30results about How to "Solve drainage difficulties" patented technology

The invention belongs to technical field of coal mine underground excavation roadway construction, and particularly relates to a cross solid structure of a coal mine underground roadway, and the crosssolid structure solves the problems that construction time is long, a great deal of human and financial resources are wasted, construction progress is affected, and water drainage and transportationare difficult. The cross solid structure comprises a bottom area, a primary transportation main roadway, an excavation roadway, a protective cover, a water drainage ditch, a small water sump and a water guide tube, wherein a bottom area is excavated under a crossed part of the primary transportation main roadway and the excavation roadway, and the section of the bottom area is in the shape of an inverted trapezoid; the bottom area is arranged along the center line of the excavation roadway, passes through the primary transportation main roadway from the excavation roadway, and stops at the excavation roadway, and comprises a starting section, a penetrating section and a stop section; the protective cover is arranged on the top of the penetrating section; the small water sump is positionedat one side of the excavation roadway, and a water pump is arranged inside the small water sump; and the water drainage ditch extends to the small water sump. The cross solid structure is small in construction amount, is low in construction difficulty, reduces the cost, shortens construction progress, and solves the water drainage and transportation problem.