河川疏濬粒料販售價格之探討

The Discussions of the Sale Price of River Sediment

鄭安(An Cheng) ； 徐輝明(Hui-Mi Hsu) ； 謝宏仁(Hung-Ren Hsieh) ； 鍾瑞玲(Jui-Ling Chung) ； 鄒思宇(Si-Yu Zou)

《國立宜蘭大學工程學刊》 4期 (2008/02) Pp. 105-116

https://doi.org/10.6176/BCE.2008.04.17

摘要

砂石料源佔混凝土之拌合材料百分之七十五以上，因此，砂石販售之價格高低，也影響到預拌混凝土價格。而台灣長久以來均仰賴河川砂石及進口料源，近年來面臨到環境保護、非法盜採及永續資源等考量下，部份地區砂石料源限制開採，導致砂石業者成本大受影響，連帶波及到預拌場業者及營造業，又因中國大陸於2007年3月起單向禁止砂石販售給台灣，造成國內砂石價格持續攀升，而為使砂石能持續供應市場需求及穗定砂石價格，政府採敢以公共造產方式辦理河川疏濬，此做法不但能有效整治河床，而其砂石採取之附帶效益，更能提供工程建設所需料源及平價供料之效果，以滿足目前市場上需求。因此，本研究將探討當前台灣砂石販售概況，並藉由公共造產所販售之砂石價格，討論公共造產、砂石場以及預拌場三者，製作過程當中之利潤分析，並提供符合市場需求之價格。同時提出三者產品市場販售價格決定之推測方式，並舉新竹縣頭前溪以公共造產方式疏濬販售砂石為例，以進行所提出理論之說明及驗證。

關鍵字

河川粒料 ； 砂石 ； 公共造產 ； 河川疏濬

並列摘要

The river deposits produce a great amount of sands and gravels which provide most of the concrete materials, nearly 75 % of the content. It is therefore the sale price of the sand and gravels directly affects the price of ready-mixed concrete. Taiwan has long-time relied on river deposits and imported materials to produce enough sands and gravels in market. In the past few years, the amount of reduced production unsatisfies the market requirement due to many considerations such as environmental protection, unlawful actions against regulations, and sustainable resources. Consequently, the corresponding industry such as ready-mixed concrete plants and constructions is under serious influence. On the other hand, China has cut down its supplies of sands and gravels since March, 2007 and it causes a more serious situation of insufficient sources to the market. Recently, the government takes the situation seriously considering of releasing the restriction of river drainage by the method of public property conduct management. Hopefully, it may provide enough supplies to the market in a way of satisfying the public benefits as well as flood prevention. This paper provides the general discussions of sands and gravels market in Taiwan. The study also investigates the market prices of river deposits, sands and gravels, and ready-mixed concrete, in which the various profits at each phases are analyzed as well. From the analyses, the methodology of determining various phases of sale prices is demonstrated by a case study of To-Chan river, Hsin-Chu County, in which the way of public property conduct management is adopted. Through the case study, the proposed methodology of determining the sale price is illustrated and examined to conform the market demand as well.

並列關鍵字

River Sediment ； Sand and Gravel ； Public Property Conduct Management ； River Dredging