A basalt fiber anchoring system with accurate sectioned grouting includes: a plurality of first base plates arranged in an anchoring borehole, where every two first base plates are arranged at an upper end and a lower end of a section to be grouted respectively; a plurality of basalt fiber reinforced plastics (BFRP) penetrating the plurality of first base plates; and a grouting device including a valve pipe and a grouting core pipe, where the valve pipe penetrates all the first base plates, a plurality of grouting ports are defined in a pipe wall of the valve pipe, each of the plurality of grouting ports is covered with an elastic sheath, the grouting core pipe is sleeved with two grout stop sealing plugs at intervals, a plurality of grout outlets are provided between the two grout stop sealing plugs.

A basalt fiber anchoring system with accurate sectioned grouting includes: a plurality of first base plates arranged in an anchoring borehole, where every two first base plates are arranged at an upper end and a lower end of a section to be grouted respectively; a plurality of basalt fiber reinforced plastics (BFRP) penetrating the plurality of first base plates; and a grouting device including a valve pipe and a grouting core pipe, where the valve pipe penetrates all the first base plates, a plurality of grouting ports are defined in a pipe wall of the valve pipe, each of the plurality of grouting ports is covered with an elastic sheath, the grouting core pipe is sleeved with two grout stop sealing plugs at intervals, a plurality of grout outlets are provided between the two grout stop sealing plugs.

Jet grouting involves injecting grout into geological material to improve its quality; however, use of jet grouting is limited to situations in which the injection systems can be positioned relatively close to the region to be improved. This can be impractical (for example in heavily built up areas, rough terrain or beneath the seabed) or inconvenient (for example where closing a tunnel would be required). The present invention enables deployment equipment 41 to be passed down a bore in order to deploy material and/or equipment through a hole in the lining of a bore 43 into the underlying geology. In this way, underground assets may be repaired from a location external to the asset, allowing repair in situations where it would be impossible or cost-prohibitive to do so with conventional ground treatment techniques.

Jet grouting involves injecting grout into geological material to improve its quality; however, use of jet grouting is limited to situations in which the injection systems can be positioned relatively close to the region to be improved. This can be impractical (for example in heavily built up areas, rough terrain or beneath the seabed) or inconvenient (for example where closing a tunnel would be required). The present invention enables deployment equipment 41 to be passed down a bore in order to deploy material and/or equipment through a hole in the lining of a bore 43 into the underlying geology. In this way, underground assets may be repaired from a location external to the asset, allowing repair in situations where it would be impossible or cost-prohibitive to do so with conventional ground treatment techniques.

A method for the construction of composite under-reamed pile, including: implementing a jet grouting and agitation at a pre-designed position to form a composite cemented-soil foundation; constructing the pile hole with a drilling rig, during which bulb cavities are formed when the pile structure includes bulbs; cleaning the pile hole, lifting down a reinforcing cage, lowering a concrete pouring conduit to the pile hole, and lifting the pouring conduit while pouring the concrete; the hardened concrete becoming a pile stem in the pile hole and a bulb in the bulb cavity. Thus, this construction method can completely eliminate the hole collapse risk at the bulb cavity position during drilling; the combined structure of the bulb and the composite cemented-soil foundation can greatly improve the bearing capacity of pile foundation, significantly reduce the settlement risk and the cost of the pile foundation, as well as shorten construction period.

A method for the construction of composite under-reamed pile, including: implementing a jet grouting and agitation at a pre-designed position to form a composite cemented-soil foundation; constructing the pile hole with a drilling rig, during which bulb cavities are formed when the pile structure includes bulbs; cleaning the pile hole, lifting down a reinforcing cage, lowering a concrete pouring conduit to the pile hole, and lifting the pouring conduit while pouring the concrete; the hardened concrete becoming a pile stem in the pile hole and a bulb in the bulb cavity. Thus, this construction method can completely eliminate the hole collapse risk at the bulb cavity position during drilling; the combined structure of the bulb and the composite cemented-soil foundation can greatly improve the bearing capacity of pile foundation, significantly reduce the settlement risk and the cost of the pile foundation, as well as shorten construction period.

A system for injecting expanding resins into soils to be consolidated, includes a pump apparatus which is operationally associated, at a delivery port, with a tubular element which can be inserted into a respective hole defined in the soil to be consolidated and is adapted to send to the tubular element a mixture at a preset supply pressure. The tubular element has a number of holes, at least two of the holes including respective calibrated holes.

A system for injecting expanding resins into soils to be consolidated, includes a pump apparatus which is operationally associated, at a delivery port, with a tubular element which can be inserted into a respective hole defined in the soil to be consolidated and is adapted to send to the tubular element a mixture at a preset supply pressure. The tubular element has a number of holes, at least two of the holes including respective calibrated holes.

A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.

A system for and method of stabilizing rail track structures using a load transfer apparatus is disclosed. The load transfer apparatus includes a vertical load transfer element and a top load transfer element, wherein the top load transfer element is used to transfer applied locomotive and rail car loads to the vertical load transfer element. In one embodiment, the top load transfer element includes helical flights. In another embodiment, the top load transfer element includes a flared top. In yet another embodiment, the top load transfer element includes a load transfer cap. In a further embodiment, the top load transfer element includes two or more support legs each with a top support attached thereto. The railroad stabilization system can comprise any one type or any combinations of types of the aforementioned load transfer apparatuses.