The invention discloses a detection system and method for intestinal flora and a dynamic database. The detection system for the intestinal flora comprises: an acquisition device, an analysis and processing device, a storage device and a data processing device, wherein the acquisition device is used for acquiring information of the intestinal flora; the analysis and processing device is used for carrying out amplification processing on the acquired information of intestinal flora to obtain data of intestinal flora at every time of individual detection; the storage device is used for storing the data of intestinal flora; and the data processing device is used for comparing the data of intestinal flora of individuals at each time with the total quantity of the intestinal flora in the storage device. According to the detection system, an examinee can know self intestinal health condition composition through detection of the intestinal flora, and the examinee can know a difference value between oneself and healthy crowd, and then regulates aspects of diet, exercise, living habits and the like, thereby improving the condition of the intestinal flora and the body health condition. According to the dynamic database, the capacity of the database can be expanded in real time to obtain detection parameters of excrement of different types of people at the newest period.

Detection system and method for intestinal flora and dynamic database

The invention discloses a low-rebound rate and low-dust concrete nozzle device in anchor spray shoring engineering and relates to the technical field of the anchor spray shoring engineering. The effects of reducing the rebound rate and reducing dust can be achieved. The concrete nozzle device consists of a pulp-feeding pipe, a stirring and mixing pipe, a stabilizing pipe and a spray nozzle, wherein the pulp-feeding pipe is connected with the stirring and mixing pipe; the stirring and mixing pipe is designed to be divided into two parts; one part is a rotating surface with the inclination angle of 45 degrees; the other part is a stirring rod; a steel sleeve area is arranged in the place between the stirring and mixing pipe and an outer sleeve; a valve is arranged at the spray nozzle and consists of a valve head and a valve plate; the valve plate is arc.

Low-rebound rate and low-dust concrete nozzle device in anchor spray shoring engineering

The invention discloses a line simple drilling cutting ring undisturbed sample extracting device comprising a beam type opened cutting ring soil extracting device, a pressurizing lifting power assisting device matching with the beam type opened cutting ring soil extracting device and a cutting ring soil sample storing device. The beam type opened cutting ring soil extracting device comprises a fixed semi-closed sampling tube, one end of the fixed semi-closed sampling tube is provided with a sealing conical tube, the sealing conical tube is provided with a through hole, inside, communicated with the fixed semi-closed sampling tube, a ball valve is arranged in the through hole, the end of the sealing conical tube is provided with a connected hollow drill rod, and the sealing conical tube is provided with vent holes; the pressurizing lifting power assisting device is installed on the hollow drill rod.

Line simple drilling cutting ring undisturbed sample extracting device

The invention provides a pipe-jacking tunnel section optimization method. The pipe-jacking tunnel section optimization method comprises the following steps: firstly, pre-tunnelling is performed to enable an excavated tunnel to naturally deform, and the actual crown settlement value of a soil layer is monitored and taken as reference for follow-up judgment; crown settlement in the section shape which is the same as the excavated tunnel is calculated according to given parameters of the soil layer, the calculated value and the actual measurement value are compared, the given parameters of the soil layer conforms to the reality if the calculated value and the actual measurement value are consistent, and on the basis, inversion calculation of the overexcavation range is performed; different overexcavation section shapes are designed, crown settlements corresponding to the different overexcavation section shapes are searched repeatedly till the situation that the soil layer subjected to crown settlement is exactly right in contact with the top of a pipe-jacking pipeline without an additional clamping force, and the corresponding section subjected to overexcavation is taken as the optimal section; and crown settlements are continually monitored, the parameters of the soil layer are continually modified, and the appropriate overexcavation section shape is continually selected in the tunnelling process to ensure favorable gaps on the left and right and above pipe jacking to remove the up-and-down clamping function of the soil layer.

Pipe-jacking tunnel section optimization method

The invention belongs to the technical field of urban tunnel underground excavation construction, and particularly relates to a shallow-buried collapsible loess tunnel core soil and glass fiber anchorrod reinforcing construction method. Advanced core soil is reinforced by utilizing glass fiber grouted anchor rods, the compressive and shearing resistance ability of the advanced core soil is improved, extruding deformation of a soil body in front of a tunnel face is restricted, a reinforcing area formed by the glass fiber grouted anchor rods and advanced grouting small guiding pipes has the function of water resistance, the consolidation settlement speed of upper collapsible loess is slowed down, meanwhile, the glass fiber grouted anchor rods are easy to cut, and tunnel tunneling excavationis not affected. The core soil is reserved to exert reverse thrust to restrict strain release of stress of the front soil body, in addition, the advanced grouting small guiding pipes can form a supporting arch ring on the upper part, and collapse of soil blocks is reduced.

Shallow-buried collapsible loess tunnel core soil and glass fiber anchor rod reinforcing construction method

The invention relates to the underground engineering loess tunnel safety construction field, and especially relates to the underground engineering loess tunnel ground surface settlement control construction process with strong pertinency and simple technology; settlement deformation monitor measurements are taken so as to realize dynamic monitor measurements in tunnel excavation construction, thus providing reliable data guarantee for safety construction; measurements like advanced support, steel arch centering support and timely concrete injection are taken so as to ensure tunnel surrounding rock composition stabilization; lime soil compaction piles are used for reinforcing the loess layer, and 37 lime soil is refilled, thus greatly improving construction security and composition stability; in construction, quicklime is used for chemical modification, thus optimizing loess property, improving loess intensity, and ensuring tunnel stabilization and safety.

Underground engineering loess tunnel ground surface settlement control construction process

The utility model provides a plastic-steel grating hanging net supporting structure for an anchoring net support project. The plastic-steel grating hanging net supporting structure consists of a top bearing rack, a supporting rod and a triangular rack, wherein the supporting rod can stretch out and draw back automatically so that the height of the supporting rod can be adjusted; and the height of the triangular rack under the supporting rod can be adjusted according to the roughness of the ground. By the plastic-steel grating hanging net supporting structure, the problems of low efficiency, large labor capacity, complex construction, poor safety and the like in a support net hanging process can be solved effectively.

Plastic-steel grating hanging net supporting structure for anchoring net support project

The invention provides a novel anchor rod with high-strength steel wires and a grouting pipe in surrounded matching and a high shear resistant capacity, and belongs to the field of anchoring engineering. The anchor rod is a supporting and protecting device and mainly used for geology which has complicated geological conditions and is easy to enable the anchor rod to laterally deform. The anchor rod disclosed by the invention consists of the grouting pipe, a conical anchor head, an expansion pipe, a bowl-shaped tray, a nut and the high-strength steel wires, wherein the conical anchor head is arranged at the head of the anchor rod, the anchor rod is fixed to the high-strength steel wires together, and the high-strength steel wires closely and orderly surround the grouting pipe so as to be matched with the expansion pipe and the grouting pipe, so that the shear resistant capacity of the grouting pipe is ensured.

Novel anchor rod with high-strength steel wire and grouting pipe in surrounded matching and high shear resistant capacity

The utility model provides an antiskid anchor rod with multiple stages of elastic pieces. The antiskid anchor rod is composed of a conical closed cap (1), a steel pipe (11), the elastic pieces (2), a stop-grouting plug (6), a tray (7) and a nut (8). The antiskid anchor rod is characterized in that the conical closed cap (1) is arranged on the head portion of the steel pipe and externally provided with threads, grouting holes (3) are formed in the steel pipe (11), hook holes (10) are formed in the steel pipe (11) and located between the grouting holes (3), and elastic hooks (5) on the elastic pieces (2) extend into the hook holes (10) so that the elastic pieces (2) can be firmly connected with the steel pipe (11); the elastic pieces (2) are provided with extrusion deformation joints (9) and grouting holes (3). The antiskid anchor rod with the multiple stages of elastic pieces can effectively solve the problem that an anchor rod slips off in sludge, drift sand and other unfavorable geologic bodies.

Antiskid anchor rod with multiple stages of elastic pieces

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