83results about How to "Improve project efficiency" patented technology

The invention discloses a kitchen waste and sludge collaborative treatment system and method. The system comprises screen type separation equipment for screening kitchen waste, crushing and separationequipment for crushing and separating the small kitchen materials obtained after screening, oil-water separation equipment for carrying out oil removal treatment on the kitchen slurry separated out by the crushing and separation equipment, collaborative pulping equipment for mixing the sludge and the kitchen slurry after oil removal treatment and anaerobic digestion equipment for carrying out anaerobic digestion on the mixed slurry prepared by the collaborative pulping equipment. After the kitchen waste is subjected to classification and separation and slag removal, the content of inorganic matter can be reduced, and the anaerobic fermentation efficiency is improved. Meanwhile, the internal abrasion of a tank body is reduced. On one hand, the oil removal treatment can collect the waste oil for reutilization (such as preparing of biodiesel), so that the project benefit is increased; and on the other hand, the grease content and the specific adhesion and isolation characteristics of grease in the slurry can be reduced, and the anaerobic reaction effect is increased after the grease is removed.

The invention discloses a foundation pit support structure of buildings which comprises a soil nailing wall surrounding a foundation pit and a prestressed anchor rod which is inserted into the soil body by the soil nailing wall. The invention is characterized in that the pier column structure is arranged on the soil nailing wall every 5 meters to 10 meters; wherein, the pier column structure comprises a filling pile group which is perpendicular to the bottom of the foundation pit, the prestressed anchor rod at the two sides of the filling pile group and a level channel steel which is connected with the anchor rod at the two sides and is arranged at the outside terminal of the soil nailing wall; the filling pile group is packed in the soil nailing wall and consists of at least two filling piles in homogeneous alignment. The invention makes use of the pier column structure to divide the large-area foundation pits into small-area foundation pits; the combination of a filling pile, a prestressed anchor rod and the soil nailing wall raises the ability of the pit support in anti-deforming and anti-displacement and realizes the supporting to the foundation pit; besides, the construction cost is just 60 percent of rigid perfusion row piles.

The invention discloses a large-arch-foot three-step tunnel rapid construction method and structure based on pipe shed pre-supports. Short pipe sheds are constructed through a hole interior non-work-room pipe shed construction technology to reinforce and support surrounding rock in front of a tunnel face in advance; large arch feet are arranged at bases all stages of steps; and under dual controlmeasures, the tunnel cross section is sequentially excavated by three steps, according to the specific processes, firstly, short pipe shed advance supports are constructed within a certain range alongan arch part of a tunnel, the upper, middle and lower steps are sequentially excavated with alternate distances, after excavation of each step, the primary supports are constructed instantly, footings of the primary supports are designed to of a large-arch-foot type, and when the lower step is away from a secondary lining of a former cycle by the tunnel diameter, an inverted arch, side walls, a filled layer and a secondary lining are constructed. The problem that under the condition of the shallow-buried weak surrounding rock, deformation control over the tunnel is difficult is solved, and meanwhile the disadvantages that under the same condition, a traditional construction method is many in subsection, numerous in working procedure, slow in construction, many in temporary support and thelike are further overcome.

The invention provides a construction method of a basement outer wall. The basement outer wall is constructed in a mode of disassembling a middle beam, the safety of a foundation pit is ensured in the process of disassembling the middle beam through replacing supports with support steel pipes, after the supports are replaced, steel bars are arranged in guard posts, the inner sides of the guard posts are smoothened with mortar so as to form water-proof layers, and then, the guard posts are welded with the steel bars by split bolts. A building area within red lines is sufficiently utilized under the conditions of ensuring construction safety and construction quality, and project benefit is improved. Besides, only formwork on one side needs to be propped during construction, one construction procedure is eliminated, the construction period is shortened, and the construction cost is reduced.

The invention discloses an airbag type inner framework from traveler and a primary tunnel supporting shotcrete construction method. The form traveler comprises a movable supporting framed bent, an inflatable formwork located on the outer side of the movable supporting framed bent, and a retractable supporting device for supporting the inflatable formwork, and the retractable supporting device is installed on the movable supporting framed bent and located on the inner side of the inflatable formwork. The construction method includes the steps: firstly, forwarding the airbag type inner framework from traveler in place; secondly, performing primary tunnel supporting shotcrete construction; thirdly, performing primary tunnel supporting shotcrete construction on a next tunnel section; fourthly, repeating the third step for multiple times till the primary tunnel supporting shotcrete construction process of all the tunnel sections is finished. The airbag type inner framework from traveler is reasonable in design, simple to construct and good in using effect, resilience rate of primary tunnel supporting shotcrete is effectively controlled through an airbag type inner framework, construction efficiency is high, construction period is short, construction quality is high, and zero resilience rate of primary tunnel supporting shotcrete can be realized.

The invention discloses an arch rib of a reinforced concrete arch rib, an erection support and a manufacture method of the arch rib. The manufacture method can be applied to manufacture and erection of the arch rib of conventional reinforced concrete bridge and the arch rib of a reinforced concrete tied-arch bridge, and can improve the stability of an arch rib support during erecting the arch rib and after erecting and positioning the arch rib, as well as ensuring the safety in erecting of the arch rib. The arch rib disclosed by the invention comprises an arch rib body; a thrust switching support saddle is arranged in a position, corresponding to the arch rib support, of the arch rib body. The erection support is provided with an I-shaped support body, and the upper end surface of the erection support is a horizontal plane; and the support body is welded at the top part of the arch rib support and is in horizontal contact with a bottom plate of the thrust switching support saddle. The manufacture method of the arch rib comprises the following steps in sequence: pouring concrete in positions, corresponding to the arch rib support, at two ends of the arch rib body in order to fix embedded steel bars; marking a vertical line which is only formed after the arch rib main body is erected on the arch rib body before the erection is carried out; and welding the bottom plate with the lower ends of the embedded steel bars. By adopting the manufacture method, the safety in construction can be improved, and the risk in construction can be avoided.

The invention discloses a foundation pit support structure of buildings which comprises a soil nailing wall surrounding a foundation pit and a prestressed anchor rod which is inserted into the soil body by the soil nailing wall. The invention is characterized in that the pier column structure is arranged on the soil nailing wall every 5 meters to 10 meters; wherein, the pier column structure comprises a filling pile group which is perpendicular to the bottom of the foundation pit, the prestressed anchor rod at the two sides of the filling pile group and a level channel steel which is connected with the anchor rod at the two sides and is arranged at the outside terminal of the soil nailing wall; the filling pile group is packed in the soil nailing wall and consists of at least two filling piles in homogeneous alignment. The invention makes use of the pier column structure to divide the large-area foundation pits into small-area foundation pits; the combination of a filling pile, a prestressed anchor rod and the soil nailing wall raises the ability of the pit support in anti-deforming and anti-displacement and realizes the supporting to the foundation pit; besides, the construction cost is just 60 percent of rigid perfusion row piles.

A method for calculating river silt removal amount is disclosed. The method includes the steps of dividing the length to be desilted into N unit segments, obtaining the section depth of each unit segment separately, dividing the horizontal plane of a unit segment into m triangles along its length direction, obtaining the area of the triangle and the elevation of the three vertices, calculating thevolume of the triangle correspond to the triangular prism, obtaining the required depth after dredging, calculating the volume of triangular elevation after desilting, calculating that desilting amount of each triangle correspond to the river region, utilizing the triangle to differentiate each unit segment, calculating the desilting amount volume of each triangle in each unit segment, reducing the measurement error, summing up the desilting amounts of all the triangle corresponding to the river region to be the desilting amount of the unit segment, thereby obtaining the accurate result. Themethod is helpful to put forward the best design and construction scheme, and has very important positive significance to save precious land resources, reduce investment and improve engineering benefit.

The invention relates to the technical field of dredging engineering, in particular to the field of cutter suction dredger digging and particularly provides a construction method for ship digging-depth dynamic control. The construction method comprises the following steps that first, a curve graph of the temporary fairway original mud surface elevation changing along with the fairway mileage is dawn; second, a monthly lowest water level curve graph is drawn; third, the digging depth is designed; fourth, model calculation and analysis are conducted; fifth, the digging depth is determined; and sixth, the digging depth is adjusted dynamically. The tide law is fully utilized, under the premise of guaranteeing the safety of a ship, the cutter suction dredger digging depth is controlled within an economic and reasonable range all the time and adjusted dynamically, so that under the premise of guaranteeing the safety of the ship, dug waste soil can be reduced effectively, the construction process is accelerated, and the engineering benefits are improved.

The invention discloses a resource balance self-adaptive scheduling method in multi-project and multi-task management. The method of the invention combines the actual needs of customers and the actual problems of project management, and satisfies the requirements of each item in the project when the parallel resources of a single project or multiple projects are overloaded. According to various practical constraints, while automatically balancing and allocating resources, reasonable scheduling and arrangement of project progress are made, resources are rationally utilized, and project quality is improved, which effectively solves the problem of project scheduling under various complex constraints in the actual project management implementation, and quickly and automatically realizes resources. The balanced utilization of the project generates a reasonable project schedule, which effectively reduces the project cost and project risk, improves the project quality and project progress, and increases the project benefit.

The invention discloses a mountain river pebble beach group linked renovation method based on a gradient principle. The mountain river pebble beach group linked renovation method is characterized by setting two control conditions needed in shoal channel flow renovation, namely the unit discharge control condition and the gradient control condition, and construction and management are conducted by obtaining submerged dike specification data through a water conservancy simulation test according to the control conditions. In the control conditions, the linkage condition and the gradient principle of riverbeds are sufficiently considered, the number of model test groups is greatly reduced, the shoal renovation success probability is improved; finally the channel size can be better improved, the flow state can be improved and the silt is prevented from accumulating in the channel after obtained submerged dike data are implemented. Meanwhile, the submerged dike has the advantages of being simple in structure, fast and convenient to implement, low in implementation cost, good in strength and impact resistance and long in service life, and is suitable to be used in mountain rivers.