Road goaf treatment method based on inclined hole grouting
A goaf and oblique hole technology, applied in drilling equipment and methods, earthwork drilling, soil protection and other directions, can solve problems affecting the normal implementation of goaf treatment projects and other issues
Pending Publication Date: 2022-08-09
山西省交通科技研发有限公司
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Problems solved by technology
But at present, the grouting method adopted in the treatment of highway goafs is carried out by drilling vertical boreholes. The governance range of highway goafs includes a certain range on the side of the road in addition to the directly below the road; in the actual treatment of highway goafs Among them, the construction land occupied by goaf treatment on the side of the highway is often a temporary land occupation outside the red line of road land acquisition. If the temporary land occupation is factories, residential buildings, etc., the land acquisition cost often reaches dozens of times the cost of grouting treatment. The existing The grouting method will have great limitations, which will affect the normal implementation of the goaf treatment project
Method used
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Embodiment 1
[0032] There is a goaf beneath the subgrade of a certain expressway. The existing residential area is located on one side of the subgrade, and the residential area is located outside the red line of highway land acquisition.
[0033] 1. Determine the treatment scope and depth of the gob plane:
[0034] According to the survey data and relevant specifications, the treatment depth of the goaf is 140m below the ground, and the plane treatment scope of the goaf is the subgrade and 80m on both sides of the subgrade. The existing treatment methods cannot carry out this treatment work.
[0035] 2. Layout of inclined holes and determination of construction parameters:
[0036] According to the site conditions, the subgrade area is selected as the location of the inclined hole.
[0037] like figure 1 As shown, along the direction perpendicular to the boundary of the oblique hole, 4 rows of drilling holes are arranged with a drilling spacing of 5m, and the spacing between the drilling...
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Abstract
The invention relates to a highway goaf treatment method based on inclined hole grouting. The highway goaf treatment method comprises the following steps that (1) the goaf plane treatment range and depth are determined; (2) arranging inclined holes and determining construction parameters; (3) putting points; (4) drilling an inclined hole and running a sleeve; (5) pouring an orifice pipe; (6) stirring to obtain slurry; (7) grouting; and (8) stopping grouting. According to the method, the goaf treatment construction area can be flexibly selected, the goaf treatment effect outside the road construction land acquisition red line range is good, and a large amount of land acquisition and demolition cost can be saved on the basis of guaranteeing the goaf road construction and operation safety.
Description
technical field [0001] The invention belongs to the technical field of highway disease treatment, in particular to a treatment method for highway goafs based on inclined hole grouting. Background technique [0002] At present, the treatment methods of geological disasters in highway goaf mainly include grouting method, dry (slurry) masonry support method, excavation and backfill method, roadway reinforcement method, and dynamic compaction method. The grouting method has been widely used in the treatment of highway goaf due to its wide application range. However, the grouting method currently used in the treatment of highway gobs is carried out by drilling vertical holes. The treatment scope of highway gobs includes a certain area on the side of the road in addition to the directly below the road; treatment in the actual highway gobs Among them, the construction land occupied for the treatment of gobs on the roadside of the road is often the temporary land occupation outside...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B7/00E21B7/06E21B7/10E21B7/20E21B47/04E21B33/13E02D3/12
CPCE21B7/00E21B7/06E21B7/10E21B7/20E21B47/04E21B33/13E02D3/12Y02A30/60
Inventor 刘亚明李波孔繁盛韩文斌孙志杰王保生姚广王兴张必昌
Owner 山西省交通科技研发有限公司