Until now, some studies showed that major source of ore-forming materials come from wall rock or upper mantle.

目前，有关研究认为此类矿床成矿物质主要来源于矿床的围岩或上地幔。

Monitoring shows that the tunnel wall rock is stable and the support is safe, which demonstrates it an effective method.

监测表明：隧道围岩处于稳定状态，支护受力处于安全状态，说明该方法行之有效。

At the same time, the reasonable estimate about the stability of wall rock and timbering parameter supplies designers and builders with the beneficial reference.

同时对围岩稳定性和支护参数进行了合理性评价，为设计和施工单位提供了有益的参考意见。