Soft rock like limestone, gypsum, or other carbonate rock can wear down over time and cause a sink hole.This is referred to as the "Karst" terrain.After the underground hole collapses, the sinkhole opens.Property owners don't realize that their houses are built on a terrain called karst, which causes sudden and unexplained sinkholes.To fill a hole, you need to put a concrete plug in it.Next, fill the rest of the hole with clay sand and top it off with a layer of topsoil.
Step 1: If the hole grows, watch it.
A heavy rainstorm is one of the weather phenomena that can cause a sinkhole.As portions of limestone or other carbonate rocks fall away, the sinkhole can continue to grow.If the sinkhole continues to grow, don't attempt to fill it in.You can fill in the hole once it stops growing and stays the same size for a few days.
Step 2: Measure the size and depth of the hole.
The sink-holes can only be filled by homeowners.Take a pole or stick and look around in the hole.It is deep and wide.Walking around the edge of the sinkhole is a good idea.Don't fall because the ground can be very unstable.Don't attempt to fill in a sinkhole larger than 3 feet in diameter.Large sinkholes can be dangerous.Don't step down inside of the sinkhole if it's deeper than chest height.There is a high risk of collapse in holes with steep walls.
Step 3: Call a landscaping company.
It's time to call professionals if you're concerned about working in and around a sinkhole or think it is too large for you to fill.If you want to have a sinkhole on your property filled in, you should use the internet to find a local landscaping company.The average homeowner has less experience dealing with this phenomenon than a landscaping company.You need to contact the local authorities in the city or county where the sinkhole has appeared to deal with it.
Step 4: The outer edges of the hole need to be removed.
There is a possibility that the sinkhole is larger underground than it is on the surface.A shovel can be used to expand the size of the sinkhole.Make sure the surrounding ground is solid by removing the sod around the edges of the sinkhole.Continue to remove the edges of the hole until you reach a point where the soil is supported by rock.Remove any tree branches, pinecones, etc. that may be in the sinkhole.
Step 5: Dry concrete powder should be mixed with water.
Start by pouring a third of the mix into a basin.Put in 1 US-quart of water and mix with a hoe, shovel, or paddle mixer.Continue to add water until the concrete is wet.The strength of the concrete can be increased by adding gravel.You can buy concrete at your local hardware store or home-supply store.How much concrete you need to mix depends on the size and depth of the sinkhole.
Step 6: A concrete plug can be put in the sinkhole.
The concrete should be poured into the hole using the wheelbarrow and shovel.This will give a solid base for the materials you use to fill the hole.A quarter of the hole should be filled with concrete.If the sinkhole is 4 feet deep, fill it with 1 foot of concrete.You don't need to dry the concrete before filling the hole with sand and soil.Plug means that you will fill the hole with concrete.
Step 7: Clay sand can be put on top of a concrete plug.
Water can't collect in the re-filled sinkhole because of the thick, clayey sand.Sand can be deposited into a hole using a wheelbarrow or truck bed.When the hole is about 34 full, fill it with sand.Sand can be purchased at large hardware stores.If none of the venues sell clayey sand, you should contact a building contractor.You may be put in touch with a sand supplier by most contracting companies.
Step 8: The hole should be filled with something.
Take whatever remains of the hole and put it in the top of it.The materials you used to fill the hole will be brought up to the level of the surrounding yard.Plants will be able to grow on top of the former sinkhole if the hole is finished with topsoil.Topsoil can be purchased by the bag at home-supply stores.
Step 9: In a few days, top off the hole.
When you add sand and topsoil to the sinkhole, it will compact and settle over time.The room at the top of the sinkhole will be open again.The rest of the topsoil should be used to fill in the hole.If necessary, repeat this process more than once.Heavy rain is likely to cause the materials to settle.If you want to plant trees or shrubs over the sinkhole, be aware that they may not thrive due to a lack of nutrition in the soil.They could fall if the hole collapses again.