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

A technology for potential safety hazards and underground chambers, which is applied in special data processing applications, instruments, electrical digital data processing, etc., and can solve problems such as difficulty in identifying potential safety hazards and low efficiency

Pending Publication Date: 2021-05-07
BEIJING RES INST OF URANIUM GEOLOGY
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  • Description
  • Claims
  • Application Information

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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

Method used

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

Examples

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Embodiment

[0048] The surrounding rock of an underground project is mainly granite. There is little vegetation on the surface, so it is easy to carry out crack investigation. The main structure of the underground project is mainly composed of inclined shaft and horizontal roadway at the bottom of the shaft. The total length of the inclined shaft is about 146.19m, and the inclination angle is 20°. The buried depth is 50m, and all roadways are not supported.

[0049] A method for simulating the investigation of potential safety hazards in surrounding rocks of underground chambers, the method comprising the following steps:

[0050] Step 1: Collect 3D fracture network simulation sample data. Specifically, the mechanical parameters of the rock mass were obtained through laboratory tests. The cohesion and internal friction angle of the rock mass in the research area were 1.86MPa and 30.4° respectively, and the density of the rock mass was 2.55g / cm3. The collected crack data were recorded in...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/23G06F119/14
CPCG06F30/13G06F30/23G06F2119/14
Inventor 李冬伟刘健马利科成功李炜强
Owner BEIJING RES INST OF URANIUM GEOLOGY
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