土方工程試驗段施工方案.doc
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土方工程試驗段（K31＋945~K32＋189.6）
施 工 方 案
一、 簡述
第五標路基土方工程試驗段，經項目部現場實地考查后，選擇在二工區K32＋189.6~~K32+485段進行，該段靠近3＃取土坑，，可以就近取土。
施工流程安排
原地面高程復測 路基、取土坑清表 填前壓實 土料開采、運輸、填筑、壓實 總結施工參數 報監理工程師批準后作為土方填筑施工的控制依據。
二、 具體施工組織
1、原地面高程復測
對業主、監理提供導線控制點和高程基準點，使用全站儀和自動安平水準儀進行聯測，按JTJ061－99等相關技術規范的測理精度要求，校核各導線點的坐標和水準點的高程，若復測誤差不符合精度要求時，報業主、監理進行補測，重新校核合格后，方可作為恢復定線測量的依據。
利用校核合格并經監理批準使用的控制點，采用全站儀極坐標法恢復路基中線，根據設計圖紙民尺寸及施工規范要求，放出路基中線。之后復測原地面高程并報監理工程師復核。
2、清表
監理工程師復核原地面高程之后進行清表工作。
清表深度20－30cm，將上層表土（雜草、淤泥及作物根系）推至路基右側攤平，將下層表土作為路基左側段便道利用
Earthworks test section (K31 +945 ~ K32 +189.6)
Facilities work plan was
A brief account of
Fifth standard test section subgrade earthwork, site field visits by the project department, choose the second work area K32 +189.6 ~ ~ K32 +485 paragraph, the paragraph near the 3 # to take the pit, can be dug nearby.
Arrangements for the construction process
Retest the original ground elevation embankment, clearing the table to take the pit fill material compacted soil before the extraction, transport, filling, compaction parameters summarized construction supervision engineers reported the approval of the control as a basis for earthwork embankment construction.
Second, the specific construction organization
1, the original ground elevation retest
Owners, to provide lead supervision control point and elevation reference point, using total station and automatic leveling and joint Ping test, according to JTJ061-99 technical specifications and other related management precision measuring and checking the coordinates of each point and standard wire points elevation, Ruofu measurement error does not meet accuracy requirements, the newspaper owners, and supplementary supervision for re-checking of qualified only after the restoration of alignment as the basis for measurement.
Use checking of qualified and approved for use by the supervisory control points, polar coordinates using Total Station Restoration and embankment center line, according to the design drawings and construction specifications size people, let embankment center line. After the retest of the original ground elevation shall be reported to supervision engineer for review.
2, clear the table
Supervising Engineer after review of the original ground elevation work clearing the table.
Clear the table depth of 20-30cm, the upper surface (grass, mud and plant roots) to promote the right to share the subgrade level, will be the lower left section of the topsoil as roadbed pavement use