Borewell Problem -Sand water entering racket in Borewell

Need all Your help in identifying the Problem and help to fix it Permanently

Problem:
borewell done upto 325 ft in hard rock. Good Yield in the borewell. pipes were lowered upto 300 ft. after 1 month fine sand\river sand entered racket and pumping was not possible, then pipes removed for 20ft and lowered again. water started coming for about 45 days. same problem occured again and the pipes were lifted and the borewell was flushed and pipes was again lowered. after two days of pumping the same problem occured again

Need all Your help in identifying the Problem and help to fix it Permanently

Problem:
borewell done upto 325 ft in hard rock. Good Yield in the borewell. pipes were lowered upto 300 ft. after 1 month fine sand\river sand entered racket and pumping was not possible, then pipes removed for 20ft and lowered again. Clean water started coming for about 45 days. Again same problem occured  and the pipes were lifted and the borewell was flushed and pipes was again lowered. after two days of pumping the same problem occured again.
Any of the plumbers has no idea on where the sand enters into racket

Detailed Information of Pump:
2 HP Compressor Pump

The 300ft piping you talk about and removal of 20ft pipes mentioned seems to be the delivery piping coming out of the pump, isnt it?

I guess the problem is because of the loose soil nature of the land, due to which the bore wall collpases whenever it rains or when water is pumped for long hrs.

Please check the depth for which casing is done.

In and around Chennai, this problem is common and its recommended to have casing pipe erected to the depth to which motor is going to be submersed.

In your case, my suggestion would be to put casing pipe till 300ft and lower the motor to 290ft.

This should solve your problem.

Regards

The 300ft piping you talk about and removal of 20ft pipes mentioned seems to be the delivery piping coming out of the pump, isnt it?

I guess the problem is because of the loose soil nature of the land, due to which the bore wall collpases whenever it rains or when water is pumped for long hrs.

Please check the depth for which casing is done.

In and around Chennai, this problem is common and its recommended to have casing pipe erected to the depth to which motor is going to be submersed.

In your case, my suggestion would be to put casing pipe till 300ft and lower the motor to 290ft.

This should solve your problem.

Regards

Also,

Since you say you use a compressor, weak bore walls are susceptible as compressor pumps in high air pressure inside the borewell to lift the water up.

And since you say the borewell is good yield, why use a compressor first of all instead of a submersible pump???

Regards

As gone through your Problem it seems to be that there will be a Gap between Rocky area and Loose soil area. In the Rocky area there will not be any Possibility of coming Sand. The Sand is Coming through the area in between  the Casing Pipe and  Rocky area. The reason behind it is that the Casing Pipe was not Properly Locked up to Rock surface where Rock Starts. It may be Possible way again get the Drilling Rig and Press the Casing Pipe gently to remove the Gap between Casing Pipe end and Rock where Starts.  You should use Submersible;le in the Place of Compressor Pump. If you are using Drip it is better to go for Disk Filter as well as Hydro-cyclone  Filters to avid  Jamming of Sand in the Drip laterals. Go for the operation of Happy using of Borewell in a Successful manner.
MANNE.SN,
for Vasudha Green Farms,
vasudhagreenfarms@gmail.com,
09133498366