价值工程
價值工程
개치공정
VALUE ENGINEERING
2015年
14期
211-213
,共3页
低压管灌%管道布置%费用现值
低壓管灌%管道佈置%費用現值
저압관관%관도포치%비용현치
low pressure pipe irrigation%piping layout%cost present value
低压管道输水灌溉适应性强，不受地形限制，施工安装方便，便于群众掌握，可解决零散地块灌溉问题，适合当前农业生产责任制形式，因此目前低压管道输水灌溉面积在节水灌溉面积中占的比例最大。所用管材又是该灌溉系统的重要组成部分，投资比重一般约占工程总投资的70%~80%，直接影响工程的造价。如何进行工程设计、降低投资成为关键。通过对不同的机井位置、地块形状情况下的田间工程费用比较，最终确定费用现值最小的机井位置、地块形状。
低壓管道輸水灌溉適應性彊，不受地形限製，施工安裝方便，便于群衆掌握，可解決零散地塊灌溉問題，適閤噹前農業生產責任製形式，因此目前低壓管道輸水灌溉麵積在節水灌溉麵積中佔的比例最大。所用管材又是該灌溉繫統的重要組成部分，投資比重一般約佔工程總投資的70%~80%，直接影響工程的造價。如何進行工程設計、降低投資成為關鍵。通過對不同的機井位置、地塊形狀情況下的田間工程費用比較，最終確定費用現值最小的機井位置、地塊形狀。
저압관도수수관개괄응성강，불수지형한제，시공안장방편，편우군음장악，가해결령산지괴관개문제，괄합당전농업생산책임제형식，인차목전저압관도수수관개면적재절수관개면적중점적비례최대。소용관재우시해관개계통적중요조성부분，투자비중일반약점공정총투자적70%~80%，직접영향공정적조개。여하진행공정설계、강저투자성위관건。통과대불동적궤정위치、지괴형상정황하적전간공정비용비교，최종학정비용현치최소적궤정위치、지괴형상。
Low pressure pipe irrigation has strong adaptability, which is not restricted by terrain and the installation is convenient, so it is easy to master by the masses, and the problem of scattered land irrigation can be solved. It is suitable for the current agricultural production responsibility system, so the low pressure pipeline irrigation area occupies the largest percentage in the water-saving irrigation area. The pipe is an important part of the irrigation system, whose proportion of investment generally accounts for about 70% ~ 80% of the total project investment, so it directly affects the project cost. To reduce project investment by optimized design has become the key issue. Through comparison of field engineering cost of different shaft position and block shape, the lowest-cost shaft position and block shape is finally determined.
