论文部分内容阅读
在软岩巷道建设过程中,软岩巷道失稳是影响建设安全的重要问题。通过分析巷道围岩与巷道支护之间的相互作用,经过力学计算,得出软岩巷道失稳的主要原因。经过理论分析与实例论证,软岩巷道的正确支护的设计前提是建立稳定的支护,在稳定的支护作用下使周围围岩的积蓄能可以最大限度地释放,另外,使以变形形式转换的工程力达到最大值,这样巷道围岩的自承力也能趋近于最大值,这时巷道的支护力可以趋近于最小值。
During the construction of soft rock roadway, the instability of soft rock roadway is an important issue that affects the construction safety. By analyzing the interaction between surrounding rock and roadway support, the main reason for the instability of soft rock roadway is obtained through mechanics calculation. After theoretical analysis and case demonstration, the premise of the correct support of soft rock roadway is to establish a stable support, which can maximize the release of surrounding rock mass under the function of stable support. In addition, The converted engineering force reaches the maximum, so that the self-bearing capacity of the surrounding rock of the roadway can also approach the maximum value. At this moment, the support force of the roadway can approach the minimum value.