RU2121034C1 - Method for working soft sediments on acting dredge-placed fills - Google Patents

Abstract

FIELD: methods of working soft sediments; may be used in construction and operation of structure from loose materials. SUBSTANCE: method includes stopping of dredge-placing to dam section where building-up of next tier is anticipated. Then road is constructed beyond the zone of working the hydraulic fill sediments along the dam. Road filled with coarse-grained materials is designed for hauling units and excavators used in excavation of drainage ditch made parallel to road beginning from catch pit. Excavated material during construction of drainage ditch is hauled to dam and water from this ditch is directed to catch pits. Sediments are worked after their drying due to water outflow to drainage ditch at the section limited by this ditch and constructed dam. EFFECT: higher efficiency of working water-saturated soft sediments due to simplifying of working process; reduction of moisture content of worked material and terms of work and cut down cost of work. 2 dwg

Description

 The invention relates to the field of hydraulic engineering and can be used in the construction and operation of structures from bulk materials.

 There is a method of developing water-saturated low-strength deposits during the operation of the existing alluvial dump, including the selection of areas on washed deposits, the construction of roads from coarse-grained material on them, the development of deposits on the site and the transfer of the road to a new site / RU, patent N 2081963, cl. E 02 B 1/00, 1966 /. The disadvantage of this method is the need to use in the development of deposits of pumps for pumping incoming water into the quarry, which increases the cost of development.

 A known method of developing water-saturated low-strength bulk materials, including the creation of development sites, the device on the road sediments from coarse-grained with different properties of the material and the transfer of this road as the development of sediments to a new place - to undeveloped deposits / SU, copyright certificate N 1465472, class. E 02 B 1/00, 1989 /. The disadvantage of this method is the impossibility of developing low-strength deposits during operation of the existing alluvial dump, since the pulp and water flows from the settling pond will enter the quarry, which will significantly complicate or make impossible the development of deposits.

 The closest in technical essence and the achieved result to the proposed invention is a method for the development of low-strength deposits during operation of the alluvial dump, comprising a device on the deposits of access roads - roads of coarse-grained material and the development of low-strength deposits / cm. The technology for the construction of ash dumps with dams of the obval from ash and slag material, overview information. Panteleev V.G., Zholnerovich V.G. M .: Informenergo, 1988, a series of "Thermal stations, heating and heating networks", issue. 1, p. 20/. The disadvantage of this method is the high cost of development, because along with the selection of low-strength deposits, valuable road material is also taken.

 The aim of the proposed technical solution is to increase the efficiency of the development of water-saturated low-strength deposits by reducing the cost of development, reducing the moisture content of the material being developed, reducing the time and simplifying the development process.

 This goal is achieved by stopping the alluvium to the dump section, where the next tier of the extension dam is supposed to be erected, a road is constructed along the dam, which serves to move vehicles and excavators, with the help of which a drainage ditch is developed parallel to the road, from which water is discharged to the catchment wells, and the material selected from the drainage ditch is discharged into the dam.

 The road is covered with coarse-grained material. In the absence of coarse-grained material, fine-grained with laying on top of road plates can be used.

 The development of sediments is carried out after their drainage due to the outflow of water into the drainage ditch in the area limited by this ditch and the dam under construction.

The invention is illustrated by drawings, where in FIG. 1 is a side view of the alluvial blade, and FIG. 2 - cross section precoat fragment blade, where 1 - crest existing dam, 2 - spillway wells 3 - width of the base being constructed dam In _d, 4 - boundary career Fat development, 5 - The _op - the optimum area development bulldozer Fat, an arrow indicates the direction development, 6 - drainage ditch with a slope of i = 0.001 with a mouth in spillway wells, 7 - access road from coarse-grained material, 8 - transport mechanism with an excavator with a maximum radius of reach R max.

 The method is implemented in the following sequence. The alluvium is stopped at the dump section, where the construction of the next tier of the extension dam is planned. Outside the zone of development of alluvial deposits, a road is being constructed along the dam. The road, covered with coarse-grained material, serves for the movement of vehicles and excavators, with the help of which the development of a drainage ditch parallel to the road, starting from the spillway, is carried out. The material selected during the construction of the drainage ditch is transported to the dam, and water from the drainage ditch is discharged to the spillway wells. After the sediments are drained due to the outflow of water into the drainage ditch, they are developed in the area limited by this ditch and the dam under construction.

 The invention has several advantages compared to existing methods for developing water-saturated low-strength deposits. It allows you to develop during the operation of the existing all-round dump with a greater degree of efficiency all year round, regardless of the ambient temperature. The cost of developing low-strength sediments is minimal as a result of the drainage of sediments due to the presence of a drainage ditch and drainage of water from it to the spillway wells. Thus, the system of water reduction and sanitation does not require special mechanisms / for example, pumps / or other expensive equipment.

 This method is characterized by high technical and economic indicators. For example, the introduction of this method at the ash dump of the CHPP of the Arkhangelsk PPM during the construction of the dam made it possible to obtain an economic effect of 8 billion rubles. at 1996 prices. This method allows you to minimize the time required for dehydration and consolidation of alluvial deposits and the ability to start developing these deposits.

 This method is scientifically justified and meets all standardized safety requirements.

 Along with the above advantages, the invention provides the reliability and environmental safety of the alluvial dump.

Claims (1)

 A method for developing low-strength sediments on existing alluvial dumps, including erecting access roads from coarse-grained material on alluvial sediments and developing sediments, characterized in that outside the zone of development of alluvial sediments after stopping the alluvial sediment in the dump section, where the construction of the next tier of the extension dam is proposed, a road is constructed along the dam, which serves for the movement of vehicles and excavators, with the help of which they develop a drainage ditch and water parallel to the road from which it is withdrawn a spillway wells selected in the device drainage ditches material transported in the dam and after dewatering is carried Fat their development in the area bounded by the drainage ditch under construction and dam.

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