Study on Deformation Mechanism of Deep Soft Rock Roadway in Daqiang Coal Mine of Tiefa Coal Industry

Abstract

As soft rock roadway projects have the characteristics of large deformation, and earth pressure,difficult to support, and all that make shallow form of support can not meet the needs of the soft rock roadway, the main reason is that the soft rock roadway has compound deformation mechanism, which makes that the single support physical science features and rock mechanical properties can not be coupled, and a key part of the soft rock roadway begins to undermine firstly, which leads to the instability of the entire supportive system. Therefore, identifying the soft rock roadway compound deformation mechanism and transforming the compound into a single type are the key technologies to solving soft rock problems. This paper utilized the deep soft rock roadway of Daqiang Coal Mine of Tiefa Coal Industry as engineering background, systematically studied the mechanical characteristics of the soft rock roadway engineering geology, deeply analyzed the mineral properties of surrounding rock, and proposed the soft rock roadway’s compound deformation mechanism and conversion process of transforming compound into single deformation mechanism, providing important theoretical basis for designing .Daqiang Coal Mine deep soft rock roadway