Slope Support Method Combining Pre-support and Permanent Support
A technology of permanent support and pre-support, which is applied in excavation, foundation structure engineering, construction, etc., can solve problems such as weak support and over-conservative slope support, achieve restraint of slope deformation, improve construction operability, highly operable effect
Active Publication Date: 2020-04-14
CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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[0013] The present invention provides a slope support method combining pre-support and permanent support, which solves the problem that the existing slope support method does not make full use of the mechanical strength of the slope rock and soil itself as the support system, resulting in Too conservative or too weakly supported issues
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[0046] The present invention will be further described below in conjunction with accompanying drawing.
[0047] The present invention includes a slope support method combining pre-support and permanent support, including lock support and slope support, see figure 1 with figure 2 . Among them, the locking support includes the following steps:
[0048] S1. Measure and set the slope opening line. Such as figure 1 , the slope opening line is the line connecting the intersection of the original ground line 6 and the artificial slope line 7, and is located on the top of the artificial slope line 7.
[0049] S2. Outside the opening line of the slope, along the upper side of the natural slope, set at least two rows of bolt arrangement points 1 at intervals. E.g figure 1 Among them, two rows of anchor arrangement points 1 are set at the position marked as 200 along the length of the original ground line 6, and more anchor arrangement points 1 can also be set according to the eng...
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The invention discloses a side slope supporting method combining pre-supporting and permanent supporting, and relates to the field of slope supporting. The problem that a slope support is over conservative or the support is over weak due to the fact that an existing slope supporting method does not fully utilize a slope rock and a soil body as a supporting system is solved. According to the technical scheme, the side slope supporting method combining the pre-supporting and the permanent supporting comprises the following steps that firstly, opening-locked supporting is carried out, then the side slope supporting is carried out; the lock opening support is carried out, and a side slope opening line is firstly measured; and then an anchor rod arrangement point is arranged outside the side slope opening line, the anchor rod arranging point is used for constructing a vertical anchor rod and a horizontal anchor rod correspondingly, and grouting is carried out; secondly, a steel bar net sheet is arranged, steel bars are arranged and connected, and a steel bar frame grid beam is formed; finally, concrete is sprayed; the slope supporting is excavated in a layered mode and supported in a layered mode through a method similar to the method of the opening-locked support, and finally excavation and supporting of the whole slope are completed. According to the method, the self-mechanical property of the rock and the soil body is fully utilized, the slope deformation of the side slope is restrained actively, so that cost is saved, the construction operability is high, and the safety riskis low.
Description
technical field [0001] The invention relates to civil engineering, in particular to the field of slope support. Background technique [0002] When constructing roads, railways, and municipal projects, it is inevitable to encounter slopes with poor engineering geological conditions, such as natural slope accumulation, loose gravel soil formed by artificial landfill, and debris formed by dumping deformation, strong unloading, and strong weathering. Unfavorable geological conditions such as rocks. Due to differences in engineering geological conditions, anisotropy of geotechnical engineering, construction functions of buildings, surrounding environmental constraints, and differences in design and construction levels, the design and construction of slope support has always been an engineering problem. [0003] If the actual engineering geological conditions are not fully understood and utilized before construction, the impact of construction on surrounding buildings is not full...
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IPC IPC(8): E02D17/20E02D5/74
CPCE02D5/74E02D17/20
Inventor 吴学智曾建军聂大丰游选成张丹
Owner CHINA HYDROELECTRIC ENGINEERING CONSULTING GROUP CHENGDU RESEARCH HYDROELECTRIC INVESTIGATION DESIGN AND INSTITUTE
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