Tekkit pipes getting clogged

I have a Tekkit server running and I just started using a quarry. Twice now I have logged in and it has been SUPER laggy. I have discovered that this is because the pipes are getting clogged. After minutes of destroying my transport pipes, one I destroyed popped out this monster!

What could be causing this? Is there a known bug with pipes I haven't heard about? Maybe could it be because it is going into the earth and being surrounded on all sides? I do also have some powered gold pipes in this system, the rest being cobblestone