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An experimental method for simulating fully mechanized excavation of roadway

An experimental method and roadway technology, applied in the field of basic research of similar simulation experiments, can solve the problem that there is no mature and feasible method for cutting sequence, and achieve the effect of easy implementation and simple operation

Active Publication Date: 2019-06-28
CHINA UNIV OF MINING & TECH
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Problems solved by technology

As an important method and means to study the general laws of underground engineering (such as mining), similar simulation experiments are widely used at home and abroad, but there is still no mature and feasible method for simulating the roadway excavation process, especially the cutting sequence

Method used

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  • An experimental method for simulating fully mechanized excavation of roadway
  • An experimental method for simulating fully mechanized excavation of roadway

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the embodiment in the accompanying drawings:

[0021] The experimental method of simulation roadway mechanized excavation technology of the present invention, concrete implementation steps are as follows:

[0022] a. Based on the three laws of similarity, calculate the stress similarity ratio of the roadway fully mechanized mining face model, and then calculate the uniaxial compressive strength and uniaxial tensile strength of each coal layer in the model, and determine the roadway with the help of the similar material ratio table Similar materials and their proportions used in each coal seam of the fully mechanized mining face model;

[0023] b. Determine the model size of roadway 5 according to the geometric similarity ratio: length * width * height, select the experimental frame (1) that matches the size of roadway 5;

[0024] c. According to the model size of the roadway fully mechanized mini...

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Abstract

The invention discloses an experiment method for simulating a roadway fully-mechanized excavating process and belongs to the field of similar simulated experiment base research. When a model is paved at a roadway position, a blocky paraffin block body with the size the same as that of the designed roadway is pre-buried, and a heating hole and a flow guide hole are formed in the block paraffin block body according to the heat energy radiation range of a heating stick and the heated melting condition of the blocky paraffin; a heating hole and a flow guide hole the same as those of the blocky paraffin are formed at the position, corresponding to the roadway, of a cover plate of an experiment rack, and the heating stick and a flow guide pipe with a heating layer are sequentially embedded into the holes and are numbered; in the experiment process, heating is controlled selectively according to the serial number of the heating stick, so that the melted blocky paraffin flows out of the nearest flow guide pipe with the heating layer, and roadway simulated excavation is realized under the conditions of different cutting sequences and different cutting routes. The experiment method is suitable for simulating a roadway fully-mechanized excavating process, accords with product practice, and is easy to operate and easy to implement.

Description

technical field [0001] The invention is applicable to the field of basic research of similar simulation experiments, and relates to an experimental method for simulating the fully mechanized excavation process of roadways. Background technique [0002] With the steady growth of my country's economy, the demand for coal resources is increasing day by day, and the significance of efficient mining is becoming more and more significant. Excavation is the first process of coal mining, and excavation coordination is the key to ensure efficient coal mining. The engineering volume of rock roadway excavation generally accounts for 50% of the total engineering volume of roadway excavation, and accounts for about 25% of the total mine engineering volume. Compared with coal roadway, rock roadway excavation speed is relatively slow. becomes more important. As an important method and means to study the general laws of underground engineering (such as mining), similar simulation experime...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 季明郭红军陈凯张益东程亮张明磊张宗良郭文豪赵永平张弦郑讴阳
Owner CHINA UNIV OF MINING & TECH
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