Inclined well shaft construction technology
A construction process and wellbore technology, which is applied in well sinking, shaft equipment, mining equipment, etc., can solve the problems of wellbore excavation obstacles, slow excavation speed, and high wellbore cost, so as to speed up the construction progress, reduce the amount of frozen soil, and reduce the difficulty of construction and human and material resources
Inactive Publication Date: 2012-11-14
张晓岩
View PDF4 Cites 10 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The main inclined shaft shaft of a large-scale infrastructure mine in my country adopts the existing technology of freezing the inclined shaft shaft when it passes through the surface soil and weathered bedrock section. Although this method can ensure the safety of the shaft construction to the greatest extent, it also has a big disadvantage. That is, the permafrost area is too large, which has caused great obstacles to the excavation of the shaft.
A lot of manpower and material resources were wasted, resulting in the high cost of the shaft and the slow speed of the excavation
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] Embodiment of the present invention is described below in conjunction with accompanying drawing, embodiment does not constitute limitation of the present invention:
[0013] to combine figure 1 ;
[0014] The original shaft freezing process of inclined shafts is to freeze the entire shaft as a whole, including the shaft part that needs to be excavated, so that the excavation section of the shaft is all frozen soil, which cannot be opened by blasting or digging by excavators. Affected the excavation progress of mine, wasted manpower and material resources greatly, is extremely unfavorable for the construction of inclined shaft shaft.
[0015] to combine figure 2 ;
[0016] This measure is improved on the basis of the original freezing method. In order to reduce the area of frozen soil during the excavation process, we adopt block freezing, that is, the shaft wall and arch are vertically inserted into the freezing pipe for freezing; while the shaft floor is frozen f...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to an inclined well shaft construction technology. The construction technology comprises a freezing step and is characterized in that the freezing is block freezing, namely a shaft and an arch part are vertically inserted into a freezing pipe to be frozen. The construction technology also comprises a drilling and digging freezing of a shaft bottom-plate, the shaft bottom-plate is put down from a wellhead section to drill, and the direction of drill holes are parallel with the central line direction of a shaft, namely obliquely drilling; and a freezing station is established at a wellhead and is specially used for freezing of the shaft bottom-plate. The inclined well shaft construction technology adopting the technical scheme has the following beneficial effects that through the improved freezing process, the frozen soil quantity at the excavated section of the inclined well shaft can be greatly reduced, and even the excavated section of the shaft cannot generate frozen soil; the construction difficulty, the manpower and the material resources can be greatly reduced; and the construction progress of an inclined well can be greatly speeded up.
Description
Technical field: [0001] The invention relates to a construction technology of an inclined shaft in a coal mine, in particular to a construction technology of an inclined shaft. Background technique: [0002] my country is a country with extremely rich coal reserves. Mine construction is the basic premise for the development of coal resources in my country. Good well construction technology can not only greatly reduce the investment of construction funds, but also speed up the pace of mine construction. [0003] Inclined shaft freezing engineering refers to freezing the soil or rocks around the shaft wall to a certain extent in order to facilitate shaft excavation during the construction of inclined shafts, so as to reduce or eliminate accidents such as roof and floor collapse or water penetration during shaft excavation. Ensure that the wellbore passes through unstable formations safely. [0004] The main inclined shaft shaft of a large-scale infrastructure mine in my count...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E21D1/12
Inventor 张晓岩张辉张青霞
Owner 张晓岩