The invention discloses a nanoscale automobile exhaust absorption type modified emulsified asphalt and a preparation method thereof. The modified emulsified asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 10-20 parts of nanoscale automobile exhaust absorbent, 1-4 parts of modified latex, 1-3 parts of emulsifying agent, 1-3 parts of auxiliaries and 30-40 parts of water. By using the nanoscale automobile exhaust absorption type modified emulsified asphalt and the preparation method thereof, provided by the invention, the capability of the common modified emulsified asphalt for absorbing automobile exhaust can be improved or enhanced, and cold mixing and cold paving mixtures for a micro-surface, a thin slurry seal, a broken stone seal and the like can be widely applied to a bridge deck pavement layer, a tunnel pavement, an airport pavement and all-grade pavements, thus not only is the pavement performance of the asphalt material not affected, but also the exhaust absorption performance of the asphalt mixture can be improved.

Nanoscale automobile exhaust absorption type modified emulsified asphalt and preparation method thereof

The invention relates to the road roadbed construction maintenance field, and concretely relates to a local reconstruction and restoration method of a soft soil roadbed soil sliding failure vacuum system The method comprises the processes of roadbed anti-slide treatment, and local reconstruction and restoration treatment of the vacuum system; the roadbed anti-slide treatment process comprises the following steps: 1, unloading earthwork in the damaged area of the vacuum system in a layered grading manner, and 2, arranging a back pressure band; and the local reconstruction and restoration treatment of the vacuum system comprises the following steps: 1, sealing wall section seams, 2, restoring a plastic drain board, 3, restoring the geotechnical material of the vacuum system, 4, carrying out test evacuation and section monitoring of the vacuum system restored in step 3, 5, carrying out layered filling recovery of a road embankment, and 6, using geotechnical grills to reinforce the self-stability of the system The method has the advantages of strong maneuverability, short repairing time, fast effectiveness, low cost, provision of feasible methods and measures for environmental protection and pre-control, and huge economic and social benefits

Local reconstruction and restoration method of soft soil roadbed soil sliding failure vacuum system

The invention provides a method and a device for lifting roadbed settlement of the existing road. The method comprises the following steps: horizontally inserting a plurality of plate-shaped lifters capable of performing one-dimensional expansion into the roadbed sequentially according to the position and the quantity required by the design in the zone where the roadbed of the road is settled non-uniformly and in the certain distance below the contact interface between the road surface and the foundation, wherein the lifters are gradually expanded vertically according to the sequence, and the expansion rate and the expansion amplitude required by the design, so that the settled roadbed is lifted and recovered to the roadbed design target value; sequentially substituting block materials with sufficient strength and grouting holes for the plate-shaped lifters; and injecting a proper amount of known gel materials so as to fill the gap of the block materials, form holes in soil in the lifting process and fulfill the aim of lifting the roadbed settlement of the existing road.

Method and device for lifting roadbed settlement of existing road

The invention provides a drill boom of a multi-directional driller, which comprises a main swinging boom, a swinging rotating boom, a drill boom adjusting mechanism and a drilling mechanism, wherein the main swinging boom and the swinging rotating boom form a drill boom controllable multi-directional adjustable main boom capable of raising, falling, swinging and rotating, the drill boom adjusting mechanism consists of a front sliding carriage and a rear sliding carriage, the front end of the swinging rotating boom is connected with a rear sliding base, the rear sliding base is matched with the rear sliding carriage, the rear sliding carriage moves in a controllable manner along the rear sliding base, the rear end of the drilling mechanism is connected with a front sliding base, and the front sliding base is matched with the front sliding carriage and moves in a controllable manner along the front sliding carriage. The drill boom is driven by adopting a hydraulic mechanism, is suitable for coal mine underground coalroad tunneling work and has the advantages of compact structure, good flexibility and simpleness for operation.

Drill boom of multi-directional driller

The invention relates to engineering machines, in particular to a hydraulic rock drilling machine The hydraulic rock drilling machine is composed of a hydraulic carrier machine A and a drilling machine B The hydraulic carrier machine A is an excavator, or a loader or a forklift, and according to the hydraulic rock drilling machine, a working device at the front end of the hydraulic carrier machine A serves as a machine base Hydraulic oil provided by a hydraulic system of the hydraulic carrier machine and a selectively matched air compressor are used as power sources, and the drilling machine B is installed at the front end of the working section of the hydraulic carrier machine A The working device at the front end of the excavator, or the loader or the forklift is adopted as the machine base in cooperation with the drilling machine to perform rapid and efficient rock drilling The hydraulic rock drilling machine is rapid and convenient to install and detach, easy to maintain, low in cost and high in efficiency

Hydraulic rock drilling machine

The invention relates to a tech method for treating defect in a roadbed Wherein, pile holes are bored on the roadbed; the holes are arranged as plum blossom piles, distance between piles is 1 m The diameter of pile hole is 10-20 cm depending upon the water content, generally the diameter is 15 cm The depth of pile hole is 1-3 m into the original road surface, generally the depth is 2-3 m depending upon the disease in the roadbed The bottoms of the pile holes are tamped Cement and gallets that are mixed evenly by a mixture machine are used, which is the mixture of C30 concrete from 325Rplain Portland cement and gallets; the cement and gallets are filled in the pile holes; the cement and gallets are tamped while filling, that is, 25-30 cm thick is laid evenly each time, a hammer more than 120 kg are fallen 7 times with a falling distance more than 100 cm to tamp the cement and gallets When the filling is up to the road surface, C30 expansion concrete is used to vibrate tight the surface, then the surfaces are smoothened, holes are closed Backfilling shall be done immediately after each hole

Technique method for processing subgrade disease

The utility model mainly aims to provide a drilling rig which does not change the drill pipe with good stability. The utility model is a hydraulic pressure telescopic portal frame type drilling rig; a drill pipe is connected with a power source output shaft; the power source is fixed on a power combinational frame; the power combinational frame is fixed on a sliding block frame; the sliding block frame is connected with the portal frame by a sliding rail pair; the portal frame is fixed on a lifting mechanism; the lifting mechanism is fixed on the chassis of a motor vehicle; the upper part of the lifting mechanism and the upper part of the sliding block frame respectively are fixed on the two ends of the traction string; the traction string is surrounded on a traction string wheel on the top of the portal frame. The key point of the utility model is that the stable sliding principle of the lifting fork vehicle arm mechanism of the prior technology is applied and a dismountable coupling is mounted between the drill pipe and the power source output shaft. Compared with the prior technology, as a long journey drill pipe is applied, the repeated replacement of the drill pipe and the repeated regulation of the aligned stake number are avoided.

Hydraulic telescopic door frame type drill

The utility model relates to a temperature measuring tool, in particular to an underground temperature measuring instrument. The measuring instrument comprises a measurer, a conduction pathway, a display and a power source, wherein, the measurer is a temperature sensor, the display is a temperature display, the conduction pathway is a connection conducting wire, and the temperature display connected with the power source is connected with the temperature sensor through a conducting wire; the measurer further comprises a measuring electrode and a temperature sensor; the display further comprises an alarm; the measuring electrode connected with the power source is connected with the alarm through a conducting wire; and indicating scales are carved on the conduction pathway. The measuring instrument can conveniently measure the temperature the underground at a certain depth, and automatically conducts audible and visual alarm when contact with liquid and meanwhile displays the temperature, thereby analyzing the underground conditions; and furthermore, the measuring instrument is widely applied to macroscopic abnormity measurement of earthquake, daily observation, earthquake prediction, accident investigation and geological survey, and has the characteristics of convenience, rapidity and accuracy.

Underground temperature measuring instrument

The invention provides an emulsified bitumen modifying agent with wide range and high viscidity and modifying property. The first group of modifying agent is made up of polyolefine with a molecule weight of between 1800 and 2200 and a weight percentage of between 80 and 90 percent and polyacrylamide serving as an anchoring agent; the second group of modifying agent is made up of SBR rubber latex with a solid content of between 35 and 45 percent and a weight percentage of between 95 and 99 percent and dextrine serving as a stabilizing agent. The use method is as follows: (1) 100 weight portions of hot bitumen at the temperature of between 130 and 140 DEG C is added into 1.8 to 2.2 weight portions of the first group of modifying agent and is stirred to make the modifying bitumen; (2) latex made up of 51 to 63 weight portions of modifying bitumen and 30 to 40 weight portions of water as well as 0.8 to 1.2 portions weight portions of emulsifier is passes through an emulsifying jug, a bitumen jug, a colloid mill and a measuring system to make modifying emulsified bitumen; (3) 10 to 12 weight portions of the second group of modifying agent is added into 100 weight portions of modifying emulsified bitumen and is stirred to make the emulsified bitumen modifying agent with wide range and high viscidity and modifying property.

Lei Li

Papers

Technique method for processing subgrade disease

Hydraulic telescopic door frame type drill

Underground temperature measuring instrument

Emulsified bitumen modifying agent with wide domain and high adhered modification, usage and prepared bitumen