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首页> 外文会议>Shale energy engineering conference 2014: technical challenges, environmental issues, and pubulic policy >Rock Excavation Index Approach for Estimating Blast Rock for Shallow Pipeline Construction
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Rock Excavation Index Approach for Estimating Blast Rock for Shallow Pipeline Construction

机译：浅埋管道施工爆破岩的岩石开挖指数估算方法

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摘要

Pipeline construction can be disruptive for rural communities in the vicinity of shale energy development and expensive for the pipeline companies, particularly if unanticipated blasting for excavating shallow pipeline trenches causes construction delays. A rock excavation index can be defined based on subsurface conditions interpreted from digital topography, geology, and soils data. Topographic data provide slope steepness and down-slope direction needed for evaluating sidehill conditions. Rock factors ranging from 0 for uncemented soil to 3 for nearby rock outcrop, weathered rock near top of ditch, or unweathered rock at any ditch depth can be created with GIS utilities as "rock factor" polygons along the pipeline centerline. Ground-condition variability requires subjective assessment and can be addressed in a limited way with use of seismic refraction surveys at truly random locations along the pipeline or at selected locations based on rock excavation factors. Rock excavation can be estimated using length-based and area-based percentages for ditch rock and right-of-way grading rock. Blasting details from actual construction records are needed to improve the accuracy of rock excavation estimation.
机译：对于页岩能源开发附近的农村社区，管道建设可能会造成破坏，对管道公司而言可能会造成昂贵的成本，特别是在开挖浅管道沟槽的意外爆破导致施工延误的情况下。可以根据从数字地形，地质和土壤数据中解释的地下条件来定义岩石开挖指数。地形数据提供了评估坡度条件所需的坡度和下坡方向。可以使用GIS实用程序创建沿管道中心线的“岩石因子”多边形，这些岩石因子的范围从未胶结土壤的0到附近岩石露头的3，在沟渠顶部附近的风化岩石或任何沟渠深度的未风化岩石。地面条件的变化性需要主观评估，并且可以在沿管道的真正随机位置或基于岩石开挖因素的选定位置使用地震折射调查以有限的方式解决。可以使用基于长度和基于面积的百分比来估计沟渠岩石和路权平整岩石的岩石开挖。需要从实际施工记录中进行爆破细节，以提高岩石开挖估算的准确性。

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