××高速公路是迄今为止××省投资规模最大、工程最为艰巨、地质最为复杂、建设周期最长的高速公路工程，也是目前全国建设难度最大的高速公路项目之一。具有地形地貌特殊、地质条件复杂等特点，同时深路堑边坡、高填石路堤和高边坡问题也很突出，隧道弃渣和开山弃渣较多，生态环保要求高，工程技术和质量控制难度大。针对山区高速公路及本工程项目施工特点，特制定本办法。
1 一般规定
1.1 场地清理
1.2路基用地范围内的树木、灌木丛等均应在施工前砍伐或移植清理，砍伐的树木应移置于路基用地之外，进行妥善处理。应将路基范围内的树根全部挖除并将填方路段坑穴填平夯实。
1.2 基底处理
1.2.1 应做好原地面临时排水设施，并与永久排水设施相结合。排出的雨水，不得流入农田、耕地；亦不得引起水沟淤积和路基冲刷。水田、堰塘地段，应视其具体情况采用排水清淤或晾晒压实。若水塘需保留一部分，则应按浸水路堤的要求修筑。
1.2.2 原地面的坑、洞、墓穴等，应用原地的土或砂性土回填，并按规定进行压实。对于溶洞、天坑的处理按设计规定执行。
1.2.3 填方和借方地段的原地面应进行表面清理。基底为耕地或松土时，应先清除有机土、种植土，集中堆放并应按水土保持要求进行覆盖保存，用于耕地恢复，平整后按规定进行压实。在深耕地段，必要时，应将松土翻挖，土块打碎，然后进行回填、整平、压实。其中整平、压实必须达到规定要求，方可进行填方作业。
1.2.4 基底原状土的强度不符合要求时，应进行换填，换填深
× × × × provincial highway is by far the largest investment project the most difficult, most complex geology, the longest highway project construction period, is currently the national highway building one of the most difficult. Has a special topography, complex geological conditions, etc., while deep-slope, high-filling embankment and slope problems are also prominent, tunnels and mountains Spoil Spoil more demanding eco-environmental protection, engineering and quality control difficult. Mountain-highway and construction characteristics of the project is formulated approach.
1 General Provisions
1.1 site clean-up
1.2 The trees within the roadbed site, bushes, etc. shall be cut or transplanted in the pre-construction cleaning, felling of trees should be transported to sites outside the embankment, were handled properly. Subgrade should be all the roots within the excavation and compacted fill sections of pits filled.
1.2 Bed Treatment
1.2.1 should do when faced with drainage facilities in situ, and combined with the permanent drainage facilities. Discharge of stormwater, not into the farmland, cultivated land; also may arise from the ditch siltation and embankment erosion. Paddy field, Yan Tang lots should be used depending on their specific circumstances or dry compaction water dredging. If necessary to retain part of the reservoir, then the requirements should be soaked embankment construction.
1.2.2 of the original ground pits, holes, vaults, etc., applied in situ soil or sandy soil backfill, in accordance with the provisions of compaction. The cave, doline processing according to the design regulations.
1.2.3 Filling and debit should be the lot of the original ground surface cleaning. Substrate for the land or loose soil, it should first remove the organic soil, planting soil, water and soil conservation should focus on piling up, and cover the requirements of preservation, for land restoration, after the formation of compaction in accordance with regulations. In the deep plowing the lot, when necessary, should be turned loose soil digging, breaking clods, and then backfilling, leveling, compaction. Including leveling, compaction must meet specified requirements before proceeding to fill jobs.
1.2.4 base strength of undisturbed soil does not meet the requirements, should be replacement, replacement of deep