An underground roadway surrounding rock weathering simulation device and method
A technology of underground roadway and simulation method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of increased weathering cracks, large temperature difference in roadway ventilation, weakening the strength of surrounding rock and bearing structure, etc., so as to shorten the time of simulation consumption, The effect of shortening the research cycle and high data accuracy
A technology of underground roadway and simulation method, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of increased weathering cracks, large temperature difference in roadway ventilation, weakening the strength of surrounding rock and bearing structure, etc., so as to shorten the time of simulation consumption, The effect of shortening the research cycle and high data accuracy
CN109444031BActive Publication Date: 2020-03-20CHINA UNIV OF MINING & TECH
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[0026] An example of the present invention will be further described below in conjunction with accompanying drawing:
[0027] Such as figure 1 As shown, the underground roadway surrounding rock weathering simulation device of the present invention includes a constant temperature system, a constant temperature and humidity system, a weathering system, a ventilation system, and a data acquisition system, wherein the constant temperature system, the constant temperature and humidity system, the weathering system, and the ventilation system pass The ventilation pipelines 4 are connected in series in sequence, and the ventilation pipeline 4 is provided with a heat insulation sleeve 5. The serpentine ventilation pipe 2 and the ventilation pipeline 4 are made of transparent PE plastic, and the heat insulation sleeve 5 is made of airgel felt. Data collection The system is connected to the weathering system;
[0028] The constant temperature system includes a constant temperature box ...
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The invention discloses a surrounding rock weathering simulation device and a surrounding rock weathering simulation method for underground roadways, and is applicable to weathering simulation of easily-weathered roadway surrounding rock in mine shafts. The surrounding rock weathering simulation device comprises a constant temperature system, a constant temperature and humidity system, a weathering system, a ventilation system and a data acquisition system. The surrounding rock weathering simulation method includes putting a test piece simulating the surrounding rock of the roadways into a sealing box and fastened, sequentially turning on the constant temperature system and the constant temperature and humidity system, setting the temperature and the humidity as standard values specified by an experiment, and turning on the data acquisition system; turning on a negative-pressure fan to start the weathering simulation experiment, wherein the data acquisition system monitors temperature,humidity and wind speed of gases flowing into the test piece in real time, and observes and records surface weathering changes at different time through a camera in real time. The surrounding rock weathering simulation device and the surrounding rock weathering simulation method have the advantages of visually-observed detection result, high precision, modularized design, easiness in operation and low cost.
Description
technical field [0001] The invention relates to an experimental device and method for simulating the weathering of the surrounding rock of an underground roadway, and is especially suitable for the simulation research on the weathering of the surrounding rock of the easily weathered roadway in the mine. Background technique [0002] The geological conditions of my country's coal mines are complex, and weathered roadways are widely distributed. The underground air humidity is high, the roadway wind speed is high, and the roadway ventilation temperature difference is large in winter and summer. Long-term weathering will lead to the destruction of the original structure and structure of the roadway surrounding rock, secondary changes in mineral composition, and the porosity of the coal rock mass. In addition, due to the influence of excavation and other engineering disturbances, the surrounding rock is loosely broken and expanded to a depth of 6-10m, which greatly weakens the s...
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Patent Timeline
20 Mar 2020
Publication
CN109444031B
- IPC
- G01N17/00
- CPC
- G01N17/002
- Inventors
- 钱德雨; 金鑫