Research On Bolt-net-tightwire Compound Support Of Soft Rock Coal Roadway Under High Stress And At The Complex Condition

The control of soft rock roadway stability, especially the control of soft rock coal roadway under the high stress is always one of the difficult problem. With the mine scale enhance and the mine toward deep level, the problem of the timbering and the maintenance of soft rock roadway is becoming more aculeated. It is the key of the mine toward deep leve and the safety mine Whether can we solve the problem of soft rock roadway timbering. In theory and in practice, soft rock timbering is compound form on the whole, which sometimes cost large or can't reach expect purpose. It is no doubt worth studying that how to make good use of bolt-net-tightwire compound timbering in soft roke roadway, in that this compound timbering is advanced and economical.Therefore, the paper discussed soft rock speciality and soft rock roadway stability control principle by system,studied bolt-net-tightwire compound timbering based on coupling meaning detailedly. With the example of the "island" coalface roadway of HongYang thirdth mine, meantime RFPA is used to study bolt-net-tightwire compound timbering of soft rock coal roadway under high stress and at the complex condition and the concept of dissymmetry support is brought forward in a creative way, at last a series of conclusion and advice is achieved.