In situ stress is the direct cause of roadway deformation and failure in the process of deep mining activities. The measured data of in situ stress in the Shuanghe coal mine show that the maximum principal stress is 44.94~50.61 MPa, and the maximum principal stress direction is near horizontal direction, which belongs to tectonic stress field. The maximum horizontal principal stress is 1.66~1.86 of the vertical stress. The horizontal principal stress controls the deep stress field. According to the measured data of in situ stress, the high-strength prestress bolt and cable collaborative support form is designed in the Shuanghe coal mine. Based on the stress field research of bolt and cable, the optimal prestress ratio of bolt and cable is proposed as 3. When the prestress ratio of bolt and cable is constant, the smaller the length ratio of bolt and cable is, the better the effect of prestressed field formed by cooperative support is. The results are applied to the support design of the mining roadway in the Shuanghe coal mine. Through the field monitoring test results, it is found that the maximum roof subsidence is 86 mm, the maximum floor deformation is 52 mm, and the maximum deformation of two sides is 125 mm. The surrounding rock control effect of the roadway is good, and the surrounding rock deformation conforms to the engineering technology standard requirements. The research results of this paper can provide some reference for the surrounding rock support of high ground stress mining roadway under similar conditions.

中文翻译：

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深井原位应力测量及围岩控制技术研究

地应力是深部开采活动过程中巷道变形破坏的直接原因。双河煤矿地应力实测数据表明，最大主应力为44.94~50.61 MPa，最大主应力方向接近水平方向，属于构造应力场。最大水平主应力为竖向应力的1.66~1.86。水平主应力控制深部应力场。根据地应力实测数据，在双河煤矿设计了高强度预应力锚索协同支护形式。基于对锚索应力场的研究，提出锚索最优预应力比为3。当锚索预应力比不变时，锚索长度比越小，协同支护形成的预应力场效果越好。研究结果应用于双河煤矿巷道支护设计。通过现场监测测试结果发现，顶板最大下陷量为86 mm，底板最大变形量为52 mm，两侧最大变形量为125 mm。巷道围岩控制效果好，围岩变形符合工程技术标准要求。本文的研究成果可为类似条件下高地应力开采巷道的围岩支护提供一定的参考。研究结果应用于双河煤矿巷道支护设计。通过现场监测试验结果发现，顶板最大下陷量为86 mm，底板最大变形量为52 mm，两侧最大变形量为125 mm。巷道围岩控制效果好，围岩变形符合工程技术标准要求。本文的研究成果可为类似条件下高地应力开采巷道的围岩支护提供一定的参考。研究结果应用于双河煤矿巷道支护设计。通过现场监测试验结果发现，顶板最大下陷量为86 mm，底板最大变形量为52 mm，两侧最大变形量为125 mm。巷道围岩控制效果好，围岩变形符合工程技术标准要求。本文的研究成果可为类似条件下高地应力开采巷道的围岩支护提供一定的参考。巷道围岩控制效果好，围岩变形符合工程技术标准要求。本文的研究成果可为类似条件下高地应力开采巷道的围岩支护提供一定的参考。巷道围岩控制效果好，围岩变形符合工程技术标准要求。本文的研究成果可为类似条件下高地应力开采巷道的围岩支护提供一定的参考。