34results about How to "Play an anti-seepage role" patented technology

The invention discloses a modified mixed dam applicable to tailings ponds. The dam comprises a dam body, an upstream face impermeable layer, an impermeable tooth groove, a drainage piled rock prism body, an upstream face drainage layer, an upstream face inverted filter layer, an inverted filter tooth groove, a dam outer slope impermeable layer, a dam lower inverted filter layer, a dam lower drainage layer, a drainage pipe, a seepage collection pipe, a dam body and mountain contact surface impermeable layer, and a dam body and mountain contact surface drainage layer, wherein the upstream face impermeable layer is positioned among the dam body, the drainage piled rock prism body and the upstream face drainage layer; the upstream face drainage layer and the drainage piled rock prism body are positioned between the upstream face impermeable layer and the upstream face inverted filter layer; the drainage piled rock prism body is positioned below the upstream face drainage layer; the dam lower inverted filter layer is positioned between the dam body and the dam lower drainage layer; the drainage pipe is positioned in the dam lower drainage layer; the inlet of the drainage pipe is connected with the seepage collection pipe; a gate valve is arranged at the outlet of the drainage pipe; the seepage collection pipe is positioned in the drainage piled rock prism body. The dam has the advantages that local material can be adopted for damming, the damming cost is low, the running is reliable, the maintenance is convenient, and the function is comprehensive.

The invention discloses a plastering mortar admixture. The admixture is mainly prepared from raw materials in percentage by weight as follows: 5%-20% of modified calcium lignosulphonate, 1%-5% of fibers, 20%-50% of bentonite, 30%-60% of fly ash and 10%-20% of an auxiliary material, wherein the auxiliary material is prepared from cellulose hydroxypropyl methyl ether hyprolose, polyvinyl alcohol, lauryl sodium sulfate, sodium gluconate and white sugar. The admixture produced with the technical scheme is low in cost, simple to use, green and environment-friendly and realizes waste recovery; besides, construction operability of mortar is improved, mortar cracking and hollowing of the mortar are greatly reduced and prevented, and mortar strength is improved.

The invention discloses a water storage type grass planting brick for municipal environmental protection and a laying method thereof, which belong to the technical field of grass planting bricks and laying thereof. Sand and gravel seepage layer and geotextile layer, through the interconnected annular seepage cavity, water storage cavity and grass planting hole inside the brick body, the water storage cavity is used to collect natural rainwater and slowly release natural rainwater in the grass planting hole Provide water and nutrients for the vegetation, and the high-strength water-retaining cones embedded in the corners of the grass-planting holes, on the one hand, play a role in retaining the water introduced into the grass-planting holes, and on the other hand, fill the planting soil in the grass-planting holes and Vegetation grass plays a fastening role, effectively avoiding the rapid loss of water in the grass planting hole, and setting up a semicircular water passage cavity and diversion hole connected to each other, when there is too much rainfall, it can conduct and evacuate natural rainwater as soon as possible , Excessive rainwater is not easy to stay on the brick surface.

The invention discloses a construction method for a ground fissure formation tunnel deformation seam impervious structure, comprising the steps as follows: modified asphalt concrete and reinforced material are prepared as reinforced asphalt concrete flexible plate by a rolling method; the flexible plate is internally provided with resistance wires which are led out and used for expanding the deformation seam and the tunnel diameters at two sides so as to form a primary lining supporting wall rock body; the asphalt concrete flexible plate is arranged on the surface of the primary lining supporting wall rock body; two sides of the deformation seam are respectively poured by end lining with the end surface having two parallel ring-shaped trough; subsequently, the deformation seam is internally provided with reinforcing cage and poured by the asphalt concrete; the deformation seam is filled and sealed; two ends of the resistance wire is led into the tunnel by the deformation seam. The impervious structure constructed by the method of the invention utilizes the rheological property and electric heating of the asphalt concrete, prompts the rheological deformation of the asphalt concrete,and leads the surfaces of the reinforced asphalt concrete panel and the lining structure to generate the relative sliding, so as to adapt for the continuous relative staggering displacement of the adjacent lining structures.

The invention discloses a preparation process of a self-draining concrete block, which belongs to the technical field of the preparation process of concrete blocks. A hole forming device is arranged in the cavity of a pouring mold, and the concrete pouring material is introduced into the mold through the pouring port. After entering the cavity, the concrete pouring material covers the entire cavity and covers the end surface of the hole forming device. After demoulding, the obtained block body is separated from the cavity and the hole forming device, and the formed and hole forming The hole structure matching the hole forming device is beneficial to the drainage of the block body during use, and can quickly dredge a large amount of rainwater to a certain extent. The combination of tampering rods, after the concrete pouring material is poured, uses continuous and intermittent pneumatic control to realize the reciprocating expansion and contraction of multiple tampering rods, so as to vibrate the concrete pouring material and effectively improve the quality of concrete blocks.

The invention provides a water-storing and seepage-proofing rubber board and a preparation method thereof. The water-storing and seepage-proofing rubber board provided by the invention comprises a water storage layer and a seepage-proofing layer. Butyl rubber is used as a supporting and connecting material of the water storage layer, cotton thread short fibers subjected to rubber dipping treatmentand water absorbent resin SAP are added, the cotton thread short fibers are disorderly dispersed in the water storage layer, a water transport channel communicating the water absorbent resin with theoutside world is formed, and the water-absorbing and water-storing functions of the water storage layer are enhanced. Butyl rubber is used as a seepage-proofing layer, carbon black and light calciumcarbonate are added, the tear strength and the tensile resistance are improved, and the rubber board has good water seepage-proofing performance. The water-storing and seepage-proofing rubber board isused for planting trees in deserts, and is buried under roots of the trees; in rainy seasons, a large amount of water can be absorbed and stored; in dry seasons, water of the water storage layer canbe supplied for root systems to absorb slowly through the cotton thread short fibers, the application scope of the rubber board is expanded, and guaranteeing is provided for the survival rate of greenvegetation in the deserts.

The invention discloses a structure for controlling underground structure side wall cracks, comprising a concrete wall body internally provided with a structural reinforcing mesh, a steel barrel and baffles ; a deformation joint is longitudinally arranged at the concrete wall body; the steel barrel is provided with the deformation joint, the deformation joint is located in the steel barrel, the steel barrel is filled with concrete, the barrel walls on the left side and the right side of the steel barrel are connected with the concrete wall on two sides of the deformation joint to form a whole,the barrel wall on the front side and the rear side of the steel barrel extends out of the concrete wall, and the steel barrel is fixedly connected with the structural reinforcing mesh; and the baffles are fixedly arranged on the left side and the right side of the steel barrel respectively and are perpendicular to the deformation joint. According to the structure, a structural steel bar frame isfixedly connected with the steel barrel, the baffles are used for connecting concrete inside and outside the steel barrel, the steel barrel and the concrete are connected into a whole, and the overall strength and rigidity are improved. The overall safety of the structure is not damaged by insufficient strength or rigidity at the deformation joint position. Construction is simple and convenient,and implementation is convenient.

The invention belongs to the technical field of anti-seepage construction, and in particular relates to a flexible connecting and sealing bitumastic anti-seepage structure of a tunnel deformation joint and a constructing method, which can ensure the normal use of a subway tunnel under the action of fracture formation of the ground. In the technical scheme, the method comprises the following steps: laying a composite layer of modified asphalt anti-seepage plate, pouring reinforced concrete for lining, setting deformation joints, mounting flexible baffles in the deformation joints, utilizing glass fiber cloth to seal gaps of the baffles, and pouring bitumastics to fill gaps of the deformation joints. The anti-seepage structure constructed in the method has the anti-seepage performance of the composite layer of modified asphalt anti-seepage plate, the extension performance and the anti-seepage performance of the bitumastics, and the blocking function of the flexible baffles. Therefore, the anti-seepage structure can ensure the effective sealing of the joint and prevent the significant water leakage accident while fully adapting to the large-displacement slipping deformation in the positions with the deformation joints of the composite lining structure, and has high economic and social benefits.