53results about How to "Facilitate construction quality control" patented technology

The invention discloses a light refractory castable material for a heat insulation lining of a cast steel plate (CPS) furnace roller. The light refractory castable material comprises the following components by weight percent: 40-50% of light mullite bone material, 5-8% of flint clay with a particle size of 0.1-1mm, 5-7% of kyanite powder, 6-9% of first-class bauxite chamotte with a particle size of less than or equal to 180 meshes, 7-9% of silicon micro powder, 5-8% of alpha-Al2O3 micro powder, 10-18% of bauxite cement, 1-4% of refractory fiber, 1-1.5% of spodumene, 0.05-0.154% of sodium hexametaphosphate, 0.05-0.15% of organic water reducing agent, 0.04-0.07% of organic silane coupling agent and 0.013-0.06% of defoaming agent. The refractory castable material has the characteristics of light volume weight, strong high temperature resistance, good mechanical property, good heat insulation property and excellent thermal shock stability performance.

The invention discloses a slope protection pile pouring and cable bolting construction method for a deep foundation pit. The method comprises the following steps of: 1, making preparations before construction; 2, pouring a slope protection pile, namely measuring, paying off, molding and constructing the poured slope protection pile, punching holes on the poured slope protection pile, binding and hoisting a steel reinforcement cage for molding the slope protection pile, pouring concrete into the poured slope protection pile and constructing a crown beam at the top end of the pile; and 3, excavating a foundation in a layered form and constructing anchor ropes on different rows, namely excavating a first-layer foundation, arranging a first row of anchor ropes, arranging a steel waist rail, arranging anchor heads of the anchor ropes, tensioning the anchor ropes and finishing excavating processes of different layers of foundations and arranging different rows of anchor ropes. The method has a reasonable design, simple construction steps, low investment cost, large support depth and good using effect, and solves the problems of complicated construction steps, high construction cost, inconvenience in control, easy damage to surrounding pipelines, roads, buildings and the like, large construction space and the like existing in the conventional double-row pile supporting method can be solved.

The invention discloses a method for reinforcing a circular pipe culvert by adopting HDPE winding reinforcing tubes and cement mortar. The method comprises the following steps: 1, arranging a lining pipe in the circular pipe culvert; 2, arranging a conveying pipe and an exhaust pipe, specifically, extending the conveying pipe and the exhaust pipe into a ring cavity; 3, sealing the ring cavity, specifically, laying a first block end wall used for sealing one end of the ring cavity at the water inlet of the circular pipe culvert, and the conveying pipe passing through the first block end wall; laying a second block end wall used for sealing the other end of the ring cavity at the water outlet of the circular pipe culvert, and the exhaust pipe passing through the second block end wall; and 4, injecting the cement mortar into the ring cavity through the conveying pipe, to form a filling reinforcing layer. By applying the method, the circular pipe culvert can be effectively reinforced, the cross-sectional area of bearing components of the culvert can be increased, and the bearing capacity of the culvert is improved.

The invention discloses a shield tunnel end microorganism reinforcing structure and a construction method thereof. According to the reinforcing structure, a microorganism reinforcing area is arranged at the front end of an envelope structure, and a vertical tube s arranged on the side, close to the envelope structure, of the microorganism. The range of the microorganism reinforcing area is that the up-down distance of the cross section of a tunnel is the distance from the position 3.0 m lower than the bottom of the outer diameter of a shield tunneling machine to the ground, the left-right distance of the cross section of the tunnel is the distance from the position 3.0 m away from the left side of the outer diameter of the shield tunneling machine and the position 3.0 m away from the right side of the outer diameter of the shield tunneling machine, and the longitudinal reinforcing length of the longitudinal section direction of the tunnel is that sum of the length of a shield tunneling machine main body and 2-3 times of the width of a tube piece. The construction method comprises the first step of construction of the microorganism reinforcing area, the second step of construction of a heating circulation system, the third step of construction of vertical freezing, the fourth step of removing of freezing tubes. The shield tunnel end microorganism reinforcing structure and the construction method thereof have the advantages that the problem that the reinforcing effect through the conventional reinforcing mode in the area is not good is solved, and it can be guaranteed that the shield tunneling machine can come out of a hole smoothly.