94 results about "Soil nailing" patented technology

The invention discloses a hypha network reinforced ecological slope protection structure and a construction method.The hypha network reinforced ecological slope protection structure comprises a plurality of ecological soil nails arranged on a side slope, and each ecological soil nail comprises a soil nail head located outside the side slope; a hollow shell extending into the slope is arranged at one end of the soil nail head, a grouting hole communicated with the hollow shell is formed in the soil nail head, and a plurality of leakage holes are formed in the surface of the hollow shell; a plurality of ecological panels are arranged on the inclined face of the side slope, and the ecological soil nails are filled with grouting liquid with hypha spores. An assembly type structure frame is formed by inserting and matching the ecological panels and the ecological soil nails, grouting liquid with spore bags is injected, after the spore bags are activated, mycelium is combined in a winding mode in the growth process, and a high-ductility biological fiber network structure is constructed between soil particles and components. And the structural integrity and the shear resistance and disturbance resistance of the side slope are improved.

The application discloses a kind of segmented excavation construction methods combined with soil nailing wall support, belong to foundation pit support technical field, solve the technical problem that existing segmented excavation is difficult to control, and the safety risk caused by the sudden change of stress of supporting structure is caused by foundation pit deformation.It includes: dividing N excavation layers, setting each layer excavation depth and soil nail length;Layer by layer excavation, construction soil nail and shotcrete surface layer, and install displacement sensor and axial force sensor at the end of soil nail;After reaching the preset strength, read the cumulative horizontal displacement, current displacement rate and axial force increment;Compare with preset threshold respectively, if any is out of limit, then reduce the next layer excavation depth and increase the soil nail length, otherwise, construction according to original design parameters;Repeat until all excavation layers and support are completed.The application is mainly used for the segmented excavation construction of foundation pit in soft or sensitive stratum, can dynamically adjust the support parameters according to real-time monitoring data, effectively control the deformation of foundation pit, and improve the safety and adaptability of construction.

The application discloses a cantilever type side wall self-stabilizing system applied to deep foundation pit support and a construction method thereof, which comprises two water-stopping curtains, support piles, concrete slope protection, a plurality of soil nails arranged in the concrete slope protection, a corbel arranged at the top of the support piles, and a wet lean concrete layer arranged at the inner side of the support piles, further comprises a box culvert of a lower passageway, a plurality of rows of additional support steels arranged at intervals are arranged in the structural steel of the box culvert of the lower passageway, and the box culvert of the lower passageway comprises a lower passageway bottom plate, a lower passageway top plate and two lower passageway side walls; one end of the additional support steel is inserted into the lower passageway side wall, the other end of the additional support steel is arranged through the vertical side wall section of the lower passageway bottom plate, and is bent and inserted into the horizontal bottom wall section of the lower passageway bottom plate, so as to ensure the bending bearing capacity of the lower passageway bottom plate; thus, the existing technology of the inverted support structure can be replaced, the pressure of the side wall panel is smaller, the rigidity and the anti-seismic capacity of the overall structure are improved, and the construction period can be obviously shortened.

The utility model relates to the technical field of soil nailing walls, in particular to a soil nailing wall supporting structure which comprises a foundation pit, a drainage ditch is formed in the bottom end of the foundation pit in a penetrating mode, a filter screen is arranged at the top of the drainage ditch, a sliding groove is formed in the side, close to the top of the filter screen, of the drainage ditch, and a sliding block is arranged in the sliding groove. A scraping plate is fixedly mounted on the side, close to the filter screen, of the sliding block, the bottom of the scraping plate makes contact with the top of the filter screen, and a connecting plate is fixedly mounted on one side of the sliding block; according to the scheme, the scraping plate is arranged, impurities on the filter screen can be regularly removed, it is ensured that the filter screen keeps good drainage performance all the time, the problem of unsmooth drainage caused by blockage is solved, the complexity and frequency of maintenance of the soil nailing wall are reduced, and therefore the whole supporting structure is stabilized; the service life of the filter screen can be greatly prolonged, the frequency and cost of replacing the filter screen are reduced, the maintenance cost is reduced, and the working efficiency is improved.

The utility model provides a soil nail steel sheet pile composite supporting device suitable for a deep foundation pit. The soil nail steel sheet pile composite supporting device comprises a steel sheet pile assembly; the sleeve is arranged on one side of the steel sheet pile assembly; the soil nail assembly is arranged in the casing pipe; the gasket is arranged on the outer side face of the soil nail assembly in a sleeving mode; the nut is in threaded connection with the outer side face of the soil nail assembly. According to the soil nail steel sheet pile composite supporting device suitable for the deep foundation pit, the installation ring, the connecting ring, the installation frame, the sliding rod, the spring, the baffle, the check ring, the penetrating groove and other structures are matched with one another, after grouting is completed, elasticity of the spring can push the baffle, and therefore the baffle blocks the penetrating groove, and the soil nail steel sheet pile composite supporting device is convenient to use. In this way, slurry entering the soil nail assembly can be prevented from flowing out, and the grouting effect of the soil nail assembly is improved.

The invention discloses a narrow site working condition deep foundation pit supporting system and a construction method thereof.The narrow site working condition deep foundation pit supporting system comprises a pouring pile and a composite soil nailing wall, the composite soil nailing wall is arranged on the top of the pouring pile, a steel bar mesh is arranged on the top of the pouring pile, a plurality of steel bar soil nails are arranged on one side of the steel bar mesh, and the steel bar mesh is fixed through the steel bar soil nails; a steel pipe inclined support is arranged on one side of the pouring pile, a bottom plate is arranged on one side of the pouring pile through concrete pouring, a counter-force pier is arranged on one side of the bottom plate, and the steel pipe inclined support is fixed through the counter-force pier; the composite soil nailing walls and the steel pipe inclined supports are arranged, and the multi-aspect construction mode of the composite soil nailing walls, the cast-in-place piles and the inclined supports is adopted during construction, so that construction of supporting of the deep foundation pit in the narrow and small site is achieved under the working condition of the narrow and small site under the condition of not occupying a municipal road protection underground pipe network.

The utility model belongs to the technical field of foundation pit supporting engineering construction, and particularly relates to a soil nail reinforcing device for a composite soil nail wall supporting system. The fixing parts are linearly arrayed on the side wall of the soil nail in the central axis direction of the soil nail; the positioning clamp is arranged between the fixing parts and is connected with the fixing parts; and the fixing part is tightly held on the side wall of the soil nail through the annular clamp. The soil nailing wall supporting structure solves the problems that due to the fact that an existing soil nailing wall supporting structure adopts the mode that a positioning clamp is welded to a soil nail, the problem that the positioning clamp falls off due to the fact that a welding seam is not fused exists, the engineering quality of a composite soil nailing wall supporting system is affected, and serious potential quality hazards are caused.

This invention belongs to the field of geotechnical slope engineering technology, and provides a prefabricated slope soil nailing pipe based on self-circulating heat exchange technology and its construction method. The pipe includes a soil nail shell; a heat exchange assembly, which is disposed inside the soil nail shell and includes a thermosiphon rod and a heat exchange mechanism. The thermosiphon rod is located at the bottom of the soil nail shell, and the heat exchange mechanism is connected to the thermosiphon rod. The heat exchange mechanism absorbs and releases the heat transferred by the thermosiphon rod outward through the soil nail shell. A gravity-promoting drive component is installed inside the heat exchange mechanism to accelerate the flow of the heat exchange medium within the mechanism, ensuring heat exchange between the soil nail shell and the heat exchange mechanism even when the shell is not vertical; and a heat dissipation assembly, which is disposed inside the soil nail shell and connected to the heat exchange mechanism. The heat dissipation assembly releases the heat dissipated by the heat exchange mechanism into the air. This invention can provide stable support for slopes in cold regions and frozen soil beneath the slope.

The utility model discloses an anchoring steel bar for supporting a soil nailing wall, and relates to the technical field of soil nailing wall construction. The anchoring steel bar comprises an anchoring steel bar body, one end of the anchoring steel bar body is rotationally provided with a reverse buckling steel bar, the anchoring steel bar body is further provided with a buckle steel plate in a sliding mode, and the buckle steel plate corresponds to the reverse buckling steel bar. And the buckle steel plate moves towards the direction of the reverse buckle steel bar, so that the reverse buckle steel bar is rotated and opened until the reverse buckle steel plate is matched with the buckle steel plate for limiting, and the reverse rotation of the reverse buckle steel bar is avoided. The anchoring steel bar has the advantages that the rotatable reversely-buckled steel bars are arranged on the anchoring steel bar body and matched with the buckle steel plates arranged in a sliding mode, an effective locking mechanism is formed, and when the buckle steel plates move towards the reversely-buckled steel bars and are clamped, the reversely-buckled steel bars can rotate to be opened and are firmly inserted into the soil body; the connection strength and the overall stability between the anchoring steel bar and the soil body are remarkably enhanced, and the steel bar is effectively prevented from loosening or being pulled out of the soil body.

The invention discloses a deep foundation pit supporting structure of a soil nail retaining wall under integral row pile supporting and a construction method. The deep foundation pit supporting structure is suitable for deep foundation pit engineering of an underground pipeline crossing area. The structure comprises a top beam, row pile assemblies, soil nail assemblies and a reinforcing mesh structure, the row pile assemblies are constructed on the two sides of a projection area of the underground pipeline, an overall stress system is formed through embedded steel bars and the reinforcing mesh structure, reverse pouring is achieved in combination with a lengthened guide pipe, and pipeline migration is avoided. According to the construction method, layered excavation, instant supporting and jumping methods are adopted for hole forming, soil nail assemblies are arranged in a quincunx shape, prestress is applied, and the deformation of a pipeline area is controlled to be smaller than or equal to 30 mm. The problems that traditional supporting is interrupted, the pipeline migration cost is high, and the construction period is long are solved, the supporting integrity is enhanced, the construction period is shortened, the engineering cost is reduced, and the method is suitable for deep foundation pit engineering under the urban dense pipeline environment.

The utility model relates to the technical field of soil nailing walls, and discloses a soil nailing wall supporting assembly which comprises an overturning plate, an adjusting assembly is arranged on the outer side of the overturning plate and used for adjusting the angle according to conditions, and sliding assemblies are arranged on the inner sides of the two ends of the adjusting assembly and used for adapting to different soil nailing positions. The adjusting assembly comprises an adjusting nut, and the adjusting nut is located on the inner side of the overturning plate. According to the soil nailing wall supporting assembly and the soil nailing wall, the adjusting assembly is installed, a mounting position can be provided for the structure on the outer side through a turnover plate, an adjusting nut on the inner side can control an adjusting screw rod to rotate synchronously through rotation, and the adjusting screw rod drives an adjusting plate to move in the rotating process; and after moving, the width of the foundation pit platform can be adjusted to meet different requirements, after adjustment, the protruding guide insertion rods can be directly inserted into the soil nailing wall, and the flexibility is greatly improved to use different soil nailing walls.

The utility model provides a soil nail combination connecting structure, which relates to the technical field of building accessories, comprises a soil nail body, a first positioning plate and a second positioning plate, and is characterized in that a lubricating oil hole is formed in the top surface of the first positioning plate, a sealing plug is mounted on the inner surface of the lubricating oil hole, a soil nail positioning hole is formed in the center of the first positioning plate, and a soil nail is arranged in the soil nail positioning hole. A second positioning plate is arranged at the bottom of the first positioning plate, a mounting threaded hole is formed in the surface of the second positioning plate, a first spring corrugated pipe is mounted at the top of the second positioning plate, a second spring corrugated pipe is arranged in the middle of the surface of the second positioning plate, and through combination of the spring corrugated pipes and a damping guide rod, the damping performance is remarkably enhanced; and through combined installation of the adjacent connecting assemblies, the anti-load capacity of the geotechnical wall can be greatly improved, and the safety of a construction site is further improved.

The present application relates to the technical field of positioning devices for construction, and discloses a prestressed concrete pipe pile construction positioning device, comprising a fixed frame, the bottom of which is fixedly connected to a plurality of soil nails, the top of which is slidably engaged with a plurality of lifting plates, the top of which is provided with a plurality of guide plates, the inner side of which is provided with an adjustment mechanism, the inner side of which is provided with a support mechanism for supporting a welding gun, the support mechanism comprising a lifting ring. The present invention drives the guide roller to rise before the pile is connected through the adjustment mechanism in conjunction with the guide plate transmission, thereby cooperating with the No. 1 electric push rod to position and center the pile body of the connected pile, and subsequently following the connected pile body to move synchronously and connect with the pile body at the bottom, thereby adjusting the height of the lifting ring according to the height of the top surface of the bottom pile body, facilitating the subsequent support block of the corresponding height to assist in the pile connection operation, thereby improving the overall pile delivery efficiency and pile pressing quality.

The invention relates to the technical field of building construction, in particular to a foundation pit supporting structure in an ultra-deep sludge state and an earth excavation construction method.The foundation pit supporting structure in the ultra-deep sludge state comprises a foundation soil nailing wall, the foundation soil nailing wall comprises a slope surface and a platform surface, a single-shaft stirring pile waterproof curtain is arranged below the platform surface, and a reinforcing soil body is arranged below the single-shaft stirring pile waterproof curtain at the bottom; a positioning ring is arranged on the top surface of the platform surface; the construction method has the beneficial effects that the positioning ring is arranged on the platform surface, and the inner ring opening of the positioning ring definitely defines an area in which the single-shaft stirring pile is required to be constructed as the water cut-off curtain. The conical heads fixed to the bottom face of the lifting ring penetrate through the bottom plate of the positioning ring and then are inserted into the surface of the platform face, the positioning ring is firmly limited to the platform face, displacement of the positioning ring in the construction process is effectively avoided, and therefore precise fixed-point limiting of the single-shaft stirring pile serving as a water cut-off curtain in construction is achieved; the construction quality of the water cut-off curtain is guaranteed, and the waterproof performance of the foundation pit is improved.

The application relates to a construction method of a foundation pit slope assembled protection structure, and the method comprises the following steps: S00, slope excavation and slope edge pressing; S10, soil nail hole or anchor rod hole construction; S20, ecological ring protection slope drainage system construction; S30, soil nail or anchor rod installation; S40, GRF green protection surface layer construction; S50, fixed GRF green protection surface layer; S60, flexible cable net installation; and S70, shaped soil nail connecting sleeve or shaped anchor rod connecting sleeve construction. The application can effectively protect the foundation pit slope from external factors, prevent accidents such as soil collapse or landslide, and has a wide application prospect.

This invention provides a method for microbial soil nailing slope reinforcement based on microbial-induced calcium carbonate precipitation, belonging to the field of geotechnical engineering technology. The invention involves drilling holes in the slope surface and filling these holes with calcareous sand. A slurry containing urease-producing bacteria is injected into the calcareous sand-filled holes, and the mixture is allowed to stand. Then, a cementing liquid is injected to induce microbial calcium carbonate precipitation, resulting in a microbial soil nailed slope reinforcement. This invention creatively combines MICP technology with soil nail structure, using MICP technology to replace traditional cement grouting. This generates calcium carbonate crystals that cement the calcareous sand and surrounding soil, reducing the swelling and shrinkage of expansive soil under rainwater conditions. It inhibits slope surface collapse under alternating wet and dry conditions and reduces the possibility of shallow landslides during these processes. Simultaneously, it improves the shear strength and pull-out resistance of the nail-soil interface, reducing environmental pollution.

The utility model relates to a convenient connecting device for a soil nail grouting pipe, which comprises an inner pipe, an outer pipe and a connecting device, the inner pipe is hermetically connected in the outer pipe through the connecting device, and the connecting device comprises an extrusion nut, an extrusion ring, a limiting table and a sealing sleeve; a limiting table protruding outwards is arranged at the bottom of the inner pipe, the sealing sleeve is of a deformable structure, the inner pipe is sleeved with the sealing sleeve, the sealing sleeve is located on the limiting table, and the inner pipe is sleeved with the extrusion ring in a sliding mode, and the extrusion ring is located on the upper portion of the sealing sleeve. An external thread section is arranged on the upper portion of the inner pipe, and the extrusion nut is connected to the external thread section in a threaded mode and located on the upper portion of the extrusion ring so as to exert acting force on the extrusion ring from the upper portion, so that the sealing sleeve deforms. The grouting pipe is simple to operate, easy to connect and disassemble, reliable in connection and not easy to loosen, and ensures the safety of construction workers, and the bearing pressure of the grouting pipe is ensured.

The utility model provides a sloping hanging net guniting soil nailing wall supporting structure which comprises pre-stressed anchor rods, soil nails, a hanging net, a safety fence and channel steel, the soil nails and the pre-stressed anchor rods are arranged on the slope surface of a deep foundation pit in a penetrating mode, a plurality of rows of soil nails are arranged at intervals in a penetrating mode, a plurality of pre-stressed anchor rods are arranged at intervals in a penetrating mode, and the hanging net is laid on the slope surface of the deep foundation pit. The soil nails and the pre-stressed anchor rods penetrate through the hanging net, a concrete layer is sprayed on the surface of the hanging net and wraps the hanging net, the soil nails and the pre-stressed anchor rods, a safety fence is arranged on the upper portion of the slope of the deep foundation pit, the pre-stressed anchor rods are formed by connecting two steel channels in parallel to serve as a waist beam, and the sloping ratio of the slope of the deep foundation pit is 1: 0.5; the slurry strength of cement slurry adopted by the concrete layer is M25, and the spraying thickness is 80 mm. The soil nailing wall supporting structure for slope setting, net hanging and guniting is high in overall supporting structure strength and capable of effectively resisting tensile stress and lateral pressure of a soil body.

This invention discloses a construction method for soil nailing walls used in geological disaster control, relating to the field of geological disaster control technology. The method includes: S1, environmental survey and construction design; S2, bottom layer spraying and drilling; S3, moisture-proofing treatment of the holes; S4, soil nail placement and grouting; S5, installation of reinforcing mesh and drainage pipes; and S6, concrete surface spraying. This construction method for soil nailing walls not only includes drainage pipes for drainage but also provides moisture-proofing treatment for the holes. A steel mesh cylinder is placed inside the holes and coated with prepared diatomaceous earth. This improved construction process not only drains water that accumulates in the soil layer but also absorbs moisture from the inner walls of the holes. Combined with the isolation effect of the waterproof layer, it prevents the reinforced soil nails from being in a damp environment for extended periods, thus preventing corrosion and peeling of the protective layer on the soil nail surface. This reduces soil nail corrosion, lowers maintenance and replacement costs, and maintains the structural stability of the original soil nailing wall, improving the slope reinforcement effect.

The utility model provides a pre-stressed anchor rod composite soil nail wall supporting structure which comprises a net hanging concrete layer, a retention wall, soil nails and pre-stressed anchor rods, the retention wall is arranged on the top of a side slope, the bottom of the retention wall is connected with a net hanging guniting layer, a net hanging concrete layer is arranged on the surface of the side slope, and the soil nails and the pre-stressed anchor rods are evenly distributed on the net hanging guniting layer. The slope of the slope protection is 1: 0.5, the inclination angle of the soil nail is 15 degrees, concrete with the thickness of 80 mm is sprayed on the surface of the net hanging concrete layer, the inclination angle of the pre-stressed anchor rod is 15 degrees, channel steel is arranged on the two sides of the pre-stressed anchor rod, the middle of the channel steel on the two sides is connected with a steel plate, and the pre-stressed anchor rod is locked on a steel base plate on the top of the channel steel through a high-strength screw cap and fixed in a slope soil body through a centering support. The pre-stressed anchor rod composite soil nailing wall supporting structure is high in stability, high in bearing capacity and low in overall cost.

The utility model relates to resource and environment technical field, specifically disclose an ecological revetment device for resource and environment technology, including the revetment mechanism that is located on the revetment body, the revetment mechanism includes revetment base layer, is constituted by the steel mesh frame that crisscrosses vertically and horizontally, the concrete beam that is poured on the steel mesh frame and the soil nail that is anchored in the revetment body and is penetrated through concrete beam and steel mesh frame, mortar rubble protection layer is located revetment base layer outside, the top of mortar rubble protection layer extends and forms the protection eave that is higher than the top of revetment body, the protection eave top is equipped with the water collecting tank of arc shape, the water collecting pipe that is parallel with the slope surface of revetment body is in the inclinedly buried of mortar rubble protection layer multiple, this ecological revetment device passes through dynamic drainage and planting linkage system and modularization anti -skidding planting structure, has realized the efficient discharge of slope runoff and the synergic rainwater resource utilization, has strengthened the three -dimensional anti -skidding stability of planting unit simultaneously, has improved the ecological benefit and engineering safety of revetment significantly.

The application discloses a kind of slope support construction methods, it is related to slope support technical field.The slope support construction method includes that earthwork is excavated, reduces current elevation and forms first slope;Column slab wall construction is carried out on the first slope;Earthwork is excavated to the reserved platform elevation in layers, and the reserved platform is used for subsequent construction support pile;With first slope rate, the earthwork of the end of reserved platform away from the column slab wall is excavated in layers and is made to form second slope, and uses composite soil nailing wall to temporarily support the second slope;With second slope rate, the earthwork of the side of second slope away from the reserved platform is excavated in layers and is made to form third slope and foundation pit;Support pile is constructed at reserved platform;Second slope is excavated to planned road surface design elevation in layers.The slope support construction method of the application can effectively shorten construction period and improve construction efficiency.

The present invention relates to the field of slope engineering technology and discloses a force calculation method, device, equipment, and storage medium for a combined structure of soil nailing walls between piles on a slope. The force calculation method for the combined structure of soil nailing walls between piles on a slope comprises the following steps: S100: analyzing the shape and size of horizontal soil arches between piles; S200: calculating the load of anti-sliding piles; S300: calculating the load of soil nailing walls; and S400: dividing the soil nail anchoring section and the free section according to the load of the soil nailing walls. The force calculation method for the combined structure of soil nailing walls between piles on a slope takes into account the influence of the soil arch effect on the force of the soil nailing walls between piles. On the one hand, it can explain the influence of the soil arch on the force distribution of the combined structure of anti-sliding piles + soil nailing walls; on the other hand, it can optimize the layout of soil nails and more accurately divide the free section and the anchoring section of soil nails, thereby optimizing construction, improving construction efficiency, and reducing construction costs.

The invention relates to the technical field of building construction, in particular to a narrow site foundation pit excavation supporting method which comprises the following steps: step 1, earth excavation; 2, side slope net hanging and guniting; thirdly, soil nail holes are drilled; fourthly, a supporting sleeve is installed; fifthly, soil nail steel bars are installed; the step one to the step five are repeated until the bottom elevation of the foundation pit is achieved through construction; and after construction of the subsection project of the foundation pit area is completed and before backfilling operation of the foundation pit is carried out, grouting is carried out in the soil nail holes to seal the first forming section. The water permeable holes are formed in the supporting sleeves, after excavation of the foundation pit is completed, each supporting sleeve can become a miniature dewatering well, compared with the prior art, the point location, the number and the distribution of the dewatering wells are not limited by a narrow slope top working face any more, and a dense matrix type dewatering network covering the whole foundation pit slope is formed; therefore, the dewatering efficiency is greatly improved, and the stability of the slope soil body in the construction of the subsection project of the foundation pit is guaranteed.

The utility model belongs to the technical field of geotechnical engineering, and discloses a green assembly type flexible surface layer soil nail supporting structure capable of rapidly and directionally draining, which comprises an anchor rod anchoring component and an assembly component which are arranged on a side slope, the assembly component is respectively arranged on the slope top, the slope surface and the slope bottom of the side slope, and the anchor rod anchoring component is used for fixing the assembly component on the side slope. The assembly component sequentially comprises a surface layer material, a geotechnical composite layer material layer, a first silking layer, an impermeable film, water guide ribs and a second silking layer from outside to inside, the water guide ribs are of a plurality of cylindrical structures, and a drainage channel is formed among the water guide ribs, the impermeable film and the second silking layer; according to the scheme, the water guide ribs are designed to be of a plurality of cylindrical structures, a drainage channel is formed among the water guide ribs, the waterproof film and the second silk-made layer, so that water flows in the drainage channel, and the drainage effect is improved; the environment-friendly assembly supporting structure solves the problem that an existing environment-friendly assembly supporting structure is poor in drainage effect.

The utility model relates to the technical field of foundation pit excavation slope supporting, in particular to an openable soil nail which comprises a rod body and an opening assembly installed on the rod body. A conical head is mounted at one end of the rod body; the diameter of the conical head is greater than that of the rod body; the opening assembly comprises an installation block arranged on the rod body in a sleeving mode and a plurality of fan blades installed on the installation block, and the multiple fan blades are arranged around the conical head and clamp the conical head in the center. The problem that the anchoring depth is not enough due to the fact that the slope gradient is large and is close to a red line can be effectively solved, meanwhile, the anchoring strength is improved, the number of soil nails used by a slope is reduced, and the purposes of reducing cost and saving steel are achieved.

The invention discloses a slope protection soil nail mechanical hammering installation tool in the technical field of slope protection engineering application tools, and the slope protection soil nail mechanical hammering installation tool comprises a hammering rod and a hammering head, and further comprises a clamping assembly, and the clamping assembly pushes a clamping piece of the clamping assembly through hydraulic oil to clamp the hammering head; the liquid storage assembly is used for injecting hydraulic oil into the clamping assembly or receiving the hydraulic oil discharged by the clamping assembly; the valve assembly is used for cutting off hydraulic oil circulation between the liquid storage assembly and the clamping assembly; hydraulic oil is used for pushing the clamping piece to clamp the hammering head, then the hydraulic oil is cut off, the volume of the hydraulic oil is fixed, the hydraulic oil serves as a part of clamping and supporting the hammering head, and no gap is generated between the hammering head and the clamping piece after clamping; therefore, the risks that in the using process, the hammering head shakes relative to the clamping piece, the hammering head and the clamping piece move relative to each other, abrasion is caused, finally, the strength of components is reduced, and the components are directly cracked in the working process are avoided.

A water and soil loss protection net comprises a net body, the net body comprises a plurality of woven strips which are arranged in a criss-cross mode in a latticed mode, and fixing pieces are connected to the net body. The fixing pieces comprise connecting pieces movably connected with the weaving strips, and soil locking nails perpendicular to the plane where the net body is located are arranged on the connecting pieces; a plurality of barbs are arranged on the periphery of the soil locking nail in the length direction of the soil locking nail, and strip-shaped through holes which penetrate through the two sides of the soil locking nail and are formed in the length direction of the soil locking nail are formed in the soil locking nail. The net body is movably connected with the fixing part, the net body and the fixing part can be separately stored and transported, time and labor are saved, meanwhile, barbs are arranged on the peripheries of the soil locking nails, the soil locking nails are difficult to pull out after being inserted into the land, the overall tensile strength of the protective net is improved, through holes are further formed in the soil locking nails, plant roots can penetrate through the through holes to grow, and the soil locking nails are prevented from being damaged. The huge root system of the plant and the protective net are connected together to form an integral structure, so that the tensile strength and the shear strength of the protective net are improved, and the integral fixing effect is good.