To solve the problem of support parameter for surrounding rock of high ground stress roadways in No.75 Coal Industry Co., Ltd., comprehensive research methods such as field measurement, laboratory experiment, theoretical analysis and numerical simulation were adopted in this paper. The distribution law of ground stress in roadway surrounding rock, geological structure characteristics of surrounding rock and physical and mechanical parameters of surrounding rock were measured. The failure modes and distribution characteristics of the plastic zone of roadway surrounding rock were studied, and a support parameter design scheme for surrounding rock of high ground stress roadways was put forward. The research results showed that the high ground stress was mainly dominated by horizontal stress, the ratio of the maximum horizontal principal stress to the vertical stress was about 1.43 times, and the ratio to the minimum principal stress was about 1.54 times. The roadway roof was mainly a composite roof of medium-hard to hard rock composed of sandy mudstone and medium-grained sandstone. Multiple fracture zones existed in the shallow part of the roof at a depth of 1.09~2.19 m, and multiple transverse fractures and fracture zones were found in the deep part of the roof at depths of 2.80 m, 3.73 m, 4.22 m and 4.86 m, with moderately developed fractures. A small amount of tensile failure occurred in the roadway roof, with a maximum failure depth of 1.10 m. Shear failure was dominant in the two sides of the roadway, and tensile failure also existed in the upper part of the roadway sides, with a maximum failure depth of 0.75 m. Tensile failure was the main form of failure in the floor, and shear failure existed at the two bottom corners, with a maximum failure depth of 1.3 m. After the support design scheme was adopted, field practice showed that the support effect of roadway surrounding rock was good.
佟化洲. 高水平地应力区域巷道围岩支护参数研究[J]. 煤炭与化工, 2026, 49(8): 28-33.
Tong Huazhou. Study on support parameter of roadway surrounding#br#
rock in high level ground stress area. CCI, 2026, 49(8): 28-33.