6 requirements for the excavation and safety of th

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Roadway excavation and safety requirements 6 The process of excavating tunnels (roadways) in the ore body or surrounding rock in order to explore and mine deposits is called roadway excavation

first, the classification of mine roadways

there are many kinds of mine roadways, and the classification methods are as follows: first, he also suggested that according to the mutual position relationship between the center line of the roadway and the horizontal plane; 2、 It is the function or use of roadway

(I) according to the first classification method, it can be divided into vertical roadway, horizontal roadway and inclined roadway

1 The center line of the vertical roadway is vertical to the horizontal plane, including:

(1) the shaft

has an outlet directly to the surface, and the vertical roadway used to lift ore, personnel, materials, equipment or ventilation, drainage and lower filling materials is called the shaft

(2) blind shaft

the function of blind shaft is the same as that of shaft, but there is no outlet directly to the surface. It connects the lower part of horizontal roadway with the upper part of horizontal roadway for transportation or to reduce the amount of ore deposit development work and other purposes

(3) exploratory well

the project of digging from the surface for prospecting is called exploratory well. The exploratory shaft is shallower than the shaft and has a small section. It can also be used for ventilation or filling

(4) patio

patio is a small shaft connecting two adjacent upper and lower horizontal roadways. It is generally not directly connected to the surface, and is mainly used to lower ores, materials, equipment, tools, ventilation, pedestrians and exploration

2. Horizontal roadway

the roadway in which the oil absorption center line is parallel to the horizontal plane, including:

(1) adit

adit, which has a horizontal roadway leading to the surface outlet. Only when it is used to develop ore deposits and transport qualified environment can the accuracy of the test results of the concrete pressure testing machine be guaranteed. Ore transportation, ventilation, drainage, fixture water with a small experimental force, pedestrians, etc. There are horizontal tunnels at both ends, which are connected with the surface, also known as tunnels

(2) vein roadway

vein roadway is a horizontal roadway that passes through the ore body vertically or obliquely and is excavated in the surrounding rock or the original ore body with an exit directly to the surface

3. Inclined roadway

in which the center line intersects the horizontal plane obliquely, including inclined shaft, inclined raise and ore drawing pass

various roadways in the mine are shown in Figure 5-3

(II) according to the second method, it is divided into exploration roadway, production roadway and mining preparation roadway

1 Exploration roadway exploration roadway is a variety of mine roadways excavated to explore ore bodies and ore reserves, understand geological structures, deposit burial conditions, or obtain accurate geological data

2. Production roadway

production roadway refers to the roadway excavated for transportation, ventilation, drainage and pedestrians between the surface and the ore body in order to develop the deposit. There are adits, shafts, inclined shafts, stone gates, shaft bottom parking lots and transportation adits outside the vein. The roadway development mode is shown in Figure 5-4

3. Mining preparation roadway

mining preparation roadway is a roadway excavated to prepare for mining. It divides the deposit into stages and mining areas (ore blocks), including main vein roadway, vein crossing roadway, mining preparation raise, mining pedestrian passage, etc

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