Talk:BEP Shaft Rescue Robot (2022/2023, Q3)

Research Section on Topic

Boy rescued after 100 hours trapped underground in a well https://www.youtube.com/watch?v=Cwqsa9VkTQg

In this case the hole is 100m deep and just 25cm wide.
This posed the problem that no one could actually fit through the hole, only a camera to locate the boy
Again the best solution they used was to dig a parallel hole, which takes very long

Cases of children falling into borewell holes dating back to 2006 up to 2022
Rescue operations could take 9 up to 109 hours, and even then they were not always successful
Children were aged 1.5 up to 9 years old
Hole depths ranged from 55 to 440 ft (16.764 to 134.112 m)
Rescue methods included digging a pit parallel to where the child was trapped using large excavators (up to 40 in one instance).
Saving these children could often require a team consisting of the National Disaster Response Force (NDRF) team army, fire brigade, police and health officials.
Geological obstacles included huge rocks or slab which would have to be broken up in order to dig a pit down to where the child was
Oxygen would be pumped to the holes during rescue missions, but no food could be sent down

After 100 soldiers spent almost 100 hours a 10 year old boy could not be saved after being trapped for 5 days
The hole was 10 inches (25.4 cm) wide and 115 ft (35.052 m) deep
Rescuers attempted to use a 62-foot metal pipe to rescue the boy while oxygen was being pumped into the hole

On average, 70% of rescue operations are unsuccessful
Borewells are wells that can be 100-1500 feet deep and fit pipes of 6-12 inches in diameter in order to extract water to irrigate land
Key factors that affect the rescue mission's chance of success include:
- Incident type
- Location
- Depth and diameter of borehole
- Availability of equipment for digging, oxygen, doctors, ambulances and lights
- Type of soil
Problems with digging a parallel hole and diging a horizontal hole to the hole where the child is:
- Needs large amounts of resources (rescue workers, machines)
- Too time-consuming
- Hard rocks can get in the way of the digging and cause delays

When digging holes, rescue workers have to be very careful to avoid letting the shaft collapse or letting debris fall in

The more people get inovlved and look into the hole where the child is, the more dust gets kicked in accidentally and covers the child
Water can rise at the bottom and make it harder to dig
It can be very hard to accurately dig the horizontal hole to the child
- If the child's location is measured incorrectly from the ground level, the hole could miss them