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本文分两部份:一是矸石充填试验。通过夹壁模拟试验,获得采空矿场充填后夹壁强度提高的具体数据。厚夹壁(厚10米以上)充填满时强度可提高9%,充半满时提高0～1%;簿夹壁(厚10米以下)充满时强度可提高21%,充半满时提高14%。因此,建议厚夹壁的空场可以不充,薄夹壁的空场只需充半满。二是矸石充填作用的讨论。通过模拟试验与现场实际的观察,矸石充填有提高夹壁强度,约制岩体移动,防止冲击地压等作用,但其主要作用是减少空体,约制岩体移动范围,把可能发生的大面积地压转化为局部地压,或者消灭地压。
This article is divided into two parts: First, waste rock filling test. Through the wall-clamping simulation test, the concrete data of the increase of the wall strength of the mined-out mine after filling is obtained. Thick wall (more than 10 meters thick) filled with full strength can be increased by 9%, filling half full increase of 0 to 1%; book folder wall (thick 10 meters below) when full strength can be increased by 21% full charge half full 14%. Therefore, it is recommended that the empty wall of the thick wall can not be filled, and the empty wall of the thin wall needs only to be full and half full. Second, the role of waste rock filling discussion. Through the simulation test and the actual observation in the field, the filling of gangue can improve the strength of sandwich wall, restrict the movement of rock mass and prevent the impact of ground pressure. However, its main function is to reduce the empty body and restrict the moving range of rock mass, Large area pressure into local pressure, or eliminate ground pressure.