Question 2: What are the structures of ancient defense facilities in China? Protective equipment for ancient city defense.
"Wu Jing always wants" cloud: "The way to defend the city depends on its failure to come, and it depends on me to wait for it; If it doesn't attack, it depends on me not to attack. " In other words, careful deployment and active defense are king. Fortunately, the ancients in China were good at summing up and accumulating experience, and wrote many "operational treasures" of the Yugoslav capital, which were handed down to later generations and gradually formed a mature "standard" equipment system.
One is to prevent implementation. There are generally three or four artificial obstacles outside the moat, mainly antlers, antlers, horse pits, carbine refusal and so on. Its main purpose is to prevent enemy troops, especially cavalry troops, from approaching.
There are two kinds of potassium: wood potassium and iron potassium. Muxi potassium is panicum miliaceum, and there are hard thorns in the shell. In ancient times, local materials were often used, sprinkled on the enemy's only way and stabbed the enemy's feet. Iron furnace K is naturally an artificial "bionic" weapon with the same function, but stronger and recyclable. In the book Mozi, the use of tribulus terrestris was mentioned many times, and it was pointed out that tribulus terrestris should not only be stored in the city, but also be set at the entrance and exit of the tunnel to prevent the enemy from attacking. Similar to Tribulus terrestris, Tribulus terrestris is mainly deployed in shallow ditches or streams and ponds near cities to prevent the enemy from crossing the river.
Antlers are wooden obstacles that look like antlers. They are divided into branches and trunks, which are several feet long, and one end of them is inserted into the soil for more than a foot. Its purpose is also mainly to stop cavalry, a bit like barbed wire commonly used in modern warfare. This blocking device was invented in the Han Dynasty, and was widely used by Wei Jun in guarding the city during the Three Kingdoms period. There are also horse pits used to delay the action of enemy cavalry, which are generally arranged in a giant or zigzag shape inside and outside enemy roads and gates. The pit bottom is covered with sharpened antlers and bamboo sticks baked by fire, and the pit is covered with straw or grass seedlings to deceive the enemy. There is also a trap device called machine bridge, which is mainly deployed in trenches. It is no different from ordinary temporary bridges at ordinary times, but when the enemy attacks the city, the rafters can be removed. As soon as the enemy steps on the deck, the bridge will overturn immediately.
The other is defensive weapons. If the above-mentioned blocking facilities are only the first line of defense for guarding the city, then the second line of defense, which is also the most important line of defense, is naturally to deal with the defense of Chengtou (moth falling as Jimozi said, or ants attached as Sun Ziyun said) that climbs like ants to siege. Among them, the earliest and most used defensive weapon should be harness. As early as "Zhou Li? Qiu Guan? The book "Job King" contains the relevant records of "Thunder, a sharp weapon for guarding the city and defending the royal family".
Hammer is a defensive weapon, which nails sharp nails on huge wooden posts and then throws them out by gravity, causing lethality. In addition to wood retting, there are also brick retting and mud retting, which are mainly used to replace wood retting when urban resources are scarce, and their lethality will naturally be greatly reduced. Therefore, in the Song Dynasty, the ancients invented recycled wood, mainly including bicycle feet and night fork feet. The foot of the car is to set up a winch from the city, then use the wheel as a tool, throw it out and then use the winch to recover it. The design of hag raft (also known as stay-at-home) is much more ingenious. Wheels are installed at both ends of the raft. Although it is also released by the winch on the city, it greatly reduces the resistance of the anti-whisker nail when it rubs against the city wall, accelerates the recovery speed and improves the natural combat efficiency a lot.
Similar to the function of the ball rolling tool, there is also a defensive weapon called "spike beat". According to the "General Introduction to Martial Arts Classics", the spike racket is nailed to a elm board with a length of five feet (1.57m), a width of four feet and five inches (1.4 1 m) and a thickness of three inches (0.09m), with 2,200 pieces of five inches long and weighing six ounces. When the enemy attacked the city, the soldiers guarding the city used two sets of ropes to lift the racket face perpendicular to the city wall. When the enemy climbed below the racket face, he suddenly put it down, causing the most deadly lethality. As for Md (also known as wooden donkey cart, wooden frame four-wheeled cart, covered with cowhide, which can carry 10 people, just like ancient wooden armored vehicles), the soldiers guarding the city will destroy it with a weapon called iron hitting wood. A knot in one's head leaning against the wood is the iron head of the wood body. The iron head consists of six iron heads, each of which is one foot (about 30 cm) long and looks like a big sharp nail. Destroy the top of the siege vehicle with great impact force, and then throw the rocket out to burn.
There is also an interesting offensive and defensive weapon against siege soldiers, the so-called "flying hook", also known as "iron hook". It consists of a sharp iron hook and a long chain. Because the enemy soldiers who attack the city are wearing iron helmets and armor, they are often inconvenient to move, and they are afraid of arrow stone attacks and dare not look up ... >>
Question 3: What physical defense facilities are there in the square? Nanjing wanda plaza Shopping Center will introduce as many as 15 main stores, integrating various business formats such as department stores, supermarkets, commercial pedestrian streets, fitness, restaurants, cinemas, etc., which can meet the four major needs of the people for shopping, leisure, entertainment and communication. Its complete business format and the number of main stores will create a new business record in Nanjing.
Question 4: In terms of security, what are the main technical and physical defense facilities? : Minsheng | visited 455 times
Question 5: What is the physical defense project of the school? Please have a look at the contents of "three defenses" and you will know.
The "three defenses" construction of campus safety includes three aspects: civil air defense, physical defense and technical defense.
(1) Civil air defense construction.
Civil air defense construction mainly includes establishing and improving internal security organizations and systems, implementing security responsibilities, hiring professional security personnel and security coordinators, and organizing security defense teams, school security teams and faculty emergency teams according to the actual situation of the school.
Improve the school safety management organization. Schools should establish a security department (department, room) as appropriate, equipped with department (department, room) leaders and full-time security officers, responsible for school safety education, management, training, internal security and other work.
Security guards and security assistants are the main forces of campus security patrol and guard. School security personnel and security assistants need to be trained by the public security department of the local public security organ before they can take up their posts. When security guards and security assistants are on duty, they should dress and wear safety signs and equipment.
(2) Physical defense construction.
Physical defense construction mainly includes installing fences, security doors and safety facilities in key parts, areas and places of the school, strengthening and heightening the campus fence, and installing safety facilities such as fire fighting, traffic safety and food hygiene on campus. Schools should equip security personnel with necessary tools, such as duty, protection and arrest. Schools along the expressway should set up warning signs, speed bumps, zebra crossings, speed limit signs, crosswalks and other traffic signs at the school gate.
(3) technical defense construction.
The technical defense construction mainly includes the installation of electronic management systems such as video surveillance, burglar alarm, fire alarm, call for help, access control intercom, etc. in key places and key parts such as school gates, student apartments, faculty residences, financial rooms, laboratories, teaching buildings, libraries, canteens, warehouses, playgrounds, corridors, important entrances and exits, and surrounding complex sections.
Question 6: Mom, what defense facilities did China have in ancient times? It depends on the defensive measures. And the size of the defense facilities. Take an ordinary city as an example:
A moat, a trench outside the city, prevents the enemy from approaching the city wall. Including the sheep and horse wall to protect the moat.
City walls, which are basically defensive facilities, but some are fences and the like.
Suspension bridge can be put away, and the passage between moats.
Turrets, arrow towers, towers and walls are used to shoot arrows at each other.
Wengcheng, a small town outside the city gate, is used to protect the city gate from direct attacks.
The enemy platform, the protruding part of the city wall, forms a convex surface with the surrounding city wall, which makes the enemy soldiers who attack the city wall suffer from many directions.
Question 7: What are the obstacles to military defense facilities? In modern warfare, there is almost no defense except artillery. During World War I, military powers basically built defense lines, but during World War II, only France built the so-called maginot line with all its strength. The speed of France's defeat is the best evidence of the outdated fortifications. The probability of positional warfare is zero.
Since the German Blitzkrieg in World War II, it has promoted the process of military mechanization. This mechanized war is useless to anyone. A carpet bombing can sweep away all the fortresses, and an armored division can capture all the frontal positions. Come to the modern high-tech contest, that kind of trench, that kind of bunker has disappeared, because the concept of deep attack has been deeply rooted in the hearts of the people, beheading tactics are also popular, and positional warfare is not needed. In the Gulf War, Chanrak's armored forces could not even find the enemy, let alone the ground infantry. This kind of war fortification is useless at all.
But I can still introduce you to the fortifications.
Infantry has trench minefield, bunker foxhole, Maoerdong power grid barbed wire triangular pile tunnel; Armored vehicles have anti-tank trenches and Czech hedgehogs; There are minefields on the beach and so on.
Hope to adopt! !
Question 8: What is the property air defense technology? As we all know, civil air defense engineering is a special underground building with protection requirements, and its common classification methods are as follows:
According to the resistance level, the project can be directly called a civil air defense project;
According to wartime purposes, it can be divided into command and communication, personnel shelter, hospitals, ambulance stations, warehouses, garages, etc.
According to the usual use, it can be divided into shopping malls, playgrounds, hotels, theaters (halls), etc.
From the way of engineering construction, it can be divided into excavation engineering and tunnel engineering.
In order to reasonably reflect the project cost, budget quota and project budget are usually classified according to the project construction.
First, dig up the civil air defense project
Digging-opening civil air defense project refers to the civil air defense project that the earthwork of foundation pit is excavated to the design elevation first, then the pouring project is carried out, and then the soil is backfilled. Underground tunnels used in peacetime and wartime should also be classified as excavation projects; For the long-term excavation and filling construction of the cutting of tunnel engineering, from the point of view of valuation quota implementation, in addition to the cutting earthwork, it should also be included in the corresponding excavation and filling engineering quota implementation scope.
Digging civil air defense projects can be divided into single civil air defense projects and affiliated civil air defense projects according to whether there are ground buildings on the upper ground of the project. There is no difference in construction methods between single building civil air defense and attached building projects, but the factors considered in fixed load design are different.
The boundary between affiliated civil air defense works and ground buildings is generally defined by the upper surface of the roof of civil air defense works, and the part above the upper surface of the roof should be included in the calculation of ground buildings.
Due to the time limit or other requirements, the top-down construction method is adopted, that is, the earthwork of the project roof is excavated first, the column body is drilled and poured, then the roof is poured, the ground traffic is restored with soil, and then the underground excavation is carried out under the cover of the roof, and the floor and wall are poured to complete the engineering structure. The civil air defense project constructed by reverse method is between excavation and tunnel engineering in construction method, but it is completely different from tunnel engineering in stress structure type, just a building.
Second, the pit tunnel civil air defense engineering
In terms of construction method, tunnel civil air defense project refers to the civil air defense project constructed by underground excavation (excavation and blasting). Structurally speaking, the pit and tunnel project is a load-bearing structural project composed of the upper covering layer and the supporting (cover) structure of the project.
Pit and tunnel engineering can be divided into tunnel engineering and tunnel engineering according to different types of construction openings.
Tunnel engineering refers to the use of mountains, hills and platforms above the ground to cut and excavate from the natural ground or above, which is divided into vertical shaft engineering and inclined shaft engineering.
According to the geological conditions of the tunnel construction area, it can be divided into earthwork engineering.
Question 9: What equipment is needed for the security work of those security equipment belonging to physical defense? See what you have been punished for, civil air defense, technical defense or physical defense. The main physical defenses are walls, fences, shutter safes, locks, etc. , can be classified into this category; Technical defense is mainly access control.
Question 10: What are the structures of ancient defense facilities in China? Protective equipment for ancient city defense.
"Wu Jing always wants" cloud: "The way to defend the city depends on its failure to come, and it depends on me to wait for it; If it doesn't attack, it depends on me not to attack. " In other words, careful deployment and active defense are king. Fortunately, the ancients in China were good at summing up and accumulating experience, and wrote many "operational treasures" of the Yugoslav capital, which were handed down to later generations and gradually formed a mature "standard" equipment system.
One is to prevent implementation. There are generally three or four artificial obstacles outside the moat, mainly antlers, antlers, horse pits, carbine refusal and so on. Its main purpose is to prevent enemy troops, especially cavalry troops, from approaching.
There are two kinds of potassium: wood potassium and iron potassium. Muxi potassium is panicum miliaceum, and there are hard thorns in the shell. In ancient times, local materials were often used, sprinkled on the enemy's only way and stabbed the enemy's feet. Iron furnace K is naturally an artificial "bionic" weapon with the same function, but stronger and recyclable. In the book Mozi, the use of tribulus terrestris was mentioned many times, and it was pointed out that tribulus terrestris should not only be stored in the city, but also be set at the entrance and exit of the tunnel to prevent the enemy from attacking. Similar to Tribulus terrestris, Tribulus terrestris is mainly deployed in shallow ditches or streams and ponds near cities to prevent the enemy from crossing the river.
Antlers are wooden obstacles that look like antlers. They are divided into branches and trunks, which are several feet long, and one end of them is inserted into the soil for more than a foot. Its purpose is also mainly to stop cavalry, a bit like barbed wire commonly used in modern warfare. This blocking device was invented in the Han Dynasty, and was widely used by Wei Jun in guarding the city during the Three Kingdoms period. There are also horse pits used to delay the action of enemy cavalry, which are generally arranged in giant or Asian shapes inside and outside enemy roads and gates. The pit bottom is covered with sharpened antlers and bamboo sticks baked by fire, and the pit is covered with straw or grass seedlings to deceive the enemy. There is also a trap device called machine bridge, which is mainly deployed in trenches. It is no different from ordinary temporary bridges at ordinary times, but when the enemy attacks the city, the rafters can be removed. As soon as the enemy steps on the deck, the bridge will overturn immediately.
The other is defensive weapons. If the above-mentioned blocking facilities are only the first line of defense for guarding the city, then the second line of defense, which is also the most important line of defense, is naturally to deal with the defense of Chengtou (moth falling as Jimozi said, or ants attached as Sun Ziyun said) that climbs like ants to siege. Among them, the earliest and most used defensive weapon should be harness. As early as "Zhou Li? Qiu Guan? The book "Job King" contains the relevant records of "Thunder, a sharp weapon for guarding the city and defending the royal family".
Hammer is a defensive weapon, which nails sharp nails on huge wooden posts and then throws them out by gravity, causing lethality. In addition to wood retting, there are also brick retting and mud retting, which are mainly used to replace wood retting when urban resources are scarce, and their lethality will naturally be greatly reduced. Therefore, in the Song Dynasty, the ancients invented recycled wood, mainly including bicycle feet and night fork feet. The foot of the car is to set up a winch from the city, then use the wheel as a tool, throw it out and then use the winch to recover it. The design of hag raft (also known as stay-at-home) is much more ingenious. Wheels are installed at both ends of the raft. Although it is also released by the winch on the city, it greatly reduces the resistance of the anti-whisker nail when it rubs against the city wall, accelerates the recovery speed and improves the natural combat efficiency a lot.
Similar to the function of the ball rolling tool, there is also a defensive weapon called "spike beat". According to the "General Introduction to Martial Arts Classics", the spike racket is nailed to a elm board with a length of five feet (1.57m), a width of four feet and five inches (1.4 1 m) and a thickness of three inches (0.09m), with 2,200 pieces of five inches long and weighing six ounces. When the enemy attacked the city, the soldiers guarding the city used two sets of ropes to lift the racket face perpendicular to the city wall. When the enemy climbed below the racket face, he suddenly put it down, causing the most deadly lethality. As for Md (also known as wooden donkey cart, wooden frame four-wheeled cart, covered with cowhide, which can carry 10 people, just like ancient wooden armored vehicles), the soldiers guarding the city will destroy it with a weapon called iron hitting wood. A knot in one's head leaning against the wood is the iron head of the wood body. The iron head consists of six iron heads, each of which is one foot (about 30 cm) long and looks like a big sharp nail. Destroy the top of the siege vehicle with great impact force, and then throw the rocket out to burn.
There is also an interesting offensive and defensive weapon against siege soldiers, the so-called "flying hook", also known as "iron hook". It consists of a sharp iron hook and a long chain. Because the enemy soldiers who attack the city are wearing iron helmets and armor, they are often inconvenient to move, and they are afraid of arrow stone attacks and dare not look up ... >>