First, the main characteristics of volleyball match
1, mass
The volleyball court is simple in equipment and easy to master the rules of the game. It can not only compete and train on the court, but also exercise in the general open space. The amount of exercise can be large or small, which is suitable for people of different ages, genders, physiques and training levels. ? [6]?
2. Comprehensive
According to the rules, every player should rotate his position, not only to smash and block in the front row, but also to defend and meet in the back row. It is required that each player must master all skills and be competent in all positions.
3. Skills
According to the rules, the ball cannot land in the game, and it is not allowed to hold the ball or repeatedly hit it. The short hitting time and changeable hitting space determine the high technology of volleyball.
Step 4 confront
In volleyball match, the attack and defense conversion between the two sides is always carried out in fierce confrontation. In high-level competitions, the focus of confrontation is online deduction. In a game, it often takes several rounds to win a point. The higher the level of competition, the more intense the confrontation.
5. Duality
Volleyball is an event in which many skills can score and lose points, which is more prominent in the deciding game. So every technology has the dual nature of attack and defense. Therefore, technology is required to be both aggressive and accurate.
Second, the site facilities
1, site requirements
The volleyball competition venue is a rectangle of 18m× 9m, with at least 3m open space around, and no obstacles at least 7m above the venue. For FIVB world-class and official competitions, the barrier-free zone is at least 5 meters away from the sideline and 8 meters away from the end line, and the barrier-free competition space is at least 12.5 meters away from the ground without obstacles.
Draw a line in the middle of the court and divide the court into two equal areas. All lines are 5 cm wide.
2. Net
There is a net on the center line of the site. The net is 1 m wide and 9.50m long, and it is hung on two posts outside the stadium. The height of women's net is 2.24 meters, and that of men's net is 2.43 meters.
At the junction of the two ends of the net perpendicular to the sideline and the center line, there are 5 cm wide sign belts respectively, and a sign pole with a length of 1.80 m is connected to the outside of the sign belt.
Step 3: Ball
The circumference of the ball is 65 ~ 67 cm, the weight is 260 ~ 280 g, and the air pressure is 0.40 ~ 0.45 kg/cm2.
Third, the competitive process.
1, preparation before the game
The first referee presides over the lottery, and first chooses the right to serve and the ball area.
2, the game start process and stop:
The first referee will stand at the end line of his own field after blowing the whistle, and stand in the original position when blowing the whistle again (the position table filled out before the game).
3. Score:
A. After one side serves, the other side makes a catch mistake, fouls or the ball falls into the opponent's court, that is, the server scores and continues to serve;
B. If the server serves illegally or out of bounds, the opponent will score and change the service.
4. Suspension and substitution:
Each team has two timeouts and six substitution opportunities in each game. (required when making dead balls)
(1) time-out: each team has two time-outs in each game; There is a technical pause every 8 minutes in the regular competition.
(2) Substitution:
The main player can only quit the game once, and when he plays in the same game again, he can only return to the game to replace him.
(2) Substitutes can only play once in each game and can replace any main players. The same game can only be replaced by the player he replaces.