A method for simulating underground chamber surrounding rock potential safety hazard investigation

Abstract

The invention belongs to the field of underground engineering potential safety hazard investigation, and particularly relates to a method for simulating underground chamber surrounding rock potential safety hazard investigation, which comprises the following steps: step 1, collecting three-dimensional fracture network simulation sample data; 2, constructing a three-dimensional fracture network preliminary model according to the data acquired in the step 1; 3, correcting the three-dimensional fracture network model obtained in the step 2; 4, excavating an underground chamber in the model to analyze the stability of the surrounding rock; 5, determining a dangerous area of the chamber; and 6, subjecting the potential safety hazards of the surrounding rock of the chamber to emphasized troubleshooting. According to the invention, the stability condition of the surrounding rock of the underground chamber can be intuitively known, a dangerous area is searched, a reference basis is provided for hidden danger investigation in the operation and maintenance period of underground engineering, and the method is a great progress in the hidden danger investigation technology of the underground chamber.

Description

technical field [0001] The invention belongs to the field of investigation of safety hidden dangers in underground engineering, and in particular relates to a method for screening safety hidden dangers of surrounding rocks in simulated underground chambers. Background technique [0002] The combination and development of structural planes in the surrounding rocks of underground chambers are the key to the stability of chambers. In addition to the roof drop and slabs caused by the excavation of the chamber, the unstable rock mass in the surrounding rock may fall during the maintenance period of the underground chamber, resulting in safety accidents. Such incidents are often unpredictable and sudden. They are common safety accidents in underground engineering in my country and are also the top priority in underground engineering safety management. At present, in underground engineering, the method of "knocking on the side and asking the roof" is often used to eliminate the sa...

AI Technical Summary

Problems solved by technology

At present, in underground engineering, the method of "knocking on the side and asking the roof" is often used to eliminate the safety hazards of the surrounding rocks of the underground chambers. However, this method needs to conduct a comprehensive investigation of all the exposed surrounding rocks of the underground chambers. The effect requires high practical experience of operators, and it is difficult to identify potential safety hazards that are not properly checked

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