《Technical Guide For Municipal Solid Waste Sanitary Landfills> Research For National Standard And Engineering Application

"Sanitary Landfill technical specifications"(CJJ17-2004) (referred to as "the norms"),It has played an important role in guiding the construction of the domestic waste landfill, but with the development of landfill technology, "the norms" exist in the absence of some content, and some provisions have been too short in some conten, not conducive to the designer, urgent need to supplement them,Therefore the Ministry of Housing and Urban Research following the preparation of the standard "Solid Waste Sanitary Landfill Guide"(Referred to as "The Guidelines").The paper based on the construction of Landfill Landfill technology development and research, following the based principles and methods of technical guidelines , and determined the main technical of "The Guidelines". Take predict the output of MSW,reservoir storage capacity calculations and design of the dam engineering for an example, establishment the two chapters of "The Guidelines"and apply to practical engineering design. The content and conclusions of the paper are as follows:(1) the main sections of "The Guidelines": 1 Overview; 2 "The norms" CJJ17 terms'analyze; 3 Layout of the overall and scope calculate; 4 Formed the basis for dealing with the venue; 5 Waste dam design and dam stability calculation; 6, Seepage and groundwater drainage systems lead the technical requirements and design calculations; 7 Rain and sewage diversion system technical requirements and design calculations; 8 Leachate collection and treatment systems; 9 Landfill gas collection and use of system technical requirements and design calculations ; 10 Field system technical requirements and design calculations; 11 Landfill of new technologies. "The Guidelines" has nearly 22 million words, more than 240 technical provisions, provides 31 design methods , nearly 220 related calculation formulas of the design and provide 43 cases.(2) Predict the output of MSW and calculate the capacity's research: There are five methods of Predict the output of MSW, in which the per capita calculation parameters a statistical calculation of garbage per day, and gives the accurate value of the reference to the election with the list. Calculation of the effective capacity of the landfill should be considered impervious system, covering systems and closure systems; In the same landfill, the share of natural seepage capacity factor> the share of double-impervious> the share of composite / single seepage; And the share of the same impermeable structure show a decreasing trend with the increases of capacity ; In the cell coverage, the domestic approach is used geomembrane material as a temporary cover, the use of a geomembrane cover the material as a unit, you can not take into account the thickness of the share covered storage coefficient, taken to be approximately 0.(3) Retaining dam design research: Retaining dam can be divided into construction grade I, II, III class according to the different height of the dam,the different positions,the different materials and the importance of the dam. The dam site should be considered about geological factors, hydrological factors, adequacy of dam construction materials and the transport convenience and other factors. The dam of Valley Landfill site should choose Taniguchi, the dam of plain landfill should be at the Geological better place. The connection of the dam with the foundation, slope and other structures need to be considered seepage. The stability of the dam is divided into four conditions: the construction of upstream and downstream slope; fill buried role of upstream and downstream slope; downstream slope after the closure; normal operation earthquake flood upstream and downstream dam slope based on dam construction, waste to landfill and closure received various periods of stable loading different operating conditions of its calculation.(4) Engineering design abstract: Use"The guidelines"in Anyang County's engineering, predict the waste output with the annual growth rate and the per capita waste production method, after checking, We found Anyang County Solid Waste Output in accordance with the guidance Statistics are compiled in the mid-10 per capita garbage production forecast for the reference and found closer to the actual yield, in proportion with the feasibility study report in accordance with the previous forecast of experience, there are 40 million cubic meters of waste volume more, avoid the problem which the design life of the landfill does not meet the program useful life. In the dam design, we design the dam of Baokang County's Sanitary Landfill in accordance with factors of the dam site, the dam type and material selection and so on, in the case of guaranteed the capacity, make the dam length reduced the feasibility study of the 360m length to 113 m, the dam height of 55 m down to 25m, greatly improving the security and stability of the dam and reduce the construction costs.