Soil-absorbing full-casing hole-forming device and its application method
A hole-forming device and a full-casing technology, which are applied in drilling equipment and methods, earthwork drilling, drilling with mechanical conveying devices, etc., can solve the problems of high construction cost and long construction period, and reduce the hole-forming cost. , the effect of speeding up the sinking speed and improving the hole forming efficiency
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Embodiment 1
[0054] The soil-absorbing full casing pipe forming device provided in this embodiment, such as figure 1 and image 3 shown, which includes
[0055] The casing 1 vibrates and sinks toward the soil layer 2 under the drive of the pile driver to form the accommodation hole 3, and the vibration frequency of the casing 1 is 28 Hz;
[0056] The suction mechanism generates negative pressure in the inner cavity of the casing 1, and discharges the earth, rock, and sand in the casing 1 to reduce the frictional resistance of the earth, rock, and sand to the inner wall of the casing 1, and through the above suction The mechanism can effectively suck the soil, sand and gravel in the casing 1 out of the ground in time, so that the inner wall of the casing 1 has no or less soil, so that only the formation friction of the outer wall of the casing 1 exists during the sinking of the casing 1, through Reduce the friction resistance of the inner wall of the casing 1, reduce the total resistance...
Embodiment 2
[0067] The difference between this embodiment and embodiment 1 is that, as figure 2 and image 3 As shown, in the hole forming process, the depth position of the suction opening 5 on the suction pipe 4 is flush with the lower end surface of the casing 1, and the suction opening 5 is located at the lower end surface of the suction pipe 4 and On the side wall of the lower end of the suction pipe 4 . The above-mentioned suction pipe 4 sinks to the lower end surface of the casing 1, so that the suction pipe 4 can absorb the earth, rock and sand on the surface of the earth-rock layer 2 before the casing 1, thereby forming a pit in the earth-rock layer 2. During the descending process, the casing 1 vibrates near the above-mentioned pit to form a collapsed soil slope, so that the above-mentioned collapsed soil slope can be effectively attracted by the suction pipe 4 to be discharged, avoiding large pieces of soil during the casing 1 descending process. The problem that earth and s...
Embodiment 3
[0069] The difference between this embodiment and embodiment 1 is that, as Figure 4 As shown, the soil-absorbing full-casing drilling device is constructed in a water environment, and the method of using the soil-absorbing full-casing drilling device includes the following steps: S1, installing the casing 1 on the pile driver; S2, passing the high-pressure The water gun 7 sprays high-pressure water toward the earth-rock layer 2, and discharges the earth-rock sediment in the inner cavity of the casing 1 through the suction mechanism, and at the same time drives the casing 1 to sink into the earth-rock layer 2 to form a container. Place the hole 3; S3, remove the suction mechanism; S4, implant the prefabricated pile into the accommodating hole 3; S5, pull out the casing 1 and inject grout into the accommodating hole 3. The suction mechanism is a mud pump. The above-mentioned suction mechanism is a mud pump. In the water area construction environment, the mud pump can effectiv...
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