Comparison between Pingyi Development and Shaft Development

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Since the development method is determined by the main development of the roadway form, in order to choose a technically feasible and economically reasonable development method, it is necessary to understand the advantages and disadvantages of various major development roadways. Here, various major roadways are compared from excavation costs, tunneling speeds, investment amounts, production capacity, transportation costs, and other factors.

(1) The cost of tunneling is low. The cost per metre of tunneling is much lower than that of the shaft, and the maintenance cost is low. The installation facilities in Pingyi are simple, unlike steel shafts, such as steel (wood) beams, tanks, sound and light signals, etc., and there is no need for special pedestrians and corresponding pedestrian production capacity. The total cost (including excavation, masonry and installation costs) is still less than half of the vertical shaft, and the amount of infrastructure construction when using Pingshuo is small; Pingyi does not require complicated downhole yards and complex auxiliary facilities (such as rocking tables) like shafts. Or pallets, cans, etc.); the flat mouth is simple to set up, no need for derricks and hoisting machine rooms; flat rafts do not require as much heavy equipment as shafts, so the investment cost is low.

(2) Pingyi facilities are easy to manage and have good construction conditions. The speed of ploughing is much faster than that of the shaft. Especially in today's rapid progress in the level of mechanization, such as the use of rock drilling rigs and vertical rock-loading machines, the construction conditions and roadway speeds of the tunneling work have been greatly improved, even for large-section roadway excavation. The speed is also unmatched by the shaft (under the same conditions, the laneway speed is 2 to 3 times the shaft construction speed). Therefore, mines developed with Pingyi have short infrastructure time and can be put into production early, which is effective early.

(3) The drainage cost of Pingyi is low. The flat drainage is discharged by the flat drainage ditch (and the shaft needs special drainage facilities), which greatly reduces the drainage cost of the mine.

(4) The cost of transportation equipment is low. In terms of the price of the Ñ„2000 double-barrel winch, the cost is two to three times that of the equivalent transport equipment.

(5) The transportation cost of Pingyi is low. The transportation cost of flat ore per unit length is much lower than that of the shaft, which is generally only 1/3 of the cost.

(6) It is easy to ventilate in the flat (such as a single flat development, in small mines, often with natural ventilation to meet production needs), and simple. Flat ventilation costs (distributed by per ton of ore) are lower than shaft development.

(7) Pingyi production is safe and reliable, transportation is far greater than the transportation capacity of the shaft, and it is easy to manage. Unlike the shaft lifting, there are often accidents such as falling tanks and mine car falling wells.

Because of the development of Pingyi has more significant advantages. Therefore, as far as conditions permit, it should be used as much as possible.

Leg Muscle Training

Leg fitness equipment includes but is not limited to the following:
1. Leg Stretching Machine: This is a type of strength equipment mainly used to exercise the quadriceps and rectus abdominis muscles. one
2. One character horse trainer: used for stretching leg fitness ligaments, suitable for practicing splits and splits. two
3. Fitness elastic ring: used for deep squatting to slim down legs, providing resistance to help exercise leg muscles.
4. Mini stepper: Aerobic exercise equipment suitable for home use and helpful for leg exercises.
5. Sit up assist device: combined with leg tension rope, used for abdominal and fitness equipment.
6. Circular massager: used to clear meridians, relax leg muscles, suitable for yoga and fitness.
7. Stretching board: used for calf stretching, standing fitness and leg compression auxiliary equipment.
8. Kegel Trainer: Used for slimming and beautifying legs, suitable for postpartum repair and pelvic floor muscle training.
9. foam axis roller: used for thin leg fitness and muscle trainer.
10. Circular leg clamp roller: used for slimming and fitness equipment, suitable for home use.
In addition, there are some other types of leg fitness equipment, such as leg massagers, one legged horse trainers, squat trainers, etc., each with its own characteristics and suitable for different exercise needs and scenarios. For example, the inline trainer is particularly suitable for practitioners who need to stretch and strengthen their leg ligaments, while the squat trainer is more suitable for users who need to comprehensively exercise their legs and hips.

Leg press trainer,Seated leg curl &Extension exercise,Plate Loaded Squat,Treadmill

Xuzhou Hongxing Gym Equipment Co., Ltd , https://www.hxyfitness.com