I have a closed bore pipe whose width is 6 inches and the pipe goes upto 30 feet deep.
The bore pipe is in a pit whose depth is 6 feet.
I have other drainage pits whose water level is 1 to 2 feet from ground in normal time and 2 to 4 feet in summer time.
But this particular drainage pit whose ground is covered with gravel( broken red brick + river sand ) and which houses closed bore pipe , the water level either overflows or at the ground level.
The case is same even in summer as well.
So my theory is somehow water comes up from the sides of bore-well to the pit or the gravel reduces water pressure and hence less water filtration.
Please note all other pit has clay ground.
So what's the best way to close the bore-well once and for all. should I pour concrete or clay through the pipe or should I pull the pipe out of the ground and pour concrete or clay.I don't want water coming up from 30 feet to the ground at all.
I don't want to cause any differential settlement on the building by just pulling out the pipe and cause the ground earth to close the hole by itself.
Please leave your suggestions
The property is located in a clay ground with high water table. I have some percolation pits on both north and south sides of property.
I'm talking with local authorities to take the water away to the nearest water canal but there's a lengthy process.
Removing the gravel bed , would it help in faster draining of the water ?
How to properly seal the underground borewell pipe so water doesn't seep through to the pit ?
Please find the pic