关键词: 矿井建设, 超长距离斜井, TBM, 围岩支护

Abstract: Unmanned, mechanized, and intelligent are important directions for the current development of mine construction. The full-face tunnel boring machine (TBM) has advantages such as high mechanization, automation, and high excavation efficiency. It has gradually been applied to coal mine inclined shafts and rock tunnel excavation projects. The influence of the geological characteristics of the Luohe Formation, which the Kekeng Coal Mine inclined shaft passes through, on the stability of the surrounding rock of the starting chamber for the inclined shaft TBM was analyzed. Field anchor pull force tests, in-situ strength tests, and single-element support shoe simulation tests were conducted and analyzed. A reinforcement plan for the surrounding rock of the starting chamber for long inclined shaft TBM and TBM support shoe was researched and proposed. The research results show that the anchor pull force of the surrounding rock of the starting chamber for the Luohe Formation can reach more than 100 kN; the average compressive strength of the tested section of the Luohe Formation surrounding rock is 23.1 MPa; when the compressive stress on the supported shoe reaches 33 MPa, there is no collapse or cracking of the surrounding rock. Based on the on-site test results, the rein-forcement of the top pipe shed of the TBM starting chamber, the top anchor net spray support in the excavation section, and the TBM advancing support scheme for entering the chamber were analyzed and proposed. Industrial experiments of direct chamber excavation using TBM in the Luohe Formation have verified the safety of the reinforcement tech-nology for the surrounding rock of the TBM starting chamber in the Luohe Formation. The research results can provide references for the design and construction of similar geological inclined shaft TBM direct chamber excavation schemes.