ground. The method uses elongate support members which each comprise an elongate main member with a stabiliser leg depending from one end region and carrying a spreader plate. At the other end of the main member there is a gripping section. In use the support members are located generally radially of the mineshaft with the stabiliser leg extending down the mineshaft and the spreader plate engaging the wall of the mineshaft. In this position the gripping section is embedded in the surrounding terrain. The support members then extend over the mineshaft and covering means in the form of concrete can be located on the support members to thus close the shaft; obviating collapse of the shaft walls.</p> |
