聚苯板和聚氨酯板渠道保温防冻胀效果及经济性分析
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摘要
针对用于衬砌渠道中不同保温材料防冻胀的性能,在黑龙江省蛤蟆通灌区采用现场试验方法,对聚苯板和聚氨酯板渠道保温防冻胀不同方案的渠道基土温度、冻胀量以及经济性进行了对比分析。结果表明:混凝土衬砌渠道铺设保温板后具有明显的保温防冻胀作用,可以有效地防止或减弱渠基土体冻胀的发生;在蛤蟆通灌区及其相似地区,选用不小于4cm厚的聚氨脂板或不小于8cm厚的聚苯板,可以获得理想的防冻胀效果;聚氨脂板保温性能更佳,但同等条件下造价高于聚苯板30%左右。聚苯板经济性更好,更适宜在实际工程中推广应用。
In order to investigate the anti-frost effect of different heat preservation materials used in the concrete lining channels. The paper conducts a comparative analysis of the temperature of canal foundation,frost heave and economical efficiency of polystyrene board and polyurethane board,through the test at Hamatong Irrigation Area in Heilongjiang Province. The findings are as follows: First,the laying of thermal insulation board under the lining layer of the irrigation ditch can effectively reduce or prevent the frost heaving failures of the foundation soil. Second,polystyrene board thicker than 8 cm or polyurethane board thicker than 4 cm is the ideal choice for Hamatong Irrigation Area and similar areas in terms of the insulation and anti-frost effect. Polyurethane board is much better than polystyrene board in terms of the insulation and anti-frost effect. It is also found that a 4 cm-thick polyurethane board performs similarly as an 8 cm-thick polystyrene board. The polyurethane board is better in terms of heat preservation,but the cost is 30% higher than the polystyrene. Given the lower cost of polystyrene board,it is suggested that polystyrene board is more suitable to be popularized and applied in practical engineering.
In order to investigate the anti-frost effect of different heat preservation materials used in the concrete lining channels. The paper conducts a comparative analysis of the temperature of canal foundation,frost heave and economical efficiency of polystyrene board and polyurethane board,through the test at Hamatong Irrigation Area in Heilongjiang Province. The findings are as follows: First,the laying of thermal insulation board under the lining layer of the irrigation ditch can effectively reduce or prevent the frost heaving failures of the foundation soil. Second,polystyrene board thicker than 8 cm or polyurethane board thicker than 4 cm is the ideal choice for Hamatong Irrigation Area and similar areas in terms of the insulation and anti-frost effect. Polyurethane board is much better than polystyrene board in terms of the insulation and anti-frost effect. It is also found that a 4 cm-thick polyurethane board performs similarly as an 8 cm-thick polystyrene board. The polyurethane board is better in terms of heat preservation,but the cost is 30% higher than the polystyrene. Given the lower cost of polystyrene board,it is suggested that polystyrene board is more suitable to be popularized and applied in practical engineering.
引文
[1]何武全,刘群昌.我国渠道衬砌与防渗技术发展现状与趋势[J].中国农村水利水电,2009(6):3-6.
[2]SWAMEE P K,MISHRA G C,CHAHAR B R. Design of minimum seepage loss canal sections.[J]. Journal of Irrigation&Drainage Engineering,2000,126(1):28-32.
[3] UPADHYAYA A. CHAUHAN H S. Water table rise in sloping aquifer due to canal seepage and constant recharge[J]. Irrigation and Drainage,2002,128(3):160-167.
[4] JANSEN H C,BHUTTA M N,JAVED I. Gtoundwater modeling to assess the effect of interceptor drainage and lining[J]. Irrigation and Drainage,2006,20(1):23-40.
[5]何武全,刘群昌,邢义川,等.渠道衬砌与防渗工程技术手册[M].北京:中国水利水电出版社,2015.
[6]曹永智,廖鉴萍.苯板保温法在防冻胀设计中的应用[J].中国农村水利水电. 2003(6):75-76.
[7]邢义川.现代渠道与管网高效输水新材料与新技术[M].郑州:黄河水利出版社. 2006.
[8]宋玲,余书超.季节冻土区防水卷材防渗渠道的特种衬砌方案研究[J].冰川冻土,2009,31(1):124-129.
[9]程满金,申利刚,步丰湖,等.聚苯乙烯保温板在衬砌渠道防冻胀中的应用研究[J].灌溉排水学报,2011,30(5):22-27.
[10]何武全,郑水蓉,沈长越,等.渠道防渗防冻胀复合型保温塑料板的试验研究[J].排灌机械工程学报,2012,30(5):553-557.
[11]郭婧,娄宗科,郭启胜,等.苯板保温在混凝土衬砌渠道中的应用及数值模拟[J].人民长江,2013,44(5):57-60.
[12]张绍强,吉晔.我国北方大型灌区渠道衬砌保温防冻胀技术应用现状调研报告[R].中国灌溉排水发展中心,2013. 9.
[13]张宇峰,何武全,张绍强,等.渠道防渗保温防冻胀标准化技术模式[J].中国农村水利水电,2014(3):62-64.
[14]中华人民共和国水利部.渠系工程抗冻胀设计规范:SL23-2006[S].北京:中国水利水电出版社,2006.
[15]中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.渠道防渗工程技术规范:GB/T50600-2010[S].北京:中国计划出版社,2011.
[2]SWAMEE P K,MISHRA G C,CHAHAR B R. Design of minimum seepage loss canal sections.[J]. Journal of Irrigation&Drainage Engineering,2000,126(1):28-32.
[3] UPADHYAYA A. CHAUHAN H S. Water table rise in sloping aquifer due to canal seepage and constant recharge[J]. Irrigation and Drainage,2002,128(3):160-167.
[4] JANSEN H C,BHUTTA M N,JAVED I. Gtoundwater modeling to assess the effect of interceptor drainage and lining[J]. Irrigation and Drainage,2006,20(1):23-40.
[5]何武全,刘群昌,邢义川,等.渠道衬砌与防渗工程技术手册[M].北京:中国水利水电出版社,2015.
[6]曹永智,廖鉴萍.苯板保温法在防冻胀设计中的应用[J].中国农村水利水电. 2003(6):75-76.
[7]邢义川.现代渠道与管网高效输水新材料与新技术[M].郑州:黄河水利出版社. 2006.
[8]宋玲,余书超.季节冻土区防水卷材防渗渠道的特种衬砌方案研究[J].冰川冻土,2009,31(1):124-129.
[9]程满金,申利刚,步丰湖,等.聚苯乙烯保温板在衬砌渠道防冻胀中的应用研究[J].灌溉排水学报,2011,30(5):22-27.
[10]何武全,郑水蓉,沈长越,等.渠道防渗防冻胀复合型保温塑料板的试验研究[J].排灌机械工程学报,2012,30(5):553-557.
[11]郭婧,娄宗科,郭启胜,等.苯板保温在混凝土衬砌渠道中的应用及数值模拟[J].人民长江,2013,44(5):57-60.
[12]张绍强,吉晔.我国北方大型灌区渠道衬砌保温防冻胀技术应用现状调研报告[R].中国灌溉排水发展中心,2013. 9.
[13]张宇峰,何武全,张绍强,等.渠道防渗保温防冻胀标准化技术模式[J].中国农村水利水电,2014(3):62-64.
[14]中华人民共和国水利部.渠系工程抗冻胀设计规范:SL23-2006[S].北京:中国水利水电出版社,2006.
[15]中华人民共和国住房和城乡建设部,中华人民共和国国家质量监督检验检疫总局.渠道防渗工程技术规范:GB/T50600-2010[S].北京:中国计划出版社,2011.