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为研究隧道锚碇围岩的力学特性,以几江长江大桥隧道锚碇项目为例,按照相关技术规范规程的要求,详细地归纳和总结了隧道锚碇围岩力学特性试验研究的技术路线和要点,给出了工程区侏罗系上统遂宁组(J3sn)泥岩和砂岩的力学参数试验值与建议值,为重庆地区类似地质条件下工程岩体力学参数提供了参考值,为开展悬索桥隧道锚碇围岩力学特性试验研究提供了试验方法上的参考。
In order to study the mechanical characteristics of surrounding rock of tunnel anchorage, taking the anchorage project of the Yangtze River Bridge in Jinjiang River as an example, the technical route of experimental research on mechanical properties of surrounding rock of tunnel anchorage is summarized and summarized in accordance with the requirements of the relevant technical codes and regulations. The experimental and proposed values of the mechanical parameters of mudstone and sandstone of the Jurassic Upper Suining Formation (J3sn) in the engineering area are given, which provide reference values for the mechanical parameters of the rock mass under similar geological conditions in Chongqing. In order to develop the suspension bridge tunnel The experimental research on the mechanical properties of anchoring rocks provides a reference for the test methods.